KR20170137974A - Surface-mountable finger spring for electronic device - Google Patents

Abstract

The present invention relates to a surface-mountable finger spring for an electronic device. The finger spring for an electronic device of the present invention is installed between a PCB (2) and a liquid crystal (3) of an electronic device or between electronic components to absorb impact by elastic force, thereby protecting the PCB (2) and the liquid crystal (3) and performing surface mounting which forms an electrical contact point between the electronic components. The malfunction of the electronic devices, such as a contact failure or the like, can be prevented.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a finger spring for a surface-

The present invention relates to a finger spring for an electronic device which is installed between a PCB of a electronic device and liquid crystal or between parts of an electronic device to absorb impact by an elastic force to protect the PCB and the liquid crystal or to form an electrical contact between electronic components The first and third extensions, the second and third extensions, and the third and fourth extensions are formed to have a self-elasticity on both sides of the upper and lower spaced upper and lower plates, Wherein the first and second extended portions are formed with folded portions extending outwardly and the ends of the third extended portions are formed in the fourth and fifth extended portions, A stopper portion that is vertically bent downward is formed so that the end portion of the extension portion is closely contacted, so that the elastic force of the curved curve portion is increased and the pressure This can increase the buffer than the movable distance by which the pressing surface mounting by which relates to the possible use in electronic equipment finger spring.

In recent years, as electronic devices including mobile phones have become smaller and slimmer, reducing the size of components mounted on them has become a hot topic in the industry. In addition to miniaturization of mounted components, high integration technology is applied have.

Therefore, it is attached to the PCB of the electronic device to prevent breakage, detachment and deformation of the PCB components as well as the liquid crystal due to external impact or vibration, and it is also possible to stably provide electrical conductivity A boxed finger or a spring finger was used.

A conventional "elastic electrical contact terminal capable of surface mounting" (Korean Patent No. 10-1352633) has been proposed as such a buffer member. According to this elastic contact terminal, a flat bottom portion to be soldered to a printed circuit board, A fixing member made of a stopper protruding at one end; A first elastic portion extending from the other end of the bottom portion and bent in a first direction, a connecting portion extending upward from the first elastic portion in an inclined manner, and a second elastic portion extending from an end of the connecting portion and bent in a second direction Elastic connecting members; And a contact member composed of a contact portion extending flat from the end portion of the second elastic portion and a support portion bent downward in the first direction from the end portion of the contact portion.

Such conventional elastic electrical contact terminals can uniformly disperse external pressure, thereby reducing the possibility of deformation or breakage.

In addition, according to the "connection terminal and a circuit board module including the same, " Korean Patent Laid-Open Publication No. 10-2016-0007396 discloses a PCB having a base portion mounted parallel to the base portion, A bending part formed integrally with the base part and the contact part, the bending part being bent at least one time, and the bending part formed at least at one side of the base part or the contact part, And a guide portion for limiting a moving distance of the base portion.

Such conventional connection terminals can reduce the height of the connection terminals and reduce the thickness of the mobile communication device by using the bending shape and bend at a plurality of positions. Therefore, it is possible to prevent the connection terminals from being excessively deformed, And can stably contact the communication device.

However, in the above-described conventional technology, the curved line of the elastic part and the bending part of the elastic part and the bending part having the curved line of 'U' shape can not be restored due to excessive pressure, resulting in failure of electronic devices such as contact failure.

In order to solve the above-mentioned problems, the present invention has been made to solve the above-mentioned problems of the related art, and it is an object of the present invention to provide a curved curved plate portion having a curved curved portion having a self-elasticity on both sides of a top plate and a bottom plate spaced apart from each other, The first, second, and third extension portions extend upward and downward in the diagonal direction, respectively. The folded portions are formed at the ends of the first and second extended portions, and the end portions of the third extended portions are engaged with the end portions of the fourth extended portions The present invention has been made in order to solve the problem that the curved portion that has the elastic force by the excessive pressing force is not restored and is restored, and the buffer actuation distance is increased.

According to an aspect of the present invention, there is provided a finger spring for an electronic device capable of surface mounting, the electronic device including a PCB and a liquid crystal, or between the electronic components and absorbing impact by an elastic force to protect the PCB and the liquid crystal, A finger spring for an electronic device which forms an electrical contact between parts, comprising: a first plate and a second plate arranged to be bent in a hollow shape, and having self-elasticity on both sides of the top plate and the bottom plate, Wherein the folded portion is formed at an end portion of the first and second extending portions, and the end portion of the third extending portion is formed in a shape of a curved portion extending in the diagonal direction, And a stopper portion that is vertically bent downward is formed so that the ends of the four extension portions are closely contacted with each other.

