CN108493632A - A kind of round wires conducting wire locking connector and attaching method thereof - Google Patents
A kind of round wires conducting wire locking connector and attaching method thereof Download PDFInfo
- Publication number
- CN108493632A CN108493632A CN201810556242.7A CN201810556242A CN108493632A CN 108493632 A CN108493632 A CN 108493632A CN 201810556242 A CN201810556242 A CN 201810556242A CN 108493632 A CN108493632 A CN 108493632A
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- Prior art keywords
- locking
- connector
- conducting wire
- tube
- thread
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/60—Connections between or with tubular conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The invention discloses a kind of round wires conducting wire locking connectors and attaching method thereof, including conductive connector and locking nut, connector one end is provided with threaded shank, the end set of threaded shank has locking tube, locking nut outer end endoporus is provided with fastening cones section, locking tube is provided with U-shaped opening, and locking nut is connected in threaded shank, and fastening cones section is extruded in locking tube.The round wires conductor jointer that the present invention is constituted using locking nut, connector, threaded shank, the locking tube of opening and fastening cones section, wire connections local plastic deformation can be realized to conductor engagement contact, increase contact surface product, reduce contact resistance, the fastening cones section of opening is in elastic range simultaneously, by self compensation, realization connector is not in that gap loosens oxidation in cold cycling rear joint conductor contact surface, improves the connection reliability of connector.
Description
Technical field
The invention belongs to electrical power wiring equipment technical fields, and in particular to a kind of round wires conducting wire locking connector and its connection
Method.
Background technology
In previous round wires conducting wire connection, usually using conducting wire bolt crimp connector connection, this connector construction
Simply, it is easily installed, it is of less demanding to operator quality.
As shown in figs. 9-11, the connector of conducting wire bolt crimp connector and bolt are generally process by Stainless Steel, are led
Line connecting hole transverse direction thread mill drilling, hold-down bolt are mounted in lateral threaded holes, and conducting wire wears round conductor conductor when connecting
Enter connector wire connection hole, fastening bolt makes bolt end, connector, wire connection hole inner wall be pressed together.
Although the conducting wire connection of conducting wire bolt crimp connector is simple, it is easy to implement, due to connector material and conducting wire
Material is different, leads connector and all produces serious yield deformation after mounting, and the contact area of conducting wire and connector is small, and
And the difference of linear expansion of conductor jointer and conducting wire is bigger, after the operation of long period, by multiple cold and hot
It recycles, continues to be plastically deformed at conducting wire bolt crimping, generate gap and loosen, air etc., which enters, makes connector electrolysis oxygen
Change, makes to lead the increase of connector contact resistance, fever failure.
Invention content
Present invention solves the technical problem that being：A kind of round wires conducting wire locking connector and attaching method thereof is provided, to solve
Above-mentioned problems of the prior art.
The technical solution that the present invention takes is：A kind of round wires conducting wire locking connector, including conductive connector and locking
Nut, connector one end are provided with threaded shank, and the end set of threaded shank has locking tube, locking nut outer end endoporus to be provided with lock
Tight cone segments, locking tube are provided with U-shaped opening, and locking nut is connected in threaded shank, and fastening cones section is extruded in locking tube.
Preferably, above-mentioned connector is set as square structure, flat type structure or polymorphic structure with respect to the threaded shank other end.
Preferably, above-mentioned locking tube is provided with cone guide section.
Preferably, above-mentioned metallic interconnection materials and connected round wires material identical.
A kind of connection method of round wires conducting wire locking connector, this method are：One section is reserved after round wire end is peeled off
Conductive metal section inner core, this section of conductive metal section length of inner core are less than locking tube bore depth, locking nut are inserted in round wire,
Conductive metal section inner core is inserted into locking tube, and locking nut screwed using torque spanner be connected in threaded shank and until
The locking tube elastic tight that fastening cones section squeezes opening fits on conductive metal section inner core.
