Wire attachment
Wire attachment and attachment method for a sheathed wire including a wire and a sheath coaxially surrounding the wire, the wire attachment including: a housing; an axial bore inside the housing including an opening adapted to receive the sheathed wire; a spool slidably arranged inside the bore, the spool receiving the wire and including an engagement member for fixedly engaging the wire, such that any longitudinal movement of the wire will be transmitted to the spool; a sheath attachment member for fixing the sheath to the wire attachment inside the axial bore at a distance from the receiving bore, such that the spool and the wire are free to move axially with respect to the sheath. The sheath attachment member is arranged to exert a substantially radial pressure onto the surface of the sheath, such that it may be attached essentially without disturbing the axial position of the sheath.
1. Wire attachment for a sheathed wire including a wire and a sheath surrounding the wire, the wire attachment comprising:
a housing,
an axial bore inside the housing including an opening adapted to receive the sheathed wire;
a spool slidably arranged inside the axial bore, the spool being adapted to receive the wire and comprising an engagement member for fixedly engaging the wire to the spool, such that any longitudinal movement of the wire will be transmitted to the spool,
a sheath attachment member for fixing the sheath inside the axial bore at a distance from the spool, such that the spool and the wire are free to move axially with respect to the sheath,
wherein the sheath attachment member is arranged to exert a substantially radial pressure onto the outer surface of the sheath whereby the sheath attachment member may be attached essentially without disturbing the axial position of the sheath,
an aperture is provided through one side of the housing giving access to manipulation of the engagement member in the axial bore from outside of the housing, and
a mutual engagement between the spool and the axial bore allowing axial movement therebetween but preventing rotational movement of the spool inside the axial bore, such that that the engagement member will always face the side of the housing comprising the aperture.
2. Wire attachment according to claim 1 , wherein the sheath attachment member comprises a retaining screw arranged to be screwed substantially perpendicular into engagement with the outer surface of the sheath.
3. Wire attachment according to claim 1 , wherein the mutual engagement includes a track arranged longitudinally in the axial bore, the engagement member being arranged to protrudes with respect to the exterior surface of the spool and forming a projection which fits into said track, whereby the projection of the engagement member and the track interacts such that the spool may slide axially in the bore but is prevented from rotational movement.
4. Wire attachment according to claim 1 , wherein the mutual engagement includes a track which extends continuously to the opening of the axial bore, thus providing a drainage from inside the axial bore past the sheath attachment member to outside of the housing.
5. Wire attachment according to claim 1 , wherein the spool is spring loaded towards an initial position, and wherein the engagement member is positioned in line with the aperture in the housing when the spool is in an initial position thereof.