[utility model content]
For the problem that background technology faces, the purpose of this utility model is to provide a kind of improvement tired and carry heavily stressed elastic piece structure.
For achieving the above object, the utility model adopts following technological means:
A kind of shell fragment, it comprises a base portion; One elastic arm, from the upwards bending extension of described base portion one end, described elastic arm has an extension and is positioned at above described base portion, and upwards a contact-segment is extended in bending from described extension; One stop section is extended from the relative other end of described base portion and is arranged, and described stop section is at least part of keeps out described extension downwards.
Further, extend in opposite directions described elastic arm and described stop section.Described elastic arm has a junction and connects described extension and described base portion, and described connecting portion is upwards to be bent to form from described base portion, and described extension becomes tabular, has a plane that is in contact with one another between described stop section and described extension.
Further, described contact-segment is higher than described stop section, and described contact-segment has a contact site, and described contact site is the arc setting.The end of described elastic arm further has a reflexed section, and described reflexed section extends to form downwards and towards the direction of described extension from described contact-segment.The end of described reflexed section is at least part of lower than described stop section.Be formed with 10 degree between described contact-segment and described reflexed section to an angle of 30 degree.The angle that forms between described contact-segment and described reflexed section is 18 degree.
Further, described shell fragment comprises a kink, and described kink connects described base portion and described stop section, and described stop section becomes tabular.A protection section is extended in bending downwards respectively from the both sides of described stop section, and described extension is between two described protection sections.The end with described elastic arm of the free terminal vicinity of described stop section is concordant.
Further, described base portion, described extension and described stop section three all be arranged in parallel.Having a gap between described base portion and described extension, is the zero clearance between described stop section and described extension.
Further, described stop section has an opening, and described opening extends through and enters described base portion, and described contact-segment manifests described stop section from described opening upwards.Described stop section has an opening, and described opening extends through to the joint of described extension and described contact-segment, and described contact-segment manifests described stop section from described opening upwards.
Further, when described elastic arm is in normal operating condition, the described base portion of described elastic arm butt.
Further, at least one side of the contiguous described extension of described base portion is provided with a breach.
Compared with prior art, the utlity model has following beneficial effect:
When described shell fragment is soldered on a circuit board, in the time of need to being electrically conducted an electronic component to described circuit board, described electronic component contacts with described contact-segment downwards, because described contact-segment connects described extension, described elastic arm has from described base portion and upwards is positioned at the top of described base portion in the bending described extension of extending, described stop section is kept out described extension downwards, so can improve tired phenomenon, improves simultaneously the stress of described elastic arm.
[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.
The utility model elastic piece structure is used for an electronic component (not shown) is electrically conducted to a circuit board (not shown).
See also Fig. 1, described shell fragment is bent to form by a sheet metal punching press, it comprises a base portion 1, described base portion 1 is tabular, and is at least part of in order to be soldered on described circuit board, in the present embodiment, the interlude of described base portion 1 is welding region, in other embodiments, can be also the bottom surface of described base portion 1 all in order to welding, so welding is more stable.
See also Fig. 1 to Fig. 3, upwards bend from described base portion 1 one ends and extend to form an elastic arm 2, described elastic arm 2 comprises from described base portion 1 and upwards is bent to form a junction 21, described connecting portion 21 is arc, described base portion 1 all is provided with respectively a breach 11 near the both sides of described connecting portion 21, in other embodiments also can for, described base portion 1 is provided with described breach 11 near a side of described connecting portion 21.Other end direction horizontal-extending from described connecting portion 21 towards described base portion 1 forms an extension 22, described connecting portion 21 connects described extension 22 and described base portion 1, described extension 22 is positioned at the top of described base portion 1, described extension 22 is tabular and is horizontally disposed with, has a gap between described base portion 1 and described extension 22, and both be arranged in parallel, in other embodiments also can for, described extension 22 is for being obliquely installed.Upwards a contact-segment 23 is extended in bending from described extension 22, and described contact-segment 23 has a contact site 231, and described contact site 231 is arc setting and the highest point that is positioned at described contact-segment 23.Extend to form a reflexed section 24 downwards and towards the direction of described extension 22 from described contact-segment 23, the end of described reflexed section 24 further is bent to form a butting section 25, be formed with 10 degree between described contact-segment 23 and described reflexed section 24 to an angle of 30 degree, the angle that forms between contact-segment described in the present embodiment 23 and described reflexed section 24 is 18 degree.The minimum point of described reflexed section 24 is higher than the end face of described extension 22, in other embodiments also can for, the minimum point of described reflexed section 24 is lower than the end face of described extension 22.
