CN2475165Y - Electric connector - Google Patents

Abstract

The utility model is a surface mount electrical connector, the terminal of the electrical connector provides a bending part at least, the terminal, after being bent, provides a flat discoid installation part with a solder ball on the surface, in the process of heating and welding the solder ball on circuit board, the elasticity restrains the solder ball and makes the solder ball on the right welding position, which increases the excellent and good rate of terminal assembly.

Description

Electric connector

The utility model relates to a kind of electric connector structure, refers in particular to a kind of electric connector and is convenient to this electric connector and circuit board generation electric connection in the mode of mounted on surface.

The electronic product of pressing at present is multifarious, its function is different, its appearance and structure are from also ever-changing, electric connector in the electronic product also changes with the change of its appearance and structure, places the shape of conducting terminal of electric connector through hole or structure simultaneously must change can cooperate and reaches the purpose of electrically leading; And electronic product is all towards characteristic compact, that be easy to carry about with one at present, and the thickness of electric connector then influences the thickness of electronic product, so the electric connector of low configuration is the trend of development; The conducting terminal of its cooperation is the requirement that reaches low configuration, highly must attenuating must keep the necessary elasticity that it contacts with electronic component and tin ball again, and the shape of terminal, the affixed position of constructing and inserting in the electric connector through hole are important topic.

Be the electric connector 2 of Taiwan patent announcement No. 389436 " electric connector " and terminal 23 schematic diagrames that use thereof as shown in Figure 1 and Figure 2.Wherein, electric connector 2 places between electronic component 1 and the circuit board 3, the insulation shell 20 of electric connector 2 have from the continuing surface of accepting electronic component 1 to the circuit board approaching face run through through hole 21, insert terminal 23 in the through hole 21, this terminal 23 be shaped as strip, have a fixed part 233 on it and be positioned at the stage casing of strip, fixed part connects the flexible adjustment part 235 of a tall and thin tool for 233 times, be positioned at the through hole exit by 235 bendings, one horizontal circle plate-like junction surface 237, adjustment part again, surface attachment tin ball 25 between junction surface 237 and the circuit board 3, the top of fixed part 233 are extended with contact jaw 231 and electronic component 1 Elastic Contact.As from the foregoing, terminal 23 need be kept flexible contact site 231 and adjustment part 235, be all and certain length of tool just can have suitable elasticity, so its adjustment part 235 is tall and thin in-line, so, 237 whole height is too high to the junction surface from the free end of contact jaw 231 for terminal 23, can't reach the requirement of low configuration electric connector.Therefore, if can lower the height of adjustment part 235, then terminal 23 whole heights are able to comprehensive reduction, and electric connector 2 low configurationizations can be reached, and the compact target that is easy to carry about with one of electronic product realizes all over being not difficult; Also can save the material of making terminal 23.

According to above-mentioned, main purpose of the present utility model is to be to provide a kind of conducting terminal that has elasticity corrective action and low configuration electric connector when welding tin ball;

Of the present utility modelly mainly be to provide a kind of low configuration electric connector, this electric connector places between electronic component and circuit board, and the conducting terminal that the through hole that runs through in the mat electric connector is inserted contacts to reach with electronic component and circuit board and electrically conducts.This terminal construction includes the installation portion that adheres to the tin ball, kink, fixing eh, elastic arm, contact jaw etc.It is characterized in that: a kink is extended by fixed part one end, is connected with an end of installation portion towards installation portion; So be linked to be by fixed part, kink, installation portion and be about the ㄈ font, reduce the height of terminal, and, keep within bounds accompanying tin ball for installation portion because of the bending of kink makes installation portion also can possess enough elasticity.

Relevant the utility model is to reach technological means and the effect thereof that above-mentioned purpose, feature adopt, and exemplifies preferred embodiment now and cooperates graphic being described as follows:

Fig. 1 is for commonly using electric connector and electronic component and circuit board combination schematic diagram.

Fig. 2 is for commonly using the terminal schematic diagram.

Fig. 3 is the utility model first embodiment schematic diagram.

Fig. 4 is the utility model second embodiment schematic diagram.

Fig. 5 is the terminal schematic perspective view that first embodiment uses.

Fig. 6 is the terminal schematic perspective view that second embodiment uses.

Fig. 7 is the utility model the 3rd embodiment schematic diagram.

Fig. 8 is the terminal schematic perspective view that the 3rd embodiment uses.

