Buckles – buttons – clasps – etc. – Bale and package ties – hose clamps – Plastic band
Patent
1982-05-20
1984-04-03
Wilson, John J.
Buckles, buttons, clasps, etc.
Bale and package ties, hose clamps
Plastic band
248 74PB, B65D 6702, F16L 308
Patent
active
044398964
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a clamp for a bundle of cables for fixing such a bundle of cables after wiring to a chassis, a panel etc.
BACKGROUND ART
Conventionally, a clamp for a bundle of cables typically had a structure, such as, for example, that shown in FIG. 1, in which a C-shaped resilient arm (2) is formed integrally on a highly resilient plastic base (1), a clamp operating portion (3) is projectingly provided at or near the center of said resilient arm (2) and a hook-shaped engaging projection (5) at its free end (4), and there are provided at the position on the base (1) opposite to the free end (4) a retaining portion (7) and an engaging portion (10) consisting of an engaging claw (8) and a release operating portion (9) with an inserting groove (6) therebetween, and this is adapted for fixing the bundle of cables by inserting said bundle of cables between the resilient arm (2) and the base (1), then pushing down the clamp operating portion (3) and pushing the free end (4) into the inserting groove (6) while bending the engaging portion (10) outward to widen the space, and engaging the hook-shaped engaging projection (5) with the engaging claw (8), and in turn adapted for releasing the thus fixed bundle of cables by pushing down the release operation portion (9) in such way as to extend the inserting groove (6) thereby removing the hook-shaped engaging projection (5) from the engaging claw (8).
However, such a conventional clamp for a bundle of cables had disadvantages. First of all, once the bundle of cables has been inserted between the resilient arm (2) and the base (1), a repulsion force of the bundle of cables is generated to push away the resilient arm (2) outward and therefore a simple operation to push down the clamp operating portion (3) cannot provide a proper position for the free end (4) to be inserted into the inserting groove (6) and thus it is necessary to guide it with fingers, and moreover even after having been properly located, since the hook-shaped engaging dent (5) pushes away the engaging portion (10) outward and thus imposes a great load, insertion is difficult. In addition, after the bundle of cables has been fixed, since the repulsion force of the resilient arm (2) and the repulsion force of the bundle of cables itself are imposed on the engaging portion (10) and therefore it is necessary for the engaging portion (10) to have adequate strength in the outward direction, there has been a disadvantage that the force required to release the release operating portion (9) is inevitably increased as the result. Further, there has been another disadvantage that since the resilient arm (2) after having been fixed is not restricted in the transverse direction, i.e., the direction indicated by the arrow in the figure, if the resilient arm (2) receives some force in the direction indicated by the arrow in the figure by, for example, movement of the bundle of cables or the like, the free end (4) will move and slip away, thereby easily releasing the fixing. Still further, there has also been a disadvantage that since the space formed between the base (1) and the C-shaped resilient arm (2) is constantly the same, this cannot be adjusted to meet the change in diameter of the bundle of cables.
DISCLOSURE OF THE INVENTION
The present invention is a clamp for a bundle of cables which comprises a resilient plastic base, a C-shaped resilient arm integrally formed with the surface of the base, a guide portion provided on the base so as to oppose and meet with a free end of the C-shaped resilient arm, and an engaging portion provided opposite to the guide portion and having an inclined surface supported by a thin support wall, a claw part connected to the lower end of the inclined surface and a release operating portion projecting outward, the C-shaped resilient arm being provided with a plurality of ratchet-shaped projections in tiers on the outer surface near the free end except both edges thereof, and which is adapted for guiding the free end into the inserting groove by
REFERENCES:
patent: 3163712 (1964-12-01), Cochran
patent: 3515363 (1970-06-01), Fisher
patent: 3516631 (1970-06-01), Santucci
patent: 3529795 (1970-09-01), VanNiel
patent: 3542321 (1970-11-01), Kahabka
patent: 3637177 (1972-01-01), Santucci
patent: 3672615 (1972-06-01), Fiorentino
patent: 3847331 (1974-11-01), Vallinotto et al.
patent: 3942750 (1976-03-01), Noorily
patent: 4061299 (1977-12-01), Kurosaki
patent: 4312614 (1982-01-01), Palmer et al.
patent: 4317262 (1982-03-01), Wells, Jr.
Kitagawa Industries Co., Ltd.
Wilson John J.
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