阅读说明：本技术 一种旋进破皮接线夹 (Precession broken skin binding clip ) 是由 冯跃亮 刘惺惺 张凯俊 畅伟 潘建乔 傅晓平 李南 吴昱德 葛俊杰 朱赟 郭松 于 2020-05-21 设计创作，主要内容包括：本发明涉及支线接线夹技术领域,具体涉及一种旋进破皮接线夹,包括上夹块、下夹块和破皮螺钉,上夹块和下夹块贴合时形成用于容纳导线的穿线孔,导线基本被固定在穿线孔内,破皮螺钉沿穿线孔径向拧入上夹块,破皮螺钉的尾部为平端面,破皮螺钉尾部加工有槽,随着破皮螺钉的拧入,破皮螺钉的尾部破开导线绝缘皮并与导线芯接触,破皮螺钉为导体,破皮螺钉与导线芯接触后与支线连接。本发明的实质性效果是：提高了接线夹与导线芯的接触面积,提高了接线夹的导电性,降低了对导线芯表层的损坏,对导线芯的导电性影响小。(The invention relates to the technical field of branch wire clamps, in particular to a screw-in and skin-breaking wire clamp which comprises an upper clamping block, a lower clamping block and a skin-breaking screw, wherein a threading hole for accommodating a wire is formed when the upper clamping block and the lower clamping block are attached, the wire is basically fixed in the threading hole, the skin-breaking screw is screwed into the upper clamping block along the radial direction of the threading hole, the tail part of the skin-breaking screw is a flat end surface, a groove is formed in the tail part of the skin-breaking screw, the tail part of the skin-breaking screw breaks an insulating skin of the wire and is in contact with a wire core along with the screwing-in of the skin-breaking screw, the skin-breaking screw is a conductor, and the skin-. The substantial effects of the invention are as follows: the contact area of the jointing clamp and the conductor core is increased, the conductivity of the jointing clamp is improved, the damage to the surface layer of the conductor core is reduced, and the influence on the conductivity of the conductor core is small.)

1. A screw-in peel-breaking jointing clamp for jointing branch line on the conducting wire with insulating peel is characterized in that,

the wire guide device comprises an upper clamping block, a lower clamping block and a skin breaking screw, wherein a threading hole used for accommodating a wire is formed when the upper clamping block and the lower clamping block are attached, the wire is basically fixed in the threading hole, the skin breaking screw is screwed into the upper clamping block along the radial direction of the threading hole, the tail part of the skin breaking screw is a flat end surface, the tail part of the skin breaking screw is provided with a groove, the tail part of the skin breaking screw breaks an insulating skin of the wire and is in contact with a wire core along with the screwing-in of the skin breaking screw, the skin breaking screw is a conductor, and the skin breaking screw is connected with a branch line after being in contact with the.

2. A precession peel clamp according to claim 1,

the tail part of the skin breaking screw is provided with a straight groove or a cross groove.

3. A precession peel clamp according to claim 1,

the tail part of the skin breaking screw is provided with a straight groove.

4. A screw-in peel-breaking binding clip according to claim 3,

in the screwing-in process of the skin breaking screw, when the tail part of the skin breaking screw is firstly contacted with the insulating skin, the extending direction of the straight groove at the tail part of the skin breaking screw is basically parallel to the extending direction of the threading hole.

5. A precession peel clamp according to claim 1 or 2 or 3 or 4,

the hardness of the head of the skin breaking screw is less than that of the lead core.

6. A precession peel clamp according to claim 1 or 2 or 3 or 4,

the head of the skin breaking screw is an insulator, and the rest part of the skin breaking screw is a conductor.

7. A precession peel clamp according to claim 1 or 2 or 3 or 4,

and the middle part of the skin breaking screw is provided with a wiring part with a smooth outer surface.

8. A precession peel clamp according to claim 7,

still include the conducting block, the smooth contact surface and the conducting block butt of broken skin screw middle part processing, the conducting block is inlayed on last clamp splice, the clamp splice is worn out to the conducting block.

9. A precession peel clamp according to claim 1 or 2 or 3 or 4,

still include a plurality of fastening screw, it has a plurality of through-holes that are used for passing fastening screw to go up clamp splice processing, clamp splice processing down have quantity and position with the blind hole that the through-hole corresponds, the blind hole processing has the internal thread, fastening screw pass on behind the clamp splice with clamp splice threaded connection down, placed the elastic gasket between fastening screw and the last clamp splice.

10. A precession peel clamp according to claim 4,

when the skin breaking screw is screwed in, the extending direction of the straight groove at the tail part of the skin breaking screw is basically vertical to the extending direction of the threading hole.

