Background technology
a kind of bayonet connector that uses in the market, in order to dock electronic cards to a circuit board, it comprises a body, described body is the lengthwise shape, the front end face of described body is provided with a slot, plant for described electronic cards, the rear end face of described body is concaved with a plurality of accepting grooves forward, a plurality of terminals are installed in respectively in described accepting groove, each described terminal has a base portion and is held in described accepting groove, described base portion extends upward a contact site and enters described slot in order to be electrically connected with described electronic cards, described base portion extends forward a holding section, in order to mutually to hold with described body, the described base portion bottom a junction that extends back, be contained in described accepting groove, end by described connecting portion forms a weld part and described welding circuit board again.
Existing electric connector; be revealed in described body surface for fear of described terminal; to protect described terminal structure not collided by foreign object; therefore between described weld part and described base portion, a junction is set; make outside the described weld part of described connecting portion end is exposed to, to realize being connected between described electric connector and outside described circuit board.
Owing to having described connecting portion between described base portion and described weld part, during assembling, need described holding section, described base portion and described body phase clasp, make described terminal fixing in described accepting groove, and described connecting portion is held in described accepting groove diapire this moment, cause described diapire to react on described connecting portion, make the described connecting portion warpage that makes progress, thereby described weld part is upturned, cause that described weld part is crooked, off normal, even distortion, deformity, the phenomenon of empty weldering even appears in the flatness when affecting described weld part and welding on circuit board.
Therefore, be necessary to design a kind of novel electric connector, to overcome the problems referred to above.
Summary of the invention
The purpose of this utility model is to provide a kind of electric connector with better welding flatness.
For achieving the above object, the utility model is by the following technical solutions:
A kind of electric connector comprises: a body, be arranged with backward a slot from described body front end face, and one first accepting groove is offered forward from the rear end face of described body; One the first terminal is contained in described the first accepting groove, it has one first base portion, described the first base portion extends forward one first contact site, described the first contact site is revealed in described slot, described the first base portion a junction that extends back only is contained in described the first accepting groove Inner, described connecting portion and described the first accepting groove diapire have a gap, and one first weld part bends backward and stretches out described body from described connecting portion.
Further, the width in described gap is greater than dimensional tolerance and the described first base portion dimensional tolerance accumulative total sum of described the first accepting groove.
Further, described connecting portion bends extension backward from described the first base portion, and is and is horizontally disposed with.
Further, protrude out forward one first holding parts from described the first base portion, be immobilizated in described the first accepting groove, and described the first holding parts is arranged at the back lower place of described the first contact site, one material section of company is convexly equipped with backward from described the first base portion, and material section of described company is in order to connect a strip in the process of described the first terminal moulding.
Further, be provided with a support division in described the first accepting groove, described the first base portion is vertical setting from top to bottom, and is held in described support division, prevents that described the first terminal from moving forward and backward.。
Further, has a jube between every two adjacent described the first accepting grooves, the described jube off normal when preventing the welding of described the first terminal that matches with described the first terminal.
Further, the described jube two relative side groove that sets to the concave respectively, described groove can strengthen the die of making body die.
Further, offer backward a plurality of the second accepting grooves from the front end face of described body, a plurality of the second terminals are installed in described the second accepting groove, and shift to install on the longitudinally of described body with described the first terminal.
Further, further be arranged with forward one from described rear end face and escape hopper, the described hopper of escaping is across described the first accepting groove and communicates with described the first accepting groove.
Further, a slot to make way, corresponding described the first weld part place upwards is arranged with from described body lower surface, and is communicated with described the first accepting groove, and is upwards unsteady to prevent described the first weld part.
compared with prior art, described first base portion of electric connector described in the utility model bends extension a junction backward, described connecting portion only is contained in described the first accepting groove Inner, described connecting portion lower surface and described the first accepting groove diapire have a gap, one first weld part, bend backward and stretch out described body from described connecting portion, when described the first terminal inserts in described body, described the first base portion and described the first holding parts are immobilizated in described the first terminal in described body, described gap separates described connecting portion and described the first accepting groove diapire, prevent that described connecting portion is held in described the first accepting groove diapire, efficiently solve the described connecting portion warpage that makes progress, and then affect described the first weld part and be upturned, cause described the first weld part crooked, off normal, even distortion, the problems such as deformity.Described the first weld part is welded on the default solder joint of circuit board accurately.
