CN207677114U - High small table surface-mounted elastic sheet - Google Patents

Abstract

A kind of high small table surface-mounted elastic sheet, including：For being surface mounted to the construction section of circuit board；Plateau body section has lower edge, top edge and connection top edge and lower edge and left side edge and right side edge parallel to each other；Bending extends from the compression zone that the elastic arm section of plateau body section top edge is formed far from plateau body section；It is a pair of it is parallel to each other encircle section, it is each to encircle section all there is high ora terminalis and welding ora terminalis；And one adsorption section be bending from encircling the high ora terminalis of one of section; and it is parallel to construction section extension; and extend to aforementioned another aforementioned high ora terminalis for encircling section; and elastic arm section compression zone is exposed under non-stress above adsorption section; and when the compression of the compression zone of elastic arm section is moved to less than adsorption section, by adsorption section and section support protection can be encircled.

Description

High small table surface-mounted elastic sheet

Technical field

A kind of surface-mounted elastic sheet, it is especially a kind of that there is high desk-top microscopic surfaces mounting elastic sheet.

Background technology

Shrapnel used in electronics industry be with such as beryllium copper, phosphor bronze, stainless steel and other metal materials by punching press, bending and Heat-shaping and etc. be made, then with surface installation (Surface-mount technology, SMT) technology be fixedly welded on one On circuit board, by the metal material of shrapnel itself via elastic-restoring force possessed by bending, as leading between circuit element Electrical contact, transmitting signals are used with mechanical elastic offer compression buffering.Since electronic device is gradually miniaturized, on circuit board The welded gasket area planned is also required to reduce.As shown in Figure 1, shrapnel 9 is when being pressurized in the past, elastic arm 90 and adsorption section 92 Often on the one hand meeting stress is compressed downwards, and another aspect then can be shown in dotted line, topples over towards schema is left back along arcuate directions, makes It obtains on circuit board in addition to script is for the length L of welding, it is also necessary to additionally reserve some and elastic arm 90 and adsorption section 92 is allowed to fall backward Stroke space, therefore the anterior-posterior length actually occupied on circuit boards will by indicate originally L elongation be L '.

In addition, general shrapnel damages to protect elastic arm not pressed excessively easily, structure also as shown in Figure 2 is set Meter, allows the left and right sides of welding section 96 to be folded upward at extension, constitutes two side walls 94 generally parallel to each other, if elastic arm 90 It is excessively pushed, partial pressure is just shared by upright side wall 94, increases whole structural strength.However, from welding section 96 to The side wall 94 of upper extension when being pressurized, still skew damage the problem of, and after skewing, can also interfere the left and right sides on circuit board Other elements.Therefore, in the preceding case, just some is up and down in addition to bending except originally for elastic arm 90, and also additional designs have left and right two The shell foot 98 bent again is extended downwardly after a lateral bending, it is ensured that the structure that 90 stress of elastic arm pushes is hardly damaged.Though this structure The probability that elastic arm 90 damages so is reduced, but considers shrapnel specification common at present, general so-called 0402 standard size, just It is the 0.04 English inch of length of bonding area, 0.02 English inch of width, it is respectively trivial 1 millimeter long, 0.5 mm wide model to be changed to metric system It encloses.The bending of multiple and different angles is carried out in such microsize, the design of simple mold is with regard to extremely difficult, as a result, not only Influence the output efficiency of product, product yield can also decrease, cost thus increase.

On the one hand, it is the demand in response to above-mentioned area reduction, No. M309838 " elastic piece structure of TaiWan, China new patent Improvement " disclosed in shrapnel 9, as shown in figure 3, be with a belt metal material bending shape one it is underlying padded Portion 91 and an elastic arm portion 93 being located above make shrapnel 9 high and only top elastic arm portion 93 is set to elastic shape by frame Become.Wherein, padded portion 91 surrounds out one jointly from folding end 910, linkage section 912, abutment end 911 and another linkage section 913 A rectangular frame pedestal.And elastic arm portion 93 is then since linkage section 912, the second bent area 935, support end are extended in bending 934 and first bent area 933 S shapes warpage repeatedly, and bend out the fixing end 932 at top, last back bending goes out to obstruct end It blocks in 931 front.