At this time, the fitting portion is protruded at the center of the end of the fourth extending portion, and the cut-out hole is formed at the center portion of the stopper portion so that the fitting portion can be inserted.

The upper side plate extends integrally downward at both ends in the width direction of the upper plate, and the lower side plate integrally extends upward at both ends in the width direction of the lower plate. When the upper plate is pressed by an external force, And the lower side plate extends outward at both ends in the width direction of the bottom plate so as to overlap with the inside and outside of the bottom side plate, and extends vertically upward.

According to the present invention, since one plate is bent to form a hollow shape, the upper plate and the lower plate spaced apart from each other, and the first, third, and second, The fourth extending portions are respectively upwardly and downwardly extended in the diagonal direction, the folding portions are formed at the ends of the first and second extending portions, and the end portions of the third extending portions are formed with vertically downwardly bent stopper portions so that the end portions of the fourth extending portions are in close contact with each other , The curved portion having the elastic force due to the excessive pressing force is not folded back to prevent the electronic device from failing such as contact failure, and the buffer operation distance can be increased.

1 is a perspective view of a finger spring for an electronic device according to the present invention;
2 is an AA sectional view of a finger spring for an electronic device according to the present invention.
3 is a sectional view of the finger spring for an electronic device according to the present invention in use;
4 is a view showing a state in which a finger spring for an electronic device according to the present invention is pressed.
5 and 6 show another embodiment of a finger spring for an electronic device according to the present invention.
7 is another embodiment of a finger spring for an electronic device according to the present invention.
8 is a BB sectional view of another embodiment of Fig. 7;
9 to 11 show another embodiment of a finger spring for an electronic device according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which a surface mountable finger spring (hereinafter referred to as a finger spring) according to the present invention can be understood.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

1 and 2, a finger spring 1 according to the present invention is installed between a PCB 2 and a liquid crystal 3 of an electronic device or between electronic components, and absorbs shocks by an elastic force, (1) which protects the liquid crystal (2) and the liquid crystal (3) and forms an electrical contact between the electronic components, characterized in that one plate is bent to form a hollow shape, The first and third extending portions 11 and 12 and the second and fourth extending portions 21 and 22 are formed to have curved curved portions R so as to have self-elasticity on both sides of the bottom plate 10 and the bottom plate 20 The folded portion 30 is formed at an end portion of the first and second extended portions 11 and 21 and the end portion of the third extended portion 12 is formed at the end portion of the fourth extended portion 11, And a stopper portion (13) bent downward vertically so that an end portion of the extension portion (22) is closely contacted.

That is, the bottom plate 20 is soldered to the PCB, and the top plate 10 is flatly formed so as to be moved to a position where the top plate 10 is vacuum-absorbed and mounted by an external pick-up means. ) Is preferably formed to be approximately 0.6 mm.

The first extension part 11 extends from one side of the upper surface plate 10 to the other side of the diagonal line so that the finger spring 1 forms a hexagonal shape and is pressed by the elastic force and is moved downward and restored to the original state by the elastic restoring force. And the second extension portion 21 integrally extends upward from the one side of the bottom plate 20 in the diagonal direction so that the end portions of the first and second extension portions 11, The upper plate 10 and the lower plate 20 are brought into contact with each other at a middle height.

At this time, the end portions of the first and second extending portions 11 and 21 are integrally connected to form the folded portion 30, thereby overcoming the problem that the conventional curved portion is not folded back due to excessive pressure.

The third extending portion 12 integrally extends downward in the diagonal direction from the other side of the upper surface plate 10 and the fourth extending portion 22 extends upward from the other side of the lower surface plate 20 in the diagonal direction And an end portion of the third extending portion 12 is vertically bent downward so that the end of the fourth extending portion 22 is not moved when the top plate 10 is pressed by an external force, And is formed in a closed-type structure in which an elastic force is applied as a whole and an electrical contact is formed as a whole.

That is, the stopper portion 13 is positioned outside the end portion of the fourth extending portion 22 to prevent the fourth extending portion 22 from moving, so that the pressing force is dispersed when the top plate 10 is pressed So as to be constant in the downward direction.

A cutout 23 is formed in the center of the end of the fourth extension 22 and a cutout 13a is formed in the center of the stopper 13 to insert the cutout 23 do.

