JPH0638051Y2 - Cable reel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used for a steering device of an automobile or the like, and uses a flexible cable such as a flat cable for electrical connection between a fixed body and a movable body. The present invention relates to a cable reel to be used.

[Prior Art] A cable reel has one end of a flexible cable such as a flat cable fixed to a fixed body and the other end fixed to a movable body.
When the movable body is rotated, the flat cable is wound on the movable body side or unwound from the movable body side so that the movable body can be rotated by a predetermined amount. For example, a steering wheel of an automobile. It is used in devices and the like.

4 and 5 show a cable reel for an automobile according to the prior art. Thus, FIG. 4 is an exploded perspective view of the cable reel, and FIG. 5 is an exploded perspective view of the cable lead-out portion.

First, in FIG. 4, reference numeral 1 denotes a movable body, which is a movable body 1.
A rotary cylinder 3 having a shaft introduction hole 2 is vertically provided at the center of the, and a cylindrical holder 4 is arranged outside the rotary cylinder 3. The holder 4 has a slit 4a extending in the vertical direction, a recess 4b on the inner surface, and is fixed to the top plate portion of the movable body 1 with a predetermined distance from the outer peripheral surface of the rotary cylinder 3. There is.

Reference numeral 5 is a flat cable in which a plurality of conductors made of copper foil or the like are laminated with two flexible base films such as polyethylene terephthalate (PET). One end of the flat cable 5 is a slit 4a of the holder 4. Through the recess
After reaching the portion 4b, it is folded back at a right angle in the concave portion 4b through a bend line of 45 ° and led out to the outside through the cable lead-out portion 6.

On the other hand, 7 indicates a fixed body, and a central hole into which the rotary cylinder 3 of the movable body 1 is rotatably snap-in in the center of the fixed body 7.
7a is formed, and an outer ring wall 7b for accommodating the flat cable 5 is erected on the outer periphery thereof. This outer ring wall 7b
A guide portion 8 extends obliquely downward in a part of the flat cable 5, and the other end of the flat cable 5 is folded back at a right angle inside the outer ring wall 7b and then fixed along the guide portion 8. 7 is extended to the outside.

Here, the cable lead-out portion 6 for leading out one end of the flat cable 5 to the outside is a fixed guide fixed to a position adjacent to the cable lead-out port 1a formed in the movable body 1, as shown in FIG. 10 and a holder 11 snap-fitted to the fixed guide 10. Further, the fixed guide 10 has a guide surface having an inclined portion with a curved tip.
It is configured by connecting side walls 10b, 10b to the left and right of 10a, and the holder 11 has a regulation wall 11a provided so as to face the guide surface 10a. The flat cable 5 is led out to the outside along with the restriction wall 11a.

On both right and left sides of the restriction wall 11a, snap connecting pieces 11b, 11b extend in a direction substantially orthogonal to the pulling direction of the flat cable 5, and the fixed guide 10 side guides the snap connecting piece 11b. The guide groove 12 is formed on the side wall 10b in the same direction as the extending direction of the snap connection piece 11b.
Is formed so as to penetrate through. Further, a locking projection 13 is provided on the groove bottom of the guide groove 12, while an engagement groove 14 that engages with the locking projection 13 is formed on the snap coupling piece 11b. Further, an insertion portion 11c is connected to the regulation wall 11a so that the insertion portion 11c can be inserted into the cable outlet 1a provided in the movable body 1.

With this configuration, the flat cable 5 is led out to the outside along the guide surface 10a in the state where the holder 11 is separated from the fixed guide 10, and the insertion portion 11c of the holder 11 is inserted.
Is inserted into the cable pull-out opening 1a, the snap connecting piece 11b is inserted into the guide groove 12 of the fixed guide 10, and the engaging projection 14 provided in the guide groove 12 is engaged with the engaging groove 14 of the snap connecting piece 11b. The holder 11 is fixed to the fixed guide 10 by engaging with.

