CN-121840287-B - Power cable connecting terminal

CN121840287BCN 121840287 BCN121840287 BCN 121840287BCN-121840287-B

Abstract

The invention relates to the technical field of cable terminals, in particular to a power cable connection terminal which comprises a wiring unit, wherein the wiring unit comprises an insulating shell, a connecting sleeve is arranged in the insulating shell, two elastic clamping parts are symmetrically connected to the connecting sleeve, two jacket units are arranged and symmetrically connected to two ends of the insulating shell, and each jacket unit comprises an insulating sleeve arranged at the end part of the insulating shell. The wiring unit, the jacket unit and the compression unit are matched with each other, so that the functions of primary elastic clamping, secondary rigid clamping and tertiary insulating leather enclasping clamping can be realized, the insertion depth of the conductive wire core is accurately ensured, large-area close contact is realized, the contact resistance is greatly reduced, the integral mechanical anchoring of the cable is formed, and the connection strength of the cable and the connecting terminal is effectively improved.

Inventors

REN SHICHAO
CHEN ZHONGJUN
DU BINBIN
Zhao Daimeng
WANG WEIBO
MAO LEI

Assignees

吉林省中科电缆附件有限公司

Dates

Publication Date: 20260512
Application Date: 20260316

Claims (10)

1. A power cable connection terminal, comprising: the wiring unit comprises an insulating shell, a connecting sleeve is arranged in the insulating shell, and two elastic clamping parts are symmetrically connected to the connecting sleeve; The jacket unit is provided with two jacket parts which are symmetrically connected with two ends of the insulating shell, the jacket unit comprises an insulating sleeve arranged at the end part of the insulating shell, a plurality of jacket parts which are uniformly distributed in the circumferential direction are connected in the insulating sleeve, and the periphery of the insulating sleeve is connected with an extrusion part for pushing the plurality of jacket parts; The compression unit is arranged on the insulating shell and comprises two limiting parts symmetrically connected to the lower end of the insulating shell, and pushing parts are commonly connected to the two limiting parts; sequentially pressing the two elastic clamping parts, respectively inserting the two cables into two ends of the connecting sleeve, and then loosening the two cables, wherein the elastic clamping parts finish primary elastic clamping on the cable conductive wire cores, and the insulating leather at the end part of the cable is arranged in the insulating sleeve; The pushing part pushes the two side extrusion parts, the extrusion part compresses the cable insulation cover through the corresponding cover clamping parts to complete three-stage clamping, and the positions of the cable insulation cover and the conductive wire core are kept consistent.
2. The power cable connection terminal according to claim 1, wherein the elastic clamping portion comprises two pressing plates symmetrically arranged in the connecting sleeve, push-push columns sequentially sliding through the connecting sleeve and the insulating shell are arranged at the lower ends of the pressing plates, two lifting plates sequentially sliding through the connecting sleeve and the insulating shell are symmetrically arranged at the upper ends of the pressing plates, pressing plates are jointly arranged at the upper ends of the four lifting plates, and a reset spring is arranged between the lower ends of the pressing plates and the upper end of the insulating shell.
3. The power cable connecting terminal according to claim 1, wherein the skin clamping part comprises a movable plate which penetrates through the annular wall of the insulating sleeve in a sliding mode, a distance adjusting plate is arranged at one end, located inside the insulating sleeve, of the movable plate, two connecting springs are symmetrically arranged between the distance adjusting plate and the inner annular surface of the insulating sleeve, a sliding groove is formed in one end, close to the axis of the insulating sleeve, of the distance adjusting plate, a clamping plate is connected in the sliding groove in a sliding mode, and a pushing block is arranged between the clamping plate and the groove wall of the sliding groove and fixedly connected with the distance adjusting plate.
4. The power cable connection terminal according to claim 1, wherein the pressing portion comprises a sliding ring sleeved on the outer periphery of the insulating sleeve, an annular pressing inclined surface is arranged on the inner annular surface of the sliding ring, and two linkage rods are symmetrically hinged to the outer annular surface of the sliding ring.
5. The power cable connection terminal according to claim 1, wherein the limiting portion comprises a limiting frame mounted at the lower end of the insulating shell and having an opening facing the middle of the insulating sleeve, sliding through holes are formed in the front and rear side walls of the limiting frame, and a plurality of limiting teeth which are uniformly distributed from top to bottom are mounted on the inner end faces of the front and rear side walls of the limiting frame.
6. The power cable connecting terminal according to claim 5, wherein the pushing part comprises two sliding rail rods which are respectively arranged in the two limiting frames and are in a vertical state, the two sliding rail rods are sleeved with pushing frames in a sliding mode, the pushing frames are simultaneously hinged with the lower ends of the four linkage rods, pressing blocks are respectively arranged on the front frame wall and the rear frame wall of the pushing frames in a sliding mode, and one end of each pressing block, which is positioned in each pushing frame, is provided with a strip-shaped plate.
7. The power cable connection terminal according to claim 6, wherein the pushing portion further comprises a plurality of telescopic springs arranged between the two strip-shaped plates, a plurality of clamping teeth which are uniformly distributed from top to bottom are arranged on two sides of the pressing block, and the clamping teeth penetrate through the frame wall of the pushing frame in a sliding mode and are fixedly connected with the strip-shaped plates.
8. The power cable connection terminal according to claim 7, wherein the clamping teeth are matched with the limiting teeth, the clamping teeth are identical in structure with the limiting teeth and are right trapezoid structures, inclined surfaces of the clamping teeth face upwards, and inclined surfaces of the limiting teeth face downwards.
9. A power cable connection terminal according to claim 1, wherein a rubber sealing ring is mounted on the inner annular surface of the insulating sleeve close to the insulating shell.
10. A power cable connection terminal according to claim 3, wherein the clamping plate is provided with a clamping protrusion at one end close to the insulating sleeve, and a turning protrusion is provided at one end of the clamping plate far away from the insulating sleeve, and the turning protrusion is matched with the pushing block.

