CN115133491B

CN115133491B - Cable terminal connecting device

Info

Publication number: CN115133491B
Application number: CN202211050061.XA
Authority: CN
Inventors: 刘冰; 尹超; 张培军; 楚孔飞
Original assignee: Shandong Bocheng Electric Co ltd
Current assignee: Shandong Bocheng Electric Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-29
Anticipated expiration: 2042-08-31
Also published as: CN115133491A

Abstract

The invention relates to the technical field of cable equipment application, and particularly discloses a cable terminal connecting device which comprises a wire end joint component, a connecting terminal joint component and a conducting patch set, wherein the wire end joint component consists of a cable outer sleeve connecting shell and a stripping end embedded casing; after the shrink paster of pressure laminating is inboard to the income lock sleeve shrink, both are connected with the end and aim at paster surface contact, the shrink paster of pressure laminating will attach the ring extrusion, and then increase the contact friction who aims at the paster and the required contact surface of electrical conductivity of income lock sleeve and end connection, pressfitting activity restriction portion observes the chamber through the contact position simultaneously and slides the back, when being in with the state that the control identification element that resets overlaps, promptly income lock sleeve bottom is connected with the end and is aimed at the paster and fully laminates, the control identification element that resets this moment starts to show assembly personnel installation laminating stability through the light source performance, reduce cable termination and copper bar contact resistance after guaranteeing the laminating degree.

Description

Cable terminal connecting device

Technical Field

The invention relates to the technical field of cable equipment application, in particular to a cable terminal connecting device.

Background

Because the conductive characteristic of the material of resistance, the conductive contact area, ambient temperature, and the power influence that resistance can bear, can cause contact resistance's increase, wherein the contact area of conductive contact is produced the change easily, for example when complete sets are to the maximum load current test, because the screw, the gasket all is steel material, and the copper nose, the copper bar is copper material, when heavy current work, its temperature is different to the influence of two kinds of materials, under thermal expansion effect, the nut will have some skew, hardly recover original position under the effect of not having the external force after the material thermal expansion, can cause the effective contact surface of copper nose and copper bar to influence the contact steadiness along with the temperature change, consequently, will guarantee the contact reliability between cable terminal connector and the copper bar tie point when the maximum load current test.

Because the connected mode of common cable termination connecting piece and copper bar is after the installation operation is accomplished, when its mounting point is in narrow position in the cabinet, operating personnel is because alignment when the difficult butt joint contact surface installation of place restriction, the judgement of targets in place is made in the installation to the state of compressing tightly, simultaneously in the later stage cause the temperature influence to make the connecting piece thermal expansion stereo set produce the contact surface skew because of heavy current work, can cause the virtual joint to produce resistance increase, the production of this information can't be obtained when operating personnel patrols and examines, consequently possess the potential safety hazard under this phenomenon produces for a long time. To this end, we propose a cable termination connection device.

Disclosure of Invention

The invention mainly aims to provide a cable terminal connecting device. In order to achieve the purpose, the invention adopts the technical scheme that: a cable terminal connecting device comprises a wire end joint member, a connection terminal joint member and a conduction patch group, wherein the wire end joint member consists of a cable outer sleeve joint shell and a stripping end embedding casing, the cable outer sleeve joint shell is in threaded connection with the stripping end embedding casing, the stripping end embedding casing is fixedly connected with a butt joint embedding end, the butt joint embedding end is inserted into the inner side of the connection terminal joint member after the cable joint end is embedded into the inner side for butt joint installation, the cable outer sleeve joint shell is fixedly connected with a wire inlet locking part, the wire inlet locking part is sleeved on the outer side of the cable joint end for anti-slip limitation after the cable joint end is embedded into the inner side of the butt joint end, the bottom end of the connection terminal joint member is provided with the connection terminal joint member, the connection terminal joint member comprises an insulation protection casing and a through connection terminal seat, the insulation protection casing and the through connection end seat are fixedly connected, one end of the butt connection embedding end is clamped and connected with the inner side of the insulation protection casing, a gradually-changed curved assembly cavity matched with the butt connection embedding end is formed in the inner side of the insulation protection casing, the connection terminal butt connection component comprises a bottom through contact patch, a take-in lock sleeve, a pressure fit contraction patch, a pressure fit ring and a bottom connection alignment patch, the bottom through contact patch is fixedly connected with the bottom of the insulation protection casing and used for electrically communicating the through connection end seat with the take-in lock sleeve, the take-in lock sleeve is fixedly connected with the bottom of the bottom through contact patch, the pressure fit contraction patch is in sliding connection with the take-in lock sleeve, and the pressure fit ring is annularly sleeved on the outer side of the pressure fit contraction patch, the bottom connection alignment patch is fixedly connected to the bottom of the pressure fit contraction patch, and when the bottom through contact patch is in threaded connection with the copper bar connecting piece, the contraction degree of the inner side of the retraction lock sleeve is judged through the pressure fit contraction patch, and the joint state of the bottom connection alignment patch and the copper bar connecting face is judged.

