CN209785810U - Long-life presses shell fragment and preparation should press material area of shell fragment - Google Patents

Abstract

The utility model relates to a long-life pressing elastic sheet and a material belt for manufacturing the pressing elastic sheet, which comprises an elastic sheet main body with an upward arched middle part; the transition ring is arranged around the periphery of the elastic sheet main body; a horizontal ring disposed around the periphery of the transition ring; the middle part of the elastic sheet main body is provided with a pressing part which protrudes upwards or downwards, the outer ring of the elastic sheet main body is provided with vent holes at equal intervals, the vent holes are provided with stress relief grooves, and the elastic sheet main body, the transition ring, the horizontal ring and the connecting pins are of an integrally formed structure. Through set up the air vent in the shell fragment main part to press the flow of the inside air of shell fragment with higher speed, reduce the deformation burden of pressing the shell fragment, can not make the action of pressing the shell fragment have the delay nature, thereby improve the life and the sensitivity of pressing the shell fragment.

Description

Long-life presses shell fragment and preparation should press material area of shell fragment

Technical Field

The utility model relates to a button shell fragment technical field, concretely relates to long-life press shell fragment and this material area of pressing the shell fragment of preparation.

Background

The on-off of the push switch is realized by the reciprocating expansion deformation of the push spring, and the service life of the push switch is usually determined by the service life of the push spring. Because the bottom of the existing pressing elastic piece is of a plane structure, the gap is very small during installation, air in the pressing elastic piece cannot be timely removed during pressing, and air cannot enter quickly when hand-releasing pressure is released, so that the pressing elastic piece is delayed when being deformed in a replying manner and pressed, the deformation burden of the pressing elastic piece is increased, and the service life of the key elastic piece is shortened.

SUMMERY OF THE UTILITY MODEL

To not enough in the background art, the utility model provides a long-life press the shell fragment and make this material area of pressing the shell fragment.

The utility model adopts the technical proposal that: a long-life pressing elastic sheet and a material belt for manufacturing the pressing elastic sheet comprise an elastic sheet main body with an upward arched middle part; the transition ring is arranged around the periphery of the elastic sheet main body; a horizontal ring disposed around the periphery of the transition ring; the middle part of the elastic sheet main body is provided with a pressing part which protrudes upwards or downwards, the outer ring of the elastic sheet main body is provided with vent holes at equal intervals, the vent holes are provided with stress relief grooves, and the elastic sheet main body, the transition ring, the horizontal ring and the connecting pins are of an integrally formed structure.

Further, the transition ring is obliquely arranged, the horizontal ring is horizontally arranged, and an included angle a between the transition ring and the horizontal ring is smaller than 15 degrees.

Furthermore, arc transition is adopted between the elastic sheet main body and the transition ring and between the transition ring and the horizontal ring.

Furthermore, the connecting surface of the connecting pin connected with the horizontal ring is connected with the circular arc surface, and the tail part of the connecting pin is provided with a cutting part which is tilted upwards.

Furthermore, the elastic sheet main body is circular or rectangular with two circular ends.

Further, the stress relief groove is of a V-shaped structure.

The utility model provides a material area of shell fragment is pressed in preparation, includes metal material area piece, the pre-compaction shaping presses the shell fragment on metal material area piece and the delivery hole on the metal material area piece, press the both ends of shell fragment and be connected with metal material area piece through connecting the foot.

The utility model has the advantages that: the utility model discloses a set up the air vent in the shell fragment main part to press the flow of the inside air of shell fragment with higher speed, reduce the deformation burden of pressing the shell fragment, can not make the action of pressing the shell fragment have postponing nature, thereby improve the life and the sensitivity of pressing the shell fragment, in addition, set up the stress relief groove on the air vent for eliminate because the shell fragment main part takes place the concentrated stress that deformation and formed near the air vent, can avoid long-term use near the through-hole to take place crack and fracture.

Drawings

Fig. 1 is a schematic structural view of a rectangular pressing spring.

Fig. 2 is a schematic cross-sectional view of a rectangular pressing spring.

Fig. 3 is a schematic structural view of a circular pressing spring.

Fig. 4 is a schematic view of the connection of a prior art connection face with a horizontal ring.

Fig. 5 is a schematic view of the material belt structure of the present invention.

Fig. 6 is a schematic diagram of a tape structure in the prior art.

Fig. 7 is an enlarged view of a portion a in fig. 1.

In the figure: 1. a spring plate main body; 2. a transition ring; 3. a horizontal ring; 4. a connecting pin; 5. a pressing part; 6. a vent hole; 7. a stress relief groove; 8. a, an included angle; 9. a connecting surface; 10. a shearing section; 11. a metal strip sheet; 12. pressing the elastic sheet; 13. a delivery orifice; 14. a connecting pin; 15. b, the included angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

the utility model provides a long-life press shell fragment and the material area of this press shell fragment of preparation.

