JP6969741B2 - Wire insulation protection cap - Google Patents

Description

The present invention relates to an electric wire insulation protection cap that insulates and protects the tip of the electric wire.

In the electrical wiring work of a building, there is work to remove the coating (sheath) at the tip of the electric wire to expose the core wire. Then, in order to prevent electric shock or short circuit due to the exposed core wire, the exposed core wire is covered with vinyl insulating tape or a cap to insulate and protect the core wire.

When vinyl insulating tape is used, if the vinyl insulating tape is peeled off from the wire in order to wire the wire that protects the insulation, a part of the adhesive of the vinyl insulating tape may remain attached to the surface of the core wire. Since the adhesive of the vinyl insulating tape has electrical insulation, it is necessary to remove the adhesive adhering to the core wire from the core wire. Therefore, if a vinyl insulating tape is used, the work of removing the adhesive from the core wire may complicate the work. In addition, it is complicated to dispose of the vinyl insulating tape peeled off from the electric wire. On the other hand, unlike the vinyl insulating tape, the cap (for example, Patent Document 1) does not need to remove the adhesive when it is removed from the electric wire.

Jikkenhei 6-74035 Gazette

However, the cap of Patent Document 1 needs to be removed from the electric wire and the removed cap needs to be collected when connecting the attached electric wire, and a more convenient cap has been desired.

The present invention was devised in view of such a point, and the problem to be solved by the present invention is that it is not necessary to remove the electric wire from the electric wire and it is not necessary to collect the electric wire, which is more convenient. The purpose is to provide a wire insulation protection cap.

According to one feature of the present invention, the electric wire insulation protection cap is an electric wire insulation protection cap that insulates and protects the core wire portion at the tip where a part of the electric wire coating portion is peeled off, and the electric wire coating portion and the core wire portion. A tubular body portion through which the electric wire can enter and a fragile portion through which the electric wire can be penetrated by press-fitting the electric wire toward one end in the axial direction of the body portion are provided.

The electric wire insulation protection cap is provided with a cylindrical body portion, and the electric wire is accommodated in the internal space of the body portion and is insulated and protected by covering the tip of the electric wire. Here, at the tip of the electric wire, the covering portion is peeled off, and the core wire portion composed of the conductor is exposed. When connecting the tip of the electric wire to the terminal or the like, the core wire portion of the tip of the electric wire needs to be exposed. The conventional wire protection cap needs to be removed from the wire and collected in order to expose the core wire portion at the tip of the wire. On the other hand, the electric wire insulation protective cap having the above-mentioned characteristics of the present invention is provided with a fragile portion through which the electric wire can penetrate by press-fitting the electric wire toward one end in the axial direction of the body portion. Therefore, the electric wire insulation protective cap can penetrate the fragile portion with the electric wire by press-fitting the electric wire toward one end in the axial direction of the body portion. When the electric wire penetrates the fragile portion, the core wire portion is exposed from the fragile portion, and the exposed portion of the core wire portion can be connected to the terminal or the like. Therefore, the electric wire insulation protective cap is highly convenient because it does not need to be removed from the electric wire and does not need to be collected when connecting the attached electric wire.

Further, as described above, a part of the covering portion of the tip of the electric wire is peeled off, and the core wire portion having electrical conductivity is exposed. Therefore, it is desirable to improve the insulation and protect the area around the tip of the electric wire. Further, since the portion where the electric wire is bent and the portion where the electric wire is pressed from the side surface are relatively susceptible to damage, it is desirable to improve the insulating property to protect the insulation. Here, after the wiring is made, the electric wire insulation protective cap is in a state where the electric wire penetrates in the fragile portion, so that the electric wire can be easily moved on the electric wire. For this reason, the wire insulation protection cap is a part where it is desirable to improve the insulation and protect the wire by moving it on the wire so as to cover the part where it is desirable to improve the insulation and protect the wire. Can be protected by increasing the insulation. As described above, the electric wire insulation protective cap is more convenient because it does not need to be removed from the electric wire and does not need to be collected when connecting the attached electric wire. In addition, the wire insulation protection cap is moved on the wire so as to cover the part where it is desirable to improve the insulation and protect the wire after connecting the wire, thereby improving the insulation of the wire and protecting the insulation. The part that is desirable to be protected can be protected by increasing the insulating property.

Next, according to another feature, in the electric wire insulation protection cap, the fragile portion is configured as a bottom portion that closes one end of the body portion in the axial direction, and the thickness of the bottom portion is the thickness of the peripheral wall of the body portion. It is preferable to have a thinner relationship. Therefore, the fragile portion can be further penetrated by press-fitting the electric wire toward the bottom portion of the body portion. As a result, the electric wire insulation protective cap is more convenient because it does not need to be further removed from the electric wire and further need not be collected when connecting the attached electric wire.

Next, according to another feature, the electric wire insulation protective cap has a protruding portion that protrudes inward from the inner wall surface of the body portion and presses the covering portion in the radial direction of the body portion to hold the electric wire. Is preferable. Therefore, the wire tip to which the wire insulation protection cap is attached has the tip of the wire housed in the body of the wire insulation protection cap, and is pressed and held by the protrusion, so that the wire insulation protection cap falls off from the wire. Can be deterred.

Next, according to other features, in the electric wire insulation protective cap, it is preferable that a plurality of the protrusions are arranged at intervals on the inner wall surface of the body portion. Therefore, in the electric wire to which the electric wire insulation protection cap is attached, the electric wire tip is housed in the body portion of the electric wire insulation protection cap and is further held by the protruding portion, so that the electric wire insulation protection cap does not fall off from the electric wire. It can be further suppressed.

Next, according to other features, in the electric wire insulation protective cap, it is preferable that the protruding portion is arranged adjacent to the inner wall surface of the body portion in the circumferential direction. Therefore, in the electric wire to which the electric wire insulation protection cap is attached, the electric wire tip is housed in the body portion of the electric wire insulation protection cap and is further held by the protruding portion, so that the electric wire insulation protection cap does not fall off from the electric wire. It can be further suppressed.

Next, according to other features, in the electric wire insulation protective cap, it is preferable that the protruding portion is formed in an annular shape continuous in the circumferential direction on the inner wall surface of the body portion. Therefore, in the electric wire to which the electric wire insulation protection cap is attached, the electric wire tip is housed in the body portion of the electric wire insulation protection cap and is further held by the protruding portion, so that the electric wire insulation protection cap does not fall off from the electric wire. It can be further suppressed.