The invention has the further improvement that the conduction patch set comprises a first bonding copper guide sheet and a second bonding copper guide sheet, the first bonding copper guide sheet is fixedly connected to the inner wall of the butt-joint embedding end, the second bonding copper guide sheet is fixedly connected to the inner wall of the insulating protection casing, and after the insulating protection casing and the butt-joint embedding end are mutually clamped, the electric conduction between the cable terminal and the through connection end seat is realized through the first bonding copper guide sheet and the second bonding copper guide sheet.

The invention is further improved in that a reset monitoring identification unit for prompting in-place contact is arranged on the surface wall of the retraction lock sleeve, a contact position observation cavity is formed in the retraction lock sleeve, a pressing movable limiting part which slides longitudinally along the inner side of the contact position observation cavity is fixedly connected to the inner side of the pressure fit contraction patch, and the bottom connection alignment patch is in place fit with the copper bar connecting surface after the pressing movable limiting part is overlapped and aligned with the reset monitoring identification unit.

The invention is further improved in that an internal thread connecting groove screwed with the copper bar connecting piece is formed in the inner side of the receiving lock sleeve, and after the receiving lock sleeve is fixed with the copper bar connecting piece through the internal thread connecting groove, the pressed attaching ring shrinks under the extrusion force of the receiving lock sleeve to increase the contact surface and the friction force between the receiving lock sleeve and the bottom connection aligning paster.

The invention has the further improvement that a pressing and positioning concave strip for providing an extrusion operation surface when the cable is pressed and limited is embedded in the inner side of the butt joint embedding end head.

The invention has the further improvement that the reset monitoring identification unit consists of a non-self-locking switch, a lamp bead and a buzzer, the non-self-locking switch, the lamp bead and the buzzer are all fixedly connected with the outer wall of the receiving lock sleeve, and the outer wall of the pressing movable limiting part is fixedly connected with a connecting sheet.

A further improvement of the present invention is a method for using a cable termination connection device, comprising the steps of:

s1, firstly sleeving a wire inlet locking part at the outer side of a cable joint, placing a stripping end into a casing and screwing and installing a cable outer sleeve joint shell, so that a cable skin and a cable core part are positioned at the position of a butt-joint embedded end in the inner side of the stripping end placed into the casing, extruding a press-fit positioning concave strip part through a wire pressing pliers to realize press-fit limit on a cable, and then mutually inserting the butt-joint embedded end and a gradual change curved assembly cavity to enable a first joint copper guide sheet and a second joint copper guide sheet to mutually contact and then complete electric conduction between the cable and a connection terminal joint component;

and S2, after the assembly of the wire end joint component and the connection terminal joint component is completed, inserting the copper bar connecting piece into the position of the withdrawing lock sleeve through the bottom connection alignment patch, screwing the copper bar connecting piece and the withdrawing lock sleeve through threads of the copper bar connecting piece and the withdrawing lock sleeve to enable the copper bar connecting piece to enter the inner side of the through connection terminal base, enabling the bottom connection alignment patch to be in contact with the surface of the copper bar at the moment, enabling the pressure fit shrinkage patch to slide towards the inner side of the withdrawing lock sleeve, enabling the pressed attachment ring to be in contact with the withdrawn lock sleeve after the pressure fit ring retracts towards the inner side of the pressure fit shrinkage patch, enabling the bottom surface of the pressed attachment ring to be in contact with the bottom connection alignment patch to increase the contact friction force between the withdrawing lock sleeve and the bottom connection alignment patch until the pressing movable limiting part slides through the contact position observation cavity and is in a state of being overlapped with the reset monitoring identification unit, namely fully fitting the bottom of the lock sleeve and the bottom connection alignment patch, and the pressed attachment ring to be in place, further keeping the pressing connection contact with the contact position of the copper bar connecting joint and the reliability of the cable after connection.

