阅读说明：本技术 屏蔽电线的箔剥离工具 (Foil stripping tool for shielded wire ) 是由 间渊实良 于 2019-05-28 设计创作，主要内容包括：一种用于屏蔽电线的箔剥离工具(100),通过整体地组装圆柱形插入部(10)和圆柱形剥离部(20)而形成。在插入部(10)中,形成内径朝向剥离部(20)减小的锥形插入孔(11)。在剥离部(20)中,形成与插入孔(11)连通的剥离孔(21)、与剥离孔(21)平行的供气孔(22)、分别连通供气孔(22)和剥离孔(21)的分支供气孔(23)、以及设置在面对分支供气孔(23)的位置处的排气孔(24)。从供气孔开口端部(22b)侧供给的空气经由供气孔(22)从分支供气孔(23)吹入剥离孔(21)。缠绕的箔(2)通过空气从芯线(1)松开,并且通过剥离孔端部(21a)弯曲或切入来切断。(A foil peeling tool (100) for a shielded electric wire is formed by integrally assembling a cylindrical insertion portion (10) and a cylindrical peeling portion (20). In the insertion portion (10), a tapered insertion hole (11) is formed, the inner diameter of which decreases toward the peeling portion (20). In the peeling section (20), a peeling hole (21) communicating with the insertion hole (11), an air supply hole (22) parallel to the peeling hole (21), branch air supply holes (23) communicating with the air supply hole (22) and the peeling hole (21), respectively, and an air discharge hole (24) provided at a position facing the branch air supply holes (23) are formed. Air supplied from the side of the opening end (22b) of the air supply hole is blown into the peeling hole (21) from the branched air supply hole (23) through the air supply hole (22). The wound foil (2) is released from the core wire (1) by air, and cut by bending or cutting the peel hole end portion (21 a).)

1. A foil peeling tool for a shielded electric wire which peels a foil from a core wire within a range of removing a sheath, the electric wire having a core wire, the foil being wound around the core wire and the sheath covering the foil, the foil peeling tool for the shielded electric wire comprising:

An insertion portion having an insertion hole into which the shield electric wire is inserted; and

A peeling part communicating with the insertion part and having a peeling hole into which a range of the sheath of the shielded electric wire is removed is inserted,

Wherein the peeling section is provided with an air supply hole for blowing air into the peeling hole, and an air discharge hole for discharging the air blown from the air supply hole from the peeling hole, and

Wherein a portion of the foil loosened by the blown air is in contact with an end of the insertion hole on a peeling hole side or an end of the peeling hole on an insertion hole side.

2. a foil peeling tool for a shielded electric wire which peels a foil from a core wire within a range of removing a sheath, the electric wire having a core wire, the foil being wound around the core wire and the sheath covering the foil, the foil peeling tool for the shielded electric wire comprising:

An insertion portion having an insertion hole into which the shield electric wire is inserted; and

A peeling part communicating with the insertion part and having a peeling hole into which a range of the sheath of the shielded electric wire is removed is inserted,

Wherein the peeling part is provided with an air discharge hole for discharging air supplied from one end of the peeling hole, an

Wherein a portion of the foil loosened by the blown air is in contact with an end of the insertion hole on a peeling hole side or an end of the peeling hole on an insertion hole side.

3. The foil peeling tool for shielded electric wire according to claim 1 or 2,

wherein a cutting portion having a cutting blade is provided between the insertion portion and the peeling portion, and

Wherein a part of the foil is in contact with the cutting blade instead of or together with the end of the insertion hole on the peeling hole side or the end of the peeling hole on the insertion hole side.

Technical Field

The present invention relates to a foil peeling tool for a shielded electric wire, and particularly to a tool for peeling a foil wound around a core wire constituting a shielded electric wire.

Background

In the related art, the shielded electric wire is formed by winding a metal foil around the outer periphery of a core wire and then covering the outer periphery of the metal foil with an insulating sheath. When connecting the shielded electric wire to another shielded electric wire, the sheath and the metal foil of each shielded electric wire are removed within a predetermined range of the end portion thereof to expose the core wire.

Therefore, a cutting blade unit according to the present invention is disclosed, which cuts and removes a metal foil by cutting into the metal foil after removing a sheath within a predetermined range of an end thereof (for example, see patent document 1).

Disclosure of Invention

In the invention disclosed in patent document 1, the end face of the shielded electric wire from which the sheath is removed, that is, the end face of the core wire wound with the metal foil, is pressed against the tapered face, and the outer surface of the sheath is held by the chuck member, and after the tapered surface and the chuck member approach each other, the core wire wound with the metal foil is sandwiched by the cutting blade. That is, the core wire wound around the metal foil slightly expands with the approach, so that the metal foil is not easily bent and deformed, and the cutting blade cuts only into the metal foil in such a stable state.