See also Fig. 4,22 both sides, described extension become the symmetrical tapered setting towards the direction of described elastic arm 2, described contact-segment 23 both sides become the symmetrical tapered setting towards the direction of described reflexed section 24, described reflexed section 24 both sides become the symmetrical tapered setting towards the bearing of trend away from described contact-segment 23, when described shell fragment uses, guarantee that it can not rock, in other embodiments also can for, described extension 22, described contact-segment 23 and described reflexed section 24 are asymmetric convergent setting.
See also Fig. 1 and Fig. 3, the other end extension relative from described base portion 1 is provided with a stop section 4, and extend in opposite directions described elastic arm 2 and described stop section 4.4 one-tenth of described stop sections tabular, described stop section 4 parts are kept out described extension 22 downwards, has a plane that is in contact with one another between described stop section 4 and described extension 22, be the zero clearance between described stop section 4 and described extension 22, described base portion 1, described extension 22 and described stop section 4 threes all be arranged in parallel.In other embodiments also can for, between described stop section 4 and described extension 22, at least a portion is the zero clearance, another part can be the zero clearance, also can non-vanishing gap, namely described stop section 4 or described extension 22 are obliquely installed.
See also Fig. 3 and Fig. 4; described stop section 4 is all covered described extension 22 and is established; can protect described extension 22 impaired; described contact-segment 23 is higher than described stop section 4; the end portion of described reflexed section 24 is that described butting section 25 is lower than described stop section 4; in other embodiments also can for, described butting section 25 is higher than described stop section 4.The free terminal of described stop section 4 is concordant with the end of the described elastic arm 2 of vicinity, be free terminal and described connecting portion 21 distolateral concordant of described stop section 4, but described connecting portion 21 sides are revealed in described stop section 4 one ends, shortened the entire length of described shell fragment, simple in structure and facilitate moulding, described breach 11 is positioned at the below of described stop section 4.a protection section 5 is extended in bending downwards respectively from the both sides of described stop section 4, described protection section 5 is to be torn by the two side portions of described stop section 4 to form, save material and moulding process simple, the bottom of described protection section 5 is higher than described base portion 1, prevent the described protection section 5 described circuit boards of scratch, described extension 22 is between two described protection sections 5, simultaneously, described protection section 5 is the chamfering setting near described breach 11 places, prevent scratch, in other embodiments also can for, under one side direction of described stop section 4, described protection section 5 is extended in bending, described protection section 5 is that the folding that bends of the side blow from described stop section 4 forms, do not tear, and the bottom of described protection section 5 can be concordant with the bottom of described base portion 1.
See also Fig. 1 and Fig. 4, described shell fragment also comprises a stop section 4, and described stop section 4 connects described base portion 1 and described stop section 4.Described stop section 4 has an opening 41, described opening 41 1 ends extend through described stop section 4 and enter described base portion 1, be that described base portion 1 has the described opening 41 of part, described opening 41 other ends extend through to the joint of described elastic arm 2 with described extension 22, and described contact-segment 23 upwards manifests described stop section 4 from described opening 41.In the present embodiment, described opening 41 is to run through towards two ends from the centre position of described stop section 4 extend to arrange, in other embodiments also can for, described opening 41 is to offer and run through towards two ends to extend from a side of described stop section 4 to arrange.