Compared with the prior art, the copper bar connecting piece is screwed into the inner side of the through connecting end seat through the screw thread, the pressure fit contraction patch contracts towards the inner side of the retraction lock sleeve, when the pressure fit contraction patch and the bottom connection alignment patch are in surface contact, the pressure fit contraction patch extrudes the attachment ring, further the contact friction force between the retraction lock sleeve and the bottom connection alignment patch is increased, the contact surface required by electrical conduction is increased, meanwhile, the pressing movable limiting part slides through the contact position observation cavity and is in a state of overlapping with the reset monitoring identification unit, namely, the bottom of the retraction lock sleeve is fully attached to the bottom connection alignment patch, the reset monitoring identification unit is started to prompt an assembler to install and attach stability through light source performance, further, after finishing is prompted according to the light source performance, the attachment degree is guaranteed, and the contact resistance of a cable terminal and a copper bar contact is reduced.

Compared with the prior art, the invention generates deviation between the income lock sleeve and the bottom connection alignment patch in the later period due to overlarge current, so that the income lock sleeve and the pressure fit contraction patch expand and extend to influence an electric conduction contact surface, and after the head end of the stitching activity limiting part and the position of the resetting monitoring identification unit are not in an overlapped state any more, the resetting monitoring identification unit can trigger virtual connection state warning, so that an inspector can quickly obtain the condition and correct the part in time, and the effect of reducing potential safety hazard is achieved.

Drawings

Fig. 1 is a view showing a cable terminal connection device according to the present invention.

Fig. 2 is an isometric view of a cable termination connection apparatus of the present invention.

Fig. 3 is a bottom view of a cable termination connection device of the present invention.

Fig. 4 is a schematic structural diagram of a copper bar and a copper bar connecting piece in the cable terminal connecting device of the present invention.

Fig. 5 is a sectional view of a through connection terminal seat, a connection terminal docking member, a copper bar and a copper bar connector in a cable terminal connection device according to the present invention.

Fig. 6 is a front view of a feedthrough connection header and a connection terminal mating member of a cable termination connection assembly of the present invention.

Fig. 7 is an enlarged view of a portion a in fig. 6.

In the figure: 1. a wire end engagement member; 11. connecting a shell outside the cable; 12. the stripping end is arranged in the casing; 13. butt-jointing and embedding the end heads; 131. pressing and positioning the concave strips; 14. a wire-entry locking part; 2. a connection terminal engagement member; 21. an insulating protective housing; 22. a gradual curved assembly cavity; 23. a through connection end seat; 3. conducting the patch group; 31. a first copper bonding guide sheet; 32. a second copper conducting sheet is attached; 4. connecting a terminal docking member; 41. bottom through contact patch; 42. the lock sleeve is put in; 421. resetting the monitoring identification unit; 4211. a self-locking switch is not arranged; 4212. a lamp bead; 4213. a buzzer; 422. a contact position observation cavity; 423. an internal thread connecting groove; 43. pressing and fitting the contraction patch; 431. a pressing movable limiting part; 432. splicing; 44. pressing and attaching the ring; 45. the bottom is connected with an alignment patch; 5. copper bars are arranged; 51. copper bar connecting piece.

Detailed Description

The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting of the present patent, wherein certain elements may be omitted, enlarged or reduced in size to better illustrate the detailed description, and not to represent actual dimensions, and wherein certain well-known structures and descriptions may be omitted from the drawings so that those skilled in the art can understand that based on the detailed description of the present invention, all other detailed descriptions that may be obtained by those skilled in the art without making any creative effort may be within the scope of the present invention.

