JP2023074560A - Electric-wire protection cap - Google Patents

Abstract

To provide an electric-wire protection cap through which a fixed state of an electric-wire accommodated in a cap body can be more easily and surely confirmed from the outside of the cap body by visual observation.SOLUTION: An electric-wire protection cap 10 is provided with a cap body 11 formed into a bottomed cylindrical shape with one end 11a closed and the other end 11b opened as an electric-wire insertion port 13 to accommodate inside an end portion 20a of an electric-wire bundle 20 and an end portion 24 of a conductor exposed from the end portion 20a to protect them. The cap body 11 has a diameter-reduced inclined portion 14 that reduces the diameter and inclines from the electric-wire insertion port 13 of the other end 11b toward a proximal end 14a to guide the end portion 20a of the electric-wire bundle 20 inward, and an electric-wire receiving port portion 15 located at the proximal end 14a of the diameter-reduced inclined portion 14, and protrudes inward so as to have a diameter smaller than a diameter including a coating portion 22 of the electric-wire bundle 20. The electric-wire receiving port portion 15 is pushed inward together with the end portion 20a of the electric-wire bundle 20 to accommodate inside the end portion 20a of the electric-wire bundle 20 and the end portion 24 of the conductor while the electric-wire receiving port portion 15 is pushed to be expanded.SELECTED DRAWING: Figure 4

Description

The present invention relates to a wire protection cap.

Japanese Patent Laid-Open No. 2002-200001 discloses a cap that is put on a connecting portion branched from a main line to protect the electric wire. The insulating cap disclosed in Patent Document 1 has a cap body having a plurality of valves inside, and inserts a sleeve into which a plurality of wire ends are connected by compression of crimping pliers from an opening of the cap body to the valve. By inserting the cap body, the connecting portions of a plurality of electric wire ends are covered with the cap body.

JP-A-9-46876

In the conventional cap that protects the electric wire, the electric wire can be fixed inside the cap body by inserting a sleeve into which a plurality of electric wire ends are connected and inserted into the valve. It is not possible to visually confirm the fixed state of the electric wire.

The present invention has been made in view of the problems of the prior art. It is another object of the present invention to provide a wire protection cap that allows the fixed state of wires housed in the cap body to be easily and reliably confirmed visually from the outside of the cap body.

A wire protection cap according to an aspect of the present invention is formed in a bottomed cylindrical shape with one end closed and the other end opened as a wire insertion port, and includes an end of a wire bundle and a conductor end exposed from the end. a cap body for accommodating and protecting the wire bundle, wherein the cap body is tapered and inclined from the wire insertion port at the other end toward the base end, and has a diameter that guides the end portion of the wire bundle inside; and an electric wire receptacle located at the base end of the reduced-diameter inclined portion and protruding inward so as to be smaller than the diameter of the electric wire bundle including the covering portion, and the end portion of the electric wire bundle. from the reduced-diameter inclined portion to the peripheral portion of the wire receiving port and pushing the wire receiving port into the interior together with the end portion of the wire bundle while pushing the wire receiving port to expand the wire receiving port. It accommodates the end of the bundle and the end of the conductor.

ADVANTAGE OF THE INVENTION According to this invention, the wire protection cap which can confirm the fixed state of the wire accommodated in the cap main body easily and reliably visually from the outside of a cap main body can be provided.

1 is a perspective view showing an example of a wire protection cap according to an embodiment of the invention; FIG. It is a front view of the said electric wire protection cap. FIG. 4 is a cross-sectional view showing a state immediately before inserting an end portion of a bundle of electric wires into the electric wire protection cap. It is a sectional view showing a state in the middle of inserting the end of the wire bundle into the wire protection cap. It is sectional drawing which shows the state which inserted and fixed the edge part of the wire bundle to the said wire protection cap.

A wire protection cap according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1A is a perspective view showing an example of a wire protection cap according to an embodiment of the invention. FIG. 1B is a front view of the wire protection cap. FIG. 2 is a cross-sectional view showing a state immediately before inserting the end of the wire bundle into the wire protection cap. FIG. 3 is a cross-sectional view showing a state in the middle of inserting the end of the wire bundle into the wire protection cap. FIG. 4 is a cross-sectional view showing a state in which the ends of the wire bundle are inserted into and fixed to the wire protection cap.

As shown in FIGS. 1A to 4, a bonder cap 10 as a wire protection cap includes a bottomed cylindrical cap body 11 with one end 11a closed and the other end 11b open as a wire insertion port 13. there is More specifically, the cap body 11 is made of a transparent synthetic resin and has a disk-shaped bottom portion 12 at one end 11a and a circular bottomed wire insertion opening 13 at the other end 11b. 20 and the conductor end 24 exposed from the end 20a are accommodated and protected.

As shown in FIGS. 1A and 1B, the cap body 11 has an electric wire insertion opening 13, a reduced diameter inclined portion 14, an electric wire receiving opening portion 15, and an enlarged diameter inclined portion 16 in order from the other end 11b side to the one end 11a side. and have

As shown in FIG. 1A, the reduced-diameter inclined portion 14 is tapered from the wire insertion port 13 toward the proximal end 14a, and has a conical shape that guides the end portion 20a of the wire bundle 20 inside. there is The wire receptacle part 15 is located at the base end 14a of the diameter-reduced inclined part 14, and protrudes inward so as to have a circular opening smaller than the diameter of the wire bundle 20 including the insulating coating 22 as the covering part. . That is, as shown in FIG. 1B, R>L, where R is the diameter including the covering portion of the end portion 20a of the wire bundle 20, and L is the diameter of the opening of the wire receptacle portion 15. As shown in FIG. The enlarged-diameter inclined portion 16 has a conical surface shape that is enlarged and inclined from the wire receptacle portion 15 so as to have the same diameter as the diameter of the bottom portion 12 of the one end 11a.