However, since the expanded shape may not be stabilized in a certain shape, there is a possibility that the metal foil of the portion cannot be peeled off due to insufficient cutting, or the core wire is damaged due to excessive cutting. Further, since the distance between the tapered surface and the chuck member (or the cutting blade) is limited, the peeling range of the metal foil is limited. Further, since a mechanism for allowing the tapered surface and the chuck member to approach each other is required, or a mechanism for moving the cutting blade is required, the structure becomes complicated, the operation becomes complicated, and the apparatus cost increases.

In order to solve the above problems, the present invention provides a foil peeling tool for a shielded electric wire. A foil peeling tool for a shielded electric wire can easily peel a foil without damaging a core wire, is not limited by the range of peeling the foil, and has a simple structure.

a foil peeling tool for a shielded electric wire according to the present invention peels a foil from a core wire within a range of removing a sheath, the core wire being included in a shielded electric wire, the foil being wound around the core wire, and the sheath covering the foil and including an insertion portion having an insertion hole into which a shielded electric wire is inserted, and a peeling portion communicating with the insertion portion and having a peeling hole into which a range of removing the sheath of the shielded electric wire is inserted, wherein the peeling portion is provided with an air supply hole for blowing air into the peeling hole and an air discharge hole for discharging the air blown from the air supply hole from the peeling hole, and a part of the foil loosened by the blown air is in contact with an end of the insertion hole on the peeling hole side or an end of the peeling hole on the insertion hole side.

Alternatively, a foil peeling tool for a shielded electric wire peels a foil from a core wire within a range of removing a sheath, the core wire being included in an electric wire, the foil being wound around the core wire, and the sheath covering the foil and including an insertion portion having an insertion hole into which a shielded electric wire is inserted, and a peeling portion communicating with the insertion portion and having a peeling hole within a range of inserting the shielded electric wire to remove the sheath, wherein the peeling portion is provided with an air vent for exhausting air supplied from one end portion of the peeling hole, and a portion of the foil loosened by the supplied air is in contact with an end portion of the insertion hole on the side of the peeling hole or an end portion of the peeling hole on the side of the insertion hole.

Further, a cutting portion having a cutting blade is provided between the insertion portion and the peeling portion, and a part of the foil is in contact with the cutting blade instead of or together with an end of the insertion hole on the peeling hole side or an end of the peeling hole on the insertion hole side.

ADVANTAGEOUS EFFECTS OF INVENTION

With the foil peeling tool for a shielded electric wire according to the present invention, the foil wound around the core wire is loosened by air, and a part of the foil is brought into contact with the end of the insertion hole or the peeling hole, so that only the foil can be easily peeled without damaging the core wire.

Drawings

Fig. 1 is a longitudinal sectional view schematically showing a foil peeling tool for a shielded electric wire at the start of operation according to embodiment 1 of the present invention.

Fig. 2 is a longitudinal sectional view schematically showing a part of a foil peeling tool for a shielded electric wire during operation according to embodiment 1 of the present invention.

Fig. 3 is a longitudinal sectional view schematically showing a foil peeling tool for a shielded electric wire at the start of operation according to embodiment 2 of the present invention.

Fig. 4 is a longitudinal sectional view schematically showing a part of a foil peeling tool for a shielded electric wire during operation according to embodiment 2 of the present invention.

Fig. 5A and 5B schematically show a foil peeling tool for shielding an electric wire according to embodiment 2 of the present invention, fig. 5A is a side view showing a part of the electric wire (an example of how a foil is wound), and fig. 5B is a front view showing a part of the electric wire (an example of how a foil is wound).

Detailed Description

< example >

Hereinafter, a foil peeling tool for a shielded electric wire according to embodiments 1 and 2 of the present invention will be described with reference to the drawings. Since the drawings are for illustrative purposes, the shape and size of each member, or the positional relationship between the members, is not limited to the illustrated embodiment.

[ example 1]

(foil peeling tool for shielded wire)

Fig. 1 and 2 schematically show a foil peeling tool for a shielded electric wire according to embodiment 1 of the present invention, in which fig. 1 is a longitudinal sectional view showing the foil peeling tool for a shielded electric wire at the start of operation, and fig. 2 is a longitudinal sectional view showing a part of the foil peeling tool for a shielded electric wire during operation.

In fig. 1, a foil peeling tool 100 for a shielded electric wire (hereinafter simply referred to as "foil peeling tool") is formed by integrally assembling a cylindrical insertion portion 10 and a cylindrical peeling portion 20.