Examples

Referring to fig. 1-7, a cable terminal connection device comprises a cable terminal connection member 1, a connection terminal connection member 2 and a conduction patch set 3, wherein the cable terminal connection member 1 comprises a cable sheath connection 11 and a stripping end insertion casing 12, the cable sheath connection 11 is in threaded connection with the stripping end insertion casing 12, the stripping end insertion casing 12 is fixedly connected with a butt insertion end 13, the butt insertion end 13 is inserted into the inner side of the cable terminal connection and is used for butt-joint installation of the inner side of the connection terminal connection member 2, the cable sheath connection 11 is fixedly connected with a wire insertion locking part 14, the wire insertion locking part 14 is sleeved on the outer side of the cable terminal connection and is used for anti-slip limitation after the cable terminal connection end is inserted into the inner side of the butt insertion end 13, the connection terminal connection member 4 is installed at the bottom end of the connection terminal connection member 2, the connection terminal connection member 2 comprises an insulation protection casing 21 and a through connection terminal seat 23, the insulation protection casing 21 is fixedly connected with the through connection end seat 23, one end of the butt joint embedding end 13 is clamped and connected to the inner side of the insulation protection casing 21, the inner side of the insulation protection casing 21 is provided with a gradual change curved assembly cavity 22 matched with the butt joint embedding end 13, the connection terminal butt joint component 4 comprises a bottom through contact patch 41, a receiving lock sleeve 42, a pressure fit contraction patch 43, a pressure fit attachment ring 44 and a bottom connection alignment patch 45, the bottom through contact patch 41 is fixedly connected to the bottom of the insulation protection casing 21 and used for electrically conducting the through connection end seat 23 and the receiving lock sleeve 42, the receiving lock sleeve 42 is fixedly connected to the bottom of the bottom through contact patch 41, the pressure fit contraction patch 43 is in sliding connection with the receiving lock sleeve 42, and the pressure fit attachment ring 44 is sleeved on the outer side of the pressure fit contraction patch 43, the bottom connection alignment patch 45 is fixedly connected to the bottom of the pressure fit shrinkage patch 43, and when the income lock sleeve 42 is in threaded connection with the copper bar connecting piece 51, the bottom connection alignment patch 45 and the copper bar 5 connection surface fit state are judged to the inner side shrinkage degree of the income lock sleeve 42 through the pressure fit shrinkage patch 43.

In this embodiment, before the cable terminal connector portion and the copper bar 5 are installed, the wire locking portion 14 is firstly sleeved on the outer side of the cable terminal connector, after the installation, the stripped end is placed between the casing 12 and the cable jacket contact shell 11 to be assembled in a threaded screwing manner, after the assembly, the stripped core portion and part of the skin of the cable terminal connector are located on the inner side of the casing 12, until the core portion of the cable terminal connector reaches the position of the butt-joint embedded end 13, the cable is pressed and clamped on the press-fit positioning concave strip 131 and is extruded by the cable pressing clamp, so that the cable is pressed and limited at the position of the press-fit positioning concave strip 131 and the butt-joint embedded end 13, a rubber layer is arranged on the inner side of the wire locking portion 14, after the cable placed on the inner side of the casing 12 is in contact with the rubber layer on the inner side of the wire locking portion 14, friction between the cable and the cable pressing clamp-fit concave strip 131 is increased, so as to increase the assembly stability of the cable and the cable terminal, after the stripping end is placed on the cable terminal connector portion, the copper terminal connector contact sleeve 21 and the copper guide strip 21, and the copper guide member are connected to each other, and the copper guide sheet 22 are connected to complete the electrical connection between the copper contact.

