CN2520574Y

CN2520574Y - Electric cable intermediate connector

Info

Publication number: CN2520574Y
Application number: CN 01269898
Authority: CN
Inventors: 张建华
Original assignee: ZHEJIANG JIULI FIRE-RESISTANT CABLE Co Ltd
Current assignee: ZHEJIANG JIULI FIRE-RESISTANT CABLE Co Ltd
Priority date: 2001-12-31
Filing date: 2001-12-31
Publication date: 2002-11-13
Anticipated expiration: 2011-12-31

Abstract

The utility model relates to a connector between cables, which comprises a main body (3). Hollow frustum type cavities (14) (16) are arranged on the two ends of the main body. Movable taper sleeves (7) which take shapes of frustum are equipped in the frustum type cavities (14) (16). Penetrating slits (19) are opened on the side wall of the cavities, which are penetrated from the top face of the frustum (22) to the bottom face of the frustum (20). The two ends of the movable taper sleeves are provided with ports, and the port on the bottom of the frustum is used to penetrate cables. Connecting threads (17) (18) are produced on the external surface of the two ends of the main body used for screwing with tightening female screws (2) (4). After cables are inserted in the two ports of the main body (3), the tightening female screws (2) (4) are rotated tightly, thereby finishing the task. The utility model has the advantages of convenient connection, even compression around the cavities, reliable conductivity, and favorable evenness.

Description

The cable intermediate connector

Technical field

The utility model relates to a kind of middle jockey of lv power cable conductor wire core.It has, and connection is reliable, simple to operate, contact resistance is little, reusable characteristics.Belong to a kind of spiral and press-fit the type termination.

Background technology

Existing power cable conduction core intermediate connector is hydraulic tongs compression joint type intermediate connector (claiming the compression joint type intermediate connection tube again), as shown in Figure 8.During connection, the

endoporus

32 and 34 of the power cable conductor wire core 31 of butt joint and 35 splicing ear 33 in the middle of insert respectively at two ends, then at the position of

endoporus

32 and 34, adopt hydraulic tongs confined pressure mode, i.e. special die by hydraulic tongs, under the effect of hydraulic coupling P, make crimping position, two ends (endoporus 32 of splicing ear 33 and 34 peripheral position the promptly) compression of intermediate connector 33, thereby two terminations and the middle splicing ear of conductor wire core of the power cable of mutual butt joint linked together.

In electrical power transmission system, can reach the middle purpose of connecting of power cable conductor wire core though use spiral to press-fit the type intermediate connector, but because its connection needs hydraulic tongs to finish, and different conductor wire core cross sections, need to adopt different pressing molds, the special process device is more, complex procedures, installation trouble, operating efficiency are lower.Secondly, adopt spiral to press-fit the type intermediate connector, after particularly the sub-thread conductor wire core connects, because connector (terminal and lead) material is different with the cable conduction core, and difference on the physical property appears, contact performance between the connector is not fine, can produce bigger contact resistance at connecting portion, and heating obviously during energising, and after using a period of time, be easy to generate at connecting portion and get loose, cause that more contact resistance increases, and reduces the electric property of power circuit.

Summary of the invention

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of cable intermediate connector, it includes connector body, its two ends have screw thread to be used for being spirally connected with nut, in the process that is spirally connected, will insert the cable end fixation in it, described main body inner chamber all connects along axis direction, but the inner chamber that has the current supply cable connector to insert in two terminations of described main body.Described inner chamber is the hollow taper type, its bore sharp direction inwardly, the awl end outside.Be furnished with movable tapered sleeve in described inner chamber, it is shaped as taper type, and all smooth mouthful of frustum bottom surface and frustum end face have the saturating seam that runs through from frustum end face to frustum bottom surface on the side of described tapered sleeve.About the multiple scheme that offers of the saturating seam on the described movable tapered sleeve side, below in the description of each embodiment, be described individually.Described movable tapered sleeve self also has two kinds of different schemes, and a kind of is the movable tapered sleeve of integral type taper type of the saturating seam of band (can head straight for, also can tiltedly open); Another kind is the movable tapered sleeve of multi-clove type, it watt is put together by two or three awl, its frustum is closely bored on the conical surface of bottom and is offered the circumference wire casing, and flexible line embeds will bore in the circumference wire casing watt flexibly that bundle is integral, and vertex of a cone place can be the shape of freely blooming and openning is opened the cable of powering pass through.Its medial extremity plane also promotes described movable tapered sleeve simultaneously and forces its central authorities' motion to main body in its motion process when fastening screw nut is screwed, because the effect of the inner conical surface in main body two ends forces the portion of dehiscing of blooming of movable tapered sleeve to be tightened up gradually, its aperture constantly dwindles, like this, the cable that inserts being connected the termination constantly is subjected to radial pressure all around and is good crimped status.

Compared with prior art, advantage of the present utility model is: the cable intermediate connector is simple, easy to operate, only with simple tool one spanner, can realize that cable is connected with the tight of binding post, firm and reliable connection, since around evenly tighten up, contact resistance reduces, and is big with the lead contact area, and contact resistance is reduced.Also have product of the present utility model reusable, destructive distortion can not occur, can repeatedly use.