Next, according to other features, in the electric wire insulation protective cap, it is preferable that the tip of the body portion has an annular thick portion on the outer peripheral surface. As described above, when connecting an electric wire with an electric wire insulation protection cap to a terminal or the like, the electric wire is press-fitted toward one end in the axial direction of the body portion, and the fragile portion is penetrated by the core wire portion to protect the electric wire insulation. Expose the core wire from the cap. Here, the electric wire insulation protective cap has an annular thick portion on the outer peripheral surface at the tip of the body portion. The thick portion is arranged so as to surround the outer periphery of the bottom portion on the tip side, and since it is thick, it can be easily held. Therefore, by holding the thick portion, the fragile portion can be easily held through the thick portion. Therefore, if the thick portion is held and the electric wire is press-fitted toward one end in the axial direction of the body portion, the fragile portion can be easily penetrated by the core wire. Then, the core wire penetrating the fragile portion can be connected to a terminal or the like. As described above, since the tip of the body portion has an annular thick portion on the outer peripheral surface, it is possible to further facilitate the penetration of the fragile portion by the core wire.

Next, according to another feature, in the electric wire insulation protection cap, the protruding portion is the apex portion at the most radial inner position of the fuselage portion when viewed in the axial cross section of the body portion, and the said portion. A first inclined surface portion that gradually inclines outward in the radial direction of the body portion as it goes from the apex portion toward the axial direction of the body portion, and the fuselage portion that gradually inclines toward the axial other direction of the body portion from the apex portion. It is preferable that the portion includes a second inclined surface portion that gradually inclines outward in the radial direction, and the gradient of the first inclined surface portion is smaller than the gradient of the second inclined surface portion.

In order to hold the electric wire, it is the covering portion of the electric wire that the protrusion presses around the apex portion, not the core wire portion having a diameter smaller than that of the covering portion. If the axial length of the core wire exposed at the tip of the wire is shorter than the length from the bottom to the top of the protrusion in the axial direction of the body, the tip of the wire core If the wire is inserted into the wire insulation protection cap to the extent that it comes into contact with the bottom of the wire insulation protection cap, the protruding portion can press and hold the covering portion of the wire. On the other hand, if the axial length of the exposed core wire is longer than the length from the bottom to the top of the protrusion, the tip of the wire core is the bottom of the wire insulation protection cap. Even if it is inserted to the extent that it comes into contact with the wire, the protrusion cannot press the covering portion, so that the protrusion cannot hold the electric wire.

Therefore, in order for the protruding portion to hold the covering portion of the electric wire, the axial length of the core wire portion exposed at the tip of the electric wire extends from the bottom portion to the apex portion of the protruding portion in the axial direction of the body portion. Must be shorter than the length. Then, in the axial direction of the body portion, the longer the position of the apex portion of the protruding portion is on the opening side (other direction side) of the body portion, the longer the length from the bottom portion to the apex portion of the protruding portion, and the tip portion of the electric wire. The protruding portion can be held even for an electric wire having a longer axial length of the exposed core wire portion.

Here, the gradient of the first inclined surface portion from the apex to the bottom side (one side in the axial direction) is smaller than the gradient of the second inclined surface portion on the opening side (the other side in the axial direction). Therefore, in the axial direction of the body portion, the length of the first inclined surface portion on the bottom side (one side in the axial direction) is longer than the length of the second inclined surface portion on the opening side (the other side in the axial direction), and therefore the apex. The position of the portion can be located on the opening side (the other side in the axial direction) of the body portion. Therefore, a long length can be secured from the bottom to the apex of the protruding portion, and the protruding portion covers the electric wire having a relatively long axial length of the core wire portion exposed at the tip of the electric wire. Can be pressed and held. Therefore, the electric wire insulation protective cap can be attached to an electric wire having a relatively long axial length of the core wire portion exposed at the tip of the electric wire, and the convenience is further improved.

Further, the protruding portion holds the electric wire by pressing the covering portion of the electric wire housed in the electric wire insulation protective cap. Around the apex portion located at the innermost position in the radial direction of the protruding portion, the covering portion of the electric wire is pressed. Since the slope of the first inclined surface portion is smaller than the gradient of the second inclined surface portion, the area of the portion of the first inclined surface portion that contacts the covering portion comes into contact with the covering portion of the second inclined surface portion. Larger than the area of the part. In other words, by setting the slope of the first inclined surface portion to be small, the area of the portion of the first inclined surface portion that contacts the covering portion can be further increased, and as a result, the friction between the protruding portion and the covering portion can be increased. Can be made even larger. Therefore, it is possible to further prevent the electric wire insulation protective cap from falling off from the electric wire.

The electric wire insulation protection cap of the present invention has the above-mentioned configurations of each of the above inventions, so that it is not necessary to remove the attached electric wire from the electric wire and it is not necessary to collect the attached electric wire, which is more convenient for the electric wire insulation protection. Caps can be provided.

It is a perspective view of the electric wire insulation protection cap 10 of an embodiment. It is sectional drawing of the body part 11 of the electric wire insulation protection cap 10 of embodiment. It is a schematic diagram of the electric wire insulation protection cap 10 of an embodiment before use. It is a schematic diagram of the electric wire insulation protection cap 10 of the embodiment attached to the electric wire W. It is a schematic diagram of the electric wire insulation protection cap 10 of embodiment which exposed the electric wire W from the tip in order to connect the electric wire W. It is a schematic diagram of the electric wire insulation protection cap 10 of an embodiment attached to the connected electric wire W. It is sectional drawing of the body part 21 of the electric wire insulation protection cap 20 of the modification 1. FIG. It is sectional drawing of the body part 31 of the electric wire insulation protection cap 30 of the modification 2. FIG. It is sectional drawing of the body part 41 of the electric wire insulation protection cap 40 of the modification 3. FIG. It is sectional drawing of the body part 51 of the electric wire insulation protection cap 50 of the modification 4. FIG. It is sectional drawing of the body part 61 of the electric wire insulation protection cap 60 of the modification 5. FIG. It is a partial cross-sectional view in the axial direction of the body portion 61 of the electric wire insulation protection cap 60 of the modification 5. It is a perspective view of the electric wire insulation protection cap 70 of the modification 6. It is a perspective view of the electric wire insulation protection cap 80 of the modification 7. It is a perspective view of the electric wire insulation protection cap 90 of the modification 8. It is sectional drawing in the axial direction of the electric wire insulation protection cap 100 of the modification 9. FIG. It is a perspective view of the electric wire insulation protection cap 110 of the modification 10. It is a perspective view of the electric wire insulation protection cap 120 of the modification 11. It is a perspective view of the electric wire insulation protection cap 130 of the modification 12. It is sectional drawing of the body part 131 of the electric wire insulation protection cap 130 of the modification 12. It is sectional drawing of the body part 141 of the electric wire insulation protection cap 140 of the modification 13. It is a side view of the tip of the body part 151 of the electric wire insulation protection cap 150 of the modification 14. It is a perspective view of the electric wire insulation protection cap 160 of the modification 15. It is sectional drawing of the body part 161 of the electric wire insulation protection cap 160 of the modification 15. FIG. FIG. 15 is a schematic cross-sectional view in the axial direction of the body portion 161 in which the periphery of the protruding portion 162 pressing the covering portion W1 of the electric wire W in the modified example 15 is enlarged.

