CN203456605U - Wire connection device - Google Patents
Wire connection device Download PDFInfo
- Publication number
- CN203456605U CN203456605U CN201320561492.2U CN201320561492U CN203456605U CN 203456605 U CN203456605 U CN 203456605U CN 201320561492 U CN201320561492 U CN 201320561492U CN 203456605 U CN203456605 U CN 203456605U
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- CN
- China
- Prior art keywords
- metal
- metal screw
- binding post
- screw
- termination
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the field of electric equipment, and provides a wire connection device for connecting wiring terminals of current wire harnesses. The device comprises an insulating seat and a metal screw rod mounted on the insulating seat. The metal screw rod includes a first end and a second end opposite to each other. The first end is fixed inside the insulating seat, and the second end has outer threads. The first end is provided with projected metal stoppers along the radial direction of the metal screw rod, and the metal stopper has a contact face protruding out of the insulating seat. According to the wire connection device provided by the utility model, the metal stoppers are arranged on the metal screw rod, and the wiring terminals are clamped by metal screw nuts and the metal stoppers; as the metal screw rod, the metal stoppers, the wiring terminals and the metal screw nuts are all made of metal, and have small difference in the expansion and contraction coefficients, so that the good contact of the wiring terminals is ensured after multiple times of heating and cooling by the operation of a large current, and the phenomena of sparking and burning caused by the loosening of the connection between wiring terminals are prevented; besides, the contact resistance is reduced, so that the heat generated when the large current passes is reduced.
Description
Technical field
The utility model belongs to electric equipment field, relates in particular to a kind of termination.
Background technology
The connection of the large electric current wire harness between high-power electrical equipment is very general, mostly be connector and connect, but the reliability connecting because of structure and the complexity difference of connector itself variant.The termination of prior art, is generally comprised of metal screw and plastic body, is roughly a metal screw part and is embedded in plastic body, and a part is vertically stretched out outside plastic body, and extension is for the connection of large electric current wire harness.Large electric current wire harness is to be generally connected with metal screw by binding post.Normally two binding posts are placed on metal screw, then metal nuts is installed, by metal nuts and plastic body, grip two binding posts, and make two binding post contacts, realize the electrical connection of large electric current wire harness.
And the electric current that large electric current wire harness flows through is conventionally very large, between two binding posts there is contact resistance in contact portion, when logical super-high-current, can produce a large amount of heat.While working long hours, the contact portion temperature of binding post and termination can be very high, but metal screw, binding post, metal nuts is metal, plastic body belongs to plastics, its coefficient of thermal expansion and contraction has larger difference, so after repeatedly expanding with heat and contract with cold, it is large that gap between plastic body and binding post just can become, therefore cause and between two binding posts, connect compactness or loose contact not, cause contact resistance therebetween to increase, when large electric current flows through, can cause the contact portion temperature of two binding posts sharply to rise, high temperature also can cause the distortion of plastic body, temperature between two binding posts is further worsened, very easily produce spark phenomenon and burn binding post, even the equipment of igniting causes the loss of the person and property.
Utility model content
The purpose of this utility model is to provide a kind of termination that is provided with metal backup, be intended to solve in prior art because coefficient of thermal expansion and contraction between metal screw, binding post, metal nuts and plastic body has larger difference to cause and between binding post, connect compactness or loose contact not, and then produce spark phenomenon and burn binding post, even the equipment of igniting causes the problem of the loss of the person and property.
The utility model is to realize like this, a kind of termination, for the connection between the binding post of electric current wire harness, it comprises insulating base and is installed on described insulating base and for being set with the metal screw of described binding post, described metal screw is respectively first end and the second end, described first end is fixed in described insulating base, described the second end has external screw thread, described the second end is provided with metal nuts, described first end is provided with metal backup along described metal screw radial convex, described metal backup has and protrudes out described insulating base and for coordinating with described metal nuts the contact-making surface that compresses described binding post.
Further, described metal backup and described metal screw are one-body molded.