Since the padded portion 91 of lower section is only single-store frame, when being acted on by top pressure, support protecting effect is limited, Especially under the trend that shrapnel is integrally miniaturized, after the bed-plate dimension of shrapnel is contracted to such as above-mentioned 0402 specification, bottom surface Length only has about 1.0mm and 0.5mm with width, and shrapnel whole height then has the different sizes such as 1.5 to 3.5mm, whole machinery Intensity obviously glides, and upright linkage section 912 and 913 height ratio of another linkage section are higher, when which is pressurized, upright company The problem of connecing section 912 and 913 permanent deformation of another linkage section damage is more serious, causes shrapnel 9 that cannot remain good pre- for a long time Phase performance.

Another aspect, the purpose that elastic arm portion 93 is arranged be exactly using its elastic resilience, make it easy to elastic deformation originally and Rigidity it is bad, and its width only have such as 0.5mm wide, between fixing end 932 and padded portion 91, will also pass through the second bent area 935, The equal many places bending in first bent area 933, manufacturing tolerance can be progressively amplified in bending, and shrapnel 9 in being put into material strip when storing It is biased to be also possible to a little drop slightly put again.Therefore, in finally carrying out the suction process of surface installation, it is easy to have Such as millesimal shrapnel, can because the position of fixing end 932 is relatively low or higher, cause the absorption of suction nozzle insufficient or under press through The factors such as degree, and fallen during being taken out in by material strip so that for this shrapnel in surface mounting technology flow, generation must The puzzlement of processing must be shut down.

Therefore, how to allow the padded partial structure of lower section to be stablized, smoothly reduce shrapnel in area occupied on circuit board； And ideal adsorption section can be provided in adsorption process, it reduces and adsorbs probability that is bad and falling, improve output efficiency with profit It is installed in automation surface；Good predetermined structure can be kept again, to provide good conductive contact, signal transmits or with machine Tool elastic force provides the effect of be pressurized buffering and support protection, especially can be according between circuit board and opposite circuit board or element Away from and provide the product of various height, have using elasticity, will be the desired solution emphasis of the utility model.

Utility model content

The one of the utility model is designed to provide a kind of high small table surface installation bullet of lower section plateau stable structure Piece meets micromation demand with the mounting area of circuit board occupied by saving.

The another object of the utility model is to provide a kind of high small table surface installation bullet of adsorption section stable structure Piece falls probability when reducing absorption, promotes the output efficiency of surface installation.

The further object of the utility model is to provide a kind of high small table surface installation for having and encircling protection structure Shrapnel, structure safety of the protection elastic arm section when bearing excess pressure, it is ensured that properties of product are unlikely to deform.

A further object of the utility model, which is to provide a kind of construction section and encircles between section, has the plateau for climbing tin spacing The type that declines surface-mounted elastic sheet, structure safety when protection shrapnel is by lateral forces, it is ensured that product is not easy de- from installation surface It falls.

It is for being surface mounted to a circuit according to a kind of high small table surface-mounted elastic sheet that above-mentioned the utility model discloses Plate, the surface-mounted elastic sheet include：One confession is surface mounted to the construction section of foregoing circuit plate；One plateau body section, has One be folded upward at by above-mentioned construction section the lower edge of extension, one in contrast to the top edge of the lower edge and connection it is aforementioned Top edge and aforementioned lower edge and a left side edge parallel to each other and a right side edge；One bending extends from aforementioned height The elastic arm section of the aforementioned top edge of platform body section, there are one be higher than above-mentioned plateau far from the formation of aforementioned plateau body section for aforementioned elastic arm section The compression zone of body section；A pair is bent respectively by aforementioned left side edge and aforementioned right side edge and what is extended parallel to each other encircles Section, it is each it is aforementioned encircle section all have there are one high ora terminalis and one in contrast to aforementioned high ora terminalis welding ora terminalis；And an adsorption section, it is curved Folding from aforementioned encircles the aforementioned high ora terminalis of one of section, and is parallel to above-mentioned construction section and extends, and to it is aforementioned it is another encircle section before It states high ora terminalis extension and aforementioned elastic arm section compression zone is exposed under non-stress above above-mentioned adsorption section, and is current The compression zone compression of elastic arm section is stated when being moved to less than preceding adsorption section, by preceding adsorption section and aforementioned section support can be encircled and protects Shield.