The icon table of comparisons:

12 electronic components, 121 pins

32 circuit boards

4 electric connectors, 41 insulation shells

43 continuing surfaces, 42 through holes

421 through-hole walls, 45 installed surfaces

5,6 terminals, 51,61,71 fixed parts

510,610,710 traversing sections, 611,711 curved arc sections

612,712 vertical sections, 513,613,713 sides

514,614,714 sides, 55,65,75 kinks

517,617,717,718 interference parts, 7 tin balls

53,63,73 installation portions

57,67,77 elastic arms, 571,671,771 contact jaws

Seeing also Fig. 3 is the utility model first embodiment, is that terminal 5 is assembled in the generalized section in the through hole 42 of electric connector 4, shown in Figure 1 as what commonly use, and electric connector 4 electrically connects with an electronic component 12 and a circuit board 32 respectively in the present embodiment; This electric connector 4 has an insulation shell 41, insulation shell 41 has a continuing surface 43 can accept an electronic component 12, the face relative with this continuing surface 43 is that installed surface 45 can be approaching with a circuit board 32, establish the through hole 42 that plural number runs through between continuing surface 41 and the installed surface 45, respectively this through hole 42 is by being defined around its peripheral wall; A plurality of terminals 5 (seeing also Fig. 5) can insert respectively respectively should correspondence through hole 42 in.

Respectively this terminal 5 has a fixed part 51 that is provided with, this fixed part 51 has a traversing section 510, these traversing section 510 tools, two opposed side edges 513 and 514, in respectively this side 513 and 514 places, can be provided with interference part 517, this interference part 517 is to be sawtooth in present embodiment, hangnail or other fellows, end extension downwards and double flat by this traversing section 510 form a kink 55, the end that kink 55 is not connected with traversing section 510 also laterally extends the below that an installation portion 53 is positioned at traversing section 510, extend upward an elastic arm 57 obliquely again by traversing section 510 other ends, the free end of this elastic arm 57 is a contact guide end 571.

When terminal 5 places through hole 42, traversing section 510 nearly installed surfaces 45 exits of fixed part 51, and horizontal stroke is mutually in this through hole 42, the limit, two opposite sides 513 of traversing section 510 and 514 interference part 517 produce interference with the wall of through hole 42, this installation portion 53 is positioned at the exit of through hole 42 at installed surface 45, and the wall with through hole 42 does not contact; Fixed part 51 mat traversing sections 510 located lateral are in through hole 42, can reduce the whole height of terminal 5, traversing section 510, kink 55,53 one-tenth one ㄈ shapes of installation portion in the present embodiment because the elasticity that kink 55 stressed bendings are accumulated, make the installation portion 53 when needed can elastic displacement; Elastic arm 57 tilts with respect to this traversing section 510, and so, contact lead segment 571 is kept a distance with the wall of through hole 42, inserts with the pin 121 that holds electronic component 12.

When desire is electrically connected at electric connector 4 on the circuit board 32, but the technology of mat mounted on surface (SMT), so as shown in Figure 3, tin ball 7 can known technology be planted on the approaching one side of this installation portion 53 and this circuit board 32, and kept within bounds by the elasticity of this installation portion 53.

By this, the traversing section 510 of the fixed part 51 of this terminal 5 is to be positioned in the through hole 42 with horizontal direction, abandons the directly mode in being positioned through hole of known terminal, thereby lowers a height of terminal 5; Moreover, the connection portion 53 of 55 one-tenth ㄈ shapes of kink, make installation portion 53 also be positioned at the horizontal direction of through hole, it reduces the height of terminal 5 once more because of bending again and does not lose the function that its elasticity is adjusted, and the tall and thin in-line adjustment part 235 that stands in the through hole of the known techniques of sublating (seeing also Fig. 1,2) occupies the shortcoming of terminal height in rain; Even mutually in the exit of through hole 42, its tin liquor is difficult for entering in the through hole 42 and improves the electric connector quality electric connector 4 of the present utility model when tin ball 7 is heated welding by installation portion 53 and traversing section 510 dual horizontal strokes; Again, this kink 55 provides the elasticity of these installation portion 53 necessity, makes these installation portion 53 elasticity keep within bounds accompanying tin ball 7 and follows with these circuit board 32 elasticity all the time in the heating welding process.

See also Fig. 4 and Fig. 6 again, it is the utility model second embodiment, employed in the present embodiment terminal 6, this terminal 6 is made up of a vertical section 612 with respect to being changed at this fixed part 61 of the first embodiment terminal 5, wherein one of this vertical section 612 relative dual- side 615 and 616 is established interference part 617, this interference part 617 is to be sawtooth in present embodiment, hangnail or other fellows, these terminal 6 all the other corresponding parts are identical with terminal 5, in these terminal 6 receiving through-holes 42, the through-hole wall that is close with vertical section 612 is 421, these vertical section 612 2 relative sides 615 and 616 are adjacent wall and form interference, interfere the resiliency supported of locating and elastic arm 67 being provided so that terminal 6 fixed parts 61 to be provided in through hole 42; Again, after this vertical section 612 is positioned in the through hole 42, provide an elasticity, make the traversing section 610, kink 65 and the installation portion 63 that connect in regular turn have better elasticity to keep within bounds tin ball 7 between the curved arc section 611 of this vertical section 612 and this traversing section 610.