[Embodiment]
Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 6. The electric wire insulation protection cap 10 of the present embodiment is an electric wire insulation protection cap attached to the tip of the electric wire W in order to insulate and protect the tip of the electric wire W. Further, soft vinyl chloride was selected as the material constituting the electric wire insulation protective cap 10 of the present embodiment. The material constituting the electric wire insulation protective cap 10 is not limited to this, and may be any material having excellent insulation and elasticity. Any resin, rubber, elastomer or the like having excellent insulation and elasticity may be used.

<Structure of wire insulation protection cap 10>
FIG. 1 shows a perspective view of the electric wire insulation protective cap 10 of the present embodiment. As shown in FIG. 1, the electric wire insulation protective cap 10 has a cylindrical body portion 11 and a bottom portion 14 at the tip end (one end in the axial direction) of the body portion 11, and these are integrally formed. There is. Further, the end portion (the other end in the axial direction) opposite to the bottom portion 14 in the axial direction is open in the axial direction. Further, as shown in FIG. 1, the body portion 11 has four projecting portions 12 protruding inward (in the inner diameter direction) from the inner wall surface of the body portion 11. Then, as shown in FIG. 1, the protruding portions 12 are provided at intervals on the circumference 11r on the inner wall surface of the body portion 11. Further, FIG. 2 shows a cross-sectional view of the body portion 11 including the circumference 11r. As shown in FIG. 2, the projecting portions 12 are provided at intervals on the circumference 11r on the inner wall surface of the body portion 11. Further, as shown in FIG. 1, the body portion 11 has an annular thick portion 13 at the tip end surrounding the outer peripheral surface. The thick portion 13 is thicker than the thickness of the body portion 11. Further, the bottom portion 14 at the tip of the body portion 11 closes the end on the tip end side of the body portion 11. The thickness of the bottom portion 14 is thinner than the thickness of the wall surface of the body portion 11, and the bottom portion 14 is configured as a fragile portion through which the electric wire W can penetrate by press-fitting the electric wire W toward the tip end.

<About the use of the wire insulation protection cap 10>
Hereinafter, FIGS. 3 to 6 schematically show how to use the electric wire insulation protective cap 10 of the present embodiment. FIG. 3 shows the electric wire insulation protective cap 10 before use. As shown in FIG. 3, the wire insulation protective cap 10 has an opening at the other end (that is, the rear end) in the axial direction of the body portion 11 (see FIG. 1). The electric wire W is inserted into this opening of the electric wire insulation protection cap 10, and the electric wire insulation protection cap 10 is attached to the electric wire W. Further, as shown in FIG. 3, for the tip portion of the electric wire W, the covering portion W1 is removed in advance before the electric wire insulation protective cap 10 is attached, and the core wire portion W2 is exposed. The reason why the core wire portion W2 is exposed in this way is that the core wire portion W2 is quickly connected to the terminal or the like. Then, the electric wire insulation protection cap 10 is attached to the electric wire W in this state.

FIG. 4 schematically shows the electric wire insulation protective cap 10 attached to the electric wire W. As shown in FIG. 4, the tip portion of the electric wire W is housed in the internal space of the body portion 11 of the wire insulation protection cap 10, and the wire insulation protection cap 10 insulates the tip portion of the housed wire W. I'm protecting. Further, as shown in FIG. 4, the body portion 11 of the electric wire insulation protective cap 10 has a plurality of projecting portions 12 projecting inward from the inner wall surface of the body portion 11, and the projecting portions 12 have the electric wire W as the body portion. The electric wire W is held by pressing in the radial direction of 11. Further, as described above with reference to FIGS. 1 and 2, four projecting portions 12 are provided in the body portion 11. These four protrusions 12 are provided at intervals on the circumference 11r on the inner wall surface so as to surround the electric wire W. In this way, since the protruding portion 12 presses the electric wire W in the radial direction, the friction between the electric wire W and the pressing protruding portion 12 is large. Therefore, the electric wire insulation protective cap 10 is hard to come off from the electric wire W. That is, the protruding portion 12 prevents the electric wire insulating protective cap 10 from falling off from the electric wire W.

Further, when connecting the electric wire W in the state shown in FIG. 4 to the terminal or the like, the electric wire W is press-fitted in the tip direction (direction toward the bottom portion 14) so that the core wire portion W2 penetrates the bottom portion 14 to protect the electric wire insulation. The electric wire W is exposed from the bottom 14 of the cap 10 (see FIG. 5). Then, the exposed core wire portion W2 is connected. Here, since the thickness of the bottom portion 14 of the electric wire insulating protective cap 10 of the present embodiment is thinner than the thickness of the body portion 11, the bottom portion 14 can be penetrated by the electric wire W. As will be described below, the electric wire insulation protective cap 10 of the present embodiment has the thick portion 13 to make it easier to penetrate the bottom portion 14.

The electric wire insulation protective cap 10 has an annular thick portion 13 on the outer peripheral surface at the tip of the body portion 11 (see FIGS. 1 and 4). Since the electric wire insulation protective cap 10 has the thick portion 13, it is made easier to penetrate the above-mentioned bottom portion 14 with the electric wire W. That is, the thick portion 13 is arranged so as to surround the outer periphery of the bottom portion 14, and since it is thicker, it can be easily held. Further, since the thick portion 13 is arranged so as to surround the outer periphery of the bottom portion 14, if the thick portion 13 is held, the bottom portion 14 can be held via the thick portion 13. Therefore, if the thick portion 13 that is easy to hold is held, the bottom portion 14 can be held via the thick portion 13. In other words, the bottom portion 14 can be easily held by holding the thick portion 13.