Wherein, the inner side of the receiving lock sleeve 42 is provided with an internal thread connecting groove 423 screwed with the copper bar connecting piece 51, and after the receiving lock sleeve 42 is fixed with the copper bar connecting piece 51 through the internal thread connecting groove 423, the pressed attaching ring 44 shrinks under the extrusion force of the receiving lock sleeve 42 to increase the contact surface and the friction force between the receiving lock sleeve 42 and the bottom connection aligning patch 45; after the assembly of the line end joint member 1 and the connection terminal joint member 2 is completed, the copper bar connecting member 51 (in this embodiment, a bolt welded to the surface of the copper bar 5) is slidably inserted into the inner side of the bottom connection alignment patch 45, until the copper bar connecting member 51 reaches the bottom position of the receiving lock sleeve 42, an operator screws the through connection end seat 23 by screwing, so that the internal thread connecting groove 423 formed in the inner side of the receiving lock sleeve 42 is engaged with the internal and external threads of the copper bar connecting member 51, until the copper bar connecting member 51 enters the inner side position of the through connection end seat 23 under the action of the threads, the bottom connection alignment patch 45 fixed at the bottom of the pressure fit shrinkage patch 43 is in surface contact with the copper bar 5, and the distance between the receiving lock sleeve 42 and the bottom connection alignment patch 45 is reduced, in the process of reducing the distance between the receiving lock sleeve 42 and the bottom connection alignment patch 45, because the receiving through connection end seat 23 and the receiving lock sleeve 42 is integrally fixed by the bottom contact patch 41, the through connection end seat 23 and the receiving bottom contact patch 45 are lowered, so that the pressure contact patch 43 is pressed and the bottom contact patch 45 is pressed and the pressing contact patch 44 when the bottom contact patch is pressed and the pressing contact patch 42 is pressed and the bottom contact patch 45, and the pressing contact patch is pressed, and the pressing contact patch 44 is pressed and the bottom contact patch is pressed and the pressed contact patch 45 is reduced, the whole electrifying contact stability of the connector is kept, the assembly between the retractable lock sleeve 42 and the copper bar connecting piece 51 is completed at the moment, when the pressure fit shrinkage patch 43 shrinks towards the inner side of the retractable lock sleeve 42, because the press fit movable limiting part 431 and the pressure fit shrinkage patch 43 are in a fixed connection mode to realize the assembly, when the pressure fit shrinkage patch 43 shrinks towards the inner side of the retractable lock sleeve 42 due to the reduction of the distance between the retractable lock sleeve 42 and the bottom connection alignment patch 45, because the press fit movable limiting part 431 and the pressure fit shrinkage patch 43 are integrally and fixedly installed, the press fit movable limiting part 431 can slide along with the pressure fit shrinkage patch 43, the movement is synchronously generated along the inner side of the contact position observation cavity 422 arranged on the retractable lock sleeve 42, until the press fit movable limiting part 431 moves synchronously along with the sliding retraction of the pressure fit shrinkage patch 43, the pressure fit shrinkage patch 43 is completely retracted into the inner side of the lock sleeve 42, at the moment, the press fit movable limiting part 431 is overlapped with the reset monitoring identification unit 421, the position representing that the bottom of the retractable lock sleeve 42 is fully jointed with the bottom connection alignment patch 45, and the assembly between the retractable lock sleeve 42 and the copper bar connecting piece 51 is completed.

