CN219610278U - Metal spring plate structure for reducing spring plate sound of keyboard switch and keyboard switch - Google Patents

Abstract

The utility model relates to a metal spring piece structure for reducing the spring piece sound of a keyboard switch and the keyboard switch, wherein the metal spring piece structure for reducing the spring piece sound of the keyboard switch comprises pins, a connecting part and a spring piece which are sequentially connected, the spring piece comprises a first spring piece part connected with the connecting part, a bending part connected with the first spring piece part, a second spring piece part connected with the bending part and a contact point arranged on the second spring piece part, and the height of the first spring piece part is 3-5.8 mm. The utility model provides a metal spring plate structure and a keyboard switch, wherein the swing and vibration amplitude of the metal spring plate structure are reduced by reducing the size of the metal spring plate structure, so that noise generated by the spring plate of the keyboard switch is reduced, and the use experience of the keyboard switch is improved.

Description

Metal spring plate structure for reducing spring plate sound of keyboard switch and keyboard switch

Technical Field

The utility model relates to the field of keyboard switches, in particular to a metal spring plate structure for reducing the spring plate sound of a keyboard switch and the keyboard switch.

Background

The keyboard switch is an important component of the mechanical keyboard, and the quality of the keyboard switch directly influences the use experience of the mechanical keyboard. The keyboard switch can give out the shell fragment sound when pressing, and the shell fragment sound is the sound that the switch piece vibrations that cause when button and switch piece contact and separation, how to reduce the shell fragment sound is a big difficult problem in the industry at present, also is one of the directions of research and development of each big manufacturer.

Disclosure of Invention

In view of this, the present utility model provides a metal spring structure and a keyboard switch, which reduce the swing and vibration amplitude of the metal spring structure by reducing the size of the metal spring structure, thereby reducing the noise generated by the spring of the keyboard switch and improving the use experience of the keyboard switch.

The aim of the utility model is achieved by the following technical scheme:

the utility model provides a reduce metal shrapnel structure of keyboard switch shell fragment sound, includes stitch, even material portion, the shell fragment that connects gradually, the shell fragment includes the first shell fragment portion of being connected with even material portion, the portion of bending of being connected with first shell fragment portion, the second shell fragment portion of being connected with the portion of bending and set up the contact point at second shell fragment portion, the height of first shell fragment portion is 3-5.8 millimeters.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. When the button drives the metal spring plate structure, the spring plate swings by taking the joint of the first spring plate part and the connecting part as a fulcrum, and the height of the first spring plate part of the metal spring plate structure is lower than that of the existing keyboard switch metal spring plate structure in the market, so that the swing amplitude of the metal spring plate structure is reduced, namely the amplitude is reduced, the sound emitted by the metal spring plate structure is also reduced, noise generated by the keyboard switch spring plate can be effectively reduced, and the silence of the keyboard switch is improved. In addition, the smaller size also makes the material consumption of the metal shrapnel structure less, can also practice thrift manufacturing cost, and the smaller metal shrapnel structure size simultaneously also can make keyboard switch inner structure compacter, can make the keyboard switch smaller or make the short axle, provides the design basis for the miniaturized design and the design of shortening of keyboard switch.

Optionally, in one possible implementation manner, the second spring piece portion is provided with two arc-shaped contact areas, and a distance between the two arc-shaped contact areas is 5-6 mm.

According to the metal spring plate structure, the distance between the two arc-shaped contact areas is lower than that of the two arc-shaped contact areas in the existing keyboard switch metal spring plate structure in the market, and the metal spring plate structure and the button are actually contacted with the two arc-shaped contact areas, so that the swing amplitude of the metal spring plate structure, namely the swing amplitude, is further reduced, sound emitted by the metal spring plate structure is further reduced, noise generated by the keyboard switch spring plate can be further reduced, and the use experience of the keyboard switch is better improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

Optionally, in a possible implementation, the width of the connecting portion is 5-9 mm.

The connecting part is used for firmly inserting the whole metal spring plate structure into the keyboard switch shell, and the weight of the spring plate is reduced due to the reduction of the size of the spring plate, so that the weight required to be borne by the connecting part is also reduced, the size of the connecting part is also reduced, the material consumption of the metal spring plate structure is further reduced, and the production cost is saved.

