Electric connector
[technical field]
The utility model relates to a kind of electric connector, relates in particular to a kind of chip module connection to the electric connector of printed circuit board (PCB).
[background technology]
The electric connector relevant with the utility model in order to be electrically connected chip module and circuit board, announced the 2872630Y patent such as Chinese patent and disclosed.This electric connector comprises insulating body and some conducting terminals that is housed in the insulating body.Conducting terminal comprises stop section and the upwardly extending contact site of autonomous body that main part, autonomous body extend straight down.Insulating body is provided with some terminal accommodation holes and some tin ball accommodation sections that is communicated with terminal accommodation holes, and the sidewall of the stop section of conducting terminal end and tin ball accommodation section forms can movable accommodate the tin ball to wherein receiving space.
Part opening and tin ball that the stop section seals tin ball holding tank contact with the stop section, so, when welding tin ball, the tin ball becomes between liquid tin liquor and conducting terminal and the terminal accommodation holes and has the gap, tin liquor can be climbed to main part along the stop section along with the gap between conducting terminal and the terminal accommodation holes, produce easily siphonage, and then affect the electric connection between electric connector and the circuit board.
In view of above-mentioned condition, necessaryly provide a kind of novel electric connector to solve the defective that exists in the prior art scheme.
[utility model content]
The purpose of this utility model provides a kind of electric connector that can prevent siphonage.
The utility model electric connector is achieved through the following technical solutions: a kind of electric connector, it comprises insulating body, some conducting terminals and some tin balls, described insulating body has end face and bottom surface and the some terminal containing slots that runs through end face and bottom surface that is oppositely arranged, described conducting terminal and described tin ball are housed in the described terminal containing slot, described conducting terminal comprises main part, autonomous body upwards bends the elastic arm of extension and the connecting portion that autonomous body bends extension downwards, it is characterized in that: described connecting portion has the free terminal of butt tin ball, described tin ball integral body at a side of free terminal and free terminal between main part and tin ball.
The utility model further defines: described connecting portion comprises that autonomous body bends the extension of extension downwards and upwards bends the support division that extends from extension, the free terminal outside butt tin ball of described support division, the free terminal of described support division is positioned on the bottom surface of insulating body, has a gap between the end of described support division and the main part.
The utility model further defines: described tin ball bonding connects and becomes liquid tin liquor, and described tin liquor stops to climb at the intersection of support division and extension.
The utility model further defines: described conducting terminal also comprises and extending on the relative side direction of autonomous body and the holding parts of fixed conductive terminals, described terminal containing slot comprises the storage tank of the main part of accommodating conducting terminal and is connected with storage tank and accommodates the holding slot of the holding parts of conducting terminal, described insulating body also comprises the some tin ball holding tanks that run through the bottom surface, described tin ball holding tank stepped and with the common clamping tin of connecting portion ball, described insulating body also comprises the some grooves that run through end face, and described groove and end face are stepped and be interconnected.
The utility model further defines: the elastic arm of described conducting terminal comprises autonomous body upwards and the bending part that extends to a lateral buckling of main part, press section that the opposite side bending from bending part to main part is extended and the self-pressing section contact site that extends of bending upwards, described contact site is provided with the groove that can increase contact stabilization, and described connecting portion is the semi-annular shape setting.
The utility model electric connector is achieved through the following technical solutions: a kind of electric connector, it comprises insulating body, some conducting terminals and some tin balls, insulating body has end face and bottom surface and the some terminal containing slots that runs through end face and bottom surface that is oppositely arranged, described conducting terminal and described tin ball are housed in the terminal containing slot, described conducting terminal comprises main part, autonomous body upwards bends the elastic arm of extension and the connecting portion that autonomous body bends extension downwards, it is characterized in that: the curved setting of described connecting portion, described connecting portion have the bottom surface of the more close insulating body of the centre of sphere of the free terminal of butt tin ball and the outer relative tin ball of tangent line of arc lowermost end.
The utility model further defines: described connecting portion comprises that autonomous body bends the extension of extension downwards and upwards bends the support division that extends from extension, the opposite side that described connecting portion has the inboard of a side direction downward-extension setting of autonomous body and an autonomous body is to the outside that downward-extension arranges, the free terminal outside butt tin ball of described support division, the free terminal of described support division is positioned on the bottom surface of insulating body, has a gap between the end of described support division and the main part.
The utility model further defines: described conducting terminal also comprises and extending on the relative side direction of autonomous body and the holding parts of fixed conductive terminals, described terminal containing slot comprises the storage tank of the main part of accommodating conducting terminal and is connected with storage tank and accommodates the holding slot of the holding parts of conducting terminal, described insulating body also comprises the some tin ball holding tanks that run through the bottom surface, the stepped setting of described tin ball holding tank and with the common clamping tin of connecting portion ball, described insulating body also comprises the some grooves that run through end face, and described groove and end face are stepped and be interconnected.
The utility model further defines: the elastic arm of described conducting terminal comprises autonomous body upwards and the bending part that extends to a lateral buckling of main part, press section that the opposite side bending from bending part to main part is extended and the self-pressing section contact site that extends of bending upwards, and described contact site is provided with the groove that can increase contact stabilization.
