EP0267685A2
Expired / Lapsed
EP
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Control cable adjuster device
Assignee: FKI Industries Inc
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Filing: 1987-10-09
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Granted: —
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Expires: 2007-10-09
Abstract
Abstract A control cable adjuster device (Figure 1) for connection into and tensioning of a control cable run includes a termination member rod (13) extending into a tubular housing (10) through a locating means or insert (11). Collet members (14) biassed by a circumferential spring (17) are positioned on the insert (11) and are formed with 90° triangular profile serrations (31) co-acting with serrations (32) on the rod (13). A helical spring (19) acting between the insert (11) and a collar (21) on the rod (13) acts to induce tension in the cable run. On applying actuating tension to the device, the frusto-conical face (16) on the insert (11) acts on first part frusto-conical faces (15) having a slightly greater cone angle on the collet members to urge same into locking engagement with the rod (13). An axially movable release tube (27) with a frusto-conical head (33) co-acts with second part frusto-conical faces (30) on the collet members and is actuable to pivot the collet means radially outwardly about lips (23) seated in a wider groove (24) in the insert to permit compression of the spring (19) by tensioning the rod (13). If the cable run tends to become slack, the force in the helical spring (19) overcomes the radial components of the forces across the serrations (31, 32) to permit the serrations (31) to ratchet relative to the serrations (32) by the collet members (14) pivoting about the lips (23) and thereby cause the slack to be removed.
Inventors
- 👤 Miroslav Jaksic
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:16
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/10; F16C1/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
288 words
A control cable adjuster device including a tubular housing (10) having at one end a first anchorage (12) connectable into a cable run and at the other end locating means (11) for a termination member (13) movably extending co-axially of the tubular housing (10) between a position fully retracted into, and a position fully extended from, the tubular housing, the termination member (13) being formed on the surface thereof with circumferential serrations (32) engageable with collet members (14) and, on the end thereof remote from the tubular housing, a second anchorage connectable into the cable run, characterised in that first resilient means (19) bias the termination member toward the position fully retracted into the tubular housing, the collet members (14) each have a body portion and, extending axially from the body portion, an arm (22) having an end portion (23) locted on the locating means (11) for pivoting through a restricted arc on an axis generally tangential to the locating means (11) and for restricted axial movement relative to the locating means (11), each body portion being formed on radially inner faces with serrations (31) adapted to co-act with the serrations (32) on the termination member (13), second resilient means (17) biassing the collet members (14) radially inwardly, an internal frusto-conical surface (16) in the locating means (11) at the axially inner end (11a) thereof arranged to co-act with first, external part frusto-conical, surfaces (15) on the collet members (14) such that relative axial movement of the collet members (14) in a direction axially outwardly of the tubular housing (10) urges the collet members (14) radially inwardly and thereby urges the serrations (31) on the collet members into engagement with the serrations (32) on the termination member (13).
Claim 2
Dependent Claim
288 words
A control cable adjuster device including a tubular housing (10) having at one end a first anchorage (12) connectable into a cable run and at the other end locating means (11) for a termination member (13) movably extending co-axially of the tubular housing (10) between a position fully retracted into, and a position fully extended from, the tubular housing, the termination member (13) being formed on the surface thereof with circumferential serrations (32) engageable with collet members (14) and, on the end thereof remote from the tubular housing, a second anchorage connectable into the cable run, characterised in that first resilient means (19) bias the termination member toward the position fully retracted into the tubular housing, the collet members (14) each have a body portion and, extending axially from the body portion, an arm (22) having an end portion (23) locted on the locating means (11) for pivoting through a restricted arc on an axis generally tangential to the locating means (11) and for restricted axial movement relative to the locating means (11), each body portion being formed on radially inner faces with serrations (31) adapted to co-act with the serrations (32) on the termination member (13), second resilient means (17) biassing the collet members (14) radially inwardly, an internal frusto-conical surface (16) in the locating means (11) at the axially inner end (11a) thereof arranged to co-act with first, external part frusto-conical, surfaces (15) on the collet members (14) such that relative axial movement of the collet members (14) in a direction axially outwardly of the tubular housing (10) urges the collet members (14) radially inwardly and thereby urges the serrations (31) on the collet members into engagement with the serrations (32) on the termination member (13).
Claim 3
Dependent Claim
46 words
A control cable adjuster device as claimed in Claim 1, characterised in that the end portion of each collet member (14) includes an inwardly directed lip (23) adapted to be located, whilst permitting restricted axial movement, in a circumferential groove (24) in the locating means (11).
Claim 4
Dependent Claim
49 words
A control cable adjuster device as claimed in Claim 1 or 2, characterised in that the cone angle of the internal frusto-conical surface (16) in the locating means (11) is slightly less than the cone angle of the first, external, part fursto-conical surfaces (15) on the collet members (14).
Claim 5
Dependent Claim
39 words
A control cable adjuster device as claimed in any preceding claim, characterised in that the second resilient means (17) include a circumferential spring positioned in aligned circumferentially extending grooves (18) in radially outer faces of the collet members (14).
Claim 6
Dependent Claim
28 words
A control cable adjuster device as claimed in any preceding claim, characterised in that the serrations (31,32) are formed as axially spaced circumferential grooves of 90° triangular profile.
Claim 7
Dependent Claim
22 words
A control cable adjuster device as claimed in any preceding claim, characterised in that the serrations are formed as helical screw threads.
Claim 8
Dependent Claim
79 words
A control cable adjuster device as claimed in any preceding claim, characterised in that a release tube (27) extends co-axially of and adjacent the termination member (13), through the locating means (11) and, at the axially inner end, is formed with an external frusto-conical surface (33) arranged to co-act with second internal part frusto-conical surfaces (30) on the collet members (14) such that relative movement of the release tube (27) axially inwardly urges the collet members (14) radially outwardly.
Claim 9
Dependent Claim
42 words
A control cable adjuster device as claimed in Claim 7, characterised in that the release tube (27) is formed at the axially inner end with an enlarged head (28) arranged to be seatable in a counter-bore (29) in the locating means (11).
Claim 10
Dependent Claim
52 words
A control cable adjuster device as claimed in any preceding claim, characterised in that the first resilient means (19) include a helical spring extending between a seating (20) on the locating means (11) and a collar (21) attached to the termination member at an end portion located within the tubular housing (10).
References Cited (Backward Citations)
No citation records indexed.
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