The conduction patch group 3 comprises a first attached copper guide sheet 31 and a second attached copper guide sheet 32, the first attached copper guide sheet 31 is fixedly connected to the inner wall of the butt-joint embedded end 13, the second attached copper guide sheet 32 is fixedly connected to the inner wall of the insulating protection casing 21, and after the insulating protection casing 21 and the butt-joint embedded end 13 are clamped with each other, the electric conduction between the cable terminal and the through connection end seat 23 is realized through the first attached copper guide sheet 31 and the second attached copper guide sheet 32; after combining through buckling each other with insulating protection cover shell 21 and butt joint embedding end 13 between first laminating copper conducting strip 31 and the second laminating copper conducting strip 32, through the electrically conductive intercommunication after first laminating copper conducting strip 31 and the mutual contact of second laminating copper conducting strip 32, the electric property that makes through contact paster 41 and cable joint end switches on at the bottom of the end of through connection end seat 23, when convenient in the later stage with cable end plug, also can play the effect of maintaining switch on stability.

The retractable lock sleeve 42 is provided with a reset monitoring identification unit 421 for prompting in-place contact on the surface wall, the retractable lock sleeve 42 is provided with a contact position observation cavity 422, the inner side of the pressure fit shrinkage patch 43 is fixedly connected with a press fit movable limiting part 431 which longitudinally slides along the inner side of the contact position observation cavity 422, the bottom connection alignment patch 45 is in-place fit with the connecting surface of the copper bar 5 after the press fit movable limiting part 431 is overlapped and aligned with the reset monitoring identification unit 421, the reset monitoring identification unit 421 consists of a non-self-locking switch 4211, a lamp bead 4212 and a buzzer 4213, the non-self-locking switch 4211, the lamp bead 4212 and the buzzer 4213 are all fixedly connected to the outer wall of the retractable lock sleeve 42, and the outer wall of the press fit movable limiting part 431 is fixedly connected with a connecting piece 432; in this embodiment, both the lamp bead 4212 and the buzzer 4213 are electrically connected with the non-self-locking switch 4211, and the specific monitoring principle of the reset monitoring identification unit 421 is as follows, when the retractable lock sleeve 42 and the copper bar connector 51 are installed and assembled, since the copper bar connector 51 is screwed into the inner side of the retractable lock sleeve 42 under the action of the screw thread of the retractable lock sleeve 42, the distance between the retractable lock sleeve 42 and the bottom connection alignment patch 45 is reduced, and at this time, the pressure fit shrinkage patch 43 slides and shrinks towards the inner side of the retractable lock sleeve 42, so that the pressing movable limiting part 431 installed on the pressure fit shrinkage patch 43 slides along the path inside of the contact position observation cavity 422 in a limiting manner until the contact end contact piece 432 installed at the end part of the pressing movable limiting part 431 slides, and when the contact end contact piece 432 is in an overlapped alignment state with the non-self-locking switch 4211, the non-self-locking switch 4211 is triggered to be opened by the contact extrusion of the contact end contact piece 432, further, the lamp bead 4212 is lighted by the contact, extrusion and energization of the connecting sheet 432 when the self-locking switch 4211 is not provided, when the lamp bead 4212 is lighted, namely the contact surface between the front bottom connecting and aligning patch 45 and the retraction lock sleeve 42 is kept stable, and if the retraction lock sleeve 42, the pressure attaching and shrinking patch 43 and the pressed attaching ring 44 are thermally expanded due to overlarge current or temperature influence in the later period, the pressure attaching and shrinking patch 43 slides outwards from the inner side of the retraction lock sleeve 42 due to expansion, and the distance between the retraction lock sleeve 42 and the bottom connecting and aligning patch 45 is increased, so that the contact surface between the retraction lock sleeve 42 and the bottom connecting and aligning patch 45 is reduced, the pressing movable limiting part 431 is in a fixed connection relation with the pressure attaching and shrinking patch 43, and the pressing movable limiting part 431 generates synchronous position change along with the sliding of the pressure attaching and shrinking patch 43 to the outer side of the retraction lock sleeve 42, the stitching movable limiting part 431 is no longer in a position overlapping state with the resetting monitoring identification unit 421, the connecting piece 432 installed on the stitching movable limiting part 431 is no longer extruded to the non-self-locking switch 4211 in the resetting monitoring identification unit 421 due to the position overlapping, the non-self-locking switch 4211 is closed, at the moment, the lamp bead 4212 is powered off along with the closing of the non-self-locking switch 4211, and the buzzer 4213 in the resetting monitoring identification unit 421 achieves the on-off state by receiving the power-on and power-off signals of the non-self-locking switch 4211, therefore, after the buzzer 4213 receives the power-off signals of the non-self-locking switch 4211, a buzzer alarm is given, so that an inspector is prompted by the buzzer alarm, after unstable attaching information of the current connector and the copper bar connecting piece 51 is obtained, the inspector can obtain the condition quickly, the connector and the copper bar connecting piece 51 can be reached to be restored in time, and the potential safety hazards can be further reduced.

In this embodiment, the later stage is patrolling and examining the in-process, if produce the skew because of the electric current is too big between income lock sleeve 42 and the pressure laminating shrink paster 43, cause income lock sleeve 42 and pressure laminating shrink paster 43 to produce the inflation because of the electric current influence and influence the electrical property and switch on the contact surface, make pressfitting activity restriction 431 position no longer with reset control identification element 421 partial overlap back, the personnel's accessible of patrolling and examining resets control identification element 421 and triggers virtual state warning that connects, make the production that the personnel of patrolling and examining obtained this condition fast can revise this part more in time, and then play the effect that reduces the potential safety hazard.

A pressing positioning concave strip 131 for providing an extrusion operation surface when the cable is pressed and limited is embedded in the inner side of the butt-joint embedding end 13; after the cable connector end enters the inner side of the butt-joint embedded end head 13, an operator places the cable connector end into the position of the pressing positioning concave strip 131 through a crimping pliers to press the skin part of the cable connector end, so that the exposed core part of the cable is always attached to the inner side of the butt-joint embedded end head 13 and the first attaching copper guide sheet 31.