Description of drawings

Fig. 1 is first embodiment of cable intermediate connector of the present utility model;

Fig. 2 is the assembling of Fig. 1 cable intermediate connector state that finishes, and the nut at two is screwed;

Fig. 3 is vertical cut-away view of the main part of Fig. 1 embodiment;

Fig. 4 is the external view of Fig. 1 embodiment main part;

Fig. 5 is the stereogram of the movable tapered sleeve of Fig. 1 embodiment;

Fig. 6 is the movable tapered sleeve stereogram of single vertical masonry joint of second embodiment of the utility model cable intermediate connector;

Fig. 7 is the movable tapered sleeve stereogram of monocline seam of the 3rd embodiment of the utility model cable intermediate connector;

Fig. 8 is the crimp type cable intermediate connector of contrast with the reflection prior art.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1 is first embodiment shown in Figure 4, cable intermediate connector of the present utility model, the fastening screw nut 2 that it includes main body 3 and is spirally connected mutually with main body, processed connecting thread 17,18 on the outer surface of two terminations of described main body, but the cavity 14,16 that two terminations of described main body have the current supply cable connector to insert.Described cavity 5 is hollow taper types, its awl point inwardly and the vertex of a cone outside, in described cavity, dispose movable tapered sleeve 7.Described movable tapered sleeve 7 also is taper type, and its frustum end face 22 and frustum bottom surface 20 are smooth mouthful, have the saturating seam 19 that runs through from its frustum end face to frustum bottom surface on the conical surface (side) of described movable tapered sleeve.Described seam 19 provides the leeway that radially can expand when inserting in it for the cable intermediate connector.Described being sewn in the present embodiment is three.The movable tapered sleeve 7 of present embodiment is watt to be put together by the awl of three equalizations, it is near the loop wire groove 21 of a processed indent on the conical surface at frustum top, in described loop wire groove 21, be embedded with elastica 6 and be used for three awls watts 23 flexibly are bundled into one, and its frustum end face place can opening.Described elastica 6 adopts " C " font Elastic Steel silk thread.Fastening screw nut that described and main body 3 are spirally connected mutually 2 it have an awl watt big end surface 10 that is used to promote described movable tapered sleeve 7 to make axially movable transverse plane 9, and it also is useful on the internal thread 11 that is spirally connected mutually with main body 3 two ends certainly.There is one section cylindrical duct 15 (see figure 3) in central authorities in described main body 3, hold in it for the cable link that inserts.On described main body 3 central walls, got out the cable connection termination that a small sircle hole 13 is used to observe main body inner chamber 15.

The second embodiment scheme of the present utility model following (seeing Fig. 1 and Fig. 6), its main body 3 parts are all identical with first embodiment with attaching nut's 2 parts, the place of existing difference is the tapered sleeve of its movable tapered sleeve 24 for the saturating seam 27 of integral type band, owing to be integral type, therefore also just need on the awl wall of nearly awl bottom, not offer the loop wire groove 21 of indent, also not need elastica 6.Described seam 27 is to offer along the cone element direction of movable tapered sleeve 24.

The 3rd embodiment scheme of the present utility model following (seeing Fig. 1 and Fig. 7), its main body 3 parts, attaching nut's 2 parts are all identical with first embodiment, existing difference be the saturating seam 30 of its movable tapered sleeve 28 be along with the cone element saturating seam 30 offered of oblique direction mutually.

Claims

1. cable intermediate connector, it includes connector body (3), its two ends have screw socket (17), (18) to be respectively applied for and nut (2), (4) are spirally connected, the main body inner chamber all connects along axis direction, but the cavity (14), (16) that have the current supply cable connector to insert in two terminations of described main body is characterized in that:

A. described cavity is the hollow taper type;

B. is furnished with movable tapered sleeve in the described cavity, be with on its side conical surface and crack, its frustum end face and frustum bottom surface are smooth mouthful, and described cracking is the saturating seam (19) that the end face (22) from frustum connects to frustum bottom surface (20), the smooth mouthful of socket (25) that end inserts as cable joint in the awl end;

C. the cone-shaped cavity (14) on the described main body (3), (16) are to be the awl point to bore end layout outside inwardly.

2. cable intermediate connector as claimed in claim 1 is characterized in that: cracking on the side conical surface of described movable tapered sleeve (7) be along its bus leave from the vertex of a cone (22) to boring at the end the saturating seam (19) that (20) connect.

3. cable intermediate connector as claimed in claim 1 or 2 is characterized in that: cracking on described movable tapered sleeve (7) side is along the saturating seam of leaving with the direction of its bus oblique (19).

4. cable intermediate connector as claimed in claim 1 or 2 is characterized in that: described movable tapered sleeve (7) is the tapered sleeve (7) that has two or more saturating seams (19).

5. as claim 1 or 4 described cable intermediate connectors, it is characterized in that: described movable tapered sleeve (7) is to be pieced together by polylith awl watt (23) to do to form, have annulus wire casing (21) on the side at its nearly awl end, groove is embedded with elastic thread (6) in order to locating cone watt (23).

6. cable intermediate connector as claimed in claim 5 is characterized in that: described elastic thread (6) is the metallic elastic circle of " C " shape.

7. cable intermediate connector as claimed in claim 5 is characterized in that: described locking nut has the axially extending bore (12) that a current supply cable passes, processed internal thread (11) on its inwall.

8. cable intermediate connector as claimed in claim 5 is characterized in that: described main body (3) central authorities are a columned duct (15), are provided with to look the open-work (13) that inside cable the end of a thread connects situation for seeing on the main wall of described central part.

9. as claim 1 or 2 or 6 or 7 or 8 described cable intermediate connectors, it is characterized in that: a side of described fastening screw nut (2), (4) is useful on the frustum bottom surface (10) that promotes described movable tapered sleeve (7) and makes axially movable transverse plane (9).