CN215418616U

CN215418616U - High current-carrying connector and connector terminal

Info

Publication number: CN215418616U
Application number: CN202121236691.7U
Authority: CN
Inventors: 王建彬
Original assignee: Ningbo Jianchao Connector Co ltd
Current assignee: Jianchao Dianlian Technology Zhejiang Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-01-04
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a high current-carrying connector. The high-current-carrying connector consists of a connector terminal and an insulating shell which can be separated from each other, wherein the connector terminal is of an integrated structure and comprises an end wire wrapping pin, a middle core wrapping pin and a socket part positioned at the other end; the socket part comprises a cylindrical jack formed by a U-shaped folding piece bent towards the direction of the middle core wrapping pin, the end part of the free end of the U-shaped folding piece bends downwards and extends to a joint part between the middle core wrapping pin and the socket part and is attached to the joint part, and the free end of the U-shaped folding piece is pressed by a C-shaped buckle bent upwards and inwards at two sides of the joint part. The utility model also discloses a connector terminal. According to the utility model, through improving the structure of the connector terminal, the current carrying of the connector is improved under the condition of not increasing the thickness of the metal sheet, so that the burning loss is reduced. The high-current-carrying connector and the connector terminal also have the advantages of simple and compact structure and easiness in processing.

Description

High current-carrying connector and connector terminal

Technical Field

The present invention relates to electrically conductive connected basic electrical components, and more particularly, to a high current carrying connector.

Background

The connector is used as a part for connecting electric equipment or a unit with a power supply/signal wire, and is widely applied due to the adoption of a plug structure, which is convenient to use.

A connector for a power supply generally includes an insulating plastic housing and a connection terminal inside the insulating plastic housing. The connectors are classified into a male connector (or a plug connector) and a female connector (or a receptacle connector). One end of the connecting terminal of the male connector is electrically connected with a plug part of a lead wire, and one end of the plug part is provided with a copper (or other metal) rod or a copper pin. One end of the connecting terminal of the female connector is connected with the lead, and the other end of the connecting terminal forms a socket part with a jack or a slot. The copper rod or the copper pin of the plug part of the male connector is inserted into the jack or the slot of the female connector, so that the two wires are quickly connected.

The connecting terminal of the female connector is generally made of a metal sheet such as copper or stainless steel by a mechanical processing process such as cutting, press bending, stamping, etc., and has an integrated structure including a wire connecting portion having one end bent in a U-shape and a socket portion having the other end bent in a U-shaped groove to be inserted by the plug portion.

The existing connector has the defect that the socket part of the female connector is easy to burn when the current-carrying capacity is large, such as a connector for an automobile air compressor. The problem of small current carrying can be solved to a certain extent by increasing the thickness of the metal sheet, but the material cost is increased and the processing difficulty is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high current-carrying connector. According to the high-current-carrying connector, the structure of the connecting terminal is improved, the current carrying of the connector is improved under the condition that the thickness of a metal sheet is not increased, and the burning loss phenomenon is reduced.

The inventor has found through research that the burning loss is caused by two design deficiencies: (1) the U-shaped jack is widened due to insufficient elasticity or fatigue deformation of the U-shaped sheet of the socket part, and poor contact or small contact area with the plug is achieved; (2) the sectional area of the connection part of the socket part and the wire connecting part is small.

In order to achieve the purpose and overcome the technical difficulty caused by the defects, the utility model adopts the following technical scheme:

a high current-carrying connector is composed of a connector terminal and an insulating shell which can be separated from each other, wherein the connector terminal is of an integral structure;

the connector terminal comprises an end covering pin, a middle core covering pin and a socket part positioned at the other end;

the socket part comprises a cylindrical jack formed by a U-shaped folding piece bent towards the direction of the middle core wrapping pin, the end part of the free end of the U-shaped folding piece bends downwards and extends to a joint part between the middle core wrapping pin and the socket part and is attached to the joint part, and the free end of the U-shaped folding piece is pressed by a C-shaped buckle bent upwards and inwards at two sides of the joint part.

Furthermore, a wing-shaped extended locking elastic sheet extends from the free end of the U-shaped folding piece of the socket part to two side edges of the bent part of the joining part respectively and is clamped on the locking position in the insulating shell.

Furthermore, the inner surface of the middle core wrapping pin is provided with a plurality of strip-shaped grooves.

Furthermore, a terminal plug hole for the insertion of the bidirectional locking elastic sheet is formed in the insulating shell.

Furthermore, the terminal plug hole is a three-phase terminal plug hole or a two-phase terminal plug hole.

Furthermore, an observation hole is formed in the insulating shell.

Further, the locking position in the insulating shell can be a groove or a protrusion, preferably, the inner wall of the insulating shell is provided with a locking elastic sheet formed by a long suspension beam, and the end part of the locking elastic sheet forms the locking position in the insulating shell and corresponds to the observation hole.