Therefore, if the bottom portion 14 is held through the thick wall portion 13 by holding the thick portion 13 and the bottom portion 14 is press-fitted by the core wire portion W2, it is easy to penetrate the bottom portion 14 with the electric wire W. For example, it is easy to pinch the thick portion 13 with one hand, further pinch a part of the electric wire W extending from the rear end of the electric wire insulation protective cap 10 with the other hand, and press-fit the electric wire W toward the tip end. The bottom 14 can be penetrated by the electric wire W. Here, the thick portion 13 and the electric wire W are pinched by hand, but the method can be appropriately changed, such as pinching with pliers instead of pinching by hand. As described above, the electric wire insulation protection cap 10 has an annular thick portion 13 on the outer peripheral surface at the tip of the body portion 11, so that it is easier to penetrate the bottom portion 14 of the electric wire insulation protection cap 10 with the electric wire W. I have to. Further, as described above, when the bottom portion 14 is penetrated by the electric wire W, the tip of the core wire portion W2 is exposed from the bottom portion 14, and the exposed portion of the core wire portion W2 can be connected to the terminal or the like.

FIG. 5 schematically shows a state in which the electric wire W penetrates the bottom portion 14 of the electric wire insulation protective cap 10. In this state, the core wire portion W2 is exposed from the electric wire insulation protective cap 10, and the exposed portion of the core wire portion W2 can be easily connected to a connector, a terminal, or the like. As an example of the state in which the electric wire W is connected, FIG. 6 shows the electric wire W connected to the connector A. A part of the covering portion W1 (see FIG. 3) is peeled off from the tip of the electric wire W, and the core wire portion W2 having electrical conductivity is exposed. Therefore, it is desirable to improve the insulating property and protect the area around the tip of the electric wire W. Further, since the portion where the electric wire W is bent and the portion where the electric wire W is pressed from the side surface are relatively susceptible to damage, it is desirable to improve the insulating property to protect the insulation. Here, after the wires are connected, the wire insulation protective cap 10 is in a state where the wire W penetrates at the bottom 14 (fragile portion) (see FIG. 5), so that the wire insulation protection cap 10 can be easily moved on the wire W. Therefore, the electric wire insulation protection cap 10 is moved on the electric wire W so as to cover a portion of the electric wire W where it is desirable to enhance the insulation and protect the insulation, thereby enhancing the insulation of the electric wire W and protecting the insulation. It is possible to insulate and protect the desirable part by increasing the insulation.

As described above, the electric wire insulation protective cap 10 of the present embodiment has the following functions and effects. The electric wire insulation protection cap 10 of the present embodiment is an electric wire insulation protection cap 10 that insulates and protects the core wire portion W2 at the tip from which a part of the covering portion W1 of the electric wire W is peeled off, and is the covering portion W1 of the electric wire W and the core wire. A tubular body portion 11 into which the portion W2 can enter and a bottom portion 14 (fragile portion) through which the electric wire W can be penetrated by press-fitting the electric wire W toward one end in the axial direction of the body portion 11 are It is provided.

The electric wire insulation protection cap 10 is provided with a cylindrical body portion 11, and accommodates the electric wire W in the internal space of the body portion 11 and covers the tip of the electric wire W to insulate and protect the electric wire W. Here, at the tip of the electric wire W, the covering portion W1 is peeled off, and the core wire portion W2 composed of the conductor is exposed. When connecting the tip of the electric wire W to the terminal or the like, the core wire portion W2 at the tip of the electric wire W needs to be exposed. The conventional cap needs to be removed from the electric wire W and collected in order to expose the core wire portion W2 at the tip of the electric wire W. On the other hand, the electric wire insulation protective cap 10 is provided with a bottom portion 14 (fragile portion) through which the electric wire W can penetrate by press-fitting the electric wire W toward one end in the axial direction of the body portion 11. Therefore, the electric wire insulation protective cap 10 can penetrate the bottom portion 14 (fragile portion) by the electric wire W by press-fitting the electric wire W toward one end in the axial direction of the body portion 11. When the electric wire W penetrates the bottom portion 14, the core wire portion W2 is exposed from the bottom portion 14, and the exposed portion of the core wire portion W2 can be connected to a terminal or the like. Therefore, the electric wire insulation protective cap 10 is highly convenient because it does not need to be removed from the electric wire W and does not need to be collected when connecting the attached electric wire W.

Further, as described above, a part of the covering portion W1 is peeled off from the tip of the electric wire W, and the core wire portion W2 having electrical conductivity is exposed. Therefore, it is desirable to improve the insulating property and protect the area around the tip of the electric wire W. Further, since the portion where the electric wire W is bent and the portion where the electric wire W is pressed from the side surface are relatively susceptible to damage, it is desirable to improve the insulating property to protect the insulation. Here, after the wiring is made, the electric wire insulation protective cap 10 is in a state where the electric wire W penetrates at the bottom portion 14 (fragile portion), so that the electric wire insulation protection cap 10 can be easily moved on the electric wire W. Therefore, the electric wire insulation protection cap 10 is moved on the electric wire W so as to cover a portion of the electric wire W where it is desirable to enhance the insulation and protect the insulation, thereby enhancing the insulation of the electric wire W and protecting the insulation. It is possible to insulate and protect the desirable part by increasing the insulation. As described above, the electric wire insulation protective cap 10 is more convenient because it does not need to be removed from the electric wire W and does not need to be collected when connecting the attached electric wire W. Further, after the electric wire W is connected, the electric wire insulation protection cap 10 is moved on the electric wire W so as to cover a portion of the electric wire W where it is desirable to improve the insulation and protect the insulation, thereby insulating the electric wire W. It is possible to increase the insulation and protect the part where it is desirable to increase the insulation and protect it.

Further, the bottom portion 14 (fragile portion) of the electric wire insulation protective cap 10 is configured as a bottom portion 14 that closes one end in the axial direction of the body portion 11, and the thickness of the bottom portion 14 is thinner than the thickness of the peripheral wall of the body portion 11. .. Therefore, the bottom portion 14 (fragile portion) can be further penetrated by press-fitting the electric wire W toward the bottom portion 14 of the body portion 11. As a result, the electric wire insulation protective cap 10 is more convenient because it does not need to be further removed from the electric wire W and further need not be collected when connecting the attached electric wire W.

Further, the electric wire insulation protective cap 10 has a protruding portion 12 that projects inward from the inner wall surface of the body portion 11 and presses the covering portion W1 in the radial direction of the body portion 11 to hold the electric wire W. Therefore, the electric wire W to which the electric wire insulation protection cap 10 is attached has the tip of the electric wire W housed in the body portion 11 of the electric wire insulation protection cap 10, and is pressed and held by the protrusion 12, so that the electric wire insulation protection cap 10 is held. It is possible to prevent 10 from falling off from the electric wire W.