Further, the first end of described metal screw is provided with fixed block along described metal screw radial convex, described fixed block and described metal backup interval arrange, and described fixed block is positioned at described metal backup away from a side of described the second end, and described fixed block is embedded in described insulating base.
Further, described fixed block and described metal screw are one-body molded.
Further, on described insulating base, offer containing cavity, described metal screw is installed in described containing cavity.
Further, described containing cavity is a plurality of, and interval arranges, and metal screw described at least one is installed in containing cavity described in each.
Further, described metal screw the second end is also arranged with pad, and described pad is located between described metal nuts and described metal backup.
Further, on described insulating base, offer installing hole.
The utility model by arranging metal backup on the metal screw of termination.After binding post is installed on metal screw, by metal nuts and metal backup, grip binding post, because metal screw, metal backup, binding post and metal nuts are metal, coefficient of thermal expansion and contraction difference is little, guaranteed through large current work heating repeatedly and cooling after, good contact between binding post, simultaneously, even if insulating base part can not affect the connection effect between binding post because of high temperature deformation yet, stopped that phenomenon occurs because connecting the loosening sparking causing between binding post and burn etc.In addition, electric current can also pass through metal backup, metal screw and metal nuts and flow to another binding post, has reduced contact resistance, and when large electric current flows through, caloric value is less, large electric current wire harness is connected more reliable.
Accompanying drawing explanation
Fig. 1 is the perspective view of the termination that provides of the utility model embodiment;
Fig. 2 is the plan structure schematic diagram of the termination of Fig. 1;
Fig. 3 is the sectional structure schematic diagram along Fig. 1 center line A-A;
Fig. 4 is perspective view when termination connects electric current harness connecting terminal in Fig. 1;
Fig. 5 is the structural representation of facing when termination connects electric current harness connecting terminal in Fig. 4;
Fig. 6 is along the sectional structure schematic diagram of Fig. 5 center line B-B;
Fig. 7 is the enlarged drawing of C part in Fig. 6.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 2 and Fig. 3, a kind of termination that the utility model embodiment provides, for the connection between the binding post of electric current wire harness, it comprises insulating base 11 and is installed on the metal screw 12 on insulating base 11.When connecting binding post, metal screw 12 is mainly used to be set with binding post, is about to binding post and is sleeved on metal screw 12.Insulating base 11 can be to make with plastic cement or other insulating material.The two ends of definition metal screw 12 are respectively first end 121 and the second end 122.The first end 121 of metal screw 12 is fixed in insulating base 11, and this first end 121 is provided with metal backup 123 along metal screw 12 radial convexes, and metal backup 123 has the contact-making surface 124 that protrudes out insulating base 11.The second end 122 that the second end 122 of metal screw 12 has external screw thread (not marking in figure) metal screw 12 is also provided with metal nuts 13.When connecting the binding post of electric current wire harness, binding post is sheathed on metal screw 12, at the second end 122 of metal screw 12, metal nuts 13 is installed again, by metal nuts 13 and metal backup 123 binding post that is clamped, the contact-making surface 124 by metal backup 123 coordinates and compresses binding post with metal nuts 13, thereby guarantees the good contact between binding post.
By metal backup 123 being set on the metal screw 12 at termination.After binding post is installed on metal screw 12, by metal nuts 13, screw, make the contact-making surface 124 of metal backup 123 support binding post, thereby realize metal nuts 13 and metal backup 123 grips binding post.Because metal screw 12, metal backup 123, binding post and metal nuts 13 are metal, coefficient of thermal expansion and contraction is very approaching, and difference is little.Through large current work heating repeatedly and cooling after, still can guarantee the good contact between binding post.
Simultaneously, because metal screw 12, metal backup 123, binding post and metal nuts 13 are metal, even if insulating base 11 parts, because of high temperature deformation, can not affect the connection effect between binding post yet, stopped that phenomenon occurs because connecting the loosening sparking causing between binding post and burn etc.