The screw-down torque of above-mentioned locking nut locking locking tube calculates：
If the thread contact face between connector and locking nut is A1, the conical contact between connector and locking nut
Face is A2, and the calculation formula of available maximum static friction torque T1, T2 of contact surface A1, A2 is as follows；
In formula (1) and (2):
F---- is axial pre tightening force；
P---- is thread pitch；
μ1----be flank friction factor；
r1The half of ----be screw thread equivalent redius and the pitch diameter of thread；
β ----it is the 1/2 of form of thread angle；
μ2The friction factor of ----between connector and nut；
r2--- it is the friction equivalent redius of connector locking tube centrum and nut tap body contact zone domain；
α2----be the 1/2 of locking tube cone guide section cone angle；
The torque relationship of conducting wire locking type connector is
T=T1+T2 (3)
I.e. the torque of conducting wire locking type connector is with axial pre tightening force F relationships
Axial pre tightening force F：
In formula (5)：D---- round wire diameters；σsThe yield strength of ----round wire；
It can must screw-down torque T according to formula (4) and formula (5)：
The friction equivalent redius r of connector and fastening cones section (5) contact area2：
In formula (7), D1----be connector diameter of thread, same to d1；
D2The tight lock tube internal diameter of ----be；
D3----be tight lock tube centrum top outer diameter；
D4The tight lock tube outer diameter of ----be.
Cos β can use formula (8) to calculate：
In formula (8)：
P---- is thread pitch；
D---- is bolt thread outer diameter；
d1----be diameter of thread；
Beneficial effects of the present invention：Compared with prior art, effect of the invention is as follows：
(1) circle that the present invention is constituted using locking nut, connector, threaded shank, the locking tube of opening and fastening cones section
Wire connections local plastic deformation can be realized conductor engagement contact, increase contact surface product, drop by line conductor jointer
Low contact resistance, while the fastening cones section being open is in elastic range, by self compensation, realizes connector after cold cycling
Connector conductor contact surface is not in that gap loosens oxidation, improves the connection reliability of connector；
(2) it is crimped using cone guide section, crimping is more closer, and fitting is more preferable, is conductively connected reliability higher；
(3) metallic interconnection materials and connected round wires material identical, can effectively avoid sending out between connector and connected round wires
Raw electrochemical reaction, effectively avoids connector and wire inner core from being aoxidized, further decreases junction contact resistance；
(4) setting torque size locking is carried out by torque spanner, locking is more reliable, and will not destroy at contact occlusion
Structure, because screw-down torque is too small, the pressing force acted on conductor contact surface is inadequate, and it is big contact resistance easily occur, screwing force
Square is excessive, not only causes assembly difficult, but also may damage connector casing and cause joint failure.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is connector structural schematic diagram；
Fig. 3 is connector end structure illustration；
Fig. 4 is locking nut structure schematic diagram；
Fig. 5 is locking nut structure schematic diagram；
Fig. 6 is contact surface instruction structure schematic diagram；
Fig. 7 is connector size marking figure；
Fig. 8 is Axial Load Analysis schematic diagram；
Fig. 9 is existing bolt crimp connector structural schematic diagram；
Figure 10 is the left view structural representation of Fig. 9；
Figure 11 is the overlooking structure diagram of Fig. 9.
Specific implementation mode
Below in conjunction with the accompanying drawings and the present invention is described further in specific embodiment.
Embodiment 1：As Figure 1-Figure 8, a kind of round wires conducting wire locking connector, including conductive connector 1 and locking
Nut 2,1 one end of connector are provided with threaded shank 3, and the end set of threaded shank 3 has locking tube 4,2 outer end endoporus of locking nut to set
It is equipped with fastening cones section 5, locking tube 4 is provided with U-shaped opening 6, and locking nut 2 is connected in threaded shank 3, and fastening cones section 5 is squeezed
It is pressed in locking tube 4.