In the insertion portion 10, a conical (tapered) insertion hole 11 is formed, the inner diameter of which decreases toward the peeling portion 20.

Further, a peeling hole 21 having a central axis 29 coinciding with the central axis 19 of the insertion hole 11 is formed in the peeling portion 20. Forming an air supply hole 22 parallel to the peeling hole 21; a plurality of branched air supply holes 23 communicating with the air supply hole 22 and the peeling hole 21, respectively; and a plurality of exhaust holes 24 provided at positions facing the branched feeding holes 23.

One end surface (hereinafter, referred to as "air supply hole blocking end portion") 22a of the air supply hole 22 is blocked by the insertion portion 10, and the other end surface (hereinafter, referred to as "air supply hole opening end portion") 22b is opened.

Therefore, the air supplied from the side of the air supply hole opening end portion 22b is blown from the branch air supply hole 23 into the peeling hole 21 via the air supply hole 22, and is discharged from the air discharge hole 24 (more precisely, discharged from the other surface (hereinafter, referred to as "peeling hole opening end portion") 21b opened in the peeling hole 21).

The inner diameter of an end portion 11b of the insertion hole 11 on the side of the peeling hole 21 (hereinafter referred to as "insertion hole end portion") (hereinafter referred to as "insertion hole inner diameter") is smaller than the inner diameter of an end portion 21a of the peeling hole 21 on the side of the insertion hole 11 (hereinafter referred to as "peeling hole end portion") (hereinafter referred to as "peeling hole inner diameter"). Therefore, a range where the sheath 3 of the shielded electric wire 4 is removed (the same range as that where the foil 2 of the core wire 1 is exposed) is smoothly inserted into the peeling hole 21.

(foil peeled state)

Next, the foil peeling state of the foil peeling tool 100 will be schematically described.

In fig. 1, a shielded electric wire 4 includes a core wire 1 at the center, a foil 2 wound around the core wire 1, and a sheath 3 covering the foil 2. The shield electric wire 4 is inserted into the insertion hole 11 in a state in which the sheath 3 is removed within a predetermined range from the end of the shield electric wire 4 and the foil 2 is peeled, and the range where the foil 2 is peeled enters the peeling hole 21. An insulating coating may be applied to the outer circumference of the core wire 1 (the same as the inner circumference of the foil 2).

In fig. 2, since the air supplied to the air supply hole 22 is blown from the branch air supply hole 23, the wound foil 2 is unwound from the core wire 1, and the unwound foil 2 is pressed against the inner surface of the peeling hole 21 or pulled toward the air discharge hole 24 by the wind pressure (it should be noted that the illustrated shape is only an image and is not necessarily accurate due to the change in the shape of the unwound foil 2).

At this time, the inner diameter of the insertion hole 11 is smaller than the inner diameter of the peeling hole 21, and the insertion hole end 11b protrudes toward the central axis 19 to generate a difference in section between the insertion hole end 11b and the peeling hole end 21a, so that a part of the foil 2 is pressed against the insertion hole end 11 b. In this case, the loosened foil 2 may be cut by bending or cutting the insertion hole end portion 11 b.

Further, when the shielded electric wire 4 and the foil peeling tool 100 are relatively rotated about the central axis 19 (the same as the central axis 29), since a part of the foil 2 slides to the insertion hole end portion 11b in a state of being pressed on the insertion hole end portion 11b, the foil 2 is easily and reliably cut and separated from the core wire 1.

The cut foil 2 is reliably blown out of the peeling holes 21 by blowing air into the peeling holes 21 in the direction of the peeling hole ends 21a or by sucking air from the peeling hole ends 21 a.

in the above description, the inner diameter of the insertion hole is smaller than that of the peeling hole, and the present invention is not limited thereto. Even when the inner diameter of the insertion hole is larger than that of the peeling hole, the loose foil 2 can be pressed against the inner surface of the peeling hole 21 by wind pressure and can be cut by bending or cutting the peeling hole end portion 21 a. Since a part of the foil 2 slides to the peeling hole end portion 21a by the relative rotation, the foil 2 is easily and reliably cut.

Further, in the above description, the shielded electric wire 4 is held with one hand while the foil peeling tool 100 is held with the other hand during operation, whereas only one hand can be used during operation by fixing the foil peeling tool 100.

Further, a cutting portion having a cutting blade formed on the inner periphery of the center hole may be provided between the insertion portion 10 and the peeling portion 20, and the foil 2 may be cut by the cutting blade (see embodiment 2).

