CN2796304Y

CN2796304Y - Anti-elastic fatigue spring sheet

Info

Publication number: CN2796304Y
Application number: CN 200520017345
Authority: CN
Inventors: 徐子淮
Original assignee: HEPU BUSINESS DESIGN CO Ltd
Current assignee: HEPU BUSINESS DESIGN CO Ltd
Priority date: 2005-04-28
Filing date: 2005-04-28
Publication date: 2006-07-12
Anticipated expiration: 2015-04-28

Abstract

The utility model discloses an anti-elastic fatigue elastic sheet, which is provided with a welding surface; a second elastic section is extended from one end of the welding surface; the second elastic section is connected with a movable arm section; at least two bending parts are bent on the movable arm section; the other end of the welding surface is upwards extended with a first elastic section which is extended with a horizontal press supplying surface so as to form a structure of an elastic sheet. A vertical shearing force wire passing through the first and the second elastic sections can avoid the elastic sheet from generating deflecting deformation when received force and downwards pressed.

Description

The shell fragment that elastoresistance is tired

Technical field

The utility model relates to the tired shell fragment of a kind of elastoresistance, and particularly a kind of being located between a printed circuit board (PCB) and the hardware can effectively be improved the tired shell fragment of elastoresistance of the contact effect and the structural strength of this shell fragment.

Background technology

The shell fragment that general electronics industry is used always, be to be bent into the metal material punching press, again with surface mount technology (Surface Mount Technology, be called for short: SMT) mode is welded on the circuit board, utilize the material behavior of shell fragment itself and the shape that is constituted, to produce certain elastic force, can be used as other element and circuit board electrically connects, ground connection, screening effect, dwindle the loop, reduce impedance, make the energy reduction and radiated emission is reduced, reach the inhibition electromagnetic interference, static discharge and meet Electro Magnetic Compatibility, even the cushioning effect when also can be used as contact.

See also shown in Figure 1, it is general existing shell fragment 1 structure, it comprises the face of exerting pressure 11, one first stretch section 12, one lever arm section 13, one second stretch section 14, an and solder side 15, wherein, this solder side 15 is long plate shape, can utilize surface mount technology (SurfaceMount Technology, abbreviation SMT) mode is welded on the surface of a printed circuit board (PCB) (not shown), and after being bent upwards inflection by the left end of solder side 15, form second stretch section 14 of circular arc at sweep, after the other end of this second stretch section 14 extends upward also crooked inflection again, form first stretch section 12 of circular arc at sweep, this first stretch section 12 also extend one with the face of exerting pressure 11 of solder side 15 mutual levels; See also shown in Figure 2ly, 15 welding of this solder side are bonded on the printed circuit board (PCB) 21, can contacts with other hardware 22 with the order face 11 of exerting pressure, and make this printed circuit board (PCB) 21 and this hardware 22 electric connections.

The stress of this shell fragment 1 is a monolateral supporting construction, cause this shell fragment 1 under the big application of force downwards, will make shell fragment 1 cause deflection (as shown in Figure 2), 13 distortion of lever arm section can't be returned to the original form, serious, will cause 13 fractures of this lever arm section and can not use; And because of the deflection of shell fragment 1, also cause with the contact area of this hardware 22 diminish (only contacting a part), thereby conductive area diminishes the increase impedance.

The utility model content

Because the shortcoming of aforementioned prior art, the utility model provides a kind of brand-new tired shell fragment of elastoresistance, in the hope of the defective that prior art produced of forgoing.

The shell fragment that provides a kind of elastoresistance tired is provided the purpose of this utility model, with the structural strength of effective this shell fragment of raising.

According to above-mentioned purpose, this shell fragment includes the face of exerting pressure, one first stretch section, one lever arm section, one second stretch section, an and solder side, wherein, after being bent upwards inflection by the left end of this solder side, form second stretch section of circular arc at sweep, this second stretch section connection one is the lever arm section of the upper right inclination in lower-left, the stage casing of this lever arm section is bent with at least two bends, after this lever arm section right-hand member extends upward also crooked inflection again, form first stretch section of circular arc at sweep, this first stretch section also extend one with the face of exerting pressure of the mutual level of solder side, and form the overall structure of a shell fragment; Like this, by at least two bends on this lever arm section, and first and second stretch section is the setting of vertical shear line, make this shell fragment when stressed pressing down, can reduce this shell fragment and produce the deflection distortion, contact area can not diminished, and effectively improve the structural strength of this shell fragment.