Preferably, above-mentioned connector 1 is set as square structure, flat type structure or polymorphic structure with respect to 3 other end of threaded shank.
Preferably, above-mentioned locking tube 4 is provided with cone guide section 7.
Preferably, 1 material of above-mentioned connector and connected round wires material identical.
Connector, locking nut material should be matched with lead material, and ensure effectively connection, and the cooperation of electrician's copper sleeve body makes
Nut should be manufactured by H80 brass, and electrician's copper sleeve is connected for copper conductor, and the nut that electrician's aluminium joint body is used cooperatively is answered
It is manufactured by high strength alumin ium alloy, electrician's aluminium joint is connected for aluminum conductor.
Locking type connector, dismounting must more renew conducting wire when once ressembling again, or be reloaded into after cutting the end of a thread, connect
Line length must be appropriate, cannot be long or too short
A kind of connection method of round wires conducting wire locking connector, this method are：One section is reserved after 8 end of round wire is peeled off
Conductive metal section inner core 9, this section of 9 length of conductive metal section inner core are less than 4 bore depth of locking tube, locking nut 2 are inserted in circle
Conductive metal section inner core 9 is inserted into locking tube 4 by conducting wire 8, and locking nut 2 is screwed using torque spanner and is connected to screw rod
In portion 3 and until 4 elastic tight of locking tube that fastening cones section 5 squeezes opening fits on conductive metal section inner core 9.
The screw-down torque that above-mentioned locking nut 2 locks locking tube 4 calculates：
If the thread contact face between connector 1 and locking nut 2 is A1, the taper between connector 1 and locking nut 2
Contact surface is A2, and cylinder contacts face is A3, the available maximum static friction force of contact surface A1, A2 between round wire 8 and connector 1
The calculation formula of square T1, T2 are as follows；
In formula (1) and (2):
F---- is axial pre tightening force；
P---- is thread pitch；
μ1----be flank friction factor；
r1The half of ----be screw thread equivalent redius and the pitch diameter of thread；
β ----it is the 1/2 of form of thread angle；
μ2The friction factor of ----between connector and nut；
r2--- it is the friction equivalent redius of connector locking tube centrum and nut tap body contact zone domain；
α2----be the 1/2 of locking tube cone guide section cone angle；
The torque relationship of conducting wire locking type connector is
T=T1+T2 (3)
I.e. the torque of conducting wire locking type connector is with axial pre tightening force F relationships
Axial pre tightening force F：
In formula (5)：D---- round wire diameters；σsThe yield strength of ----round wire；
It can must screw-down torque T according to formula (4) and formula (5)：
The friction equivalent redius r of connector and fastening cones section (5) contact area2：
In formula (7), D1----be connector diameter of thread, same to d1；
D2The tight lock tube internal diameter of ----be；
D3----be tight lock tube centrum top outer diameter；
D4The tight lock tube outer diameter of ----be.
Friction factor is chosen by table 1.
1 machined surface friction factor of table
Cos β can use formula (8) to calculate：
In formula (8)：
P---- is thread pitch；
D---- is bolt thread outer diameter；
d1----be diameter of thread；
The contact resistance of screw-down torque butt joint connection has a great impact.Screw-down torque is too small, acts on conductive contact
Pressing force on face is inadequate, easily occurs that contact resistance is big, and screw-down torque is excessive, not only causes assembly difficult, but also can energy loss
Bad connector casing and cause joint failure.
It theoretically analyzes, the contact resistance in order to ensure the connection of conducting wire is sufficiently small, locking type connector screwing force
Selection must reach the following conditions：
A. the tight lock tube processing of connector is it cannot be guaranteed that have good round precision, for the seal of contact surface, connector
The axial pre tightening force of the tight lock tube conical surface should be able to make the tight lock tube inner surface of connector generate local plastic deformation, to keep connector tight
Lock tube generates good engagement with conducting wire；
B. the axial pre tightening force of this body cone of flared fitting cannot be excessive, is integrally generated no more than connector casing
Otherwise the pretightning force of plastic deformation can make the tight lock tube of connector generate localized cracks.