(operational Effect)

The foil peeling tool 100 has the configuration as described above. Since the foil 2 wound around the core wire 1 is loosened by the blown air and pressed against the inner surface of the peeling hole 21 and a part of the foil 2 is in contact with the insertion hole end portion 11b or the peeling hole end portion 21a, only the foil 2 can be peeled easily and reliably without damaging the core wire 1.

Further, since the length of the peeling hole 21 is not limited, the range of the peeling foil 2 is not limited. Further, the foil peeling tool 100 is easy to operate and low in manufacturing cost due to its simple structure and light weight.

[ example 2]

(foil peeling tool for shielded wire)

Fig. 3 to 5B schematically show a foil peeling tool for a shielded electric wire according to embodiment 2 of the present invention, in which fig. 5A and 5B are longitudinal sectional views showing the tool at the start of operation, fig. 4 is a longitudinal sectional view showing a part of the tool during operation, and fig. 5A is a side view showing a part of the electric wire (an example of how a foil is wound). Fig. 5B is a front view showing a part of the electric wire (an example of how the foil is wound). The same or corresponding components as in embodiment 1 are given the same names and the same reference numerals, and a partial description thereof will be omitted.

In fig. 3, a foil peeling tool (hereinafter, simply referred to as "foil peeling tool") 200 for shielding an electric wire is obtained by removing the air supply hole 22 and the branch air supply hole 23 in the foil peeling tool 100 described in embodiment 1 and providing a perforated disk-shaped cutting portion 30 between the insertion portion 10 and the peeling portion 20.

at this time, the cutting blade 31 is disposed on the inner periphery of the central hole of the cutting portion 30, and the inner diameter of the cutting blade 31 (hereinafter referred to as "cutting blade inner diameter") is substantially equal to or slightly smaller than the inner diameter of the insertion hole.

(foil peeled state)

In fig. 4, air is supplied from the peeling hole opening end 21b to the peeling hole 21, and the supplied air is discharged from the air discharge hole 24. Accordingly, since the wound foil 2 is unwound from the core wire 1 by the momentum of the supplied air, and the unwound foil 2 is unwound by the wind pressure and pressed against the cutting blade 31 (it should be noted that the illustrated shape is only an image and is not necessarily accurate due to the change in the shape of the unwound foil 2. in addition, the unwound foil 2 may be pressed not only against the cutting blade 31 but also against the insertion hole end 11b or the peeling hole end 21 a).

At this time, a portion of the foil 2 is cut by bending or cutting with the cutting blade 31. Further, when the shielded electric wire 4 and the foil peeling tool 200 are relatively rotated 2 around the center shaft 19, the foil 2 is easily and reliably cut and separated from the core wire 1 since a part of the foil 2 slides while being pressed against the cutting blade 31.

The cut foil 2 can be reliably blown out of the peeling holes 21 by blowing air into the peeling holes 21 in the direction of the peeling hole ends 21a or by sucking air from the peeling hole ends 21 a.

In the above description, the cutting part 30 is provided, and the present invention is not limited thereto. Alternatively, the cutting part 30 may be removed as in embodiment 1. At this time, when the loosened foil 2 is pressed against the insertion hole end portion 11b or the peeling hole end portion 21a by the wind pressure, the shield electric wire 4 and the foil peeling tool 200 are relatively rotated about the central shaft 19, the foil 2 is cut more easily and reliably, and is separated from the core wire 1.

In fig. 3, "spiral type" wound in a spiral shape is started as "foil 2 wound around core wire 1", and the arrangement form of foil 2 in the present invention is not limited thereto. For example, it is possible to arrange a "longitudinal type" in which a predetermined range near the side edges 2a and 2B overlaps in parallel with the central axis 19 (see fig. 5A and 5B, the same as in embodiment 1). In fig. 5A and 5B, the predetermined ranges are shown separately, but the predetermined ranges are actually in close contact with each other.

(operational Effect)

Since the foil peeling tool 200 has the configuration as described above, the same operational effects as the foil peeling tool 100 described in embodiment 1 can be obtained. In particular, since the foil 2 is cut by the cutting blade 31, the cut surface is uniformly formed in the circumferential direction and has an excellent aesthetic appearance. Further, since reliable cutting can be continued only by replacing the cutting blade 31, the cutting blade 31 can be used for a long time regardless of the wear of the insertion hole end portion 11b and the peeling hole end portion 21 a.

The present invention was described above based on examples 1 and 2. It will be understood by those skilled in the art that embodiments 1 and 2 are merely examples, and various modifications may be made to each component and combinations thereof, and these modifications are also within the scope of the present invention.

Industrial applicability

As described above, the present invention can be widely used as a foil peeling tool for a shielded electric wire, peeling a foil wound around a core wire of various types of shielded electric wires.