As shown in FIGS. 2 to 4, the wire bundle 20 is branched from a wire harness main line routed to a vehicle (not shown), and is configured by bundling a plurality of wires 21 . Each electric wire 21 has an insulating coating 22 as a coating and a core wire (conductor) 23 covered with the insulating coating 22 . The conductor end portion 24 exposed from the end portion 20a of the wire bundle 20 is connected to the core wires 23 exposed from the ends of the insulating coatings 22 of the plurality of wires 21 constituting the wire bundle 20 by welding or the like. It is a bonder (heat welded part) that is electrically connected and integrated by heat welding. The bonder (conductor end) 24 is housed and protected within the cap body 11 so as not to accidentally contact the surrounding metal or the like.

According to the bonder cap 10 of the above-described embodiment, when the cap main body 11 is placed on the side of the end portion 20a of the wire bundle 20, the end portion 20a of the wire bundle 20 is inclined to reduce the diameter of the cap main body 11 as shown in FIG. The peripheral portion of the wire receptacle portion 15 is pressed from the portion 14 . Then, as shown in FIG. 3, while pressing with the end portion 20a of the wire bundle 20, the enlarged diameter inclined portion 16 is bent inward and folded back, and together with the end portion 20a of the wire bundle 20, the reduced diameter inclined portion 14 and the reduced diameter inclined portion 14 are formed. The wire receptacle part 15 is pushed inside. Since it can be easily confirmed from the outside that the wire receptacle part 15 is inserted into the inside of the cap body 11, it is possible to easily and reliably confirm the accommodation completion state of the wire bundle 20 visually.

Further, as shown in FIG. 4, when the end portion 20a of the wire bundle 20 expands the diameter of the wire receiving port portion 15 and accommodates the end portion 20a side of the wire bundle 20 in the cap main body 11, the wire receiving port portion 15 is opened. The electric wire bundle 20 is fixed by the expansion/contraction force and the frictional force. This fixation eliminates the need to fix the wire bundle 20 by tape winding as in the conventional art. In addition, since the end portion 20a of the wire bundle 20 housed in the cap body 11 and the wire receptacle portion 15 are sealed without a gap due to the expansion and contraction force of the wire receptacle portion 15, waterproof and insulating properties are ensured. can be improved.

As described above, by simply pushing the end portion 20a of the wire bundle 20 into the wire socket portion 15 of the cap body 11, the wire bundle 20 can be easily and reliably fixed by the expansion/contraction force and the frictional force of the wire socket portion 15. The fixed state can be easily and reliably confirmed by visual observation. As a result, the work of fixing the wire bundle 20 by tape winding becomes unnecessary, and the procedure and man-hours for attaching the cap main body 11 to the end portion 20a of the wire bundle 20 can be reduced, and the cost is accordingly reduced. can be improved.

Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications are possible within the scope of the gist of the present embodiment.

That is, according to the above-described embodiment, the cap main body is made of transparent synthetic resin in a bottomed cylindrical shape, but the cap main body may be made of opaque synthetic resin in a bottomed cylindrical shape.

Further, according to the above-described embodiment, the diameter-reducing inclined portion and the wire receiving opening are pushed inward by pressing the end portion of the wire bundle. You may make it push a part inside.

10 bonder cap (wire protection cap)
REFERENCE SIGNS LIST 11 cap body 11a one end 11b other end 12 bottom portion 13 wire insertion opening 14 reduced diameter inclined portion 14a base end 15 wire socket portion 16 expanded diameter inclined portion 20 wire bundle 20a end portion 21 wire 22 insulation coating (coating portion)
23 core wire (conductor)
24 bonder (conductor end)
R Diameter including the covering part of the wire bundle

Claims (3)

It is formed in a bottomed cylindrical shape with one end closed and the other end serving as a wire insertion port, and is equipped with a cap body inside which accommodates and protects the end of the wire bundle and the conductor end exposed from the end. ,
The cap main body has a diameter-reduced slanted portion that is slanted with a reduced diameter as it goes from the wire insertion port at the other end to a proximal end, and guides an end portion of the wire bundle inside; and a wire receptacle part that protrudes inward so as to be smaller than the diameter including the covering part of the bundle of wires,
The wire receiving port is pushed into the wire receiving port together with the end of the wire bundle while pressing the end of the wire bundle against the peripheral portion of the wire receiving port from the reduced-diameter inclined portion. A wire protection cap that accommodates the end of the wire bundle and the conductor end while expanding the wire protection cap. The cap main body further has an enlarged diameter slanted portion that is slanted from the wire socket portion so as to have the same diameter as the diameter of the bottom portion of the one end,
While pressing the end portion of the wire bundle from the reduced diameter inclined portion against the peripheral portion of the wire receptacle portion, the enlarged diameter inclined portion is bent inward and folded back, and together with the end portion of the wire bundle, the 2. The wire protection cap according to claim 1, wherein an end portion of said wire bundle and a conductor end portion are housed inside while expanding said wire receiving portion by pushing said diameter-reducing inclined portion and said wire receiving portion inside. The conductor end portion of the wire bundle is a bonder that electrically connects and integrates a plurality of core wires exposed from an end portion of an insulating coating as a coating portion of a plurality of wires by heat welding. 3. The wire protection cap according to 1 or 2.

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