Therefore, the selection of locking type connector screwing force, with 2 times of calculating compression chords of wire cross-section area, connector
Internal surface of casing compression reaches material yield strength and is advisable.
It in the place of not torque spanner, or can not check moment values, the scribing line method of tightening can also be used and tighten, i.e., it first will with hand
Nut is screwed to bottom, is drawn a line between nut and fittings body, then pulls fittings body with a spanner, then pull spiral shell with another spanner
Mother, then tighten 1/4~1/3 circle, it is ensured that it does not twist and splits locking tube.
For the example of different conductor model：
National Specification round conductor sectional area (mm2) be respectively 2.5,4,6,10,16,25,35,50,70,95,
120,150 etc., with power distribution network common 2.5,4,6,10,16,25,35,50,70,95 etc. 10 kinds of sectional area round conductors from
Locking connector carries out example design, is computed, this ten specification round conductor self-locking connector key dimension such as tables 2, copper
Round conductor self-locking connector Tightening moment such as table 3, aluminium round conductor self-locking connector Tightening moment such as table 4.
2 round conductor self-locking connector key dimension of table
3 bronze medal round conductor self-locking connector Tightening moment of table
4 aluminium round conductor self-locking connector Tightening moment of table
The above description is merely a specific embodiment example, scope of protection of the present invention is not limited thereto.It is ripe
It knows the those skilled in the art in the technical scope disclosed by the present invention, change or replacement mode can be easily found, these
It should be covered by the protection scope of the present invention.For this purpose, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (8)
1. a kind of round wires conducting wire locking connector, it is characterised in that：Including conductive connector (1) and locking nut (2), connection
Body (1) one end is provided with threaded shank (3), and the end set of threaded shank (3) has locking tube (4), locking nut (2) outer end endoporus to set
It is equipped with fastening cones section (5), locking tube (4) is provided with U-shaped opening (6), and locking nut (2) is connected in threaded shank (3), locking
Cone segments (5) are extruded in locking tube (4).
2. a kind of round wires conducting wire locking connector according to claim 1, it is characterised in that：Connector (1) is with respect to screw rod
Portion (3) other end is set as square structure, flat type structure or polymorphic structure.
3. a kind of round wires conducting wire locking connector according to claim 1, it is characterised in that：Locking tube (4) is provided with cone
Body guide section (7).
4. a kind of round wires conducting wire locking connector according to claim 1, it is characterised in that：Connector (1) material and quilt
Connect round wires material identical.
5. according to a kind of connection method of any round wires conducting wire locking connectors of claim 1-4, it is characterised in that：It should
Method is：One section of conductive metal section inner core (9) is reserved after round wire (8) end is peeled off, this section of conductive metal section inner core (9) is long
Degree is less than locking tube (4) bore depth, and locking nut (2) is inserted in round wire (8), and conductive metal section inner core (9) is inserted into and is locked
In tight pipe (4), and locking nut (2) is screwed using torque spanner and is connected in threaded shank (3) and until fastening cones section (5)
Locking tube (4) elastic tight for squeezing opening fits on conductive metal section inner core (9).