Technical Field

The invention relates to the technical field of branch wire clamps, in particular to a precession skin-breaking wire clamp.

Background

Distribution lines typically use insulated cables for the distribution of electrical power. Due to the change of user distribution and load in the distribution network, the distribution network is subject to line upgrading and reconstruction. Distribution equipment in a distribution network typically has a designed age and requires replacement, such as meter replacement, after the age has been reached. In the past, when a branch line is connected or a meter is replaced, the power-off operation is needed. The puncture fastener can connect the branch line with electricity, and the very big upgrading of having made things convenient for the distribution network on a small scale is reformed transform in the construction. Make a large amount of constructions that need the outage to go on, can both design and accomplish the construction scheme under the uninterrupted power with the help of the puncture fastener. However, the puncture wire clamp has the following defects: (1) the puncture wire clamp and the lead core are in point contact, so that the shunting capacity is poor; (2) in actual use, the prick of the puncture clamp can not be perfectly aligned with the wire core, so that part of the prick penetrates into the wire core, and the other part of the prick is not contacted with the wire core. There is a need for improved wire clips to increase their electrical conductivity.

Chinese patent CN106099403B, published 2018, 5 month, 22 month, a cable insulation piercing connector, which is composed of a connector fixing component, a connector moving component and a locking component; the wire clamping and fixing assembly comprises an insulating main body provided with a square groove, cable grooves are formed in two side walls of the square groove, a metal guide wire is pre-embedded in the insulating main body, and two puncture tips of the metal guide wire extend into the two cable grooves; the wire clamping and moving assembly comprises two wire pressing blocks placed in the square groove, and wire pressing grooves which are parallel to and symmetrical to the corresponding cable grooves are respectively arranged on the outer sides of the two wire pressing blocks; the locking assembly is composed of a locking rod, a threaded sleeve and a buffer sleeve, the distance between the two wire pressing blocks can be adjusted, so that the main cable and the branch cable are respectively pressed in two cable grooves of the wire clamping and fixing assembly, and each metal guide wire penetrates through the insulating layer by means of the puncture tips at the two ends to conduct the main cable and the branch cable. Which increases the number of piercing tips and provides flexibility in the connection between the piercing tips and the metal conductor, improving contact stability. However, the electrical connection of the technical scheme is still point contact, and the electric conduction capability still needs to be improved.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the current jointing clamp has the technical problem of poor conductivity. The precession broken skin binding clip is proposed, and this binding clip can form the face contact, improves the electric conductivity of binding clip by a wide margin.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a precession broken skin binding clip for contact branch line on wire with insulating skin, includes clamp splice, lower clamp splice and broken skin screw, form the through wires hole that is used for holding the wire when going up clamp splice and clamp splice laminating down, the wire is fixed basically in the through wires hole, broken skin screw radially twists upper clamp splice along the through wires hole, the afterbody of broken skin screw is the plain end face, broken skin screw afterbody processing is slotted, and along with the twist of broken skin screw, the afterbody of broken skin screw breaks the wire insulating skin and contacts with the wire core, broken skin screw is the conductor, and broken skin screw is connected with the branch line after contacting with the wire core. The convex skin breaking screw tail can improve the skin breaking effect, but can lead to final and conductor core contact surface to reduce by a wide margin, and the area with the conductor core contact surface can be improved to the skin breaking screw tail of concave yield, but can lead to the skin breaking difficulty, probably can't accomplish the breaking of insulating skin. The principle of this technical scheme brokenly the skin is when broken skin screw is twisted in, at first causes the extrusion to insulating skin, and the groove of opening simultaneously makes during the partial insulating skin card goes into the groove, brokenly the skin screw and continues to rotate, and the insulating skin in the card goes into the groove forms along with rotatory: (1) the insulation skin in the clamping groove tears the insulation skin around to form a crevasse, (2) the smooth tail end face of the skin-breaking screw pushes the insulation skin with the crevasse to make the insulation skin deform and retreat to the periphery, so that the crevasse is enlarged, and finally the insulation skin crevasse with few chips and large crevasse is formed. Broken skin screw and wire core butt back carry out a small amount of precession again, make broken skin screw afterbody and wire core all take place a small amount of deformations, make the line contact enlarge into the face contact, promote the conducting capacity of binding clip by a wide margin. The tail part of the skin breaking screw is mainly a flat surface, so that the deformation of the wire core is the integral flattening, the surface layer of the wire core cannot be cut and cut, and the conductivity of the wire core is not greatly influenced by a small amount of deformation under the condition that the surface layer of the metal conductor is not cut and cut. The pushed-away insulating skin is gathered around the tail part of the skin breaking screw to form the enclosure of the tail part of the skin breaking screw, the elasticity of the insulating skin can extrude the tail part of the skin breaking screw, and the insulativity of the joint is improved.