Accordingly, the third extending portion 12 and the fourth extending portion 22 are prevented from being separated from each other, and the upper surface plate 10 is vertically downwardly pressed constantly under repetitive pressing, and is restored to its original shape.

4, a plurality of finger springs 1 may be provided between the PCB 2 and the liquid crystal 3. Depending on the size of the liquid crystal 3, a plurality of finger springs 1 may be formed. , A TV, a notebook, an ATM liquid crystal, or a liquid crystal of a touch screen type, and may be formed between a PCB for an electronic device requiring a compact thickness and an electronic component.

An upper side plate 14 extends downward at both ends in the width direction of the upper plate 10 and a lower side plate 24 extends integrally upwards at opposite ends of the lower plate 20 in the width direction. The lower side plate 24 is positioned on the lower side plate 24 so that the upper side plate 14 can overlap the inside and outside of the lower side plate 24 when the upper plate 10 is pressed by an external force. And extends vertically upward from both ends in the width direction to prevent the upper side plate 14 from being deviated outwardly.

At this time, the upper side plate 14 is bent downward to have the same length as that of the upper plate 10, and the lower side plate 24 prevents the upper plate 10 from being inclined to one side when the upper plate 10 is pressed It is preferable that the both sides extend longer than the distance between the folded portion 30 and the third and fourth extended portions 12 and 22 when the upper plate 10 is pressed and moved downward Do.

The width of the finger spring 1 of the present invention may be various lengths depending on the space to be mounted, and it is preferable that the finger spring 1 is formed of a non-ferrous metal material such as copper, stainless steel or titanium.

And is formed of a non-ferrous metal material having excellent elasticity as described above to absorb external impacts and vibrations as well as to stably maintain electrical contacts between the electronic parts.

4 (b), the end portions of the stopper portion 13 and the fourth extending portion 22 of the folded portion 30 and the third extending portion 12 are moved outwardly, The upper side plate 14 is positioned inside the lower side plate 24 to maintain the circular shape even under repetitive pressing, and the conventional curved portion is folded back by the excessive pressure by the folded portion 30 It is possible to prevent it from occurring beforehand.

5 and 6 are views showing another embodiment of a finger spring for an electronic device capable of surface mounting according to the present invention.

" 형태로 절곡된 고정부(22b)가 일체로 형성된다.5, the end portion of the fourth extending portion 22 is bent in the horizontal direction, and on one side of the end portion,

Quot; shape is integrally formed.

That is, the fixing portion 22b extending from one side of the end portion bent in the horizontal direction of the fourth extending portion 22 is vertically bent upward so as to abut one side of the stopper portion 13, and the stopper portion 13 and then bent downward to abut the other side of the stopper portion 13 so as to entirely cover the stopper portion 13 so that the third extending portion 12 and the fourth extending portion 13 The extension portion 22 is more firmly fixed.

6, the end portion of the fourth extension portion 22 is bent in the horizontal direction, and both sides of the end portion are provided with a fixing portion 22b of "A" shape to enclose the stopper portion 13, Symmetrically formed so that their ends face each other.

That is, the fixing portions 22b extending from both side surfaces of the end portions bent in the horizontal direction of the fourth extending portion 22 are vertically bent upward so as to abut the both sides of the stopper portion 13, 13 so that the end of each stopper portion 13 is formed to face the upper portion of the central portion of the stopper portion 13. [

7 shows another embodiment of the finger spring for an electronic device according to the present invention, and FIG. 8 shows a cross-sectional view taken along line B-B of FIG.

As shown in FIGS. 7 and 8, reinforcing protrusions 11a, 12a, 21a, and 22a are formed at the center of the first, second, third, and fourth extending portions 11, 12, Is formed.

At this time, the reinforcing protrusions 11a, 12a, 21a, and 22a are vacuum-adsorbed by the external pickup means, and the lower surface of the upper surface plate 10 is soldered to the PCB 2, The first, second, third, and fourth extension portions 11, 12, 21, and 22 are not protruded from the PCB 2 and the liquid crystal 3, respectively.

9 to 11 are views showing still another embodiment of the finger spring for an electronic device according to the present invention.

" 형태로 절곡된 고정부(22b)가 일체로 형성된다.9, the stopper portion 13 protrudes downward from the center of the end portion of the third extending portion 12, and on both sides of the end of the fourth extending portion 22, The end portion of the fourth extension portion 22 is bent in the horizontal direction and the one end of the fourth extension portion 22 is bent at one side so as to surround the stopper portion 13,

Quot; shape is integrally formed.