Further, a plurality of protruding portions 12 are arranged on the inner wall surface of the body portion 11 at intervals. Therefore, the electric wire W to which the electric wire insulation protection cap 10 is attached has the tip of the electric wire W housed in the body portion 11 of the electric wire insulation protection cap 10, and is further held by the protrusion 12, so that the electric wire insulation protection cap 10 is further held. Can be further prevented from falling off from the electric wire W.

Further, the tip of the body portion 11 has an annular thick portion 13 on the outer peripheral surface. As described above, when connecting the electric wire W to which the electric wire insulation protective cap 10 is attached to the terminal or the like, the electric wire W is press-fitted toward one end in the axial direction of the body portion 11, and the bottom portion 14 (fragile portion) is connected to the core wire portion W2. The core wire portion W2 is exposed from the wire insulation protective cap 10 by penetrating it with. Here, the electric wire insulation protective cap 10 has an annular thick portion 13 on the outer peripheral surface at the tip of the body portion 11. The thick portion 13 is arranged so as to surround the outer periphery of the bottom portion 14 on the tip side, and since it is thick, it can be easily held. Therefore, by holding the thick portion 13, the bottom portion 14 can be easily held via the thick portion 13. Therefore, if the thick portion 13 is held and the electric wire W is press-fitted toward one end in the axial direction of the body portion 11, the bottom portion 14 can be easily penetrated by the core wire portion W2. Then, the core wire portion W2 of the portion penetrating the bottom portion 14 can be connected to a terminal or the like. As described above, since the tip of the body portion 11 has the annular thick portion 13 on the outer peripheral surface, it is possible to further facilitate the penetration of the bottom portion 14 by the core wire portion W2.

[Modification 1: FIG. 7]
In the following modification examples including this modification example, detailed description of the same configuration as that of the above-described embodiment will be omitted. In the electric wire insulation protective cap 10 of the above-described embodiment, as shown in the perspective view of FIG. 1 and the cross-sectional view of FIG. 2, four projecting portions are spaced apart on the circumference 11r on the inner wall surface of the body portion 11. Is provided. However, the position, shape, and number of the protrusions are not limited to this, and can be changed as appropriate.

FIG. 7 is a cross-sectional view similar to that of FIG. 2, and is a cross-sectional view of the body portion 21 of the present modification including the circumference 21r on the inner wall surface of the body portion 21. In this modification, a plurality of protruding portions 22 are arranged adjacent to each other in the circumferential direction on the peripheral surface 21r on the inner wall surface of the body portion 21.

Further, the protruding portion 22 is arranged adjacent to the inner wall surface of the body portion 21 in the circumferential direction. Therefore, in the electric wire W to which the electric wire insulation protection cap 20 is attached, the electric wire tip is housed in the body portion 21 of the electric wire insulation protection cap 20, and the electric wire insulation protection cap 20 is further held by the protrusion 22. It is possible to further prevent the wire from falling off from the wire W.

[Modification 2: FIG. 8]
FIG. 8 is a cross-sectional view similar to that of FIG. The electric wire insulation protective cap 30 of this modification includes the circumference 31r on the inner wall surface of the body portion 31 in the body portion 31. In the first modification, the protrusions 22 are arranged adjacent to each other in the circumferential direction, but in the present modification, the protrusions 32 have the protrusions 22 of the first modification as shown in FIG. , It is a shape extended in the circumferential direction on the circumference 31r.

[Modification 3: Fig. 9]
The shape of the protruding portion 42 of the electric wire insulating protective cap 40 may be a shape that extends further in the circumferential direction than the protruding portion 32 of the above-mentioned modification 2 using FIG. FIG. 9 is a cross-sectional view similar to that of FIG. 8, and is a cross-sectional view of the body portion 41 of the present modification including the circumference 41r on the inner wall surface of the body portion 41.

[Modification 4: FIG. 10]
The protruding portion may have a shape extending in the circumferential direction more than the protruding portion 42 of the modified example 3. FIG. 10 is a cross-sectional view similar to that of FIG. 9, and is a cross-sectional view of the body portion 51 of the present modification including the circumference 51r on the inner wall surface of the body portion 51. As shown in FIG. 10, the protruding portion 52 of this modified example has a shape that extends further in the circumferential direction than the protruding portion 42 of the modified example 3. As shown in the cross-sectional view in FIG. 10, in this modification, the protruding portion 52 is formed in an annular shape continuous in the circumferential direction.

Further, as shown in FIG. 10, the protruding portion 52 is formed in an annular shape continuous in the circumferential direction. Therefore, due to these configurations, the electric wire W whose tip is housed in the body portion 51 of the electric wire insulation protection cap 50 is further held by the protrusion 52, so that the electric wire insulation protection cap 50 falls off from the electric wire W. Can be further suppressed.

[Modification 5: FIGS. 11 and 12]
Next, the electric wire insulation protection cap 60 will be described. FIG. 11 is a cross-sectional view similar to that of FIG. 10, and is a cross-sectional view of the body portion 61 of the present modification including the circumference 61r on the inner wall surface of the body portion 61. As shown in FIG. 11, the protruding portion 62 of this modified example has a shape that extends in the circumferential direction further than the protruding portion 52 of the modified example 4 and goes around in the circumferential direction. Further, FIG. 12 is a partial cross-sectional view, which is a cross-sectional view in the axial direction of the portion of the body portion 61 provided with the protruding portion 62. As shown in FIG. 12, the protruding portion 62 of this modified example also has a shape tapered toward the center of the body portion, as in the above-described embodiments and modified examples 1 to 4. Further, when the projecting portion has a configuration in which the projecting portion goes around in the circumferential direction as in the projecting portion 62 of the present modification, the projecting portion may be configured as a separate body from the body portion.

[Modification 6: FIG. 13]
In the above-described embodiments and modifications 1 to 5, as shown in FIG. 12, the protruding portion has a shape that tapers toward the center of the body portion. The cross-sectional shape of the protruding portion does not have to be a shape that tapers toward the center of the body portion. FIG. 13 shows a perspective view of the electric wire insulation protective cap 70 of the modification 6. As shown in FIG. 13, in this modification, the protruding portion 72 is arranged in a band shape on the inner wall surface of the body portion 71. Further, as described above in the modified example 5, the protruding portion 72 that goes around in the circumferential direction may also be configured as a separate body from the body portion 71.