The utility model provides a reduce metal shrapnel structure of keyboard switch shell fragment sound, includes stitch, even material portion, the shell fragment that connects gradually, the shell fragment includes the first shell fragment portion of being connected with even material portion, the portion of bending of being connected with first shell fragment portion, and the second shell fragment portion of being connected with the portion of bending and set up the contact point at second shell fragment portion, the height of second shell fragment portion is 3-4.5 millimeters.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. By changing deformation stress of the bending part and the first elastic piece part, when the button drives the metal elastic piece structure, the second elastic piece part swings by taking the bending part as a fulcrum, but the height of the second elastic piece part of the metal elastic piece structure is lower than that of a corresponding area of the metal elastic piece structure of the keyboard switch in the market, the swing amplitude of the metal elastic piece structure caused by contact with the button is reduced, namely the amplitude is reduced, sound emitted by the metal elastic piece structure is also reduced, noise generated by the keyboard switch elastic piece can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

Optionally, in one possible implementation manner, the second spring piece portion is provided with two arc-shaped contact areas, and a distance between the two arc-shaped contact areas is 5-6 mm.

According to the metal spring plate structure, the distance between the two arc-shaped contact areas is lower than that of the two arc-shaped contact areas in the existing keyboard switch metal spring plate structure in the market, and the metal spring plate structure and the button are actually contacted with the two arc-shaped contact areas, so that the swing amplitude of the metal spring plate structure, namely the swing amplitude, is further reduced, sound emitted by the metal spring plate structure is further reduced, noise generated by the keyboard switch spring plate can be further reduced, and the use experience of the keyboard switch is better improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

Optionally, in a possible implementation, the width of the connecting portion is 5-9 mm.

The connecting part is used for firmly inserting the whole metal spring plate structure into the keyboard switch shell, and the weight of the spring plate is reduced due to the reduction of the size of the spring plate, so that the weight required to be borne by the connecting part is also reduced, the size of the connecting part is also reduced, the material consumption of the metal spring plate structure is further reduced, and the production cost is saved.

The keyboard switch comprises the metal spring plate structure for reducing the spring plate sound of the keyboard switch, a base, an upper cover, a terminal, the metal spring plate structure, a button for driving the metal spring plate structure to be connected or disconnected with the terminal and a spring for driving the button to return.

The keyboard switch manufactured by adopting the metal spring plate structure is lower than the existing keyboard switch metal spring plate structure in the market in height, so that the swing amplitude of the metal spring plate structure can be reduced, the sound emitted by the metal spring plate structure is smaller, and the use experience of the keyboard switch can be effectively improved. Meanwhile, the production cost of the keyboard switch product can be reduced due to the smaller-sized metal spring plate structure.

Optionally, in one possible implementation manner, the button is provided with a first inclined portion and a second inclined portion, the first inclined portion and the second inclined portion are respectively contacted with the two arc-shaped contact areas, the section of the first inclined portion is L-shaped, the first inclined portion is connected with the left side wall of the button and extends towards the right side direction of the button, the section of the second inclined portion is L-shaped, and the second inclined portion is connected with the right side wall of the button and extends towards the left side direction of the button.

The button is first tilting portion and second tilting portion with the position of two arc contact areas contact, and first tilting portion and second tilting portion are adduction each other, and inwards narrow, and the cross-section is L shape, and the structural strength of first tilting portion and second tilting portion also can be strengthened to adduction structure, promotes the reliability of first tilting portion and second tilting portion, strengthens keyboard switch's life.

Compared with the prior art, the utility model has the beneficial effects that:

the metal spring plate structure and the keyboard switch can reduce noise generated by the keyboard switch spring plate. In particular, since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. When the button drives the metal spring plate structure, the spring plate swings by taking the joint of the first spring plate part and the connecting part as a fulcrum, and the height of the first spring plate part of the metal spring plate structure is lower than that of the existing keyboard switch metal spring plate structure in the market, so that the swing amplitude of the metal spring plate structure is reduced, namely the amplitude is reduced, the sound emitted by the metal spring plate structure is also reduced, noise generated by the keyboard switch spring plate can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also makes the material consumption of the metal shrapnel structure less, can also practice thrift manufacturing cost, and the smaller metal shrapnel structure size simultaneously also can make keyboard switch inner structure compacter, can make the keyboard switch smaller or make the short axle, provides the design basis for the miniaturized design and the design of shortening of keyboard switch.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a structural diagram of a metal dome structure of a comparative example of the prior art.

Fig. 2 is a structural diagram of a metal dome structure according to embodiment 1 of the present utility model.

Fig. 3 is a structural diagram of a metal dome structure according to embodiment 2 of the present utility model.

Fig. 4 is a structural diagram of a metal dome structure according to embodiment 3 of the present utility model.

Fig. 5 is a structural diagram of a metal dome structure according to embodiment 4 of the present utility model.

Fig. 6 is an exploded view of the keyboard switch according to embodiment 5 of the present utility model.

Fig. 7 is an exploded view of another angle of the keyboard switch according to embodiment 5 of the present utility model.

