CN2645275Y

CN2645275Y - Structure of electric connector

Info

Publication number: CN2645275Y
Application number: CN 03266659
Authority: CN
Inventors: 褚长兴; 许文龙
Original assignee: XUANDE CO Ltd
Current assignee: XUANDE CO Ltd; Speed Tech Corp
Priority date: 2003-07-01
Filing date: 2003-07-01
Publication date: 2004-09-29
Anticipated expiration: 2013-07-01

Abstract

The utility model relates to a structure of electric connector. The electric connector comprises a colloid which is the combination of a power connecting piece and a signal connecting piece; the inner side of the colloid is properly provided with a batch of terminals applied to surface binding and the outer side of the colloid is covered by a layer of metal casing used to shield and fix the colloid; the utility model is characterized in that a strip nose extruded downwards is arranged on a position of the surface of the metal casing which corresponds to the bottom side of the electric connector, the nose is capable of forming an equal-height supporting point together with a bottom side of a welding position which has surface binding with the terminals. When the structure is used, that the welding position of the electric connector truly contacts with the tin solder on a circuit board is guaranteed; therefore, when the welding position of the terminals is applied to the surface binding, a bad contact possibility between the bottom side of the welding position and the circuit board caused by a poor planeness of the welding position on the electric connector is reduced.

Description

The structure of electric connector

Technical field

The utility model is the structure of relevant a kind of electric connector, refers to a kind of electronics or the power supply of computer product and electric connector structures of signal port,input-output such as radio telephone, PDA of being used for especially; This electric connector utilizes the structural design of metal-back and when making this electric connector be positioned over the welding processing procedure that carries out surface adhering (SMT) on the circuit board (PCB), the weld part tin cream complete and on the circuit board that can guarantee the terminal rear end contacts, and can avoid contacting or the situation of failure welding produces, and can reach the effect of enhancing productivity and reducing production costs.

Background technology

The at present known electric connector structure that is used for electronic products such as radio telephone, PDA, the welding of itself and circuit board adopts surface adhering (SMT) mode to implement more, uses on the circuit board so that electric connector is fixed on; Therefore, the flatness of electric connector terminal rear end weld part will be one of main key factor of the decision surface adhering processing procedure good and the bad.Yet along with the tin cream thickness in the surface adhering processing procedure reduces gradually because of the consideration that reduces production costs, so more can increase the requirement of electric connector weld part flatness, and then increase the manufacturing of this product and the degree of difficulty in the management and control, remote-effects production efficiency of products and cost.So general known electric connector structure is had necessity of research and development improvement more in fact.

Summary of the invention

The inventor is configured in when being fixed on the circuit board in the surface adhering mode thoughts on known electric connector, the weld part that easily produces the terminal rear end can't the smooth fully tin cream on circuit board, to guarantee the defective of welding quality, so study intensively, and long-pending the individual design of being engaged in this cause and the experience of making for many years, design a kind of structure of electric connector eventually.

Main purpose of the present utility model is to provide a kind of structure of electric connector, it is made combination and finishes an electric connector, has a long strip type strong point of giving prominence to downwards to guarantee the flatness of terminal rear end weld part in its metal-back bottom surface, make when carrying out the welding engineering of surface adhering, can allow maintain excellent contact between the tin cream of the weld part of terminal rear end and circuit board, can reach high efficiency indirectly and reduce cost of manufacture.

In order to achieve the above object, the utility model mainly is in the surperficial appropriate location of metal-back corresponding to this electric connector bottom surface, is provided with an outstanding downwards strip teat, and this teat can form the contour strong point with the weld part bottom surface that terminal is implemented surface adhering.

When the utility model structure uses, be provided with downward teat as a strong point in metal-back bottom surface leading edge, when even the weld part bottom surface of terminal rear end is higher or lower than the bottom line of metal-back trailing edge a little, all can in surface adhering (SMT) processing procedure, suppress this electrical connector body easily, and the surface adhering weld part of guaranteeing this electric connector can be pasted on the circuit board really with its on the tin cream smeared contact fully, can avoid bad because of connector terminals rear end weld part flatness, and cause the terminal weld part to fail situation about contacting with circuit board as known structure.