By the revealed high small table surface-mounted elastic sheet of the utility model, by the difference of above-mentioned plateau body section Height designs, and the shrapnel of different height size can be manufactured according to customer demand, has using elasticity；And by encircle section and Aforementioned elastic arm section is protected in adsorption section support, unlikely when the compression zone compression of aforementioned elastic arm section being made to be moved to less than preceding adsorption section In being deformed easily because of compression；The cooperation of plateau body section encircles section and stablizes erection so that the shrapnel of micromation still has firm Basis more occupies smaller mounting area, reaches micromation purpose；Especially adsorption section encircles section by one and simply bends extension, and It is supported by another section of encircling, when suction nozzle absorption being allowed to move, without a large amount of tolerances or the problem of the shrinking back that be pressurized, reduces absorption and fall Rate solves the above problems at one stroke.

Description of the drawings

Fig. 1 is a kind of stereoscopic schematic diagram of known technology.

Fig. 2 is the stereoscopic schematic diagram of another known technology.

Fig. 3 is the stereoscopic schematic diagram of another known technology again.

Fig. 4 is the stereogram of high the first preferred embodiment of small table surface-mounted elastic sheet of the utility model.

Fig. 5 is the right side view of Fig. 4 embodiments.

Fig. 6 is the front view of Fig. 4 embodiments.

Fig. 7 is the stereogram of high the second preferred embodiment of small table surface-mounted elastic sheet of the utility model.

Fig. 8 is the right part of flg of Fig. 7 embodiments.

Fig. 9 is the front view after Fig. 7 embodiments are soldered on circuit board.

Figure 10 is the stereoscopic schematic diagram of the high small table surface-mounted elastic sheet third preferred embodiment of the utility model.

Symbol description

1,1 ' plateau body section of construction section, 2,2 ' lower edge 20

22 left side edge of top edge, 24 right side edge 26

3,3 ', 3 " compression zone of elastic arm section, 30,30 " contact jaw 32

Encircle 4,4 ', 4 " high ora terminalis 40,40 ', 40 " of section

44 ' adsorption section of anti-hook end, 5,5 ', 5 " secondary segment 50 "

Weld 42,42 ' shell foot of ora terminalis, 98 shrapnel 9

90 padded portion of elastic arm, 91 folding end 910

911 linkage section of abutment end, 912 another linkage section 913

92 elastic arm portion 93 of adsorption section

Obstruct 931 fixing end of end, 932 first bent area 933

934 second bent area 935 of support end

94 welding section of side wall, 96 length L, L '

Specific implementation mode

Aforementioned and other technology contents, feature and effect in relation to the utility model, in following collocation Figure of description The detailed description of preferred embodiment can be clearly presented, and identical element is indicated with similar label in each embodiment.

A kind of first preferred embodiment of high small table surface-mounted elastic sheet of the utility model, as shown in Figures 4 to 6, Including：One the plateau body section 2, one of construction section 1, one elastic arm section 3, a pair encircle section 4 and an adsorption section 5, for ease of Understand, four edges of the plateau body section 2 lower edge 20 is respectively defined as, in contrast to the top edge of aforementioned lower edge 20 in this 22 and link the left side edge 24 and right side edge 26 of the top edge 22 and the lower edge 20.