By this, the plane of structure 610 of this terminal 6 is laterally to be arranged in through hole 42, the shape of 63 one-tenth ㄈ shapes of kink 65 connection portions of mat 180 degree, make installation portion 63 also be positioned at the horizontal direction of through hole, mutually in the exit of through hole 42, its tin liquor is difficult for entering in the through hole 42 and improves the electric connector quality when tin ball 7 is heated welding by this traversing section 610 and installation portion 63 dual horizontal strokes; This kink 65 and this curved arc section 611 provide the elasticity of these installation portion 63 dual necessity to adjust merit, making these installation portion 63 elasticity keep within bounds accompanying tin ball 7 follows with these circuit board 32 elasticity in the heating welding process all the time, and the height that reduces terminal 6 because of bending does not lose the function that its elasticity is adjusted again, and the tall and thin in-line adjustment part 235 that stands in the through hole of the known techniques of sublating (seeing also Fig. 1,2) occupies the shortcoming of terminal height in rain.

The 3rd embodiment of the present utility model as shown in Figures 7 and 8, according to comprehensive first embodiment and second embodiment, two opposed side edges 713 and 714 with the traversing section 710 of this fixed part, and two relative dual-sides 715 and 716 of vertical section 712, each all establishes interference part 717 and 718 respectively, this interference part 717 and 718 is all interfered with adjacent through hole wall formation, remainder is still identical with first and second embodiment, this traversing section 710 and 712 dual the fixing of this vertical section, make terminal 7 more secure among through hole, similarly, except that traversing section 710 horizontal strokes more in through hole, the shape of 73 one-tenth ㄈ shapes of kink 75 connection portions of 180 degree, make installation portion 73 also be positioned at the horizontal direction of through hole, mutually in the exit of through hole 42, its tin liquor is difficult for entering in the through hole 42 and improves the electric connector quality when tin ball 7 is heated welding by this traversing section 710 and installation portion 73 dual horizontal strokes; This kink 75 provides elasticity to make these installation portion 73 elasticity keep within bounds accompanying tin ball 7 and follows with these circuit board 32 elasticity all the time in the heating welding process, and the height that reduces terminal 7 because of bending does not lose the function that its elasticity is adjusted again, and the tall and thin in-line adjustment part 235 that stands in the through hole of the known techniques of sublating (seeing also Fig. 1,2) occupies the shortcoming of terminal height in rain.

In sum, the utility model really can the above-mentioned disclosed structure of mat, reaches its intended purposes and effect, and does not see the also unexposed use of publication before the application, meets on the industry of novel patent important document such as to utilize, novel, progressive.

Only, above-mentioned graphic and explanation of taking off only is embodiment of the present utility model, and is non-for limiting enforcement of the present utility model; Generally be familiar with the personage of this skill, it complies with feature category of the present utility model, and other equivalences of being done change or modify, and all should be encompassed in the claim of following this case.

Claims (6)

1. electric connector can be accepted an electronic component and mat tin ball and electrically connects with a circuit board, it is characterized in that comprising:

One insulation shell, this insulation shell has a continuing surface, and accepting this electronic component, an installed surface is corresponding with this continuing surface and near this circuit board, have a plurality of through holes that run through from this continuing surface to this installed surface, respectively this through hole is by being defined around its peripheral wall; A plurality of terminals, placing respectively should the correspondence through hole, and respectively this terminal has:

One fixed part, this fixed part can form with the through hole wall interferes, and this terminal is fixed among the through hole;

At least one kink, by an end of this fixed part to this installed surface bending;

One installation portion is to be extended towards installed surface by the end that this kink is not connected with this fixed part to form;

One elastic arm, this elastic arm is extended to this continuing surface by the other end of this fixed part, and the free end of this elastic arm is a contact guide end, contacts with the pin of this electronic component;

One tin ball places between this installation portion and this circuit board, and is attached to the surface of this installation portion;

This elastic bending part provides the elasticity of this installation portion necessity by this, makes this installation portion elasticity keep within bounds accompanying tin ball and follows with this circuit board elasticity all the time in the heating welding process.

2. electric connector as claimed in claim 1 is characterized in that, fixed part and this installed surface also are separated by horizontal stroke mutually in through hole, form a ㄈ font by this fixed part, this bending segment and this installation portion.

3. electric connector as claimed in claim 1 is characterized in that fixed part is made up of a traversing section, and an end of this traversing section links to each other with this kink and also is separated by horizontal stroke mutually in through hole with this installed surface.

4. electric connector as claimed in claim 3 is characterized in that, this fixed part forms interference by this traversing section and this through hole wall, makes this terminal crosswise fixed in this through hole.

5. electric connector as claimed in claim 1 is characterized in that, this fixed part is to be a vertical section, and this vertical section and this through hole wall form interferes, and this kink is that a curved arc section connects behind this vertical section horizontal stroke and bends with this installation portion in this through hole mutually again and link to each other.

6. electric connector as claimed in claim 1 is characterized in that, this fixed part is to comprise a traversing section and a vertical section, and this traversing section and this vertical section all form with this through hole wall interferes.

Images