Electric connector
[technical field]
The utility model relates to a kind of electric connector, relates in particular to a kind of electric connector that is used for connecting a chip component on the circuit board that is installed on.
[technical background]
Electric connector is widely used in being used for connecting other electronic devices and components in computer, consumption electronic products and other electronic equipments, and it is made up of the insulating body of plastic cement and the plurality of conductive terminals that is assembled in the insulating body usually.For guaranteeing that conducting terminal can be retained in the insulating body securely, be typically provided with the hangnail that cooperates with the insulating body interference on the conducting terminal.Though can doing something in disregard of obstacles to relate to by hangnail and insulating body, this conducting terminal of prior art cooperates, but when conducting terminal uses the back elastic failure for a long time or need change because of other reason, conducting terminal is not easy to take out in the insulating body, perhaps conducting terminal hangnail in the taking-up process can damage and strike off the plastic cement structure of insulating body, can't keep the retain strength of expecting between new conducting terminal that is assembled into after making and the insulating body, thereby make the conducting terminal fixing effect not good.
Therefore, necessary existing electric connector is improved to overcome the defective of prior art.
[utility model content]
The purpose of this utility model is to provide a kind of to be had better conducting terminal fixing effect and is convenient to the electric connector that conducting terminal is changed.
The utility model electric connector is achieved through the following technical solutions: a kind of electric connector, be used to connect a chip component, it comprises insulating body and is assembled in plurality of conductive terminals in the insulating body, conducting terminal comprises base portion, the contact arm that is extended up and down respectively by base portion and the holding parts that is positioned at the base portion side, and holding parts comprises elastic portion and with the elastic portion adjacent cavity portion inconsistent with insulating body.
Compared to prior art, the utility model electric connector makes conducting terminal have fixing effect preferably in insulating body owing to adopt the holding parts design with elastic construction, when conducting terminal is changed simultaneously, can not be damaged to the plastic cement part of insulating body.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of the utility model electric connector.
Fig. 2 is the three-dimensional view of conducting terminal of the present utility model.
Fig. 3 is that conducting terminal of the present utility model is assembled in the part three-dimensional cutaway view in the insulating body.
Fig. 4 is that conducting terminal of the present utility model is assembled in the part section plan in the insulating body.
[embodiment]
Please join Fig. 1, the utility model electric connector 1 is assembled on the circuit board (not shown), is used for connecting a chip component (not shown), and it comprises insulating body 2, is assembled in the plurality of conductive terminals 3 in the insulating body 2.Insulating body 2 structure that is square substantially wherein is provided with some terminal holes 20 of accommodating conducting terminal 3.
Emphasis is with reference to Fig. 2, two pairs of contact arms 31,32 that conducting terminal 3 comprises base portion 30 in the middle of being positioned at, extended up and down respectively by base portion 30, and the holding parts 33 that is positioned at base portion 30 left and right sides.Upwards reaching the contact arm that extends downwards extends towards the homonymy on plane, base portion 30 place respectively.Between two contact arms 31 (32) that extend in the same way on the above-below direction, has certain distance.Holding parts 33 is used for matching with insulating body 2 and incompatible conducting terminal 3 is fixed in the insulating body 2.Between holding parts 33 and the adjacent contact arm 31,32, form a gap 34 respectively in the both sides up and down of holding parts 33 and base portion 30 connections.Holding parts 33 integral body are lengthwise type structure, which is provided with the elastic portion 330 with insulating body 2 inconsistent cooperations, and elastic portion 330 has and insulating body 2 contacted arc limits 331.Contiguous elastic portion 330 has a sealed hollow portion 332.
Emphasis ginseng Fig. 3 and Fig. 4, terminal hole 20 run through the upper and lower surface (not indicating) of insulating body 2.Conducting terminal 3 is upwards packed into from the lower surface of insulating body 2, and the upper surface of insulating body protruding upward 2.Slight deformation takes place owing to being subjected to compressing of terminal hole 20 inwalls in the elastic portion 330 of holding parts 33, forms certain interfering edge between while and the insulating body 2.Terminal hole 20 inside are step-like structure and respectively are provided with a stop part 200 in both sides, prevent that to stop holding parts 33 conducting terminal 3 from further moving upward.
Because being provided with, holding parts 33 is used for and the elastic portion 330 that matches of insulating body; when conducting terminal 3 is inserted in the process of terminal hole 20; corresponding strain takes place in elastic portion 300; so it can not scrape the plastic cement that decreases insulating body 2 as the hangnail of prior art; thereby protected the plastic cement structure in the terminal hole 20; in the time of need changing when generation elastic failure after conducting terminal 3 long-term the uses or because of other reason, still can keep the retain strength of being scheduled between new conducting terminal that inserts and the insulating body 2.Elastic portion 330 has and insulating body 2 contacted arc limits 331 in addition, and this arc limit 331 can make things convenient for the insertion of conducting terminal 3 and extract, and the existing picture of the corner angle scraping plastic cement of holding parts 33 can not take place.