The utility model further defines: described connecting portion is the semi-annular shape setting, and described connecting portion has elasticity and when the tin ball was assembled into tin ball holding tank, described support division was with respect to tin ball generation strain.
Compared to prior art, there is following advantage at least in the utility model electric connector: the free terminal butt tin ball of the connecting portion of electric connector, the integral body of tin ball at a side of free terminal and free terminal between main part and tin ball, can make the tin ball away from main part and can prevent that the tin ball from dissolving into after the tin liquor along with connecting portion climbs to main part, and then can prevent siphonage.
[description of drawings]
Fig. 1 is the three-dimensional combination figure of the utility model electric connector.
Fig. 2 is the three-dimensional combination figure of another angle of the utility model electric connector.
Fig. 3 is the three-dimensional exploded view of the utility model electric connector.
Fig. 4 is the three-dimensional exploded view of another angle of the utility model electric connector.
Fig. 5 is that the utility model electric connector is along the cutaway view of A-A direction among Fig. 1.
Fig. 6 is that the tin ball of the utility model electric connector dissolves rear schematic diagram along A-A direction cutaway view among Fig. 1.
[embodiment]
See also Fig. 1 to shown in Figure 6, electric connector 100 is used for being electrically connected chip module (not shown) and circuit board (not shown), and this electric connector 100 comprises insulating body 1, some conducting terminal 2 and some tin balls 3 that is retained in the insulating body 1 that is housed in the insulating body 1.
Please consult Fig. 3 and shown in Figure 4 by emphasis, insulating body 1 roughly is the square type, and it has the end face 10 and bottom surface 11 and some terminal containing slots 12 that runs through end face 10 and bottom surface 11 that is oppositely arranged.Conducting terminal 2 is housed in the terminal containing slot 12, and terminal containing slot 12 comprises storage tank 13 and the holding slot 14 that is connected with storage tank 13.Insulating body 1 also comprises and runs through bottom surface 11 and with the stepped some tin ball holding tanks 15 in bottom surface 11 and run through end face 10 and the groove 16 stepped with end face 10, be interconnected between the groove 16.
Conducting terminal 2 comprise flat main part 20, autonomous body 20 upwards bending extend the elastic arm 21, autonomous body 20 bending downwards that arrange and extend on the relative side direction of the connecting portion 22 that arranges and autonomous body 20 and extend the holding parts 23 that arranges.Main part 20 is housed in the storage tank 13 and conducting terminal 2 is fixed in the holding slot 14 by holding parts 23.Elastic arm 21 comprise autonomous body 20 to a lateral buckling of main part 20 extend the bending part 210 that arranges, opposite side bending from from bending part 210 to main part 20 extend the press section 211 that arranges and self-pressing section 211 upwards bending extend the contact site 212 that arranges.Contact site 212 is provided with groove 213, the stability in the time of can improving chip module and touch contact site 212.Connecting portion 22 has a free terminal 222, and connecting portion 22 has certain thickness and is the semi-annular shape setting, tin ball 3 integral body at a side of free terminal 222 and free terminal 222 between main part 20 and tin ball 3.Connecting portion 22 comprises the extension 223 of autonomous body 20 downward bending extensions and upwards bends the support division 224 that extends from extension 223.Extension 223 and support division 224 all have described inboard 220 and the outside 221.Free terminal 222 is located on the support division 224.Has a gap 225 between the free terminal 222 of connecting portion 22 and the main part 20, so that tin ball 3 is away from main part 20.
See also shown in Figure 5ly, during assembling, conducting terminal 2 is assembled into the terminal containing slot 12 of insulating body 1 from the end face 10 of the body 1 that insulate, and tin ball 3 is assembled into the tin ball holding tank 15 of insulating body 1 from the bottom surface 11 of the body 1 that insulate.After assembling is finished, holding parts 23 is retained in the holding slot 14 and main part 20 is housed in the storage tank 13, the outside 221 of the free terminal 222 of support division 224 contacts and supports tin ball 3 with tin ball 3, and by stair-stepping tin ball holding tank 15 clamping tin balls 3, so that tin ball 3 is fixed on the insulating body 1.Connecting portion 22 has the free terminal 222 of butt tin ball 3, and the bottom surface 11 of the more close insulating body 1 of the centre of sphere of the outer relative tin ball 3 of tangent line of the arc lowermost end of connecting portion 22.Connecting portion 22 has elasticity and when tin ball 3 was assembled into tin ball holding tank 15, described support division 224 with respect to tin ball 3 strain occured.When being soldered to tin ball 3 on the circuit board, 3 welding of tin ball become liquid tin liquor 4, described tin liquor 4 is climbed and is stopped to climb at support division 224 intersection with extension 223 along support division 224, like this tin liquor 4 can not climb conducting terminal 2 main part 20 and can avoid the generation of siphonage.
Should be understood that, the above only is preferred forms of the present utility model, it or not whole execution modes, the variation of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification is claim of the present utility model and contains.