JPH0662719U - Corrugated tube - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a corrugated tube with improved workability, improved flexibility, and prevention of abnormal noise. . [Structure] A corrugated tube body 1 made of a hard material, which has a half-split structure and is configured to be opened and closed by connecting side edges of adjacent half cylinders 12a with each other via a hinge 16.
A flexible sheet 14 is disposed inside the sheet 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a corrugated tube mounted on the outer periphery of a wire harness arranged in, for example, an automobile.

[0002]

[Prior art]

 As shown in FIGS. 4 and 5, the conventional corrugated tube 1 has a structure in which a slit 3 along the longitudinal direction is formed in an integrally molded tube body, and as shown in FIG. By pressing the slit 3 against the wire and expanding the slit 3, the wire harness W is attached to the outer circumference.

However, since the corrugated tube 1 has to be mounted on the wire harness W while expanding the slit 3, the mounting workability is poor and the side edge of the slit 3 may damage the wire harness W. was there.

To solve this problem, an openable corrugate tube adopting a hinge structure has been proposed. This corrugated tube has a half-split structure as shown, for example, in Japanese Utility Model Laid-Open No. 60-114521 and Japanese Utility Model Laid-Open No. 58-72924, and the side edges of adjacent semi-cylindrical bodies are hinged. It is configured so that it can be opened and closed by being connected.

According to this corrugated tube, the wire harness can be accommodated in the open state and mounted on the outer periphery of the wire harness by simply closing the wire harness in that state, so that there is no trouble such as pushing and expanding the slit. There is also no risk of damaging the wire harness at the side edges of the slit.

[0006]

[Problems to be solved by the device]

 However, even with this openable corrugated tube, the wire harness may get caught between the mating surfaces when it is attached to the bent part of the wire harness, and therefore the attachment work must be performed with caution. However, it has not been possible to obtain sufficiently good mounting workability.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a corrugated tube capable of improving mounting workability.

[0008]

[Means for Solving the Problems]

 The corrugated tube of the present invention has a half-split structure, and a flexible sheet is placed inside the corrugated tube body that is configured to be opened and closed by connecting the side edge members of adjacent half cylinders via a hinge. It is arranged.

[0009]

[Action]

 To attach the corrugated tube with the above configuration to the outer circumference of the wire harness, first open the corrugated tube and insert the wire harness between the inner two semi-cylindrical flexible sheets. In that state, the inner flexible sheet is closed first, and the wire harness is wrapped with the flexible sheet. Then close the mating surface of the outer corrugated tube body. Therefore, at the stage where the outer corrugated tube body is closed, the wire harness is already protected by the flexible sheet, and the wire harness is not caught between the mating surfaces of the corrugated tube body.

Further, in this mounted state, since the wire harness is wrapped in the inner flexible sheet, the wire harness does not directly contact the outer corrugated tube body, and vibration and abnormal noise are prevented. To be done.

Further, since the wire harness is wrapped with the flexible sheet, a space is secured between the outer corrugated tube body and the wire harness, so that the flexibility of the wire harness is improved.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a state before use of the corrugated tube of the embodiment, and FIG. 2 is a view seen from the direction A in FIG. This corrugated tube 10 has a corrugated tube main body 12 having the same or similar structure as a conventional corrugated tube, and two semi-cylindrical flexible sheets 14 and 14 for protecting a wire harness provided therein. Is.

The corrugated tube body 12 has a half-split structure, and the side edges of the adjacent semi-cylindrical bodies 12 a, 12 a are joined by a hinge 16 so that they can be opened and closed. The longitudinal edges of the flexible sheets 14 and 14 are adhered along the hinges 16 to the insides of the respective half cylinders 12a and 12a of the corrugated tube body 12. In this case, as shown in FIG. 3, the fitting dimensions of the flexible sheets 14 and 14 are such that the mating portions of the flexible sheets 14 and 14 wrap each other when closed. Set the joint dimensions of.