Furthermore, the end of the locking elastic sheet of the insulating shell is provided with a groove to form the locking position.

The utility model also discloses a connector terminal which is of an integrated structure and comprises an end wire wrapping pin, a middle core wrapping pin and a socket part positioned at the other end;

the socket part is provided with a U-shaped structure with an opening facing the middle core wrapping pin, two U-shaped ends of the socket part respectively clamp a two-way locking elastic sheet, and the inner side of each two-way locking elastic sheet is provided with a U-shaped buckle;

one U-shaped end head is provided with a connecting part which extends to the other U-shaped end head.

Further, the U-shaped structure forms a jack.

The insulating housing is also referred to as a connector housing, since the material of the insulating housing is plastic.

The integral structure is usually formed by stamping and bending a copper sheet or a stainless steel sheet.

The free end of the U-shaped structure of the connecting terminal socket part is bent towards the joint part and is attached to the joint part, and the two sides of the joint part press the free end of the U-shaped structure of the socket part through the C-shaped buckles to enable the free end to be attached to the joint part. Therefore, the port of the U-shaped structure of the socket part is of a closed structure, and the poor contact caused by insufficient resilience due to repeated use of the original opening structure is overcome. When the male pin is inserted oppositely, positive pressure can be provided, the structural stability is excellent, meanwhile, the thickness of the connecting part is increased, the sectional area is increased, and the current carrying is obviously improved.

The utility model has the beneficial effects that: according to the utility model, through improving the structure of the connector terminal, the current carrying of the connector is improved under the condition of not increasing the thickness of the metal sheet, so that the burning loss is reduced. The high-current-carrying connector and the connector terminal also have the advantages of simple and compact structure and easiness in processing.

Drawings

Fig. 1 is a perspective view of a connector terminal of the present invention.

Fig. 2 is a schematic cross-sectional view of a connector terminal of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic top view of a connector terminal of the present invention.

Fig. 5 is a cross-sectional view taken along line C-C of fig. 4.

Fig. 6 is a perspective view of the plastic connector shell of the present invention.

Fig. 7 is an assembly schematic of the high current carrying connector of the present invention.

Description of reference numerals: 1. a connector terminal; 2. a connector plastic shell; 3. wrapping the terminal with a wire pin; 4. a middle core wrapping pin; 5, C-shaped buckle; 6. a socket portion; 7. a locking spring sheet; 8. a tab; 9. a jack; 10. a joining section; 11. a strip-shaped groove; 12. a triangular jack; 13. an observation hole; 14. terminal plug jack, 15, locking shell fragment.

Detailed Description

Example 1: connector terminal

As shown in fig. 1 to 5, the connector terminal 1 of the present invention is a unitary structure, and is formed by stamping and bending a copper or stainless steel sheet, and includes a U-shaped terminal core pin 3, a middle core pin 4 and a socket portion 6 at the other end. The end wrapping pin 3 and the middle wrapping core pin 4 are used for connecting a wire and are respectively clamped and wrapped on the wire insulating sheath and the wire metal wire core. The receptacle portion is for receiving a copper or stainless steel pin of a plug (male end).

The socket part 6 comprises a cylindrical jack 9 formed by a U-shaped folding piece bent towards the direction of the middle core wrapping pin 4, the end part of the free end of the U-shaped folding piece bends downwards and extends to a joint part 10 between the middle core wrapping pin 4 and the socket part 6 and is attached to the joint part, and the U-shaped folding piece is pressed and locked by C-shaped buckles 5 bent upwards and inwards at two sides of the joint part 10, so that the U-shaped folding piece forming the opening of the jack 9 in the prior art is improved into a closed structure.

A wing-shaped extending locking elastic sheet 7 is respectively extended from the free end of the U-shaped folding piece of the socket part 6 to the two sides of the bending part of the joining part 10 and is used for preventing the connector from falling off when being installed on a connector plastic shell.

A connecting piece 8 is further provided between the end covering leg 3 and the middle core covering leg 4, and as shown in fig. 1 and 4, the connecting piece 8 is used for facilitating the punching of the connector terminals by continuous copper or stainless steel strips, and the punched connector terminals are connected together one by one through the connecting piece 8.

The end wrapping pin 3 is a U-shaped large wrapping pin, is used for wrapping the wire insulation sheath by pressing with a tool, and is connected and fixed at the end of the wire. The middle core pin 4 is a small covered wire pin, and a metal wire core of the wire is covered by a tool in a pressing mode, so that the electric connection between the connecting terminal and the wire is realized. The inner surface of the middle core pin 4 is provided with a plurality of strip-shaped grooves 11, so that the plastic deformation embedding of the core is convenient to improve the contact area and enhance the current-carrying effect when the surface of the core is pressed, and the core is prevented from falling off through convex-concave occlusion.