Fig. 8 is a front view of a metal dome structure according to embodiment 5 of the present utility model.

Fig. 9 is a side view of a metal dome structure according to embodiment 5 of the present utility model.

Fig. 10 is a rear view of the metal dome structure of embodiment 5 of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the embodiments of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally put in use of the product of the application, or orientations or positional relationships that are conventionally understood by those skilled in the art, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The technical scheme of the utility model will be described below with reference to the accompanying drawings.

In this embodiment, the conventional switch sheet in the market is provided with a height a of 6.6 mm, a height B of 5.2 mm, a distance between two arc-shaped contact areas C of 7.3 mm, and a width of 9.24 mm.

Example 1

The embodiment provides a metal spring structure for reducing the sound of a spring of a keyboard switch, which comprises a stitch 11, a connecting part 12 and a spring which are sequentially connected, wherein the spring comprises a first spring part 13 connected with the connecting part 12, a bending part 14 connected with the first spring part 13, a second spring part 15 connected with the bending part 14 and a contact point 16 arranged on the second spring part 15, and the height of the first spring part 13 is 5.4 mm. The second elastic piece portion 15 is provided with two arc-shaped contact areas 17, the distance between the two arc-shaped contact areas 17 is 7.3 mm, and the width of the connecting portion 12 is 9.24 mm. Namely, the present embodiment reduces the height of the first spring plate portion only.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. When the button drives the metal spring plate structure, the spring plate swings by taking the joint of the first spring plate part 13 and the connecting part 12 as a fulcrum, and the height of the first spring plate part 13 of the metal spring plate structure of the embodiment is lower than that of the existing keyboard switch metal spring plate structure in the market, the swing amplitude of the metal spring plate structure can be reduced, namely the amplitude is reduced, the sound emitted by the metal spring plate structure is smaller, noise generated by the keyboard switch spring plate can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

Example 2

The embodiment provides a metal spring structure for reducing the sound of a spring of a keyboard switch, which comprises a stitch 21, a connecting part 22 and a spring which are sequentially connected, wherein the spring comprises a first spring part 23 connected with the connecting part 22, a bending part 24 connected with the first spring part 23, a second spring part 25 connected with the bending part 24 and a contact point 26 arranged on the second spring part 25, and the height of the first spring part 23 is 5.4 mm. The second spring piece portion 25 is provided with two arc-shaped contact areas 27, and the distance between the two arc-shaped contact areas 27 is 5.7 mm. Namely, the height of the first spring piece part and the distance between the two arc-shaped contact areas are reduced at the same time.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. When the button drives the metal spring plate structure, the spring plate swings by taking the joint of the first spring plate part 23 and the connecting part 22 as a fulcrum, and the height of the first spring plate part 23 of the metal spring plate structure of the embodiment is lower than that of the existing keyboard switch metal spring plate structure in the market, the swing amplitude of the metal spring plate structure can be reduced, namely the amplitude is reduced, the sound emitted by the metal spring plate structure is smaller, noise generated by the keyboard switch spring plate can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

In the metal spring structure of this embodiment, the distance between the two arc contact areas 27 is lower than the distance between the two arc contact areas 27 in the existing metal spring structure of the keyboard switch in the market, because the metal spring structure and the button are actually contacted with the two arc contact areas 27, the swing amplitude of the metal spring structure can be further reduced, that is, the amplitude is further reduced, the sound emitted by the metal spring structure is also further reduced, the noise generated by the keyboard switch spring can be further reduced, and the use experience of the keyboard switch is better promoted. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

In the present embodiment, the width of the connecting portion 22 is 7.24 mm.

The material connecting part 22 is used for firmly inserting the whole metal spring plate structure into the keyboard switch shell, and the weight of the spring plate is reduced due to the reduction of the size of the spring plate, so that the weight required to be borne by the material connecting part 22 is also reduced, the size of the material connecting part 22 is also reduced, the material consumption of the metal spring plate structure is further reduced, and the production cost is saved.