The drawing reference numeral explanation of embodiment:
Body |
1 |
Groove |
1201 |
Connecting portion |
26 |
Front end face |
102 |
Escape hopper |
121 |
The first weld part |
27 |
Rear end face |
103 |
Slot to make way |
122 |
The second terminal |
3 |
Upper wall |
104 |
The first terminal |
2 |
The second contact site |
31 |
Lower wall |
105 |
The first base portion |
21 |
The second weld part |
32 |
Slot |
106 |
The first holding parts |
22 |
Circuit board |
4 |
The first accepting groove |
107 |
Hangnail |
221 |
Electronic cards |
5 |
The butting section |
1071 |
Material section of company |
23 |
The gap |
? D |
Diapire |
1072 |
The first elastic arm |
24 |
Jube |
120 |
The second accepting groove |
108 |
The first contact site |
25 |
Cusp |
251 |
Embodiment]
For ease of better understanding the purpose of this utility model, structure, feature and effect etc., existing the utility model is described in further detail with embodiment by reference to the accompanying drawings.
Please refer to Fig. 1, Fig. 2 and Fig. 4, the utility model is a kind of bayonet connector, and in order to dock electronic cards 5 to one circuit boards 4, it comprises a body 1, a plurality of the first terminal 2, a plurality of the second terminal 3.
Please refer to Fig. 3, Fig. 4 and Fig. 5, described body 1 is longitudinal, and it comprises front end face 102, one rear end face 103, one upper wall 104, one lower walls 105.described front end face 102 and described rear end face 103 are oppositely arranged, be arranged with backward a slot 106 from described front end face 102, described slot 106 extends along longitudinally, described upper wall 104 is provided with a plurality of the first accepting grooves 107, furtherly, described the first accepting groove 107 offers forward to accommodate described the first terminal 2 from described rear end face 103, and described the first accepting groove 107 is communicated with the top of described slot 106, each described first accepting groove 107 has a butting section 1071 and a diapire 1072, described butting section 1071 is positioned at the rear of described slot 106, described diapire 1072 is a face that tilts down, a side of described diapire 1072 close described butting sections 1071 is higher than the side away from described butting section 1071 furtherly, make described the first accepting groove 107 openings increase gradually, certainly, described diapire 1072 also can be and is horizontally disposed with, has a jube 120 between two adjacent described the first accepting grooves 107, the two relative side of described jube 120 groove 1201 that sets to the concave respectively, the withdrawing power that die when the setting of described groove 1201 has reduced plastic rubber shaping (not shown) is suffered, strengthened the forming ability of die, be conducive to plastic rubber shaping, increased the durability of mould (not shown), be convenient to separating of plastic cement and mould after moulding.
Please refer to Fig. 2, Fig. 3 and Fig. 4, be provided with one between described upper wall 104 and described lower wall 105 and escape hopper 121, the described hopper 121 of escaping extends along longitudinally, the described hopper 121 of escaping is arranged with forward and is across described the first accepting groove 107 from described rear end face 103, and the described hopper 121 of escaping is connected with described the first accepting groove 107.A slot to make way 122 upwards caves in from the bottom surface of the described lower wall 105 of described body 1, and described slot to make way 122 is positioned at described rear end face 103 places, namely the rear edge at described lower wall 105 upwards is arranged with described slot to make way 122, to prevent that described the first terminal 2 from upwards floating, described lower wall 105 is provided with a plurality of the second accepting grooves 108, described the second accepting groove 108 is offered backward from described front end face 102, and in order to accommodating described the second terminal 3, and described the second accepting groove 108 is communicated with the bottom of described slot 106.
Please refer to Fig. 1 and Fig. 4, described the first terminal 2 is contained in described the first accepting groove 107, each described the first terminal 2 has one first base portion 21 and is resisted against on the described butting section 1071 of described the first accepting groove 107, described the first base portion 21 extends in above-below direction, be that described the first base portion 21 is vertical setting, one first holding parts 22 protrudes out forward from described the first base portion 21, be that described the first holding parts 21 is in fore-and-aft direction and is horizontally disposed with, described the first holding parts 22 and described the first base portion 21 coordinate common fixing described the first terminal 2 with described body 1.At least one hangnail 221 projects upwards from described the first holding parts 22 upper surfaces, and described hangnail 221 and described body 1 interference engagement are to strengthen fixing effect.One material section 23 of company is convexly equipped with backward from described the first base portion 21, and is positioned at the described spatial dimension of escaping hopper 121, and material section 23 of described company is in order to connect a strip in the process of described the first terminal 2 moulding.one first elastic arm 24 bends forward from described the first base portion 21 and extends and stretch into described slot 106, and described the first elastic arm 24 is compared described the first holding parts 22, the position of described the first elastic arm 24 is above described the first holding parts 22, it is the front upper place that described the first elastic arm 24 is positioned at described the first holding parts 22, described the first elastic arm 24 ends have one first contact site 25, it is the front upper place that described the first contact site 25 is positioned at described the first holding parts 22, described the first contact site 25 is revealed in described slot 106, described the first contact site 25 is provided with a cusp 251, when the described electronic cards 5 of docking, described cusp 251 is in order to strike off the oxide layer on described electronic cards 5 surfaces.