The using method of the invention comprises the following steps: when the cable terminal and the copper bar connecting piece 51 are installed, firstly, the wire inlet locking part 14 is sleeved outside the cable connector part, then the stripping end is placed into the casing 12 and the cable outer casing 11 to complete screwing installation through thread adaptation, at the moment, the cable skin and the cable core part are both positioned at the position of the middle butt joint embedding end 13 of the stripping end placed into the inner side of the casing 12, then the press-fit positioning concave strip 131 is extruded through a wire pressing pliers to complete press-fit limit on the cable connector part, then the butt joint embedding end 13 and the gradual change curved assembly cavity 22 are mutually inserted and connected, so that the first attaching copper guide sheet 31 and the second attaching copper guide sheet 32 are mutually contacted, electric conduction between the cable connector and the connecting terminal connecting component 2 is realized, after the above operations are completed, the copper bar connecting piece 51 passes through the bottom connection aligning paster 45 and is inserted into the position of the locking sleeve 42, after the retractable lock sleeve 42 is screwed with the copper bar connecting piece 51, the copper bar connecting piece 51 enters the inner side of the through connecting end seat 23 under the action of the screw thread of the retractable lock sleeve 42, at the moment, the bottom connecting alignment patch 45 is contacted with the surface of the copper bar 5, the pressure fitting shrinkage patch 43 is contacted with the surface of the copper bar 5 at the bottom connecting alignment patch 45 and slides to the inner side position of the retractable lock sleeve 42, at the moment, the pressure applying ring 44 between the retractable lock sleeve 42 and the bottom connecting alignment patch 45 is extruded to be in a flat state after the distance between the retractable lock sleeve 42 and the bottom connecting alignment patch 45 is reduced, and further, the contact friction force between the retractable lock sleeve 42 and the bottom connecting alignment patch 45 is increased until the pressing movable limiting part 431 fixedly connected with the pressure applying shrinkage patch 43 slides along the contact position observation cavity 422 to the inner side of the retractable lock sleeve 42 along with the pressure applying shrinkage patch 43, when the position of the pressing movable limiting part 431 is overlapped with the position of the resetting monitoring identification unit 421, namely, the bottom of the retractable lock sleeve 42 is fully attached to the bottom connection alignment patch 45, meanwhile, the pressing attachment ring 44 is pressed in place, so that the pressing connection firmness of the position of the pressing attachment ring 51 is kept, the contact resistance of the connected cable terminal and the copper bar connecting piece 51 is reduced, when the bottom connection alignment patch 45 is attached to the retractable lock sleeve 42 after installation, an operator observes whether the position of the resetting monitoring identification unit 421 is overlapped with the position of the pressing movable limiting part 431 after installation, after the position of the pressing movable limiting part 431 is overlapped with the position of the resetting monitoring identification unit 421, a contact sheet 432 installed on the pressing movable limiting part 431 is contacted with a non-self-locking switch 4211 in the resetting monitoring identification unit 421, so that the non-self-locking switch 4211 in the resetting monitoring identification unit 421 does not have the self-locking switch 4212 because the pressing connection sheet 432 is extruded by the pressing movable limiting part 431, the operator can judge whether the bottom connection alignment patch 45 is attached to the bottom connection alignment patch 45 when the lamp bead is not lighted, and the operation personnel can judge that the lamp bead is not attached to the bottom connection alignment patch 45.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cable terminal connecting device comprises a wire end joint member (1), a connecting terminal joint member (2) and a conducting patch group (3), wherein the wire end joint member (1) consists of a cable outer sleeve joint shell (11) and a stripping end embedding casing (12), the cable outer sleeve joint shell (11) is in threaded connection with the stripping end embedding casing (12), the cable terminal end embedding casing (12) is fixedly connected with a butt joint embedding end head (13), the butt joint embedding end head (13) is used for inserting the inner side of the connecting terminal joint member (2) for butt joint installation after the cable joint end is embedded into the inner side, the cable outer sleeve joint shell (11) is fixedly connected with a wire inlet locking part (14), the wire inlet locking part (14) is sleeved outside the cable joint end and used for anti-slip limitation after the butt joint end is embedded into the inner side of the butt joint embedding end head (13), and the connecting terminal butt joint member (4) is installed at the bottom end of the connecting terminal joint member (2);

the connection terminal joint component (2) comprises an insulation protection casing (21) and a through connection end seat (23), the insulation protection casing (21) is fixedly connected with the through connection end seat (23), one end of the butt joint embedding end head (13) is clamped and connected to the inner side of the insulation protection casing (21), and a gradual change curved assembly cavity (22) matched with the butt joint embedding end head (13) is formed in the inner side of the insulation protection casing (21);

the connection terminal butt joint component (4) comprises a bottom through contact patch (41), a receiving lock sleeve (42), a pressure fit contraction patch (43), a pressed attachment ring (44) and a bottom connection alignment patch (45), wherein the bottom through contact patch (41) is fixedly connected to the bottom of the insulation protection casing (21) and used for electrically communicating the through connection end seat (23) with the receiving lock sleeve (42), the receiving lock sleeve (42) is fixedly connected to the bottom of the bottom through contact patch (41), the pressure fit contraction patch (43) is in sliding connection with the receiving lock sleeve (42), the pressed attachment ring (44) is sleeved on the outer side of the pressure fit contraction patch (43), the bottom connection alignment patch (45) is fixedly connected to the bottom of the pressure fit contraction patch (43), and when the receiving lock sleeve (42) is in threaded connection with the copper bar connecting piece (51), the contraction degree of the bottom connection alignment patch (45) towards the inner side of the receiving lock sleeve (42) through the pressure fit contraction patch (43) is judged, and the joint state of the bottom connection alignment patch (45) with the copper bar connecting surface (5) is judged;