Making of described elastic piece structure the present embodiment is specific as follows:
One sheet material is provided, at first forms described base portion 1, the both sides of described base portion 1 one ends offer respectively described breach 11.
an end that has a described breach 11 from described base portion 1 more upwards bends horizontal-extending again and forms described elastic arm 2, the top that is positioned at described base portion 1 in the parallel and gap of the relatively described base portion 1 in described extension 22, described contact-segment 23 is tilted to and is bent to form, make described contact-segment 23 be positioned at the top of described base portion 1 also all higher than described extension 22, then oppositely be bent to form described reflexed section 24, making described reflexed section 24 and the angle of described contact-segment 23 is that 10 degree are to 30 degree, the angle that forms between contact-segment described in the present embodiment 23 and described reflexed section 24 is 18 degree, the minimum point of described reflexed section 24 is higher than described extension 22.
Then the other end from described base portion 1 upwards is bent to form described stop section 4, the top that is positioned at described base portion 1 in the parallel and gap of the relatively described base portion 1 in described stop section 4, the top that is positioned at described extension 22 of parallel and zero clearance, relatively described extension 22, described stop section 4, be 4 block described extensions 22, described stop section to top offset, and the free terminal of described stop section 4 is distolateral concordant with described connecting portion 21, and described breach 11 is positioned at the below of described stop section 4.Described stop section 4 is in the process of bottom offset, and described opening 41 is crossed described contact-segment 23 and described reflexed section 24 downwards, makes described contact-segment 23 upwards be revealed in described opening 41, and described butting section 25 is lower than described stop section 4.
At last; the position of contiguous described extensions 22,4 both sides is torn respectively the described protection section 5 that is bent to form downwards from described stop section; described extension 22 is between two described protection sections 5; can protect described elastic arm 2 impaired; also can strengthen simultaneously the intensity of described stop section 4; better keep out described extension 22, described breach 11 is positioned at the below of described protection section 5.
In other embodiments also can for, in this difference made from the present embodiment of summary roughly only:
A kind of making; first form described stop section 4, described protection section 5 can first tear and be bent to form, then is bent to form described elastic arm 2 downwards from described base portion 1 one ends; then bend again described stop section 4 downwards, perhaps upwards bend described base portion 1 and described elastic arm 2.
Another kind is made, and first tears to be bent to form described protection section 5, then is bent to form described stop section 4 from described base portion 1, makes described stop section 4 be positioned at the top of described base portion 1.
after above-mentioned shell fragment is made, in the present embodiment, first described base portion 1 is soldered to described circuit board, the intermediate ends of described base portion 1 is used for welding, then described electronic component is positioned over the top of described shell fragment, and the downward described contact site 231 of crimping, in use, described contact-segment 23 is because compressing also of described electronic component can be along with to bottom offset, when described contact site 231 is moved to certain position, the described butting section 25 described base portions 1 of the downward butt of meeting, described extension 22 is near the distortion downwards of described contact-segment 23, thereby drive described connecting portion 21 and described base portion 1 near the upwards distortion of formation trace of position of described connecting portion 21, be that described base portion 1 is near the mobilizable upwards micro-deformation of an end of described connecting portion 21.
In other embodiments also can for, described electronic component and described contact site 231 contact as welding etc., described butting section 25 is the described base portion 1 of butt not also, described base portion 1 is near an end inertia of described connecting portion 21.
When needs stir relatively described extension 22, described stop section 4 to top offset, can utilize finger or other instrument upwards to move by described breach 11.
In sum, the utility model shell fragment has following beneficial effect:
(1) before the described contact site 231 of the downward crimping of described electronic component, described extension 22 is kept out in described stop section 4, it had a downward precompression, when the described contact site 231 of the downward crimping of described electronic component, because described contact-segment 23 connects described extension 22, so can improve the tired phenomenon of described shell fragment, improve simultaneously the stress of described elastic arm 2.