In addition, electric current flows except between the contact-making surface between binding post, can also pass through metal backup 123, metal screw 12 and metal nuts 13 and flow to another binding post from a binding post, reduced the contact resistance between binding post, when large electric current flows through, caloric value is less, large electric current wire harness is connected more reliable.
Further, metal backup 12 is one-body molded with metal screw 123.Thereby assurance metal backup 123 is fixedly connected with 12 of metal screws, and coefficient of thermal expansion and contraction is consistent; Processing and manufacturing is simple.Certainly, in some other embodiment, metal backup 123 also can be welded on metal screw 12, or the metal nuts 13 that metal backup 123 use are arranged on metal screw 12 replaces.
Further, the first end 121 of metal screw 12 is provided with fixed block 125 along metal screw 12 radial convexes, and fixed block 125 arranges with metal backup 123 intervals, and fixed block 125 is positioned at metal backup 123 away from a side of metal screw 12 second ends 122.Fixed block 125 is embedded in insulating base 11.By fixed block 125 is set, and imbedded in insulating base 11, thereby metal screw 12 is more stably fixed in insulating base 11.Meanwhile, when insulating base 11 is during because of high temperature deformation, also can play and prevent that metal screw 12 from coming off from insulating base 11.
Further, fixed block 125 is also integrated with metal screw 12, to facilitate processing and manufacturing.
Further, offer containing cavity 111 on insulating base 11, metal screw 12 is installed in containing cavity 111.Containing cavity 111 is set, can plays the effect of protection metal screw 12.After binding post is arranged on metal screw 12, containing cavity 111 can also play the effect of protection binding post.
Further, containing cavity 111 is a plurality of, and interval setting, at least one containing cavity 111, metal screw 12 is installed.Containing cavity 111 is made as a plurality of, the quantity of the electric current wire harness that can connect is as required determined metal screw 12 quantity that arrange.While being provided with metal screw 12 in a plurality of containing cavities 111, can meet the needs of the binding post connection of many group electric current wire harness.This termination can be made connecting terminal block, to realize the connection of many group electric current wire harness simultaneously.
Further, in each containing cavity 111, at least one metal screw 12 is installed.If a metal screw 12 is set in a containing cavity 111, when needs are connected a plurality of electric current wire harness, corresponding a plurality of binding posts need to be fixed on same metal screw 12, realize the connection between corresponding a plurality of electric current wire harness, but now,, owing to being fixed with a plurality of binding posts on same metal screw 12, compress a plurality of binding posts, the pressure needing is larger, is also difficult to realize good contact and fixing between adjacent line terminals.If a plurality of metal screws 12 are set in a containing cavity 111, when needs are connected a plurality of electric current wire harness, corresponding a plurality of binding posts can be separately fixed on different metal screw 12,12 of metal screws are electrically connected to again, thereby can make only to connect one to two binding post on each metal screw 12, be convenient to the fixing of binding post and be electrically connected to.
Further, metal screw 12 second ends 122 are also arranged with pad 14, and pad 14 is located between metal nuts 13 metal nuts 13 and metal backup 123.Pad 14 is set, after binding post is installed on metal screw 12, by pad 14, support binding post, can make binding post fixing more stable, simultaneously, by supporting of pad 14, in binding post, metal screw 12, metal backup 123 and metal nuts 13 metal nuts 13, expand with heat and contract with cold while changing, also can make to carry out between binding post good contact.
Further, on insulating base 11, offer installing hole 112.To facilitate, fix this termination.
