Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1982-05-20
1985-04-23
Grimley, A. T.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
285161, 411 14, H02G 15007
Patent
active
045131724
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a cable fixing device which, on taking out a cable already wired on a body of an appliance, a switch box etc., fixes such a cable to the body of the appliance, the switch box etc.
BACKGROUND ART
The cable fixing device of this type is employed when inserting a cable through a plate material etc. so as to protect the cover of the cable against damage by the plate material of a chassis of a switch box etc. and at the same time to fix the cable and the plate material firmly, and also it is used in a switch box etc. together with a packing inserted into a housing thereof so as to prevent penetration of rain water etc. through a cable inserting hole.
Therefore, characteristics required of the cable fixing device of this type include that the cable can be firmly fixed, that the fixed cable will not become loose even after it has been repeatedly bent in a mechanical manner, that the fixed part has waterproofness and prevents rain water etc. from penetrating into the inside of e.g. a switch box etc. to which the cable has been installed, that the same cable fixing device can be widely applied to various kinds of cables having different outer diameters, that fixing of the cable can be effected by a simple operation, and so forth. Nevertheless, the conventional cable fixing devices have drawbacks and thus fail to meet the above described characteristics required of the cable fixing devices, for example, some, although they can clamp cables firmly and can withstand repeated, mechanical bending of the cable, have disadvantages that they suffer from poor waterproofness and that they are not widely applicable to cables having different outer diameters because fixing of the cable is given priority in construction; some have a complicated construction in order to enhance fixing of the cable and waterproofness and therefore have a disadvantages that the operation to install a cable is troublesome; some are only applicable to cables having a predetermined outer diameter and whenever they are to be applied to cables having a diameter other than the above, some of the parts have to be replaced, and so forth.
DISCLOSURE OF THE INVENTION
The present invention is a cable fixing device which has eliminated the various drawbacks inherent to the above described conventional cable fixing devices by superposing between an outer housing and an inner housing both of which can be fitted with each other by screwing, a hanging bell-shaped packing, a guiding ring having a guiding hole, and a tightening ring having a plurality of flexible fins, screwing said both housings together to clamp the cable with the tightening ring, thereby fixing said cable and at the same time resiliently contacting the hanging bell-shaped packing with the cable, thereby improving waterproofness.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 through FIG. 3 show a first embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view, FIG. 2 is a perspective view showing dissembled parts, and FIG. 3 is a vertical cross-sectional view explaining the function;
FIG. 4 is a vertical cross-sectional view of a second embodiment;
FIG. 5 is a vertical cross-sectional view of a third embodiment;
FIG. 6 is a vertical cross-sectional view of a fourth embodiment;
FIG. 7 is a vertical cross-sectional view of a fifth embodiment;
FIG. 8 is a vertical cross-sectional view of a sixth embodiment;
FIG. 9 is a vertical cross-sectional view of a seventh embodiment;
FIGS. 10(I) and 10(II) are plan views showing pertinent parts of an eighth embodiment; and FIG. 11 is a plan view showing pertinent parts of of a ninth embodiment.
BEST MODE OF CARRYING OUT THE INVENTION
FIG. 1 through FIG. 3 show the first embodiment of the present invention, in which (1) is an outer housing, which has a male screw part (2), a flange part (3) and a hexagonal part (4) formed integrally on its outer periphery, and on its inner periphery there are formed a channel (5) for inserting a packing and a female screw part (6) so that a ma
REFERENCES:
patent: 3352961 (1967-11-01), Simon
patent: 4033393 (1977-07-01), Bedi
Grimley A. T.
Kitagawa Industries Co., Ltd.
Tone D. A.
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