Therefore, when the top plate 10 is pressed, the latching portion 25 prevents the stopper portion 13 from moving to both sides, thereby preventing the finger spring 1 from being pressed to one side, And is then restored to its original position.

As shown in FIG. 10, it is needless to say that the upper plate 10 may be extended to a predetermined width without providing any wings on both sides of the upper plate 10.

" 형태로 절곡된 고정부(22b)가 일체로 형성된다.11, the stopper portion 13 is formed by bending a part of the center of the end portion of the third extending portion 12 downward, and the stopper portion 13 is formed at the center portion of the fourth extending portion 22 A stopper through hole 26 is formed to allow the stopper portion 13 to be inserted therein. The end of the fourth extending portion 22 is bent in the horizontal direction, and on one side thereof,

Quot; shape is integrally formed.

Therefore, when the top plate 10 is pressed as described above, the stopper through hole 26 prevents the stopper portion 13 from moving to both sides, and the stopper portion 13 is prevented from moving to one side It is possible to prevent excessive detachment.

The finger spring 1 according to the present invention can increase the damping operation distance as compared with the prior art, and maintain the elasticity of the electric power for a long time.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. .

1: Finger spring 2: PCB
3: liquid crystal 10: upper plate
11: first extension part 12: third extension part
13: stopper portion 14: upper side plate
20: lower plate 21: second extension part
22: fourth extension part 24: lower side plate
30:

Claims (8)

The PCB 2 and the liquid crystal 3 are provided between the PCB 2 and the liquid crystal 3 of the electronic apparatus or between the electronic components so as to absorb the impact by the elastic force to protect the PCB 2 and the liquid crystal 3, A finger spring (1) for an electronic device capable of surface mounting,
The first and third extension portions 11 and 12 and the second and third extension portions 11 and 12 are formed to have a self-elasticity on both sides of the top plate 10 and the bottom plate 20 spaced upward and downward, 2 and the fourth extending portions 21 and 22 form a curved curved portion R and extend upward and downward in a diagonal direction, and the end portions of the first and second extending portions 11 and 21 are provided with folded portions Wherein the end of the third extension part (12) is formed with a stopper part (13) bent downward vertically so that the end part of the fourth extension part (22) is closely contacted. Possible finger springs for electronic equipment. The method according to claim 1,
A cutout 23 is formed at the center of the end of the fourth extension 22 and a cutout 13a is formed at the center of the stopper 13 so that the cutout 23 can be inserted Finger spring for surface mount electronic equipment. The method according to claim 1,
The upper side plate 14 integrally extends downward at both widthwise ends of the upper plate 10 and the lower side plate 24 extends upwardly at both ends in the width direction of the lower plate 20, When the plate 10 is pressed by an external force, the lower side plate 24 is moved in the width direction of the lower plate 20 so that the upper side plate 14 can overlap the inside and outside of the lower side plate 24 And extending vertically upward at both ends of the finger spring. The method according to claim 1,
The end portion of the fourth extension portion 22 is bent in the horizontal direction, and on one side of the end portion, the stopper portion 13 '

"Is formed integrally with the fixing portion 22b. The method according to claim 1,
The end portions of the fourth extending portions 22 are bent in the horizontal direction and the fixing portions 22b of the "A" shape are arranged symmetrically on both sides of the end portions so as to face the end portions, Wherein the fingertip spring is formed of a metal. The method according to claim 1,
And a reinforcing projection (11a, 12a, 21a, 22a) is formed at the center of the first, second, third, and fourth extending portions (11, 12, 21, 22) Possible finger springs for electronic equipment. The method according to claim 1,
The stopper portion 13 is protruded downward from the center of the end portion of the third extending portion 12 and is provided at both sides of the end of the fourth extending portion 22 with a stopper portion 25 projecting to both sides of the stopper portion 13 The end of the fourth extension part 22 is bent in the horizontal direction, and on one side thereof, the stopper part 13 is formed so as to surround the stopper part 13,

"Is formed integrally with the fixing portion 22b. The method according to claim 1,
The stopper portion 13 is formed by bending a part of the center of the end of the third extending portion 12 downwardly and the stopper portion 13 is inserted into the center of the fourth extending portion 22 The end of the fourth extending portion 22 is bent in the horizontal direction and the one end of the fourth extending portion 22 is bent at one side thereof so as to surround the stopper portion 13,

"Is formed integrally with the fixing portion 22b.

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