The socket part 6 is a closed U-shaped structure, the inner space of the socket part is a male connector, namely a jack 9 into which a pin copper needle of a plug is inserted, the free end of the socket part is bent towards the linking part 10 and is attached to the linking part 10, two sides of the linking part 10 are pressed through the C-shaped buckles 5 to be attached to the linking part 10, the free end plane of the U-shaped port is tightly locked in a fitting manner, the U-shaped port is effectively closed, and even if the pin copper needle of the pin of the plug is repeatedly plugged, the U-shaped structure of the socket part 6 cannot be deformed to widen the jack. Therefore, when the male pin is inserted, positive force can be provided, the stability is excellent, poor contact with the male pin is avoided, and the current carrying capacity is improved. As shown in fig. 4 and 5, the free end of the U-shaped structure is attached to the joint portion 10, and the joint portion 10 between the core pin 4 and the socket portion 6 has a double-layer structure, so that the cross-sectional area is increased, and the current carrying capacity is further improved. Meanwhile, the end part of the wire core can be lapped on the joint part, so that the current carrying is further improved.

Example 2: high current-carrying connector

As shown in fig. 6, the connector housing 2 of the present invention has the following structure: three pin-shaped receptacles 12 are provided for inserting the pins (copper pins) of a plug. As shown in fig. 7, a locking spring piece 15 formed by a long cantilever beam is arranged on the wall in the connector plastic shell 2. Three observation holes 13 are formed in the connector plastic shell and are positioned at the opposite insertion positions of the connecting terminals, namely the end positions of the locking elastic sheets 15, namely whether the locking elastic sheets 7 of the connector terminals 1 and the locking elastic sheets 15 of the connector plastic shell 2 are mutually clamped or not is observed as shown in fig. 7, and the opposite insertion effect is observed. The observation hole 13 has another function of using a hook-shaped needle to elongate the suspension beam to disengage the locking spring 15 from the locking spring 7 on the connector terminal 1, so that the connector terminal 1 can be pulled out from the connector plastic shell 2. The 15 tip of locking shell fragment has a recess in order to block locking shell fragment 7, forms sub-locking position, locks the position of the 7 tip locking of shell fragment promptly, steerable two locking shell fragments overlap joint sectional areas simultaneously.

The terminal insertion holes 14 are located at the front end of the plastic connector housing 2, one in the middle and one on each side, three in total, as shown in fig. 6. Three terminal insertion holes 14 are used simultaneously to form a three-phase connector; the two terminal insertion holes 14 are used simultaneously, and thus a two-phase connector is formed.

When the connector terminal 1 described in embodiment 1 is inserted into the terminal insertion hole 14 and the connector terminal 1 is engaged with the locking spring of the connector plastic housing 2, the connector terminal 1 and the connector plastic housing 2 are integrated, and the assembly of the entire connector is achieved, as shown in fig. 7.

The present invention relates to a high current carrying connector, and the principle and the implementation of the present invention are explained in detail by using specific examples, and the above description of the embodiments is only used to help understanding the scheme of the present invention and the core idea thereof. It should be noted that the present invention is not limited to the above-described exemplary embodiments, and those skilled in the art can make various changes and modifications without departing from the scope or spirit of the present invention. Meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific implementation and the application range may be changed; accordingly, in view of the above, this summary should not be construed as limiting the utility model.

Claims

1. A high current-carrying connector comprising a connector terminal and an insulating housing separable from each other, the connector terminal being of an integral structure,

2. The high current carrying connector according to claim 1, wherein a wing-like projecting locking spring is extended from each of two sides of a bent portion of the U-shaped folded piece of the socket portion toward the engaging portion, and is engaged with the locking portion in the insulating housing.

3. A high current carrying connector as claimed in claim 1, wherein said core pin has a plurality of strip grooves formed on an inner surface thereof.

4. The high current carrying connector according to claim 2, wherein the insulating housing has a terminal insertion hole into which the locking spring is inserted.

5. The high current carrying connector of claim 4, wherein said insulative housing defines a viewing aperture.

6. The high current carrying connector of claim 5, wherein said inner wall of said housing has a locking spring formed by a long cantilever beam, and an end of said locking spring forms a locking position in said housing and corresponds to said viewing opening.

7. The high current carrying connector of claim 5, wherein said locking tab end of said insulating housing has a groove forming said locking position.

8. A high current carrying connector as claimed in claim 7, wherein said core pin has a plurality of strip grooves formed on an inner surface thereof.

9. A connector terminal is of an integrated structure and is characterized by comprising an end wire wrapping pin, a middle core wrapping pin and a socket part positioned at the other end;

10. The connector terminal of claim 9, wherein a wing-like projecting locking spring is extended from each side of the bent portion of the free end of the U-shaped flap of the socket portion toward the engaging portion.