Wherein, positioned at the construction section of bottom 1 be for being fixedly welded on circuit board, and it is upward by one side of construction section 1 The lower edge 20 of plateau body section 2 is bowed out, then by opposite top edge 22, elastic arm section 3 is extended in bending, and elastic arm section 3 exists Part far from aforementioned plateau body section 2, there are one the compression zones 30 projected upwards for formation, and the compression zone 30 is higher than aforementioned height Platform body section 2；A pair is bent out by above-mentioned left side edge 24 and above-mentioned right side edge 26 respectively and encircles section 4, each encircles section 4 Top edge be defined as high ora terminalis 40, bottom is then known as welding ora terminalis 42 in contrast to high ora terminalis 40.Section 4 is encircled on the left of Fig. 4 High ora terminalis 40 be bent to form an adsorption section 5 to the right, due to this adsorption section 5 be parallel to 1 direction of above-mentioned construction section extend, Installation suction in surface can be provided.

The compression zone 30 of elastic arm section 3 is exposed to the top of above-mentioned adsorption section 5, and the compression zone under non-stress 30 end sections far from elastic arm section 3 be disappear in both sides encircle section 4 between, prevent the free end by other foreign objects hook draw become The possibility of shape.Another aspect, since the section 4 of encircling of both sides extends parallel to each other, in addition aforementioned plateau body section 2 can form three face rings Around form, and the bottom of three all be soldered on circuit boards, can framework go out a solid foundation, thereby promoted in by Support force under pressure condition, therefore when aforementioned compression zone 30 is pressurized and is moved to less than preceding adsorption section 5 downwards, aforementioned elastic arm section The 3 high ora terminalis 40 that section 4 can be encircled by the adsorption section 5 and two are supported, and are increased the support for shrapnel and are protected, thereby make bullet Piece is unlikely to deform, and can maintain effect for a long time.

To keep the electrical contact that compression zone 30 and top push good, there are one what is dashed forward on arc to connect for the also projection of compression zone 30 The arcuation shift motion of contravention 32, and in this example in 30 downward retraction process of compression zone, the elastic arm section 3 will not all fall backward and More than plateau body section 2 so that the utility model shrapnel on circuit boards, falls after will not being pushed because of elastic arm section and influences surrounding Element, save occupied mounting area, allow other spaces on circuit board that can allow other elements Flexible use completely, reach To the target requirement for meeting micromation.

Such as it is familiar with that the art personage is readily appreciated, though the section of encircling in previous embodiment is single sidewall plane Kenel, but the structure is only the single embodiment of the utility model, is not necessary limitation, and be hidden in and encircle in the embodiment Intersegmental elastic arm section part is the S-shaped structure of dual reflexed, nor necessary limitation.Please also refer to Fig. 7 to 9, this practicality is new The second preferred embodiment of type, neutralizing previous embodiment same section, details are not described herein.Each in this example encircles at section 4 ', Between the high ora terminalis 40 ' and welding ora terminalis 42 ', it is respectively formed with corresponding to plateau body section 2 ' and encircles section 4 ' towards opposite Direction bends the anti-hook end 44 ' extended towards so that the opposite flank of plateau body section 2 ' can all be hooked without any protrusion The position of drawing, especially anti-hook end 44 ' and the lower section positioned at elastic arm section 3 ', can further support elastic arm section 3 ', promote whole knot Structure intensity.Further, since the shrapnel height in this example is relatively low, therefore elastic arm section 3 ' is between being hidden in and encircling section 4 ', also only single One reflexed is formed substantially " structures of ㄈ " shapes then can be according to whole shrapnel height as the number of such reflexed quantity Demand and change, without for fear of the utility model implementation.

