CN110190437B

CN110190437B - Contact and connector using same

Info

Publication number: CN110190437B
Application number: CN201810155722.2A
Authority: CN
Inventors: 李猛; 崔艳磊; 张智宇
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2018-02-23
Filing date: 2018-02-23
Publication date: 2021-07-30
Anticipated expiration: 2038-02-23
Also published as: CN110190437A

Abstract

The invention relates to a contact element and a connector using the same, wherein the contact element comprises a conductive base body, the conductive base body is provided with an elastic pressing part which is pressed by an adaptive contact element to be elastically deformed, a conductive contact block fixedly connected with the conductive base body is fixedly connected onto the elastic pressing part, the conductive contact block is provided with a contact surface for being in conductive contact with the adaptive contact element, the conductivity of the conductive contact block is higher than that of the conductive base body, the high conductivity of the conductive contact block enables the contact resistance of the contact element to be lower, and therefore the heating of the contact element can be reduced, the temperature rise of the contact element can be reduced, and the through-current capacity of the connector can be improved. Meanwhile, the split type contact piece has the advantages that the requirement on the elastic performance of the contact piece can be met, the requirement on the low cost of the contact piece can also be met, the structure is simple, the actual processing is convenient, and the split type contact piece has certain universality.

Description

Contact and connector using same

Technical Field

The present invention relates to a contact and a connector using the same.

Background

The contact is an important part of a connector as a communicating and conductive member of the connector, and the demand for the current capacity of the connector is increasing with the market development. An important indicator for examining the current capacity of a connector is the value of the temperature rise at rated current (i.e. the value of the temperature rise). Under the same rated current, the lower the temperature rise value is, the stronger the through-current capacity is. Therefore, a contact with low contact resistance is needed to reduce heat generation and temperature rise to improve the current capacity of the connector. Currently, a contact element in the prior art is a single structure, as shown in fig. 1 or fig. 2, the contact element 1 is made of a single material, and a base body and an elastic portion of the contact element are integrally formed by a plate made of the same material. Contact resistance generally decreases as the conductivity of the material increases, and thus materials with high conductivity tend to have lower contact resistance. Pure copper has the highest conductivity in the field of copper alloys, but the material yield strength of pure copper is low, so that the pure copper is not suitable for being integrally used as a contact piece requiring a larger elastic function. The existing products generally adopt copper alloy materials with better mechanical property and high conductivity to manufacture the contact piece, but the manufacturing cost is higher.

Disclosure of Invention

The invention aims to provide a contact element, which aims to solve the problems that the contact element in the prior art is low in yield strength due to the adoption of pure copper and high in cost due to the adoption of copper alloy; it is also an object of the present invention to provide a connector using the contact.

In order to achieve the purpose, the technical scheme of the contact element is as follows:

scheme 1, a contact, including electrically conductive base member, electrically conductive base member has the elasticity top splenium that supplies the top pressure of adaptation contact and elastic deformation, fixedly connected with and electrically conductive base member fixed connection's electrically conductive contact body on the elasticity top splenium, electrically conductive contact body has the contact surface that is used for with the electrically conductive contact of adaptation contact, electrically conductive contact body's electric conductivity is higher than electrically conductive base member's electric conductivity.

Scheme 2, on the basis of scheme 1, the conductive contact is a block structure.

Scheme 3, on the basis of scheme 2, be equipped with the holding tank that is used for holding electrically conductive contact on the elasticity top splenium.

Scheme 4, on the basis of any one of schemes 1 to 3, the conductive base body is fixedly connected with the conductive contact body through one of embedding, riveting or welding.

Scheme 5, on the basis of any one of schemes 1 to 3, the conductive contact body is made of pure copper, and the conductive base body is made of copper alloy.

The technical scheme of the connector is as follows:

scheme 1, connector, including the casing with set up the contact in the casing, its characterized in that: the contact comprises a conductive base body, the conductive base body is provided with an elastic pressing portion for pressing the adaptive contact and elastically deforming, the elastic pressing portion is fixedly connected with a conductive contact body fixedly connected with the conductive base body, the conductive contact body is provided with a contact surface used for being in conductive connection with the adaptive contact, and the conductivity of the conductive contact body is higher than that of the conductive base body.

The invention has the beneficial effects that: compared with the prior art, the contact element has the advantages that the original contact element split body with the integrated design is arranged into the conductive base body and the conductive contact element, the conductive contact element is fixedly connected to the conductive base body, and meanwhile, the conductivity of the conductive contact element is higher than that of the conductive base body, so that the contact resistance of the contact element is lower due to the high conductivity of the conductive contact element in actual work, the heating of the contact element can be reduced, the temperature rise of the contact element can be reduced, and the through-current capacity of the connector can be improved. Meanwhile, the split type contact piece has the advantages that the requirement on the elastic performance of the contact piece can be met, the requirement on the low cost of the contact piece can also be met, the structure is simple, the actual processing is convenient, and the split type contact piece has certain universality.

Drawings

FIG. 1 is a schematic diagram of a contact in the prior art;

FIG. 2 is a schematic diagram of a contact in the prior art;

FIG. 3 is a schematic structural view of embodiment 1 of the contact of the invention;

fig. 4 is a schematic structural view of embodiment 2 of the contact of the invention.