Description of drawings

Fig. 1: be three-dimensional exploded view of the present utility model

Fig. 2: be to look three-dimensional combination figure in the end of the present utility model

Fig. 3: be side cutaway view of the present utility model

Fig. 4: the side-looking combination view that is known structure

Fig. 5: be that known structure is assembled in the side-looking combination view on the circuit board

Colloid 10

Terminal 20

Metal-back 30

Circuit board 40

Electrical connection section 11

Signal connecting portion 12

Weld part 21

Teat 31

Leading edge 32

Embodiment

At first, see also Fig. 1 to shown in Figure 3, the structure of the utility model electric connector, this electric connector includes the colloid 10 that a power supply connecting portion 11 and a signal connecting portion 12 are combined into one, suitably in this colloid 10 be equiped with one group of terminal 20 that is suitable for surface adhering, this colloid 10 outside, coat and as covering and fixing with a metal-back 30; Its feature exists: this metal-back 30 has an outstanding strip teat 31 downwards on the surface corresponding to this electric connector bottom surface, and this teat 31 can form the contour strong point with weld part 21 bottom surfaces of terminal 20 rear ends execution surface adhering.

As implied above, wherein be made into outstanding strip teat 31 downwards through punching press in metal-back 30 bottom surfaces, be located at this metal-back 30 bottom surface leading edges 32 in the present embodiment, and make this strip teat 31 be parallel to the orientation of terminal 20 rear end weld parts 21.

See also Fig. 4 and shown in Figure 5 again, these are graphic to be the rough schematic of known electric connector, the weld part 21 of terminal 20 rear ends outside this electric connector rear has outstanding colloid 10 and metal-back 30 wherein, yet in this structure, process, so a segment distance X is hanged down in ratio metal-back 30 bottom surfaces that these weld part 21 bottom surfaces all can be designed for the ease of implementing surface adhering (SMT) processing procedure; Cause this electric connector to carry out surface adhering on the circuit board 40 and add man-hour being positioned over, weld part 21 natures of terminal rear end can be upturned and form tilt angle theta (as Fig. 5).According to above-mentioned known structure, it then easily produces terminal 20 rear ends and tin cream on the circuit board 40 with surface adhering (SMT) welding processing the time do not have situation about well contacting, and influence the using character of this product; Again, this is known to be configured to improve above-mentioned problem, all is coated on tin cream thickness on the circuit board with the generation of elimination contact gap with increase at present, will increase surface adhering (SMT) manufacturing cost so again and is not inconsistent economic benefit.

Consult Fig. 1 again to shown in Figure 3, when the utility model structure uses, be provided with downward teat 31 as a strong point in metal-back 30 bottom surface leading edges especially, when even weld part 21 bottom surfaces of terminal 20 rear ends are higher or lower than the bottom line of metal-back 30 trailing edges a little, all can in surface adhering (SMT) processing procedure, suppress this electrical connector body easily, and the surface adhering weld part 21 of guaranteeing this electric connector can be pasted on the circuit board 40 really with its on the tin cream smeared contact fully, can avoid bad because of connector terminals rear end weld part 21 flatnesses, and cause terminal weld part 21 to fail situation about contacting with circuit board 40 as known structure; And the utility model is loose to the relative known structure of ratio of the requirement of wherein terminal 20 rear end weld parts 21 flatnesses, and then also can reduce cost of manufacture and enhance productivity.

Claims

1. the structure of an electric connector, this electric connector includes the colloid that a power supply connecting portion and a signal connecting portion are combined into one, suitably in this colloid be equiped with one group of terminal that is suitable for surface adhering, this colloid outside, coat one as covering and the metal-back of fixing; It is characterized in that:

This metal-back is provided with an outstanding strip teat downwards on the surface corresponding to this electric connector bottom surface, and the weld part bottom surface that surface adhering is implemented in this teat and terminal rear end forms the contour strong point.

2. the structure of electric connector as claimed in claim 1 is characterized in that: described outstanding downwards strip teat, be located at metal-back bottom surface leading edge, and this strip teat is parallel to the orientation of terminal rear end weld part.