Preferably, the tail part of the skin breaking screw is provided with a straight groove or a cross groove. The straight groove or the cross groove is easy to process at the tail part of the skin breaking screw, and the shape of the groove can be better ensured to be processed.

Preferably, the tail part of the skin breaking screw is provided with a straight groove. The straight groove is simple to process, and has smaller damage to the wire core and larger contact surface.

Preferably, in the screwing-in process of the skin breaking screw, when the tail part of the skin breaking screw is firstly contacted with the insulating skin, the extending direction of the straight groove at the tail part of the skin breaking screw is basically parallel to the extending direction of the threading hole. More insulating skins can be clamped in, and the skin breaking effect is improved.

Preferably, the head of the skin breaking screw has a hardness smaller than that of the wire core. The tail of the skin breaking screw is made of softer material than the wire core, and more deformation occurs at the tail of the skin breaking screw.

Preferably, the head of the skin breaking screw is an insulator, and the rest part of the skin breaking screw is a conductor. The safety of the jointing clamp is improved.

Preferably, the central portion is formed with a wire connecting portion having a smooth outer surface. So as to lead out the branch line conveniently and connect the branch line conveniently.

Preferably, the conductive block is further included, the smooth contact outer surface processed in the middle of the skin breaking screw is abutted to the conductive block, the conductive block is embedded on the upper clamping block, and the conductive block penetrates out of the upper clamping block. The connection reliability of the branch line and the skin breaking screw is improved, and the conductivity is further improved.

Preferably, the clamping device further comprises a plurality of fastening screws, the upper clamping block is provided with a plurality of through holes for allowing the fastening screws to pass through, the lower clamping block is provided with blind holes corresponding to the through holes in number and position, internal threads are formed in the blind holes, the fastening screws penetrate through the upper clamping block and then are in threaded connection with the lower clamping block, and elastic gaskets are placed between the fastening screws and the upper clamping block. The elastic gasket can prevent the upper clamping block and the lower clamping block from loosening, and the safety of the wiring clamp is ensured when the wiring clamp is used for a long time.

Preferably, when the threading of the skin breaking screw is completed, the extending direction of the straight groove at the tail part of the skin breaking screw is basically vertical to the extending direction of the threading hole. The contact area between the tail of the skin breaking screw and the lead core can be increased.

Preferably, the thread pitch of the skin breaking screw is slightly smaller than the thickness of the insulating skin. After the peeling screw rotates for one circle, the straight groove is basically parallel to the extending direction of the conductor core, the rotary peeling screw can scrape the conductor core, but under the preferred scheme, a small amount of insulation skin still exists between the straight groove and the conductor core, the peeling screw continues to rotate at the moment, the straight groove direction is staggered with the direction of the conductor core, and when the straight groove and the conductor core are contacted and continue to produce extrusion at the moment, the scraping to the conductor is minimum.

The substantial effects of the invention are as follows: the contact area of the jointing clamp and the conductor core is increased, the conductivity of the jointing clamp is improved, the damage to the surface layer of the conductor core is reduced, and the influence on the conductivity of the conductor core is small. When the insulation cover is broken, few insulation cover fragments are generated, most of the broken insulation cover is accommodated in the straight groove, and the clamping, sealing and the like of the wiring clamp are influenced negligibly by the fragments.

Drawings

Fig. 1 is a schematic view of a structure of a wire clamp according to an embodiment.

Fig. 2 is a schematic cross-sectional view of a clip according to an embodiment.

Fig. 3 is a schematic cross-sectional view of a skin-breaking screw according to an embodiment.

Fig. 4 is a schematic structural view of a skin-breaking screw according to an embodiment.

Fig. 5 is a schematic structural view of a second peel breaking screw according to an embodiment.

FIG. 6 is a schematic diagram illustrating a peeling effect according to an embodiment.

FIG. 7 is a diagram illustrating the effect of a pair of wire cores according to an embodiment.

Wherein: 1. the wire harness comprises a lower clamping block, 2, an upper clamping block, 3, a fastening screw, 4, a skin breaking screw, 5, a lead head, 6, a wire core, 7, an insulating skin, 8, an elastic gasket, 9, a threading hole, 10, a conductive block, 401, a head, 402, a wiring part, 403, a threaded part, 404, a tail, 4-1, two blades, 4-2, a cross groove, 4-3 and four blades.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.