[Modification 7: FIG. 14]
In the above-described embodiments and modifications, a plurality of protruding portions are arranged side by side in the circumferential direction of the body portion (embodiments, modifications 1 to 3), and examples of a shape extending in the circumferential direction of the body portion. (Modifications 2 to 6) are mentioned, and these are examples in which the arrangement of the protruding portion in the circumferential direction is different. However, the direction in which the protrusions are lined up or the direction in which the protrusions extend may not be limited to the circumferential direction. Further, a plurality of protrusions having different sizes may be provided on the body portion.

FIG. 14 shows a perspective view of the electric wire insulation protective cap 80 of the modification 7. As shown in FIG. 14, in this modification, a plurality of projecting portions 82 are provided on the peripheral 81r1 and the peripheral 81r2 having different axial positions on the inner wall surface of the body portion 81. Further, in this modification, the protruding portion 82 on the peripheral 81r1 on the distal end side is configured to be smaller than the protruding portion 82 on the peripheral 81r2, and the protruding portions 82 are those on the peripheral 81r1 and those on the peripheral 81r2. The size is different between. As described above, the protrusions do not have to be the same size, and protrusions of different sizes may be provided.

[Modification 8: FIG. 15]
FIG. 15 shows a perspective view of the electric wire insulation protective cap 90 of the modified example 8. As shown in FIG. 15, the projecting portion 92 is arranged on the inner wall surface of the body portion 91 on a spiral 91s extending in the axial direction. Here, three protrusions 92 are provided, but the present invention is not limited to this, and may be three or less or three or more. Further, the electric wire insulation protective cap 90 of this modification is not provided with a thick portion. In the above-described embodiments and modifications 1 to 7, the outer peripheral surface of the tip of the body portion has an annular thick-walled portion, but as in the present modification, the electric wire insulation protective cap has a thick-walled portion. It doesn't have to be.

[Modification 9: FIG. 16]
In the above-described embodiments and modifications 1 to 8, the shape of the body portion is columnar. However, the shape of the body portion may be tubular and may not be limited to a cylindrical shape. FIG. 16 shows a cross-sectional view of the electric wire insulation protective cap 100 of the modified example 9 in the axial direction. As shown in FIG. 16, in the electric wire insulation protective cap 100 of this modification, the body portion 101 has a tapered shape. Further, as for the electric wire insulation protective cap 100 of this modification, soft vinyl chloride having excellent insulation and elasticity was selected as the material, as in the above-described embodiments and modifications 1 to 8. Therefore, the body portion 101 of this modification is also excellent in elasticity. Therefore, the electric wire W having a diameter smaller than the diameter of the opening on the rear end side of the body portion 101 of the electric wire insulation protective cap 100 of this modification, and the diameter of the electric wire W should be larger than the diameter of the bottom portion of the tip of the body portion. For example, when the electric wire W is brought into the body portion 101, the electric wire W can be held by bringing the electric wire W into close contact with the inner wall surface of the body portion 101. Since the shape of the body portion need only be cylindrical, the body portion may have a shape in which a part thereof bulges in the axial direction.

[Modification 10: FIG. 17]
In the above-described embodiment and modification, the body portion of the electric wire insulation protective cap has a circular cross section, a columnar shape, or a tapered shape. The body portion may be an elliptical columnar having an elliptical cross section or an elliptical cross section having a tapered shape. The shape of the body portion of the electric wire insulation protective cap may be tubular, and the cross section may be a polygonal polygonal column such as a triangular column, a square column, a pentagonal column, or a hexagonal column.

FIG. 17 shows a perspective view of the electric wire insulation protective cap 110 of the modified example 10. As shown in FIG. 17, in the electric wire insulation protective cap 110 of this modification, the shape of the body portion 111 is a square columnar shape. In this way, the body portion can be a quadrangular columnar cross section having a quadrangular cross section, for example, the cross section can be a quadrangular columnar shape such as a parallelogram, a rhombus, a rectangle, or a square.

[Modification 11: FIG. 18]
FIG. 18 shows a perspective view of the electric wire insulation protective cap 120 of the modification 11. As shown in FIG. 18, in the electric wire insulation protective cap 120 of this modification, the shape of the body portion 121 is a square columnar having a rectangular cross section. The electric wire insulation protective cap 120 of this modification can be more easily attached to the flat electric wire W by forming the body portion 121 into a rectangular columnar shape having a rectangular cross section in this way.

[Modification 12: FIGS. 19 and 20]
In the above-mentioned modified examples 10 and 11, the shape of the body portion was a square columnar shape. FIG. 19 shows a perspective view of the electric wire insulation protective cap 130 of the modification 12. As shown in FIG. 19, in the electric wire insulation protective cap 130 of this modification, the shape of the body portion 131 is a triangular columnar shape. Further, on the inner wall surface of the body portion 131, a protruding portion 132 that protrudes inward in the radial direction is provided on the circumference 131r. FIG. 20 illustrates a state in which the electric wire W is housed in the internal space of the body portion 131 of the electric wire insulation protective cap 130 of this modification. As shown in FIG. 20, the diameter of the electric wire W (that is, the electric wire W to which the electric wire insulation protective cap 130 is attached) accommodated in the internal space of the body portion 131 is the diameter of the inscribed circle in the triangle of the cross section of the body portion 131. If it is larger than the diameter, the electric wire W can be pressed in the radial direction of the electric wire W by the inner wall surface of the body portion 131. Therefore, as in the present modification, especially when the body portion has a polygonal shape, the wall surface of the body portion can press and hold the electric wire W in the same manner as the protrusion portion, so that the protrusion portion does not need to be provided. That is, in this modification, the body portion 131 has a triangular cross section, and the plane surface of the inner wall surface comes into contact with the electric wire. Therefore, the inner wall surface of the body portion 131 presses the electric wire without providing the protruding portion 132. obtain. If the body portion has a polygonal cross section, the inner wall surface may press the electric wire W in the same manner. Therefore, if the body portion is a polygonal columnar wire insulation protection cap, including the wire insulation protection caps 110 to 130 of the above-mentioned modifications 10 to 12, it is not necessary to provide the protrusion. In this case, the body portion of the electric wire insulating protective cap may have the same function and effect as the protruding portion, and the electric wire insulating protective cap may be prevented from falling off from the electric wire W (see FIG. 3). In the above, when the shape of the body portion is polygonal columnar, it is not necessary to provide the protrusion, but it goes without saying that the present invention is not limited to this, and even if the shape of the body portion is not polygonal columnar, the protrusion is not necessarily provided. good.