Description of drawings

Fig. 1 is the front view of existing shell fragment.

Fig. 2 is the user mode schematic diagram of existing shell fragment.

Fig. 3 is the stereo appearance figure of the utility model shell fragment.

Fig. 4 is the front view of the utility model shell fragment.

Fig. 5 is the user mode schematic diagram of the utility model shell fragment.

Fig. 6 is the front view of another embodiment of the utility model shell fragment.

Embodiment

For understanding being arranged further and understand, now be described in detail as follows with the form of embodiment in conjunction with the accompanying drawings the purpose of this utility model, shape, constructing apparatus feature and effect thereof:

The utility model relates to a kind of " shell fragment that elastoresistance is tired ", and it is welded on the printed circuit board (PCB) 41, for a hardware 42 contacts; See also Fig. 3, shown in 4, this shell fragment 3 includes the face 31 of exerting pressure, one first stretch section 32, one lever arm section 33, one second stretch section 34, an and solder side 35, wherein, after being bent upwards inflection by an end of this solder side 35, form second stretch section 34 of circular arc at sweep, these second stretch section, 34 connections one are the lever arm section 33 of the upper right inclination in lower-left, be bent with at least two bends 331 on this lever arm section 33, after these lever arm section 33 other ends extend upward also crooked inflection again, form first stretch section 32 of circular arc at sweep, this first stretch section 32 also extend one with the face of exerting pressure 31 of solder side 35 mutual levels, and form the overall structure of a shell fragment 3.

Composition by above-mentioned member, see also shown in Figure 5, can be by at least two bends 331 on this lever arm section 33, and first and

second stretch section

32,34 is the setting of vertical shear line 36, make this shell fragment 3 when stressed pressing down, can reduce this shell fragment 3 and produce the deflection distortion, and effectively improve the structural strength of this shell fragment 3.

In an embodiment of the present utility model, see also shown in Fig. 3,4, these lever arm section 33 stage casings are bent with a reclinate bend 331 again, and are bent with another bend 331 that is bent upwards, make this lever arm section 33 have elasticity, and can offset the strength that presses down.

In this embodiment, see also shown in Figure 5 again, this solder side 35 is provided with a hole 351, when this shell fragment 3 is located between printed circuit board (PCB) 41 and the hardware 42, can use the mode of surface mount technology (SMT) or welding, so that the solder side 35 of this shell fragment 3 is attached on the printed circuit board (PCB) 41, and, bonding material (as: scolding tin, heat-conducting glue) firmly is positioned solder side 35 on the printed circuit board (PCB) 41 by the design of the hole 351 of this solder side 35.

Among another embodiment of the present utility model, see also shown in Figure 6, these lever arm section 33 stage casings are bent with a reclinate bend 332, and the horizontal part 333 that is bent upwards of the level that is bent with, and be bent with another bend 334 that is bent upwards, make this lever arm section 33 have elasticity, and can offset the strength that presses down, and the setting by this horizontal part 333, can increase the height of this shell fragment 3, can not make this shell fragment 3 produce deflections distortion yet.

In sum, the tired shell fragment of elastoresistance of the present utility model has unprecedented innovation structure really, and has novelty.

The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. the shell fragment (3) that elastoresistance is tired is welded on the printed circuit board (PCB) (41), contacts for a hardware (42); It is characterized in that the tired shell fragment of described elastoresistance comprises:

One face (31) of exerting pressure is in order to contact with hardware (42);

One first stretch section (32) is bent downwardly inflection by an end of the described face of exerting pressure (31) and forms;

One lever arm section (33), its side and described first stretch section (32) in addition

One end joins, and is bent with at least two bends (331) on the described lever arm section (33), makes described lever arm section (33) have elasticity; And

One second stretch section (34) is bent downwardly inflection by another side of described lever arm section (33) and forms, and extend one with the described face of exerting pressure (31) solder side (35) of level mutually.

2. the shell fragment (3) that elastoresistance according to claim 1 is tired is characterized in that being bent with a reclinate bend (331) on the described lever arm section (33), and is bent with another bend (331) that is bent upwards.

3. the shell fragment (3) that elastoresistance according to claim 1 is tired is characterized in that described solder side (35) is provided with a hole (351), so that described solder side (35) can be easy to coat set for bonding material.

4. the shell fragment (3) that elastoresistance according to claim 1 is tired, it is characterized in that described lever arm section (33) stage casing is bent with a reclinate bend (332), and the horizontal part (333) that is bent upwards of the level that is bent with, and be bent with another bend (334) that is bent upwards.