(2) extend in opposite directions described elastic arm 2 and described stop section 4, so shortens the entire length of described shell fragment, and because described elastic arm 2 and described stop section 4 are all towards the bearing of trend bending, facilitate moulding, saves cost.
(3) described stop section 4 all becomes tabular with described extension 22, described stop section 4 parts are kept out described extension 22 downwards, has a plane that is in contact with one another between described stop section 4 and described extension 22, when the described contact site 231 of the downward crimping of described electronic component, said contact-segment 23 can horizontal jitter, thereby guarantees stable contact the between described electronic component and described contact site 231.
(4) described contact-segment 23 higher than described stop section 4, when the described contact site 231 of the downward crimping of described electronic component, has enough strain spaces.
(5) described reflexed section 24 is to extend to form downwards and towards the direction of described extension 22 from described contact-segment 23, operation is not easy its scratch when using, the end of described reflexed section 24 further has described butting section 25 lower than described stop section 4, prevents that further external element from holding its hook.
(6) be formed with 10 degree between described contact-segment 23 and described reflexed section 24 to an angle of 30 degree.
When the angle of described reflexed section 24 and described contact-segment 23 is 10 when spending, the described contact site 231 of the downward crimping of described electronic component, the downward appropriate deformation displacement of described contact-segment 23 and described extension 22, described butting section 25 gets final product the described base portion 1 of downward butt, provide good stress as described shell fragment, be unlikely to over-travel or frequency of utilization high and cause described shell fragment tired or the damage.
When the angle of described reflexed section 24 and described contact-segment 23 is 30 when spending, the described contact site 231 of the downward crimping of described electronic component, the downward appropriate deformation displacement of described contact-segment 23 and described extension 22, described butting section 25 also can moving down along with described contact site 231, towards the direction displacement of described extension 22 and contact with described base portion 1, when providing good stress for described shell fragment, described shell fragment is unlikely to towards losing away from the direction of described extension 22.
When the angle that forms between described contact-segment 23 and described reflexed section 24 is 18 when spending, the described contact site 231 of the downward crimping of described electronic component, the angle that makes described contact-segment 23 and described reflexed section 22 is 5 when spending, described butting section 25 just contacts with described base portion 1, described contact-segment 23 is less with the deformation displacement of described extension 22, described electronic component continues the described contact site 231 of downward crimping to certain distance, make described butting section 25 and good stable the contacting of described base portion 1, be unlikely to again to occur tired phenomenon.
(7) described base portion 1, described extension 22 and described stop section 4 threes all be arranged in parallel, and when the described contact site 231 of the downward crimping of described electronic component, described shell fragment firmly is not easy.Has a gap between described base portion 1 and described extension 22, enough spaces are provided for described elastic arm 2 distortion, and be the zero clearance between described stop section 4 and described extension 22, make the contact stabilization between described electronic component and described contact site 231 not rock.To sum up, so design, be to realize maximum best strain under the prerequisite that guarantees good stable contact, improves the serviceability of described shell fragment, extends the useful life of described shell fragment.
(8) described opening 41 1 ends extend through described stop section 4 and enter described base portion 1, be that described base portion 1 has the described opening 41 of part, described opening 41 other ends extend through to the joint of described elastic arm 2 with described extension 22, described contact-segment 23 upwards manifests described stop section 4 from described opening 41, in the processing procedure of described shell fragment, convenient described stop section 4 bends downwards, avoids the described stop section 4 described contact-segments 23 of scratch.
(9) when described elastic arm 2 is in normal operating condition, the described contact site 231 of the downward crimping of described electronic component, the described base portion 1 of the downward butt in described butting section 25 of described elastic arm 2 has increased the positive force of described shell fragment.
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.