Example 3

The embodiment provides a metal spring structure for reducing the sound of a spring of a keyboard switch, which comprises a stitch 31, a connecting part 32 and a spring which are sequentially connected, wherein the spring comprises a first spring part 33 connected with the connecting part 32, a bending part 34 connected with the first spring part 33, a second spring part 35 connected with the bending part 34 and a contact point 36 arranged on the second spring part 35, and the height of the second spring part 35 is 4.2 mm. The second spring piece portion 35 is provided with two arc-shaped contact areas 37, and the distance between the two arc-shaped contact areas 37 is 7.3 mm. The width of the web 32 was 9.24 mm. Namely, the present embodiment reduces the height of the first spring plate portion only.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. Through changing the deformation stress of the bending part 34 and the first elastic piece part 33, when the button drives the metal elastic piece structure, the second elastic piece part 35 swings with the bending part 34 as a fulcrum, but in the metal elastic piece structure of this embodiment, the height of the second elastic piece part 35 is lower than that of the corresponding area of the existing keyboard switch metal elastic piece structure in the market, the swing amplitude of the metal elastic piece structure caused by contact with the button can be reduced, namely the amplitude is reduced, the sound emitted by the metal elastic piece structure is also smaller, the noise generated by the keyboard switch elastic piece can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

Example 4

The embodiment provides a metal spring structure for reducing the sound of a spring of a keyboard switch, which comprises a stitch 41, a connecting part 42 and a spring which are sequentially connected, wherein the spring comprises a first spring part 43 connected with the connecting part 42, a bending part 44 connected with the first spring part 43, a second spring part 45 connected with the bending part 44 and a contact point 46 arranged on the second spring part 45, and the height of the second spring part 45 is 4.2 mm. The second spring piece portion 45 is provided with two arc-shaped contact areas 47, and the distance between the two arc-shaped contact areas 47 is 5.7 mm. Namely, the height of the second spring piece part and the distance between the two arc-shaped contact areas are reduced at the same time.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. Through changing the deformation stress of the bending part 44 and the first elastic piece part 43, when the button drives the metal elastic piece structure, the second elastic piece part 45 swings with the bending part 44 as a fulcrum, but in the metal elastic piece structure of this embodiment, the height of the second elastic piece part 45 is lower than that of the corresponding area of the existing keyboard switch metal elastic piece structure in the market, the swing amplitude of the metal elastic piece structure caused by contact with the button can be reduced, namely the amplitude is reduced, the sound emitted by the metal elastic piece structure is also smaller, the noise generated by the keyboard switch elastic piece can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

In the metal spring structure of this embodiment, the distance between the two arc contact areas 47 is lower than the distance between the two arc contact areas 47 in the existing metal spring structure of the keyboard switch in the market, because the metal spring structure and the button are actually contacted with the two arc contact areas 47, the swing amplitude of the metal spring structure can be further reduced, that is, the amplitude is further reduced, the sound emitted by the metal spring structure is also further reduced, the noise generated by the keyboard switch spring can be further reduced, and the use experience of the keyboard switch is better promoted. In addition, the smaller size also reduces the material consumption of the metal spring plate structure, and can save the production cost.

In the present embodiment, the width of the connecting portion 42 is 7.24 mm.

The connecting part 42 is used for firmly inserting the whole metal spring plate structure into the keyboard switch shell, and the weight of the spring plate is reduced due to the reduction of the size of the spring plate, so that the weight required to be borne by the connecting part 42 is also reduced, the size of the connecting part 42 is also reduced, the material consumption of the metal spring plate structure is further reduced, and the production cost is saved.

Example 5

The present embodiment provides a keyboard switch, which includes a base 51, an upper cover 52, a terminal 53, a metal spring plate structure 54, a button 55 for driving the metal spring plate structure 54 to be connected or disconnected with the terminal 53, and a spring 56 for driving the button 55 to return.

The keyboard switch made of the metal spring plate structure 54 of the embodiment has the advantages that the height of the metal spring plate structure 54 is lower than that of the existing keyboard switch metal spring plate structure 54 in the market, so that the swing amplitude of the metal spring plate structure 54 can be reduced, the sound emitted by the metal spring plate structure 54 is smaller, and the use experience of the keyboard switch can be effectively improved. At the same time, the smaller size of the metal spring structures 54 also reduces the cost of manufacturing the keyboard switch product.

In this embodiment, the button 55 is provided with a first inclined portion 551 and a second inclined portion 552, the first inclined portion 551 and the second inclined portion 552 are respectively in contact with the two arc-shaped contact areas 547, the cross section of the first inclined portion 551 is L-shaped, the first inclined portion 551 is connected to the left side wall of the button 55 and extends in the right direction of the button 55, the cross section of the second inclined portion 552 is L-shaped, and the second inclined portion 552 is connected to the right side wall of the button 55 and extends in the left direction of the button 55.

The contact part of the button 55 and the two arc contact areas 547 is a first inclined part 551 and a second inclined part 552, the first inclined part 551 and the second inclined part 552 are mutually retracted and are narrowed inwards, the section is L-shaped, the structure of the retracted structure can also enhance the structural strength of the first inclined part 551 and the second inclined part 552, the reliability of the first inclined part 551 and the second inclined part 552 is improved, and the service life of the keyboard switch is prolonged.