[Modification 13: FIG. 21]
In the electric wire insulation protective cap 130 of the above-mentioned modification 12, the body portion has a triangular columnar cross section (see FIGS. 19 and 20). However, the shape of the body portion may be tubular, and the shape of the body portion is not limited to a shape having a circular or polygonal cross section. In the electric wire insulation protective cap 140 of the modification 13, the cross-sectional shape of the body portion 141 is shown in FIG. 21 (a). As shown in FIG. 21 (a), in this modified example, the cross section of the body portion 141 is formed into a substantially triangular shape in which each side is recessed inward. Further, in this modification, the protruding portion is not provided, but the protruding portion may be provided.

The electric wire insulation protection cap 140 of this modification has such a cross-sectional shape of the body portion 141, so that the electric wire insulation protection cap 140 of this modification can be used for electric wires W having various diameters. Can be done. That is, in the cross section of the body portion 141 shown in FIG. 21A, the electric wire insulation protective cap 140 of this modification can be easily attached to the electric wire W having a diameter larger than the circle 141r inscribed on three sides. can. 21 (b) to 21 (d) illustrate cross-sectional views of the body portion of the electric wire insulation protective cap 140 of this modification attached to the electric wires W having different diameters. Here, in this modification, the cross section of the body portion 141 is formed into a substantially triangular shape in which each side is recessed inward. The diameter of the circle inscribed on the three sides is smaller for a substantially triangle with each side recessed inward than for a triangle. As a result, the inner wall surface of the body portion 141 of this modification can be pressed in close contact with the electric wire W having a smaller diameter. That is, the electric wire insulation protection cap 140 of this modification has a substantially triangular shape in which each side is recessed inward, so that the cross section of the body portion 141 is larger than that of the electric wire insulation protection cap having a body portion having a triangular cross section. Even for a wire W having a smaller diameter, it is possible to prevent the wire insulation protection cap 140 from falling off from the wire W (see FIG. 3).

Further, as shown in FIG. 21A, the body portion 141 of this modification has a substantially triangular cross section in which each side is recessed inward. It can be applied to the shape of the body part of the electric wire insulation protection cap of the modified examples 10 to 11 in which the body part is configured in a polygonal shape, and the cross section of the body part is not only a substantially triangular shape but also an abbreviation in which each side is recessed inward. It may be a polygonal shape.

[Modification 14: FIG. 22]
In the modified example 14, the shape of the body portion 151 of the electric wire insulation protective cap 150 is different from that of the body portion 141 of the modified example 13, but the other shapes are the same as those of the modified example 13. FIG. 22 shows a side view of the tip of the body portion 151 of the modified example 14. In the present modification 14, the inner wall surface is adhered around the apex of the substantially triangular shape at the tip of the body portion 151, and the tip of the body portion 151 is designated as the bottom portion 154. Further, in this modification, the thick portion is not provided. Here, it goes without saying that the adhesion of the bottom portion 154 is such that the core wire portion W2 can penetrate the bottom portion 154 by press-fitting the electric wire W. In this case, since the bottom portion 154 can be easily held by holding the portion that becomes the apex of the substantially triangular shape, the core wire portion W2 can easily penetrate the bottom portion 154 without providing the thick portion. In the above, it is assumed that the inner wall surface is adhered around the apex of the substantially triangular shape at the tip of the body portion 151, but other than the adhesion, it may be just crimped or brought into close contact.

[Modification 15: FIGS. 23 to 25]
The electric wire insulation protective cap 160 of the modified example 15 has a feature in the shape of the protrusion 162, and the shape of the protrusion 162 is different from that of the above-described embodiment, but the other parts have the same configuration. FIG. 23 shows a side view of the electric wire insulation protective cap 160 of this modification. As shown in FIG. 23, as in the above-described embodiment, the four projecting portions 162 are provided at intervals on the circumference 161r on the inner wall surface of the body portion 161. Further, FIG. 24 shows an axial sectional view of the body portion 161 of the electric wire insulation protective cap 160 of this modification.

As shown in FIG. 24, the projecting portion 162 has an apex portion 162a located at the innermost position in the radial direction of the fuselage portion 161 and the apex portion 162a to the fuselage portion 161 when viewed in the axial cross section of the fuselage portion 161. The first inclined surface portion 162b that gradually inclines outward in the radial direction of the body portion 161 toward the tip direction (one in the axial direction), and the body portion 161 toward the opening (the other in the axial direction) of the body portion 161 from the apex portion 162a. It is provided with a second inclined surface portion 162c, which is gradually inclined outward in the radial direction of the above. As shown in FIG. 24, the protrusion 162 of the present modification has a relationship in which the gradient of the first inclined surface portion 162b is smaller than the gradient of the second inclined surface portion 162c.

As shown in FIG. 24, in order to hold the electric wire W, it is the covering portion W1 of the electric wire W that the protruding portion 162 presses around the apex portion 162a, and the diameter is smaller than that of the covering portion W1. It is not the core wire portion W2. When the axial length W2L of the core wire portion W2 exposed at the tip of the electric wire W is shorter than the length 162aL from the bottom portion 164 to the apex portion 162a of the protruding portion 162 in the axial direction of the body portion 161. If the electric wire W is inserted into the electric wire insulation protection cap 160 so that the tip of the core wire portion W2 of the electric wire W comes into contact with the bottom portion 164 of the electric wire insulation protection cap 160, the protruding portion 162 presses the covering portion W1 of the electric wire W. Can be held. On the other hand, when the axial length W2L of the exposed core wire portion W2 is longer than the length 162aL from the bottom portion 164 to the apex portion 162a of the protrusion 162, the core wire portion W2 of the electric wire W The protruding portion 162 cannot hold the electric wire W because the protruding portion 162 cannot press the covering portion W1 even if the tip of the wire is inserted so as to come into contact with the bottom portion 164 of the electric wire insulating protective cap 160.

Therefore, as shown in FIG. 24, in order for the protruding portion 162 to hold the covering portion W1 of the electric wire W, the length W2L of the core wire portion W2 exposed at the tip of the electric wire W is the body portion 161. In the axial direction of, it is necessary to be shorter than the length 162aL from the bottom portion 164 to the apex portion 162a of the protrusion 162. Then, in the axial direction of the body portion 161, the longer the position of the apex portion 162a of the projecting portion 162 is on the opening side (other direction side) of the body portion 161 is, the longer the length 162aL from the bottom portion 164 to the apex portion 162a of the projecting portion 162. Can be held by the protruding portion 162 even for an electric wire W having a longer axial length W2L of the core wire portion W2 exposed at the tip end portion of the electric wire W.