[Problems to be Solved by the Invention] By the way, when the holder 11 is connected to the fixed guide 10, the holder 11 can be easily connected without using a tool or the like. Preferably. However, in the above-mentioned prior art, as shown in FIG. 6, the snap connecting piece 11b of the holder 11 is in a state of protruding from the guide groove 12, and particularly the tip portion of the snap connecting piece 11b is Flat cable 5
Since it faces the groove end of the guide groove 12 that is provided so as to penetrate in a direction substantially orthogonal to the direction of drawing out, it is possible to easily remove the holder 11 with a driver, a claw, or the like, which is preferable. Absent.

Therefore, it is conceivable to fix the holder 11 to the fixed guide 10 by means such as adhesion or welding. However, since the flat cable 5 or the like is provided between the holder 11 and the fixed guide 10, the adhesion is prevented. It is not preferable to fix it by welding or welding.

The present invention has been made in view of the above points, and an object of the present invention is to provide a cable reel in which a holder constituting a cable lead-out portion is prevented from being unintentionally separated from a fixed guide. It is in.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a fixed body or a movable body with a cable lead-out portion from the inner ring wall side provided on either the fixed body or the movable body. And a holder that is connected to the fixed guide by a snap coupling mechanism. The fixed guide accommodates the snap coupling piece of the holder in a non-protruding state. The feature is that the part is formed.

[Operation] With this configuration, when the holder is connected to the fixed guide, the snap connecting piece is housed in the housing portion. Therefore, even if a driver or other tool is used, the snap connecting piece is Since it becomes impossible to separate the holder from the accommodating portion, the holder and the fixed guide can be connected extremely firmly.

However, since the holder and the fixed guide are connected by a snap coupling mechanism, after the flat cable is pulled out from the fixed guide, the holder is extremely connected without using a special tool or the like. It becomes possible to connect easily.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3.

Thus, FIG. 1 is an exploded perspective view of the cable lead-out portion, FIG. 2 is an external view of the assembled state, and FIG. 3 is III-III of FIG.
FIG. In addition, in the present embodiment, since the configuration other than the cable lead-out portion is substantially the same as the above-mentioned conventional constituent members, the same or equivalent members are designated by the same reference numerals. The illustration and description thereof are omitted.

Here, a cable guide 20 for guiding the flat cable 5 provided to the movable body 1 to the outside has a fixed guide 21 and a holder 22, and the fixed guide 21 has a guide surface 21.
a and side walls 21b, 21b connected to the left and right of the guide surface 21a are provided, and the holder 22 is provided with a restriction wall 22a provided so as to face the guide surface 21a.
The flat cable 5 is led out to the outside along the space between 1a and the regulation wall 22a, which is the same as that of the above-mentioned conventional technique.

Further, the holder 22 uses a special tool or the like by inserting the snap coupling mechanism in the fixed guide 21 and the insertion portion 22c connected to the regulation wall 22a of the holder 22 into the cable outlet 1a of the movable body 1. There is no particular difference from the prior art in that it is fixed in a connected state by one-touch without any need.

Therefore, a pair of snap connecting pieces 22 provided on the holder 22
The b and 22b extend from the top of the holder 22 in a direction parallel to the restriction wall 22a, that is, in the guide direction of the flat cable 5, and the extension length is the height of the side wall 21b of the fixed guide 21. It's getting longer than that.

On the other hand, in order to guide the snap connecting piece 22b, the guide groove 23 formed in the side wall 22b of the fixed guide 21 has a guide surface 21a.
Is provided in a direction substantially parallel to, that is, in a direction orthogonal to the surface of the movable body 1. The depth of the guide groove 23 is substantially the same as or deeper than the thickness of the snap connecting piece 22b. Further, a through hole 24 for inserting the tip end portion of the snap connecting piece 22b is formed at a position continuous with the guide groove 23 in the movable body 1. Therefore, fixed guide
The guide groove 23 formed in the side wall 21b of 21 and the through hole 24 provided in the movable body 1 constitute a housing portion for housing the snap coupling piece 22b in a non-projecting state. In order to allow the snap connecting piece 22b to be smoothly inserted into the through hole 24, the tip portion of the snap connecting piece 22b is tapered.