please refer to Fig. 3 and Fig. 4, a junction 26 bends extension backward from described the first base portion 21, described connecting portion 26 is and is horizontally disposed with and only is contained in described the first accepting groove 107, furtherly, described connecting portion 26 is contained in described the first accepting groove 107 fully, when described connecting portion 26 during in the upper projection of the sidewall (not shown) of described the first accepting groove 107, the whole projections of described connecting portion 26 are on described sidewall (not shown), exactly, the subpoint of described connecting portion 26 ends is arranged in described the first accepting groove 107, certainly, the subpoint of described connecting portion 26 ends also can just in time be positioned on described rear end face 103, has a clearance D between described connecting portion 26 lower surfaces and described diapire 1072, there is dimensional tolerance during fabrication in described the first terminal 2, therefore also there is dimensional tolerance in described the first base portion 21, also inevitably there is dimensional tolerance in described the first accepting groove 107, the width of described clearance D greater than the tolerance value of the tolerance value of described the first base portion 21 and described the first accepting groove 107 and.Described clearance D makes described connecting portion 26 separate with described diapire 1072, prevents that described connecting portion 26 is held in described diapire 1072.From described connecting portion 26 backward and bending downwards extend one first weld part 27, described the first weld part 27 stretches out in described body 1 and is welded on described circuit board 4 in the mode of surface soldered.
Please refer to Fig. 4 and Fig. 5, described the second terminal 3 is contained in described the second accepting groove 108, each described second terminal 3 has one second contact site 31 and is revealed in described slot 106, described the second contact site 31 extends back one second weld part 32 in order to be soldered to described circuit board 4, and described the second contact site 31 is positioned at the below of described the first contact site 25, so that described the first terminal 2, described the second terminal 3 are in the described electronic cards 5 of the sandwich up and down of described electronic cards 5.
Please refer to Fig. 1, Fig. 2 and Fig. 5, during assembling, first a plurality of described the first terminals 2 are inserted in forward in described the first accepting groove 107 from described rear end face 103, make described the first base portion 21 be resisted against described butting section 1071, described the first holding parts 22 is immobilizated in described the first accepting groove 107, described the first contact site 25 is revealed in described slot 106, described connecting portion 26 is positioned at described the first accepting groove 107 and maintains a described clearance D with the described diapire 1072 of described the first accepting groove 107, and described the first weld part 27 stretches out described body 1.Again a plurality of described the second terminals 3 are inserted in described the second accepting groove 108 backward from described front end face 102, described the second contact site 31 is shifted to install at longitudinally with described the first contact site 25, and described the second contact site 31 is positioned at the below of described the first contact site 25, described the second terminal 3 and described the first terminal 2 Heterogeneous Permutation on longitudinally, described the first weld part 27 and described the second weld part 32 Heterogeneous Permutation on longitudinally.
During use, first described electric connector is placed on described circuit board 4, make described the first weld part 27 and described the second weld part 32 be welded in described circuit board 4, more described electronic cards 5 is inserted in described slot 106, to realize the conducting between described electronic cards 5 and described circuit board 4.
In sum, the utility model electric connector has following beneficial effect:
(1) described connecting portion 26 lower surfaces and described diapire 1072 have described clearance D, described clearance D makes described connecting portion 26 separate with described diapire 1072, prevent that described connecting portion 26 is held in described diapire 1072, improved the flatness of all described the first weld parts 27, described the first weld part 27 is welded on the default solder joint of described circuit board 4 exactly, guaranteed welding quality, relative prior art, efficiently solving described the first weld part 27 is upturned, cause that described the first weld part 27 is crooked, off normal, the even problem such as distortion, deformity.
(2) the described diapire 1072 of described the first accepting groove 107 is a diapire that tilts down, make described the first accepting groove 107 openings larger, when described the first terminal 2 by backward front insertion in described the first accepting groove 107 time, the bootable described the first terminal 2 of this described inclination diapire down enters described the first accepting groove 107, avoid described the first terminal 2 to bump with described diapire 1072, the setting of described clearance D simultaneously, having the bit space of allowing when also making described the first terminal 2 enter described the first accepting groove 107 avoids described the first terminal 2 to bump with described diapire 1072.
(3) the described hopper 121 of escaping of lengthwise type is across described the first accepting groove 107 and communicates with described the first accepting groove 107, material section 23 of described company is positioned at the described hopper 121 of escaping, this moment, the described hopper 121 of escaping provided enough spaces for cutting described strip and described the first terminal 2, was convenient to described strip and separated with material section 23 of described company.
Upper detailed description is only the explanation of the preferred embodiment of the utility model, and is non-so limit to the scope of the claims of the present utility model, so the equivalence techniques that all this creation of utilization specifications and diagramatic content are done changes, and all is contained in the scope of the claims of the present utility model.