CN201556714U - Elastic piece - Google Patents

Abstract

The utility model discloses an elastic piece which comprises a welding part, an elastic part and a contact part, wherein the elastic part is formed by extending one end of the welding part upwards in a bending way; the elastic part is provided with a first bending part, a connecting part and a second bending part; the first bending part is formed by extending one end of the welding part upwards in a bending way; the connecting part is formed by extending one end of the first bending part towards one side of the welding part; the second bending part is formed by extending the connecting part upwards in a bending way; the contact part is formed by extending one end of the elastic part towards one side thereof, and the two sides of the contact part respectively bend and extend downwards to form a side wall; and a baffle is formed by bending and extending one side of the side wall inwards, and is positioned under the connecting part. By means of the baffle blocking under the connecting part, the elastic piece can block and limit the downward moving range of the connecting part and prevent the connecting part from being stretched to generate permanent deformation, thus leading the elastic piece to have good stretching resistance.

Description

Shell fragment

Technical field

The utility model relates to a kind of shell fragment, particularly relates to a kind of with the shell fragment of surface mounting technology solid welding to the circuit board.

Background technology

See also Fig. 3, a kind of existing shell fragment 100 ' is to be bent into by a sheet metal punching press, with surface mounting technology (SMT, surface mounted technology) solid welding is to circuit board (figure does not show), and utilize this as metal material, with and the elastic force that had of bending back, play the effect that connects and cushion during with the circuit board electric connection in other assembly.

Shell fragment 100 ' comprises a weld part 10 ', an elastic portion 20 ' and a contact site 30 '.Weld part 10 ' is in order to be welded on the circuit board.Elastic portion 20 ' be by an end of weld part 10 ' upwards bending extend and form, this elastic portion 20 ' comprises one first kink 21 ', a junction 22 ' and one second kink 23 ', one end of described weld part 10 ' upwards bending extends to form this first kink 21 ', one end of first kink 21 ' extends to form described connecting portion 22 ' to weld part 10 ' one side, and connecting portion 22 ' upwards bending extends to form described second kink 23 '.Contact site 30 ' is positioned at weld part 10 ' top, is that a end by elastic portion 20 ' extends to a side and forms, and the both sides of this contact site 30 ' bending downwards respectively extend to form a sidewall 31 '.Rely on this two side 31 ' to keep off a side that is held in elastic portion 20 ' respectively, can prevent to cause elastic portion 20 ' both sides inclination and distortion to the left and right because of shell fragment 100 ' is squeezed.

Yet, in the process of packing and transportation, the contact site 30 ' of shell fragment 100 ' or weld part 10 ' are hung or when pullled by external force excessively being stretched because of improper colluding, can drive elastic portion 20 ' stretches thereupon, thereby make an end of connecting portion 22 ' move downward and be easy to generate distortion, when deformation extent exceeds elastic limit, then cause shell fragment 100 ' permanent deformation.

The utility model content

The purpose of this utility model is to provide a kind of shell fragment with good stretching resistance effect at the defective that the above-mentioned background technology exists.

For achieving the above object, shell fragment that the utility model provides comprises a weld part, an elastic portion and a contact site.Elastic portion be by an end of weld part upwards bending extend and form, this elastic portion comprises one first kink, a junction and one second kink, one end of described weld part upwards bending extends to form this first kink, one end of first kink extends to form described connecting portion to weld part one side, and connecting portion upwards bending extends to form described second kink.The contact site is in weld part top, is that a end by elastic portion extends to a side and forms, and the both sides of this contact site bending downwards respectively extend to form a sidewall, and a lateral margin of sidewall bends inwards and extends to form a baffle plate, and baffle plate is positioned at the below of connecting portion.

As mentioned above, the utility model shell fragment relies on the baffle plate retaining to be held in the below of connecting portion in the process of packing and transportation, can keep off and hold and limit the scope that connecting portion moves downward, prevent that connecting portion from excessively producing permanent deformation because of being stretched, thereby make shell fragment have good stretching resistance effect.

Description of drawings

Fig. 1 is the stereogram of a kind of embodiment of the utility model shell fragment.

Left view when Fig. 2 is welded on the circuit board for shell fragment shown in Figure 1.

Fig. 3 is a kind of stereogram of existing shell fragment.

The description of reference numerals of each parts is as follows among the figure:

Shell fragment 100 weld parts 10

Perforate 11 elastic portion 20

First kink, 21 connecting portions 22

Second kink, 23 contact sites 30

Sidewall 31 baffle plates 32

Circuit board 40

Embodiment

By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, described in detail below in conjunction with embodiment and conjunction with figs..

See also Fig. 1 and Fig. 2, the utility model shell fragment 100 is to be bent into by a sheet metal punching press, with the surface mounting technology solid welding to circuit board 40, and utilize this as metal material, with and the elastic force that had of bending back, play the effect that connects and cushion during with circuit board 40 electric connections in other assembly.This shell fragment 100 comprises a weld part 10, an elastic portion 20 and a contact site 30.

Weld part 10 is roughly rectangular tabular, and to circuit board 40, the middle part of this weld part 10 offers an oval-shaped perforate 11 in order to solid welding, relies on this perforate 11 can make welding more firm.

Elastic portion 20 is upwards to be extended with the bending of one " S " type by an end of weld part 10 to form.This elastic portion 20 comprises one first kink 21, a junction 22 and one second kink 23, one end of described weld part 10 upwards bending extends to form this first kink 21, one end of first kink 21 extends to form described connecting portion 22 to weld part 10 1 sides, and connecting portion 22 upwards bending extends to form described second kink 23.Described first kink 21 and second kink 23 are horizontal inverted " U " type.Rely on this first kink 21 and second kink 23 are set, elastic portion 20 can produce an elastic-restoring force when stressed, play the effect of buffering when shell fragment 100 moves downward.

Contact site 30 is positioned at weld part 10 tops, and this contact site 30 is to be extended to weld part 10 1 lateral bucklings by an end of second kink 23 to form, and this contact site 30 is parallel form with weld part 10.The both sides of contact site 30 bending downwards respectively extend to form a sidewall 31, and a lateral margin of this two side 31 bends inwards respectively and extends to form a baffle plate 32, and baffle plate 32 is positioned at the below of connecting portion 22.Rely on this two side 31 to keep off a side that is held in elastic portion 20 respectively, can prevent to cause elastic portion 20 both sides inclination and distortion to the left and right because of shell fragment 100 is squeezed.

In sum, the utility model shell fragment 100 is in the process of packing and transportation, rely on baffle plate 32 retainings to be held in the below of connecting portion 22, can keep off and hold and limit the scope that connecting portion 22 moves downward, prevent that connecting portion 22 from excessively producing permanent deformation because of being stretched, thereby make shell fragment 100 have good stretching resistance effect.

Claims (3)

1. a shell fragment comprises a weld part, an elastic portion and a contact site; Elastic portion be by an end of weld part upwards bending extend and form, this elastic portion comprises one first kink, a junction and one second kink, one end of described weld part upwards bending extends to form this first kink, one end of first kink extends to form described connecting portion to weld part one side, and connecting portion upwards bending extends to form described second kink; The contact site is in weld part top, is that a end by elastic portion extends to a side and forms, and the both sides of this contact site bending downwards respectively extend to form a sidewall; It is characterized in that: a lateral margin of described sidewall bends inwards and extends to form a baffle plate, and baffle plate is positioned at the below of connecting portion.

2. shell fragment as claimed in claim 1 is characterized in that: described first kink and second kink are horizontal inverted " U " type.

3. shell fragment as claimed in claim 1 is characterized in that: offer a perforate on the described weld part.

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