Description

Power cable connecting terminal Technical Field The invention relates to the technical field of cable terminals, in particular to a power cable connecting terminal. Background The connecting terminal is a core component for realizing cable conduction and line connection in an electrical system, is widely applied to scenes such as industrial power distribution, power transmission, new energy equipment and the like, and is reliable in connection, conductive in stability, mechanical in protection and convenient in construction, and the safe operation and long-term service life of the electrical circuit are directly determined. The existing cable connecting terminals mostly adopt traditional structures such as bolt compression type structures, cold pressing nested structures and the like, and can meet the basic conductive connection requirements, but the existing cable connecting terminals have obvious defects in the aspects of actual condition suitability and long-term operation reliability. The cold-pressed terminal is provided with a special crimping tool, and the bolt-type terminal is required to be assisted by a spanner, a torque spanner and other auxiliary apparatuses, so that the installation process is complicated, the time consumption is long, and the wiring efficiency of the cable is reduced. In addition, the existing connecting terminal only clamps the conductive wire core, mechanical anchoring is not realized on the insulating sheath of the cable synchronously, when the cable is pulled by external force, the insulating sheath and the conductive wire core are extremely easy to generate relative sliding, the conductive wire core is retracted and fails in contact if the conductive wire core is light, the wire core is exposed if the conductive wire core is heavy, and potential safety hazards such as short circuit and electric shock are brought, and the axial tensile force born by the cable can be directly concentrated at the connecting position of the terminal and the cable, so that the breakage and tearing of the conductive wire core and the tearing of the insulating sheath are easily caused after long-term use, the safety and stability of electric connection are seriously influenced, and the service life of the cable and the connecting terminal is reduced. Accordingly, it is desirable to provide a power cable connection terminal that improves cable connection efficiency, connection strength, and tensile strength. Disclosure of Invention Based on this, it is necessary to provide a power cable connection terminal for solving the technical problems set forth in the background art described above. The power cable connecting terminal comprises a wiring unit, wherein the wiring unit comprises an insulating shell, a connecting sleeve is arranged in the insulating shell, and two elastic clamping parts are symmetrically connected to the connecting sleeve. The power cable connecting terminal further comprises a jacket unit, the jacket unit is provided with two jacket units and symmetrically connected to two ends of the insulating shell, the jacket unit comprises an insulating sleeve arranged at the end part of the insulating shell, a plurality of jacket parts which are uniformly distributed in the circumferential direction are connected in the insulating sleeve, and the periphery of the insulating sleeve is connected with an extrusion part used for pushing the jacket parts. The power cable connecting terminal further comprises a pressing unit, wherein the pressing unit is arranged on the insulating shell and comprises two limiting parts symmetrically connected to the lower end of the insulating shell, and pushing parts are connected to the two limiting parts together. The two elastic clamping parts are pressed in sequence, the two cables are respectively inserted into the two ends of the connecting sleeve and then loosened, the elastic clamping parts complete primary elastic clamping on the conductive wire cores of the cables, and the insulating leather at the end parts of the cables is arranged in the insulating sleeve. The pushing part pushes the two side extrusion parts, the extrusion part compresses the cable insulation cover through the corresponding cover clamping parts to complete three-stage clamping, and the positions of the cable insulation cover and the conductive wire core are kept consistent. Preferably, the elastic clamping part comprises two compression plates symmetrically arranged in the connecting sleeve, a push-push column sequentially penetrating through the connecting sleeve and the insulating shell in a sliding mode is arranged at the lower end of each compression plate, two lifting plates sequentially penetrating through the connecting sleeve and the insulating shell in a sliding mode are symmetrically arranged at the upper end of each compression plate, compression plates are jointly arranged at the upper ends of the four lifting plates, and a reset spring is arranged between the lower e