CN202103217U

CN202103217U - Spring piece

Info

Publication number: CN202103217U
Application number: CN2011200981930U
Authority: CN
Inventors: 曲志成; 杨兵涛; 吴迎龙; 陈明江
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2012-01-04
Anticipated expiration: 2021-03-25

Abstract

The utility model discloses a spring piece, comprising a fixing part fixed on a circuit board. The fixing part is bent along a direction away from the circuit board and is extended to form an elastic part, the elastic part is extended to form a contact part and protrudes a pressurization arm along a direction away from the fixing part and towards the circuit board, and a buffer interspace is formed between the pressurization arm and the fixing part. The downward press stroke of the spring piece is small, and the elastic force is large after pressing downwards, so that the spring piece is not easy to control.

Description

Shell fragment

Technical field

The utility model relates to flexible member, relates in particular to a kind ofly to press down that stroke is little, to press down back elastic force big and be not easy the shell fragment of being subdued.

Background technology

Along with the continuous development of microelectric technique, the volume of various electronic devices and components becomes more and smaller and more exquisite.In electronic circuit board; Shell fragment often is used as and is interrupted interface unit; An end that utilizes shell fragment keeps fixedly being electrically connected with a negative pole point on the circuit board; But shell fragment other end bending part and circuit board maintain the certain clearance distance, and therefore main bending part with shell fragment presses down towards circuit board.

The operation principle of traditional shell fragment 100` as shown in Figure 1: after shell fragment 100` is pressed down; Just rely on the reaction force that change brought at R angle; Therefore work as shell fragment 100` and need bear regular elastic deformation, and, therefore make shell fragment 100` generation residual stress and residual strain phenomenon easily because the internal stress that elastic deformation took place alternately changes; Concentrate the place to damage the function of the deformation of finally following the string in residual stress owing to tired.Therefore in order to prolong the working life of shell fragment, must reduce the fault of construction of shell fragment as far as possible.

Therefore, need badly and a kind ofly press down that stroke is little, to press down back elastic force big and be not easy the shell fragment of being subdued.

The utility model content

The purpose of the utility model is that the deficiency to above-mentioned prior art provides a kind of and presses down that stroke is little, to press down back elastic force big and be not easy the shell fragment of being subdued.

To achieve these goals; The technical scheme of the utility model is: a kind of shell fragment; Comprise the fixed part that is fixed on the circuit board, said fixed part is along away from the direction bending of circuit board and extend to form elastic portion, and said elastic portion extends to form contact site; Said elastic portion also protrudes out the supercharging arm towards the direction of said circuit board along the direction away from said fixed part, forms the buffering space between said supercharging arm and the said fixed part.

Preferably, said supercharging arm is positioned at the side of said elastic portion and is integrative-structure with said elastic portion.When said shell fragment was pressed down, circuit board can produce the elastic force that a very big reaction force increases shell fragment to said supercharging arm.

Preferably, the side of said contact site extends to form anti-splenium towards the bending of said circuit board direction.Be provided with and saidly prevented that splenium can prevent that elastic portion from pressing down excessively and subdued and follow the string.

Preferably, the end face of said contact site has the salient point that protrudes out.Said salient point is set guarantees that the utility model shell fragment is good with contacting of extraneous electronic devices and components.

Preferably, the said fixed part bending place that is bent to form said elastic portion forms and to be the curved portions away from the arc shape of circuit board.Curved portions can play the effect that well prevents to climb tin.

As stated, in the utility model shell fragment, said elastic portion also protrudes out the supercharging arm towards the direction of said circuit board along the direction away from said fixed part, forms the buffering space between said supercharging arm and the said fixed part.When the utility model shell fragment was pressed down, circuit board can produce the elastic force that a very big reaction force increases said shell fragment to said supercharging arm.

Description of drawings

Fig. 1 is the perspective view of the shell fragment of conventional art.

Fig. 2 is the perspective view of an embodiment of the utility model shell fragment.

Fig. 3 is the stereochemical structure schematic views of another angle of shell fragment as shown in Figure 2.

Fig. 4 is the view of another angle of shell fragment as shown in Figure 2.

Fig. 5 is the topology view after shell fragment as shown in Figure 2 is pressed down.

Each description of reference numerals is following among the figure:

Embodiment

By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with execution mode and conjunction with figs. and give explanation.

Shown in Fig. 2-5; A kind of shell fragment 100 is provided, comprises fixed part 10, said fixed part 10 is used for fixing (figure is last not to be shown) on the circuit board; Said fixed part 10 bends and extends to form elastic portion 20 along the direction away from circuit board; Said elastic portion 20 extends to form contact site 21, and said elastic portion 20 also protrudes out supercharging arm 30 towards the direction of said circuit board along the direction away from said fixed part 10, forms the buffering space between said supercharging arm 30 and the said fixed part 10.

The preferably, like Fig. 2 and shown in Figure 3, said supercharging arm 30 is positioned at the side of said elastic portion 20 and is integrative-structure with said elastic portion 20.When said shell fragment 100 was pressed down, circuit board can produce the elastic force that a very big reaction force increases said shell fragment 100 to said supercharging arm 30.

The preferably, shown in Fig. 2-5, the side of said contact site 21 extends to form anti-splenium 40 towards the bending of said circuit board direction.Be provided with and saidly prevented that splenium 40 can prevent that elastic portion 20 from pressing down excessively and subdued and follow the string.

The preferably, shown in Fig. 2-5, the end face of said contact site 21 has the salient point 50 that protrudes out.Said salient point 50 is set guarantees that the utility model shell fragment 100 is good with contacting of extraneous electronic devices and components.

The preferably, shown in Fig. 2-5, the bending place formation that said fixed part 10 is bent to form said elastic portion 20 is the curved portions 60 away from the arc shape of circuit board, can play the effect that well prevents to climb tin.

In conjunction with Fig. 2-5, in the utility model shell fragment 100, said elastic portion 20 also protrudes out supercharging arm 30 towards the direction of said circuit board along the direction away from said fixed part 10, forms the buffering space between said supercharging arm 30 and the said fixed part 10.When the utility model shell fragment 100 was pressed down, circuit board can produce the elastic force that a very big reaction force increases said shell fragment 100 to said supercharging arm 30.

Claims

1. shell fragment; Comprise the fixed part that is used for fixing on the circuit board; Said fixed part bends and extends to form elastic portion along the direction away from circuit board; Said elastic portion extends to form contact site, it is characterized in that: said elastic portion also protrudes out the supercharging arm towards the direction of said circuit board along the direction away from said fixed part, forms the buffering space between said supercharging arm and the said fixed part.

2. shell fragment as claimed in claim 1 is characterized in that: said supercharging arm is positioned at the side of said elastic portion and is integrative-structure with said elastic portion.

3. shell fragment as claimed in claim 1 is characterized in that: the side of said contact site extends to form anti-splenium towards said circuit board direction bending.

4. shell fragment as claimed in claim 3 is characterized in that: the end face of said contact site has the salient point that protrudes out.

5. like each described shell fragment of claim 1-4, it is characterized in that: the bending place that said fixed part is bent to form said elastic portion is the arc shape away from circuit board, and said arc shape forms curved portions.