In the present embodiment, referring to fig. 1 to 7, the long-life pressing dome includes a dome main body 1 having an upwardly arched middle portion; a transition ring 2 arranged around the periphery of the spring plate main body 1; a horizontal ring 3 disposed around the outer periphery of the transition ring 2; the middle part of the elastic sheet main body is provided with a pressing part 5 which protrudes upwards or downwards, and the stroke of the pressing sheet is shortened by arranging the pressing part 5, so that the stress change is reduced, the service life is prolonged, and the touch pressure feeling is increased;

And the outer ring of the elastic sheet main body is provided with vent holes 6 at equal intervals, the vent holes 6 are provided with stress relief grooves 7, and the elastic sheet main body 1, the transition ring 2, the horizontal ring 3 and the connecting pins 4 are of an integrally formed structure. The vent hole is used for quickly entering and discharging gas, so that the flow of air in the pressing elastic sheet is accelerated, the deformation load of the pressing elastic sheet is reduced, the action of the pressing elastic sheet is not delayed, and the service life and the sensitivity of the pressing elastic sheet are improved;

According to practical application, the simple arrangement of the vent hole is beneficial to improving the sensitivity and prolonging the service life, but the elastic sheet main body is pressed repeatedly, force is easily concentrated near the vent hole, so that cracks and even breakage often occur near the vent hole after long-time use, and in order to solve the problem of stress concentration, the vent hole is provided with the stress relief groove for relieving concentrated stress formed near the vent hole due to deformation of the elastic sheet main body, so that the cracks and breakage which occur near the through hole after long-time use can be avoided.

Excessive 2 rings are obliquely arranged, the horizontal ring 3 is horizontally arranged, and an included angle a 8 between the excessive 2 rings and the horizontal ring 3 is smaller than 15 degrees. The transition ring plays a role in stress transition and prolongs the service life.

The elastic sheet main body and the transition ring and the horizontal ring are in arc transition.

The connecting surface 9 of the connecting pin and the horizontal ring is connected by an arc surface, and the tail part of the connecting pin 4 is provided with a cutting part 10 which is tilted upwards. Present connection foot and level ring or shell fragment main part between even connect the face straight line, lead to connecting b contained angle 15 between face and the level ring or the shell fragment main part and be close 90 (as shown in fig. 4), this kind of structure is pressing the shell fragment reciprocal back of pressing, connects easy residual stress concentration and fatigue failure between foot and the level ring, leads to connecting the foot fracture, reduces life, the utility model discloses the connection face that will connect foot and level ring adopts the arc surface to be connected, helps eliminating stress, improves life.

The elastic sheet main body 1 is circular or rectangular with two circular ends.

The stress relief groove 7 is of a V-shaped structure.

The utility model discloses still include metal material area piece 11, pre-compaction shaping and press shell fragment 12 and the delivery hole 13 on the metal material area piece 11 on metal material area piece 11, the both ends of pressing shell fragment 12 are connected with metal material area piece through connecting foot 13.

The existing pressing elastic piece is directly formed by punching and molding the metal material strap piece, conveyed to the shearing machine through the conveying hole in the metal material strap piece to be sheared, burrs (shown in figure 6) can be naturally left at two ends of the pressing elastic piece after shearing is completed, the pressing elastic piece with the structure is easy to concentrate residual stress after being used for a long time, the burr is easy to preferentially break, and the service life is shortened. The utility model discloses to connect the foot as stamping forming press the connection media of shell fragment and metal material area piece to connect the terminal slight perk of foot, it is not only more convenient to cut, and burr department also along with connecting the perk of foot afterbody moreover, is difficult for producing the problem that residual stress concentrates, improves life. Therefore, the connecting pins are used as connecting pins for connecting the positive electrode and the negative electrode, and are also used as media for connecting the metal strip sheets.

The utility model discloses a set up air vent 6 in shell fragment main part 1 to press the flow of the inside air of shell fragment with higher speed, reduce the deformation burden of pressing the shell fragment, can not make the action of pressing the shell fragment have postponing nature, thereby improve the life and the sensitivity of pressing the shell fragment, in addition, set up the stress relief groove on the air vent for eliminate because the shell fragment main part takes place the concentrated stress that deformation and form near the air vent, can avoid long-term use near the through-hole to take place crack and fracture.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims (7)

1. the utility model provides a long-life presses shell fragment which characterized in that: comprises a spring plate main body with the middle part arched upwards; the transition ring is arranged around the periphery of the elastic sheet main body; a horizontal ring disposed around the periphery of the transition ring; the middle part of the elastic sheet main body is provided with a pressing part which protrudes upwards or downwards, the outer ring of the elastic sheet main body is provided with vent holes at equal intervals, the vent holes are provided with stress relief grooves, and the elastic sheet main body, the transition ring, the horizontal ring and the connecting pins are of an integrally formed structure.

2. A long-life pressing dome according to claim 1, characterized in that: the transition ring is obliquely arranged, the horizontal ring is horizontally arranged, and an included angle a between the transition ring and the horizontal ring is smaller than 15 degrees.

3. A long-life pressing dome according to claim 1 or 2, characterized in that: the elastic sheet main body and the transition ring and the horizontal ring are in arc transition.

4. A long-life pressing dome according to claim 1 or 2, characterized in that: the connecting surface of the connecting pin connected with the horizontal ring is connected with the circular arc surface, and the tail part of the connecting pin is provided with a shearing part which is tilted upwards.

5. A long-life pressing dome according to claim 1 or 2, characterized in that: the elastic sheet main body is round or rectangular with two ends being circular arcs.

6. A long-life pressing dome according to claim 1, characterized in that: the stress relief groove is of a V-shaped structure.

7. A material belt for manufacturing the pressing elastic sheet according to any one of claims 1 to 6, which is characterized by comprising a metal material belt sheet, the pressing elastic sheet pre-pressed and formed on the metal material belt sheet, and a conveying hole in the metal material belt sheet, wherein two ends of the pressing elastic sheet are connected with the metal material belt sheet through connecting pins.