All it is to encircle the high ora terminalis of section from one simply to bend extension, and encircle section due to the adsorption section of the utility model Nor the structure for the flexure that is pressurized, therefore the probability of error generation is greatly reduced so that adsorption section is easy to be maintained at pre-determined bit It sets for suction, thereby reduces and fall rate when shrapnel is drawn.And the plateau body section of lower section and both sides encircle section A firm pedestal is collectively formed, after allowing elastic piece structure to be miniaturized, remains to keep solid and be hardly damaged；And encircle the weldering of section Connecing there are gap, can allow the scolding tin reserved on circuit board after being melted by reflow machine between ora terminalis and construction section, such as Fig. 9 Shown in dotted line, between intrusion welding ora terminalis 42 ' and construction section 1 ', the stable bond between shrapnel and circuit board is further ensured that；Especially It is that the pedestal of lower section does not have rear Inverse problem, it is ensured that the welding section of shrapnel is sized at real estate, meets electronics member The trend trend of part micromation, reaches above-mentioned purpose completely.

Certainly, to further enhance the support of adsorption section, the utility model third preferred embodiment is as shown in Figure 10, the suction Attached section 5 " of ora terminalis can extend to the opposite 40 " top of high ora terminalis for encircling section 4 ", the opposite high ora terminalis 40 " for encircling section 4 " also phase One corresponding secondary segment 50 " is extended to bending, allows adsorption section 5 " with secondary segment 50 " while being encircled section 4 " by both sides and prop up Support, when elastic arm section 3 " is pressurized, provides stronger support.And in this example, though elastic arm section 3 " only has simple convex bending Compression zone 30 " is without additional contact jaw outstanding, also without the implementation for fear of the utility model.

The above is the utility model preferred embodiment, any according to equal caused by the utility model structure And other effects and other modifications, be all the scope of the utility model.

Claims (5)

1. a kind of high small table surface-mounted elastic sheet is for being surface mounted to a circuit board, which is characterized in that install on the surface Shrapnel includes：

One confession is surface mounted to the construction section of foregoing circuit plate；

One plateau body section, tool there are one be folded upward at by above-mentioned construction section extension lower edge, one it is following in contrast to this The top edge and the aforementioned top edge of connection of edge and aforementioned lower edge and a left side edge parallel to each other and a right edge Edge；

One bends the elastic arm section for extending from the aforementioned aforementioned top edge of plateau body section, and aforementioned elastic arm section is far from aforementioned plateau ontology There are one the compression zones for being higher than above-mentioned plateau body section for section formation；

A pair is bent respectively by aforementioned left side edge and aforementioned right side edge and what is extended parallel to each other encircles section, each aforementioned ring Embrace section all have there are one high ora terminalis and one in contrast to aforementioned high ora terminalis welding ora terminalis；And

One adsorption section, bending from aforementioned encircle the aforementioned high ora terminalis of one of section, and are parallel to above-mentioned construction section and to aforementioned another The aforementioned high ora terminalis for encircling section extends and aforementioned elastic arm section compression zone is exposed under non-stress on above-mentioned adsorption section Side, and when the compression of the compression zone of aforementioned elastic arm section is moved to less than preceding adsorption section, by preceding adsorption section and aforementioned can encircle Section support protection.

2. high small table surface-mounted elastic sheet as described in claim 1, which is characterized in that wherein above-mentioned adsorption section bending is certainly It is aforementioned to encircle the aforementioned high ora terminalis of one of section, and be parallel to above-mentioned construction section and extend, and by aforementioned another aforementioned height for encircling section Ora terminalis is supported.

3. high small table surface-mounted elastic sheet as described in claim 1, which is characterized in that further include anti-with above-mentioned adsorption section To a secondary segment of extension.

4. high small table surface-mounted elastic sheet as described in claim 1, which is characterized in that wherein above-mentioned each section of encircling Between the high ora terminalis and welding ora terminalis, have toward aforementioned another anti-hook end encircled section direction bending and extended.

5. high small table surface-mounted elastic sheet as described in claim 1, which is characterized in that the compression of wherein above-mentioned elastic arm section Portion further includes a contact jaw.