Description of reference numerals: 1-a contact; 11-a conductive matrix; 12-a conductive contact; 111-elastic top pressing end; 112-terminal; 113-a receiving tank; 114-a spring plate; 121-contact surface.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

Embodiment 1 of the contact according to the present invention, as shown in fig. 3, the contact 1 in this embodiment is a sheet structure, which includes a conductive base 11, wherein one end of the conductive base 11 is a terminal 112 for electrically connecting with a cable, and the other end is an elastic pressing end 111 for pressing against the mating contact to generate elastic deformation, and in this embodiment, the conductive base 11 is made of copper alloy material, and is integrally formed, and has high electrical conductivity, strong mechanical property, and high yield strength.

The elastic pressing end 111 of the contact element 1 is further provided with an accommodating groove 113, a conductive contact 12 is embedded in the accommodating groove 113, the conductive contact is a block-shaped structure, in this embodiment, the elastic pressing end 111 of the conductive base 11 is a plate-shaped structure, the accommodating groove 113 extends in a direction perpendicular to the inserting direction of the contact element 1, and the conductive contact 12 is fixed in the accommodating groove 113 and is electrically connected with the conductive base 11. In this embodiment, the conductive contact body 12 is made of pure copper, pure copper has a higher conductivity than copper alloy, and the yield strength of pure copper is lower, so that the conductive contact body 12 is only used for realizing conductive contact with the mating contact, the conductive contact body 12 is provided with the contact surface 121, and through the relatively fixed connection between the conductive base 11 and the conductive contact body 12, in the actual connection process, the conductive contact body 12 ensures that the contact 1 can have higher conductivity and lower contact resistance, so that the requirement for larger current capacity can be met, and heat generation is reduced. Meanwhile, the conductive base body 11 ensures that the contact element 1 can have better mechanical performance, and in the process of connecting with the adaptive contact element, the elastic pressing part deforms to realize pressing contact with the adaptive contact element, so that stable connection between the conductive contact element 12 and the adaptive contact element is ensured.

The conductive contact body 12 is fixed on the base body, and a contact surface 121 connected with the adaptive contact element is formed on one side of the conductive contact body opposite to the conductive base body 11, so that a larger contact area can be ensured between the contact element 1 and the adaptive contact element, and the contact effect is improved while the through-current capacity is ensured.

And the high conductivity of the conductive contact body 12 enables the contact resistance of the contact element 1 to be lower, so that the heating of the contact element 1 can be reduced, the temperature rise of the contact element 1 can be reduced, and the through-current capacity of the connector can be improved. Meanwhile, the split type contact element 1 can meet the requirements on the elastic performance of the contact element 1 and the low-cost requirement of the contact element 1, and the split type contact element is simple in structure, convenient to actually process and has certain universality.

In the present embodiment, the conductive base 11 and the conductive contact 12 are fixed together by means of an inlay.

The embodiment 2 of the contact member of the present invention is different from the embodiment 1 in that, as shown in fig. 4, the elastic pressing end 111 of the contact member 1 is formed by arranging a plurality of spring pieces 114 side by side at intervals, each spring piece 114 has a corresponding receiving groove 113, and the conductive contact body 12 has a plurality of receiving grooves 113 corresponding to one.

In other embodiments, the conductive contact 12 may be made of silver or a copper alloy with high conductivity; the conductive substrate 11 can be made of other high-conductivity copper alloy materials, such as tin bronze, beryllium bronze and the like, and has good mechanical properties and high conductivity; the conductive base body 11 and the conductive contact body 12 can be fixed together by adopting other connection modes such as riveting, welding and the like, so that stable conductive connection between the conductive base body and the conductive contact body can be realized while relative fixation is ensured; the contact piece can also be applied to contact pieces with other shapes, such as round, rectangular and other structural forms; the conductive contact may also be a layered structure plated on a conductive substrate.

An embodiment of a connector according to the present invention includes a housing and a contact provided in the housing, and the embodiment of the contact is identical to the structure of any of the above-described embodiments of the contact, and is not expanded in detail.

Claims

1. A contact, characterized by: the cable connector comprises a conductive base body, wherein one end of the conductive base body is a wiring end used for being in conductive connection with a cable, the other end of the conductive base body is an elastic pressing part which is pressed by an adaptive contact piece to be elastically deformed, the elastic pressing part is fixedly connected with a conductive contact body fixedly connected with the conductive base body, the conductive contact body is made of pure copper, and the conductive base body is made of copper alloy; the conductive contact body is a block structure, an accommodating groove used for accommodating the conductive contact body is formed in the elastic jacking portion, the conductive base body is fixedly connected with the conductive contact body through embedding, riveting or welding, the conductive contact body is provided with a contact surface used for being in conductive contact with the adaptive contact piece, and the conductivity of the conductive contact body is higher than that of the conductive base body.

2. The connector comprises a shell and a contact piece arranged in the shell, and is characterized in that: the contact comprises a conductive base body, one end of the conductive base body is a wiring end used for being in conductive connection with a cable, the other end of the conductive base body is an elastic pressing part used for being pressed by the adaptive contact to be elastically deformed, the elastic pressing part is fixedly connected with a conductive contact body fixedly connected with the conductive base body, the conductive contact body is made of pure copper, and the conductive base body is made of copper alloy; the conductive contact body is a block structure, an accommodating groove used for accommodating the conductive contact body is formed in the elastic jacking portion, the conductive base body is fixedly connected with the conductive contact body through embedding, riveting or welding, the conductive contact body is provided with a contact surface used for being in conductive connection with the adaptive contact piece, and the conductivity of the conductive contact body is higher than that of the conductive base body.