6. a kind of round wires conducting wire locking connector according to claim 5, it is characterised in that：Locking nut (2) locking lock
The screw-down torque of tight pipe (4) calculates：
If the thread contact face between connector (1) and locking nut (2) is A1, between connector (1) and locking nut (2)
Conical contact surface construction is A2, and the calculation formula of available maximum static friction torque T1, T2 of contact surface A1, A2 is as follows；
In formula (1) and (2):
F---- is axial pre tightening force；
P---- is thread pitch；
μ1----be flank friction factor；
r1The half of ----be screw thread equivalent redius and the pitch diameter of thread；
β ----it is the 1/2 of form of thread angle；
μ2The friction factor of ----between connector and nut；
r2--- it is the friction equivalent redius of connector locking tube centrum and nut tap body contact zone domain；
α2----be the 1/2 of locking tube cone guide section cone angle；
The torque relationship of conducting wire locking type connector is
T=T1+T2 (3)
I.e. the torque of conducting wire locking type connector is with axial pre tightening force F relationships
Axial pre tightening force F：
In formula (5)：D---- round wire diameters；σsThe yield strength of ----round wire；
It can must screw-down torque T according to formula (4) and formula (5)：
7. a kind of round wires conducting wire locking connector according to claim 6, it is characterised in that：Connector and fastening cones section
(5) the friction equivalent redius r of contact area2：
In formula (7), D1----be connector diameter of thread, same to d1；
D2The tight lock tube internal diameter of ----be；
D3----be tight lock tube centrum top outer diameter；
D4The tight lock tube outer diameter of ----be.
8. a kind of round wires conducting wire locking connector according to claim 6, it is characterised in that：Cos β can use formula (8) to count
It calculates：
In formula (8)：
P---- is thread pitch；
D---- is bolt thread outer diameter；
D1---- is diameter of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556242.7A CN108493632A (en) | 2018-06-01 | 2018-06-01 | A kind of round wires conducting wire locking connector and attaching method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810556242.7A CN108493632A (en) | 2018-06-01 | 2018-06-01 | A kind of round wires conducting wire locking connector and attaching method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108493632A true CN108493632A (en) | 2018-09-04 |
Family
ID=63352611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810556242.7A Pending CN108493632A (en) | 2018-06-01 | 2018-06-01 | A kind of round wires conducting wire locking connector and attaching method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN108493632A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189957A (en) * | 2019-04-22 | 2019-08-30 | 博广电气科技有限责任公司 | A kind of solid loop-net cabinet and its pole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1197426A (en) * | 1969-05-13 | 1970-07-01 | Fargo Mfg Co Inc | Electric Cable Connector |
| CN101335390A (en) * | 2007-06-26 | 2008-12-31 | 上海旭隆电气有限公司 | Manufacturing process for copper joint of conical self-locking cable |
| CN103151625A (en) * | 2013-01-18 | 2013-06-12 | 占行波 | Electric wire straight-through connector |
| CN105305124A (en) * | 2015-10-29 | 2016-02-03 | 广州番禺电缆集团有限公司 | Wire switching apparatus single body and one-piece wire switching apparatus composed thereof |
| CN106848643A (en) * | 2017-03-03 | 2017-06-13 | 曹孝培 | Fast energy-saving conductive contact in the middle of bipyramid squash type |
-
2018
- 2018-06-01 CN CN201810556242.7A patent/CN108493632A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1197426A (en) * | 1969-05-13 | 1970-07-01 | Fargo Mfg Co Inc | Electric Cable Connector |
| CN101335390A (en) * | 2007-06-26 | 2008-12-31 | 上海旭隆电气有限公司 | Manufacturing process for copper joint of conical self-locking cable |
| CN103151625A (en) * | 2013-01-18 | 2013-06-12 | 占行波 | Electric wire straight-through connector |
| CN105305124A (en) * | 2015-10-29 | 2016-02-03 | 广州番禺电缆集团有限公司 | Wire switching apparatus single body and one-piece wire switching apparatus composed thereof |
| CN106848643A (en) * | 2017-03-03 | 2017-06-13 | 曹孝培 | Fast energy-saving conductive contact in the middle of bipyramid squash type |
Non-Patent Citations (1)
| Title |
|---|
| 贵州电网有限责任公司组, 贵州大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189957A (en) * | 2019-04-22 | 2019-08-30 | 博广电气科技有限责任公司 | A kind of solid loop-net cabinet and its pole |
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