Further, when the flexible sheets 14 and 14 are closed, the space surrounded by the two flexible sheets 14 and 14 is set to be smaller than the sectional size of the wire harness W. As shown in FIG. 3, when closed, the wire harness W can be softly and lightly tightened, and the wire harness can be held with a weak force.

When the corrugated tube 10 is attached to the wire harness, the corrugated tube 10 is first opened as shown in FIG. Then, the wire harness is inserted between the inner two semi-cylindrical flexible sheets 14, 14. Next, the flexible sheets 14 and 14 are closed, the wire harness W is wrapped with the flexible sheets 14 and 14 as shown in FIG. 3, and the outer corrugated tube body 12 is closed in this state. Finally, the outer circumference of the corrugated tube is wound with a tape to complete the mounting. When the engaging means is provided at the mating portion of the corrugated tube body 12, the tape need not necessarily be wound by bringing the engaging means into the engaged state.

In the above work, when the mating surface of the outer corrugated tube body 12 is closed, the wire harness is already wrapped with the flexible sheets 14 and 14, so that the wire harness is provided between the mating surfaces of the corrugated tube body 12. There is nothing to chew.

Further, in the mounted state, as shown in FIG. 3, since the wire harness W is in a state of being wrapped in the flexible sheets 14 and 14, the wire harness W is directly outside the corrugated tube body 12. There is no hit. Therefore, generation of vibration and abnormal noise is prevented. Further, since the space 18 is secured between the outer corrugated tube body 12 and the wire harness W, the bendability of the wire harness W is not impeded and the bendability is improved.

The flexible sheets 14 and 14 and the corrugated tube body 12 may be integrally formed. In this case, the flexibility of the flexible sheets 14 and 14 can be ensured by forming the flexible sheets 14 and 14 on the inner side of the outer corrugated tube body 12 to be considerably thin, that is, to form a thin film. Good. Alternatively, the flexible sheets 14 and 14 may be formed of a highly flexible material such as vinyl chloride and attached to the corrugated tube body 12 formed of a hard material later to be integrated.

Further, the joining portions of the flexible sheets 14 and 14 may be wrapped as in the above-mentioned embodiment, but an adhesive portion may be provided as necessary to bond the joining surfaces. Alternatively, the flexible sheets 14 and 14 themselves may be formed in advance with a zipper tube or the like.

[0021]

As described above, according to the corrugated tube of the present invention, since it is an openable type, it can be attached to the wire harness without applying force. Also, since the outer corrugated tube body is closed while the wire harness is wrapped and protected by the soft sheet, the corrugated tube body made of a hard material does not bite the wire harness. Therefore, the mounting workability is improved.

Further, since the wire harness and the corrugated tube body do not come into direct contact with each other, generation of abnormal noise and vibration can be suppressed. Furthermore, since there is a space between the wire harness wrapped in the soft sheet and the corrugated tube body, the flexibility of the wire harness is improved and the handling of the wire harness is facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state before use of a corrugated tube according to an embodiment of the present invention.

2 is a view from the direction A of the corrugated tube in FIG.

FIG. 3 is a cross-sectional view showing a usage state of the corrugated tube in FIG.

FIG. 4 is a perspective view of a conventional corrugated tube.

FIG. 5 is a cross-sectional view showing a usage state of a conventional corrugated tube.

FIG. 6 is a perspective view showing a state in which a conventional corrugated tube is being attached to a wire harness during work.

[Explanation of symbols]

 10 Corrugated tube 12 Corrugated tube main body 12a Semi-cylindrical body 14 Flexible sheet 16 Hinge

Claims (1)

[Scope of utility model registration request] 1. A flexible sheet is arranged inside a corrugated tube main body which has a half-split structure and is configured to be openable and closable by connecting side edges of adjacent half cylinders via a hinge. A corrugated tube that is characterized.