Refer to Fig. 3 to Fig. 7, termination of the present utility model and the embodiment that typically electric current harness connecting terminal is fixedly linked.Wherein, on the insulating base 11 of termination, offer five containing cavities 111, in each containing cavity 111, be equipped with a metal screw 12, thereby can realize the connection of five groups of electric current wire harness 2.The wherein one group of electric current wire harness 2 of take is example explanation:
This group electric current wire harness 2 comprises two electric current wire harness 21,22, and the end of electric current wire harness 21 is provided with binding post 211, and the end of electric current wire harness 22 is provided with binding post 221.During installation, first screw off metal nuts 13 metal nuts 13, then take off pad 14; Then binding post 221 is enclosed within on metal screw 12, again binding post 211 is enclosed within on metal screw 12, overlap again Upper gasket 14, screw metal nuts 13 metal nuts 13, thereby make pad 14 force down binding post 211, make two binding post 211,221 close contacts, make binding post 221 and metal backup 123 close contacts, metal nuts 13 metal nuts 13 clamp pad 14, binding post 211 and binding post 221 with metal backup 123 simultaneously.Realize like this electrical connection between electric current wire harness 21 and electric current wire harness 22.Electric current not only can flow between binding post 211, binding post 221 contact-making surfaces, can also from a binding post 211, flow to another binding post 221, thereby can reduce contact resistance through metal screw 12, metal backup 123.When large electric current flows through, caloric value is less, large electric current wire harness is connected more reliable.
Because metal screw 12, metal backup 123, binding post and metal nuts 13 metal nuts 13 are metal, coefficient of thermal expansion and contraction is very approaching, and difference is little.Through large current work heating repeatedly and cooling after, still can guarantee the good contact of 221 of binding post 211 and binding posts.Even if insulating base 11 parts because of high temperature deformation, can not affect the effect that is connected of binding post 211 and 221 of binding posts yet, stopped to occur because 221 of binding post 211 and binding posts are connected the loosening sparking causing and the phenomenon such as burn.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a termination, for the connection between the binding post of electric current wire harness, it comprises insulating base and is installed on described insulating base and for being set with the metal screw of described binding post, described metal screw is respectively first end and the second end, described first end is fixed in described insulating base, described the second end has external screw thread, described the second end is provided with metal nuts, it is characterized in that: described first end is provided with metal backup along described metal screw radial convex, described metal backup has and protrudes out described insulating base and for coordinating with described metal nuts the contact-making surface that compresses described binding post.
2. termination as claimed in claim 1, is characterized in that: described metal backup and described metal screw are one-body molded.
3. termination as claimed in claim 1, it is characterized in that: the first end of described metal screw is provided with fixed block along described metal screw radial convex, described fixed block and described metal backup interval arrange, and described fixed block is positioned at described metal backup away from a side of described the second end, and described fixed block is embedded in described insulating base.
4. termination as claimed in claim 3, is characterized in that: described fixed block and described metal screw are one-body molded.
5. the termination as described in claim 1-4 any one, is characterized in that: on described insulating base, offer containing cavity, described metal screw is installed in described containing cavity.
6. termination as claimed in claim 5, is characterized in that: described containing cavity is a plurality of, and interval arranges, and metal screw described at least one is installed in containing cavity described in each.
7. the termination as described in claim 1-4 any one, is characterized in that: described metal screw the second end is also arranged with pad, and described pad is located between described metal nuts and described metal backup.
8. the termination as described in claim 1-4 any one, is characterized in that: on described insulating base, offer installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561492.2U CN203456605U (en) | 2013-09-10 | 2013-09-10 | Wire connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320561492.2U CN203456605U (en) | 2013-09-10 | 2013-09-10 | Wire connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456605U true CN203456605U (en) | 2014-02-26 |
Family
ID=50136461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320561492.2U Expired - Fee Related CN203456605U (en) | 2013-09-10 | 2013-09-10 | Wire connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560397A (en) * | 2018-12-14 | 2019-04-02 | 中国航空工业集团公司西安飞机设计研究所 | A kind of high-power electric wire buttcover plate for firewall |
-
2013
- 2013-09-10 CN CN201320561492.2U patent/CN203456605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560397A (en) * | 2018-12-14 | 2019-04-02 | 中国航空工业集团公司西安飞机设计研究所 | A kind of high-power electric wire buttcover plate for firewall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |