END COLLET CLAMP
Patent Information
- Authority / Receiving Office
- RU · RU
- Patent Type
- Utility models
- Current Assignee / Owner
- МОРОЗОВ ИГОРЬ ВЛАДИМИРОВИЧ
- Filing Date
- 2026-02-10
- Publication Date
- 2026-06-30
AI Technical Summary
Existing collet-type wire termination clamps suffer from sleeve displacement relative to the housing, leading to wire abrasion and sharp cross-sectional changes due to insufficient fixation and a large chamfer angle.
The collet end clamp is designed with a welded seam to secure the sleeve to the housing and a chamfered inner surface with an angle less than 45° to prevent sleeve displacement and smooth wire transition.
Prevents sleeve displacement and wire abrasion by ensuring stable fixation and gradual cross-sectional change, enhancing operational reliability.
Smart Images
Figure 00000001_ABST
Abstract
Description
[0001] This utility model relates to the field of electrified rail transport, specifically to wire termination clamps, and is intended for terminating both stranded and contact wires. A collet-type wire termination clamp is known, consisting of a clamp body, a sleeve, and a collet with serrations on the inner surface. Patent No. 164073: Collet-type termination clamp.
[0002] The disadvantage of this clamp is the lack of fixation of the sleeve relative to the housing, which can lead to the displacement of the sleeve relative to the housing during installation and operation Fig. 1, even if the clamp design provides for flaring of the sleeve nose Fig. 2, the press fit may come loose, which can lead to contact of the wire with the clamp body and its abrasion; a sufficiently large chamfer angle α on the inner surface of the collet on the side of the smallest diameter, which leads to a sharp change in the cross-sectional area of the wire and its possible nibbling.
[0003] Technical result – elimination of the possibility of displacement of the sleeve relative to the housing during installation and operation due to fixation of the sleeve relative to the housing by a welded seam.
[0004] The collet end clamp consists of a housing 1 housing a sleeve 2 with a conical inner surface, and a collet 3 with an internal knurling and a conical-cylindrical outer surface. The sleeve is secured to the housing by one or more welds. The inner surface of the collet on the side with the smallest diameter is chamfered with an angle α of less than 45°.
[0005] The clamp is assembled as follows. Prepared wire 5 is passed through the clamp body and through sleeve 2. Collet 3 with spring 4 is placed onto the wire. The collet segments are evenly spaced around the perimeter of the wire cross-section. Clamp body 1 with sleeve 2 are pushed onto collet 3. When the wire is pulled, the collet wedges the wire in the sleeve.
[0006] This collet clamp prevents the sleeve from shifting relative to the housing during installation and operation, preventing the wire from coming into contact with the clamp housing and causing chafing. A chamfer with an α angle of less than 45° on the inner surface of the collet on the smallest diameter side ensures a smoother change in wire cross-section.
Claims
1. A collet-type end clamp for multi-wire and contact wires, comprising a housing and a sleeve with a conical inner surface and a collet with an internal knurling placed in it, wherein the sleeve is fixed relative to the housing by a welded seam.
2. A clamp according to paragraph 1, characterized in that on the inner surface of the collet on the side of the smallest diameter there is a chamfer with an angle α of less than 45°.