the conduction patch set (3) comprises a first bonding copper guide sheet (31) and a second bonding copper guide sheet (32), the first bonding copper guide sheet (31) is fixedly connected to the inner wall of the butt-joint embedding end (13), the second bonding copper guide sheet (32) is fixedly connected to the inner wall of the insulation protection casing (21), and after the insulation protection casing (21) and the butt-joint embedding end (13) are mutually clamped, the electric conduction between the cable terminal and the through connection end seat (23) is realized through the first bonding copper guide sheet (31) and the second bonding copper guide sheet (32);

a reset monitoring identification unit (421) for prompting in-place contact is arranged on the surface wall of the retractable lock sleeve (42), a contact position observation cavity (422) is formed in the retractable lock sleeve (42), a pressing movable limiting part (431) which longitudinally slides along the inner side of the contact position observation cavity (422) is fixedly connected to the inner side of the pressure fitting shrinkage patch (43), and the bottom connecting alignment patch (45) is fitted in place with the connecting surface of the copper bar (5) after the pressing movable limiting part (431) is overlapped and aligned with the reset monitoring identification unit (421); and a pressing and positioning concave strip (131) used for providing an extrusion operation surface when the cables are pressed and limited is embedded in the inner side of the butt joint embedding end head (13).

2. A cable termination connection device according to claim 1, characterized in that: the inner side of the receiving lock sleeve (42) is provided with an internal thread connecting groove (423) which is screwed with the copper bar connecting piece (51), and after the receiving lock sleeve (42) is fixed with the copper bar connecting piece (51) through the internal thread connecting groove (423), the pressed attaching ring (44) is compressed by the extrusion force of the receiving lock sleeve (42) to increase the contact surface and the friction force between the receiving lock sleeve (42) and the bottom connection alignment patch (45).

3. A cable termination connection arrangement according to claim 1, characterised in that: the reset monitoring identification unit (421) comprises a non-self-locking switch (4211), a lamp bead (4212) and a buzzer (4213), the non-self-locking switch (4211), the lamp bead (4212) and the buzzer (4213) are fixedly connected to the outer wall of the retractable lock sleeve (42), and the outer wall of the press-fit movable limiting part (431) is fixedly connected with a connecting piece (432).

4. A method of using a cable termination connection device, using any one of the cable termination connection devices of claims 1-3, comprising the steps of:

s1, firstly sleeving a wire inlet locking part (14) on the outer side of a cable joint, screwing and installing a stripping end into a casing (12) and a cable outer sleeve connecting shell (11), enabling a cable skin and a cable core to be located at the position of a butt joint embedded end (13) in the inner side of the stripping end inserted casing (12), extruding a press-fit positioning concave strip (131) part through a wire pressing pliers to realize press-fit limiting on a cable, and then mutually inserting a butt joint embedded end (13) and a gradual change curved assembly cavity (22) to enable a first attaching copper guide sheet (31) and a second attaching copper guide sheet (32) to be mutually contacted to finish electric conduction between the cable and a connecting terminal connecting component (2);

s2, after the assembly of the wire end joint member (1) and the connection terminal joint member (2), inserting the copper bar connecting piece (51) into the position of the receiving lock sleeve (42) through the bottom connection alignment patch (45), screwing the copper bar connecting piece (51) and the receiving lock sleeve (42) to enable the copper bar connecting piece (51) to enter the inner side of the through connection end seat (23), enabling the bottom connection alignment patch (45) to be in contact with the surface of the copper bar (5), enabling the pressure fit shrinkage patch (43) to slide towards the inner side of the receiving lock sleeve (42), enabling the top surface of the pressed attachment ring (44) to be in contact with the receiving lock sleeve (42) after the receiving lock sleeve (42) retracts towards the inner side of the pressure fit shrinkage patch (43), enabling the bottom surface of the pressed attachment ring (44) to be in contact with the bottom connection alignment patch (45) after the receiving lock sleeve (42) and the pressure fit shrinkage patch (43), further increasing the contact between the lock sleeve (42) and the bottom connection alignment patch (45), enabling the top surface of the pressed attachment ring (44) to be in contact with the receiving lock sleeve (42) until the movable contact of the movable attachment ring (42) is in contact with the bottom connection loop (421, and the movable contact monitoring unit (421), and the reset state after the movable contact of the pressed attachment ring (421) is detected, and the movable contact of the pressed attachment ring (42), thereby keeping the firm compression joint with the contact position of the copper bar connecting piece (51) and reducing the contact resistance of the connected cable terminal and the copper bar contact.