The metal spring structure 54 includes a stitch 541, a connecting portion 542, and a spring that are sequentially connected, where the spring includes a first spring portion 543 connected to the connecting portion 542, a bending portion 544 connected to the first spring portion 543, a second spring portion 545 connected to the bending portion 544, and a contact point 546 disposed at the second spring portion 545, the height of the first spring portion 543 is 5.4 mm, and the height of the second spring portion 545 is 4.2 mm. The second spring piece portion 545 is provided with two arc-shaped contact areas 547, and the distance between the two arc-shaped contact areas 547 is 5.7 mm.

Since the volume of sound is amplitude dependent; the larger the amplitude, the larger the volume, and the smaller the amplitude, the smaller the volume. When the button 55 drives the metal spring structure 54, the spring swings with the connection between the first spring 543 and the connecting portion 542 as a fulcrum, and the height of the first spring 543 of the metal spring structure 54 in this embodiment is lower than that of the metal spring structure 54 of the existing keyboard switch in the market, so that the swing amplitude of the metal spring structure 54 is reduced, that is, the amplitude is reduced, the sound emitted by the metal spring structure 54 is also smaller, noise generated by the keyboard switch spring can be effectively reduced, and the use experience of the keyboard switch is improved. In addition, the smaller size also reduces the amount of material used for the metal dome structure 54, which also saves production costs.

The distance between the two arc contact areas 547 of the metal dome structure 54 of this embodiment is lower than the distance between the two arc contact areas 547 of the existing metal dome structure 54 of the keyboard switch in the market, and because the metal dome structure 54 and the button 55 are actually contacted with the two arc contact areas 547, the swing amplitude of the metal dome structure 54 can be further reduced, that is, the amplitude is further reduced, the sound emitted by the metal dome structure 54 is further reduced, the noise generated by the dome of the keyboard switch can be further reduced, and the use experience of the keyboard switch is better improved. In addition, the smaller size also reduces the amount of material used for the metal dome structure 54, which also saves production costs.

In the present embodiment, the width of the connecting portion 542 is 7.24 mm.

The connecting portion 542 is used for firmly inserting the whole metal spring structure 54 into the keyboard switch housing, and the weight required to be borne by the connecting portion 542 is reduced due to the reduced size and the reduced weight of the spring, so that the size of the connecting portion 542 is reduced, the material consumption of the metal spring structure 54 is further reduced, and the production cost is saved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a reduce metal shrapnel structure of keyboard switch shell fragment sound, its characterized in that, including stitch, even material portion, the shell fragment that connects gradually, the shell fragment includes the first shell fragment portion of being connected with even material portion, the portion of bending of being connected with first shell fragment portion, the second shell fragment portion of being connected with the portion of bending and set up the contact point at second shell fragment portion, the height of first shell fragment portion is 3-5.8 millimeters.

2. The metal spring structure for reducing the sound of a keyboard switch spring according to claim 1, wherein the second spring part is provided with two arc-shaped contact areas, and the distance between the two arc-shaped contact areas is 5-6 mm.

3. The metal dome structure of claim 2, wherein the width of the connecting portion is 5-9 mm.

4. The utility model provides a reduce metal shrapnel structure of keyboard switch shell fragment sound, its characterized in that, including stitch, even material portion, the shell fragment that connects gradually, the shell fragment includes the first shell fragment portion of being connected with even material portion, the portion of bending of being connected with first shell fragment portion, and the second shell fragment portion of being connected with the portion of bending and set up the contact point at second shell fragment portion, the height of second shell fragment portion is 3-4.5 millimeters.

5. The metal spring structure for reducing sound of keyboard switch spring according to claim 4, wherein the second spring part is provided with two arc contact areas, and a distance between the two arc contact areas is 5-6 mm.

6. The metal dome structure of claim 5, wherein the width of the connecting portion is 5-9 mm.

7. A keyboard switch, comprising the metal dome structure of any one of claims 1-6, further comprising a base, an upper cover, a terminal, a button for driving the metal dome structure to be connected or disconnected with the terminal, and a spring for driving the button to return.

8. The keyboard switch of claim 7, wherein the button is provided with a first sloped portion and a second sloped portion, the first sloped portion and the second sloped portion being in contact with two arcuate contact areas, respectively.

9. The keyboard switch of claim 8, wherein the first angled portion is L-shaped in cross-section, the first angled portion being connected to a left side wall of the button and extending in a right direction of the button.

10. The keyboard switch of claim 8, wherein the second sloped portion is L-shaped in cross-section, the second sloped portion being connected to a right side wall of the button and extending in a left direction of the button.