Further, attach the snap connecting piece 22b of the holder 22 to the fixed guide 21.
The guide groove 23 in order to fix the guide groove 23 in the engaged state.
An engaging projection 25 is formed on the 23, and an engaging groove 26 that engages with the locking projection 25 is formed on the snap connecting piece 22b.

With this configuration, the holder 22 is separated from the fixed guide 21, the flat cable 5 is pulled out from the cable pull-out port 1a, and the flat cable 5 is guided to the outside along the guide surface 21a of the fixed guide 21. By pulling out and connecting the holder 22 to the fixed guide 21, the flat cable 5 can be led out to the outside in a state of being sandwiched and fixed between the fixed guide 21 and the holder 22. Become.

Thus, in order to connect the holder 22 to the fixed guide 21, first, the insertion portion 22c of the holder 22 is inserted into the cable outlet 1a, and the snap connection piece 22b is provided on the side wall 21b of the fixed guide 21. Push along the groove 23. As a result, the snap connecting piece 22b once rides on the engaging projection 25. However, since the snap connecting piece 22b has a spring property, it is possible to smoothly run on the engaging projection 25. Become. After that, when the tip of the snap connecting piece 22b is fitted into the through hole 24 and the engaging projection 25 is pushed to a position where it engages with the engaging projection 25, the holder 22 is connected to the fixed guide 21. Complete.

With such a simple operation, the tip portion of the snap connecting piece 22b can be moved by the movable body 1 without using a special tool.
It is inserted into the through hole 24 and is connected from the guide groove 23 in a non-projecting state. The holder 22 is connected and fixed to the fixed guide 21 in an extremely stable state, and the holder 22 cannot be separated from the fixed guide 21 even if a tool such as a driver is used.

Although the movable body is provided with the cable lead-out portion in the above-described embodiment, the cable lead-out portion may be provided on the fixed side. Also,
The cable accommodated in the cable accommodating portion between the movable body and the fixed body is not limited to the flat cable, and may be a coaxial cable, a round electric wire, or the like.

[Advantages of the Invention] As described above, according to the present invention, the cable guide portion is connected to the fixed guide integrally with the fixed body or the movable body, and is connected to the fixed guide by the snap coupling mechanism. The holder has a structure in which the snap connecting piece of the holder is housed in the fixed guide in a non-protruding state.Therefore, after the cable is led out along the fixed guide, the holder is fixed. It can be connected to the fixed guide very easily with one touch without using any tools. Moreover, after connecting the holder to the fixed guide, the holder can be separated from the fixed guide even by using a screwdriver or other tools. Will be extremely difficult.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a cable lead-out portion, FIG. 2 is an external view of the assembled state, and FIG. III-III cross-sectional views, and FIGS. 4 to 6 show the prior art. FIG. 4 is an exploded perspective view of a cable reel, FIG. 5 is an exploded perspective view of a cable lead-out portion, and FIG. FIG. 1: Movable body, 1a: Cable outlet, 5: Flat cable, 7: Fixed body, 20: Cable outlet, 21: Fixed guide, 21
a: Guide surface, 21b: Side wall, 22: Holder, 22a: Control wall, 22b:
Snap connection piece, 22c: Insert, 23: Guide groove, 24: Through hole, 2
5: engagement protrusion, 26: engagement groove.

Claims (1)

[Scope of utility model registration request] 1. A fixed body and a movable body rotatably attached to the fixed body, and between the inner ring wall of any one of the fixed body and the movable body and the outer ring wall of the other. With a flexible cable housed in a wound state for a plurality of turns,
In the one in which both ends in the winding direction of the flexible cable are fixed to the inner ring wall and the outer ring wall, and the cable is led out to the outside from the cable lead-out part, the cable lead-out part from the inner ring wall side, A fixed guide integrally provided on the fixed body or the movable body and a holder connected to the fixed guide by a snap coupling mechanism are provided. The snap guide connecting piece in the holder is not attached to the fixed guide. A cable reel having a configuration in which a housing portion for housing in a protruding state is formed.