Here, as shown in FIG. 24, the gradient of the first inclined surface portion 162b from the apex portion 162a to the bottom portion 164 side (one side in the axial direction) is the second inclination on the opening side (the other side in the axial direction). It is smaller than the slope of the surface portion 162c. Therefore, in the axial direction of the body portion 161, the length of the first inclined surface portion 162b on the bottom portion 164 side (one side in the axial direction) is larger than the length of the second inclined surface portion 162c on the opening side (the other side in the axial direction). Since it is long, the position of the apex portion 162a can be located on the opening side (the other side in the axial direction) of the body portion 161. Therefore, a long length 162aL from the bottom portion 164 to the apex portion 162a of the protruding portion 162 can be secured, and the axial length W2L of the core wire portion W2 exposed at the tip of the electric wire W becomes a relatively long electric wire W. On the other hand, the protruding portion 162 may press and hold the covering portion W1. Therefore, the electric wire insulation protective cap can be attached to the electric wire W having a relatively long axial length W2L of the core wire portion W2 exposed at the tip of the electric wire W, and the convenience is further improved.

Further, the protruding portion 162 holds the electric wire W by pressing the covering portion W1 of the electric wire W housed in the electric wire insulation protective cap. FIG. 25 shows an axial sectional view of the body portion 161 in which the periphery of the protruding portion 162 pressing the covering portion W1 of the electric wire W is enlarged. As shown in FIG. 25, the covering portion W1 of the electric wire W is pressed around the apex portion 162a located at the innermost position in the radial direction of the protruding portion 162. Since the gradient of the first inclined surface portion 162b is smaller than the gradient of the second inclined surface portion 162c, the area of the portion 162bc of the first inclined surface portion 162b in contact with the covering portion W1 is the area of the second inclined surface portion 162c. It is larger than the area of the portion 162cc in contact with the covering portion W1. In other words, by setting the slope of the first inclined surface portion 162b to be small, the area of the portion 162bc in contact with the covering portion W1 in the first inclined surface portion 162b can be further increased, and as a result, the protrusion portion 162 and the protrusion portion 162 can be increased. The friction with the covering portion W1 can be further increased. Therefore, it is possible to further prevent the electric wire insulation protective cap from falling off from the electric wire W. Note that FIG. 25 shows, as an example, a mode in which the periphery of the apex portion 162a of the protrusion 162 is recessed to hold the electric wire W, but the present invention is not limited to this, in which the covering portion W1 is recessed to hold the electric wire W. It may be present, or the periphery of the apex portion 162a of the protrusion 162 and the covering portion W1 may both be recessed to hold the electric wire W.

Although the embodiment of the present invention has been described above, the electric wire insulation protective cap of the present invention is not limited to the above-described embodiment and modifications, and can be implemented in various other forms. For example, the electric wire insulation protection cap is intended to insulate and protect the core wire portion at the tip where a part of the electric wire coating portion is peeled off. Not limited to this, the electric wire insulation protection cap of the present invention may be an electric wire insulation protection cap that insulates and protects an electric wire whose covering portion is not peeled off at the tip portion of the electric wire. In this case, as in the above-described embodiment, the electric wire insulation protective cap is attached to the electric wire whose covering portion is not peeled off at the tip portion. Further, the cross-sectional shape of the body portion can be appropriately changed, and may be changed between the front end side and the rear end side, for example. Further, the material of the body portion and the bottom portion may be different. In that case, the thickness of the bottom portion does not have to be thinner than the thickness of the wall surface of the body portion. Further, in the above-described embodiment and modification, the portion having a corner may be formed into a shape with rounded corners.

10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160 Wire insulation protection caps 11, 21, 31, 41, 51, 61, 71, 81 , 91, 101, 111, 121, 131, 141, 151, 161 Body parts 12, 22, 32, 42, 52, 62, 72, 82, 92, 102, 112, 122, 132, 162 Protruding parts 13, 23 , 33, 43, 53, 63, 73, 83, 93, 103, 113, 123, 133, 143, 163 Thick part 14, 24, 34, 44, 54, 64, 74, 84, 94, 104, 114 , 124, 134, 144, 154, 164 Bottom part 162a Top part 162b First inclined surface part 162c Second inclined surface part W Wire W1 Coating part W2 Core wire part A connector

Claims (8)

It is an electric wire insulation protection cap that insulates and protects the core wire part at the tip where a part of the electric wire coating is peeled off.
And insertable tubular body portion within the core portion from an opening formed in the other axial end,
It has a bottom portion that closes one end of the fuselage portion in the axial direction on a continuous inner surface without a notch.
The bottom, wire insulation protective cap is a thin fragile portion in thickness than the peripheral wall of the body portion capable of penetrating the press-fitting of the axially inserted the core wire portion to the body portion. The electric wire insulation protective cap according to claim 1.
Further, a wire insulation protective cap having a protruding portion that protrudes inward in the radial direction from the inner wall surface of the body portion and presses the covering portion inward in the radial direction of the body portion to hold the electric wire. The electric wire insulation protective cap according to claim 2.
The protruding portion includes an apex portion that most protrudes inward in the radial direction at a position closer to the opening than the axial center of the body portion.
A first inclined surface portion that gradually inclines outward in the radial direction of the body portion as it goes from the apex portion to the bottom portion.
And a second inclined surface portion gradually inclined outward in the radial direction of the body portion toward the opening from the top portion,
An electric wire insulation protective cap having a relationship in which the slope of the first inclined surface portion is smaller than the gradient of the second inclined surface portion. The electric wire insulation protective cap according to claim 2 or 3.
The protruding portion is an electric wire insulating protective cap that is disposed on the inner wall surface of the body portion at intervals in the axial direction. The electric wire insulation protective cap according to any one of claims 2 to 4.
The protruding portion is an electric wire insulating protective cap that is disposed on the inner wall surface of the body portion at intervals in the circumferential direction. The electric wire insulation protective cap according to any one of claims 2 to 4.
The protruding portion is an electric wire insulating protective cap disposed adjacently in the circumferential direction on the inner wall surface of the body portion. The electric wire insulation protective cap according to any one of claims 2 to 4.
The protruding portion is an electric wire insulation protective cap formed in an annular shape continuous in the circumferential direction. The electric wire insulation protective cap according to any one of claims 1 to 7.
The body portion is an electric wire insulating protective cap having a thick portion that swells in an annular shape along the outer peripheral surface of the bottom portion.

Images