JP3568548B2 - Cable reel structure for airbag - Google Patents

Abstract

PURPOSE:To facilitate assembly work by devising the structure in a cable reel to absorb relative rotation by tightening or loosening the winding, of a tape electric wire after an electric wire is housed in a spiral spring shape in a housing having an inner cylinder and an outer cylinder. CONSTITUTION:Terminal gripping parts 6 and 7 of a tape electric wire are formed by fitting a molding part while sandwiching the tape electric wire from both surfaces by means of the molding part, and the terminal gripping parts are embedded in notch parts 3 and 4 arranged respectively in an inner cylinder 1 and an outer cylinder 2.

Description

[0001]
[Industrial applications]
The present invention relates to a cable reel suitable for signal transmission in a rotating member such as a steering wheel, and more particularly to a cable reel having a structure which is easy to assemble and can be automatically assembled.
[0002]
[Prior art]
For example, when signal transmission is performed between a steering wheel side and a vehicle body side of an automobile, an apparatus as shown in FIG. 2 is used. That is, the tape wire 5 is housed in a spiral manner in a housing having an inner tube and an outer tube, and the rotation of the handle is absorbed by the tight tightening and loosening of the tape wire. In assembling the cable reel, a tape wire is passed through holes 10 and 11 in the inner tube and the outer tube respectively, and terminal grip portions 8 and 9 provided in advance on the tape wire are fixed to the inner tube and the outer tube by a lock mechanism. There is a need.
[0003]
[Problems to be solved by the invention]
In assembling the cable reel, as described above, the operation of passing the tape electric wire through the holes of the inner tube and the outer tube is troublesome, and as long as this operation is necessary, the assembling cannot be automated.
[0004]
[Means for Solving the Problems]
The terminal grip part of the tape wire is formed by fitting the molded part with the tape wire sandwiched from both sides with a molded part, and fitting the terminal grip part into the notch provided in the inner cylinder and the outer cylinder, and fixing method. Has found that by adopting a structure that slides from the lateral direction, it is possible to assemble from one direction, improving the efficiency of assembling work and also enabling automation of assembling.
[0005]
【Example】
An embodiment will be described with reference to FIG. A notch 3 was provided in the inner cylinder 1, and a notch 4 was provided in the outer cylinder 2. The tape wire 5 is spun in a spiral shape, and the end portions 6 and 7 are molded components, respectively, and the tape wire is sandwiched from both sides to fit the molded components to form a terminal grip portion, and fitted into the terminals 3 and 4, respectively. Structured. Then, the holder 13 was fitted and fixed from below.
[0006]
【The invention's effect】
By adopting the structure shown in FIG. 1, the assembling from one direction can be performed, the efficiency of the assembling work is improved, and the reliability of the assembling is also improved.
[Brief description of the drawings]
FIG. 1 shows a state before assembling a cable reel of the present invention.
FIG. 2 shows an example of an exploded view of a conventional cable reel.
[Explanation of symbols]
1: Cable reel inner cylinder 2: Cable reel outer cylinder 3: Notch portion of inner cylinder 4: Notch portion of outer cylinder 5: Tape wire 6: Terminal gripper 7: Terminal gripper 8: Terminal gripper 9: Terminal Handle 10: Hole in cable reel inner cylinder 11: Hole in cable reel outer cylinder 12: Holder 13: Holder

Claims (1)

An inner cylinder provided with a cutout fixing portion on the outer side surface,
An outer cylinder provided with a cutout fixing portion on the outer side surface,
A mainspring-shaped tape wire accommodated in an annular internal space of a housing formed by combining the inner cylinder and the outer cylinder,
An airbag cable reel for absorbing relative rotation by tightening and loosening the winding of the tape wire, comprising:
An airbag cable reel in which both terminal portions of the tape wire are attached to the both cutout fixing portions so as to be fitted into the respective notch fixing portions from the outer surface direction.

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