CN217306370U - Low-press-noise key switch - Google Patents

Abstract

The utility model discloses a low button switch who presses down noise, including casing, key axle, shell fragment and spring, the casing in be provided with the cavity, key axle, shell fragment, spring setting in the cavity, key axle one end be the axis body, the casing in be provided with the guide axle sleeve who matches with it, the axis body setting in the guide axle sleeve, the key axle other end stretch out in the casing, the spring housing establish outside axis body and guide axle sleeve, still including elastic gasket, elastic gasket set up in the guide axle sleeve bottom of key axle axis body bottom and casing, the spring both ends respectively with set up the elastic gasket butt in the guide axle sleeve bottom of the elastic gasket of key axle axis body bottom and casing. The utility model discloses a mode of addding the resilient pad has reduced the noise when mechanical key switch presses, improves mechanical key switch's quality through comparatively simple and economic mode.

Description

Low-pressing-noise key switch

Technical Field

The utility model relates to a mechanical keyboard field, in particular to low key switch who presses noise.

Background

At present, with the popularization of mechanical keyboards, the number of scenes in which the mechanical keyboards are used is increased, and besides the traditional mechanical keyboards for games, the mechanical keyboards are required to make crisp key sounds or achieve quieter key experience for office and household use, and the key sounds are required to be achieved through structures in keys. If a crisp button sound is required, a sound generating device is required to be arranged in the switch, such as Chinese patent CN 2017202474143. Or a quieter key experience is pursued, the tolerance of each part in the switch needs to be reduced, the tightness is improved, and the pressing noise is reduced.

However, in any of the above-mentioned key scenarios, a single sound or silence is desired, and the noise existing during the pressing process of the key switch must be reduced to give the user a pure use experience.

In the key switch, one of the reasons for the noise is that the spring is compressed during the downward pressing process of the key shaft, and certain noise is generated during the instantaneous compression process of the spring, and the reason for the sound production mainly comprises the following two aspects:

1. compression tremor. When the spring is compressed instantaneously, the spring contracts in the compression direction, and after being compressed, the spring not only converts into elastic potential energy, but also has a part of kinetic energy to form vibration. Since the spring is fixed between the key shaft and the housing, the energy of this portion is dissipated by the wave, creating noise.

2. Pressing and rubbing. When the spring is compressed instantly, because the diameters of the guide shaft sleeve and the key shaft of the shell are not tightly connected with the spring, a certain gap is reserved for facilitating installation, and when the spring is compressed, the spring can slide in the gap, namely in the horizontal direction, to form noise; in the vertical direction, since the spring is compressed by the downward pressure of the key shaft, a certain frictional noise is generated at the position where the key shaft contacts the spring and the position where the housing contacts the spring, since the spring is forced and both are rigid structures.

Among the above-mentioned technical problems, the reasons for the generation of spring pressing noise can be summarized, one is that the pressing friction generates noise, and the other is that the spring has vibration after being deformed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned technical problem, a low button switch who presses down noise is provided, including casing, key axle, shell fragment and spring, the casing in be provided with the cavity, key axle, shell fragment, spring setting in the cavity, key axle one end be the axis body, the casing in be provided with the uide bushing that matches with it, the axis body setting in the uide bushing, the key axle other end stretch out in the casing, the spring housing establish outside axis body and uide bushing, still including elastic gasket, elastic gasket set up in the axis body bottom of key axle and the uide bushing bottom of casing, the spring both ends respectively with set up the elastic gasket butt in the axis body bottom of key axle and the uide bushing bottom of casing. By additionally arranging the elastic gasket, on one hand, the problem that noise is generated due to the fact that rigid structures are arranged between the shell and the spring and between the key shaft and the spring when the key shaft is pressed is solved, meanwhile, the problem that the spring is displaced when the spring deforms under stress is solved, and the problem of transverse noise is also solved; in addition, because the elastic gasket can absorb part of vibration, the vibration generated after the spring is deformed can be absorbed by the elastic gasket, and the noise generated by the vibration is reduced

Preferably, the axis body bottom of key axle is provided with first holding tank, resilient pad set up in first holding tank. The holding tank is convenient for set up the gasket, and difficult emergence displacement is convenient for process.

Preferably, the bottom of the guide shaft sleeve of the shell is provided with a second accommodating groove, and the elastic gasket is arranged in the second accommodating groove.

Preferably, the resilient gasket is annular. The annular elastic gasket can reduce the utilization of space, and the colleagues can ensure the abutting connection with the tail end of the spring.

Preferably, the elastic gasket is a silicone sheet.

Preferably, the elastic gasket is integrated with the bottom of the body of the key shaft or the bottom of the guide shaft sleeve of the housing.

Preferably, the elastic pad is a rubber sheet.

Preferably, the housing is composed of an upper cover and a base.

The utility model discloses has following technological effect:

1. the spring noise reduction is significant. Through the elastic gasket, the problem that the spring transversely and vertically sends out the noise in pressing the in-process has directly been solved, because the elastic gasket itself has elasticity in addition, consequently can absorb the spring in the tremble of compression in-process, has reduced the noise that the tremble said to send. The production of noise has greatly been reduced on the whole for mechanical switch presses down the in-process spring noise and obtains splendid improvement, to the sight that requires the button sound, can make the sound purer, can further reduce the sound of button in the scene that requires the silence of button, and the use that improves key switch is experienced on the whole.

2. The processing is convenient. For the increase of the elastic gasket, an elastic colloid or an elastic seat can be formed on the shell and the key shaft by adopting an elastic gasket assembling or secondary injection molding mode, so that the effect of the elastic gasket is realized.

3. The structure change is small, and the existing process is not influenced. This institutional advancement does not influence current case switch structure, does not influence the current mould structure of current product promptly, only needs add the process that the secondary was moulded plastics or the equipment of resilient pad, can reduce the button noise, improves the product quality, has very strong practicality.

Drawings

Fig. 1 is an exploded view of example 1 of this patent.

Fig. 2 is a perspective view of a key shaft in embodiment 1 of this patent.

Fig. 3 is a perspective view of the lower housing in embodiment 1 of this patent.

Fig. 4 is a schematic cross-sectional view of the embodiment 1 of this patent.

Wherein, 1 is the casing, 11 is the upper cover, 12 is the base, 121 is the guide shaft cover, 2 is the key axle, 21 is the axis body, 3 is the shell fragment, 4 is the spring, 5 is the elastic gasket.

Detailed Description

The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more clearly understand the advantages and features of the present invention, and to clearly define the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "head", "tail", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

Example 1

In this embodiment, as shown in fig. 1, the portable electronic device includes a housing 1, the housing 1 includes an upper cover 11 and a base 12, the upper cover 11 and the base 12 can be combined with each other to form the housing 1, a cavity is formed between the upper cover 11 and the base 12, and a resilient plate 3, a key shaft 2 and a spring 4 are disposed in the cavity. One end of key shaft 2 is provided with axis body 21, is provided with guide shaft sleeve 121 on the base 12, and key shaft 2 can insert in guide shaft sleeve 121 for key shaft 2 can be along guide shaft sleeve 121's direction motion, and upper cover 11 is extended to the other end of key shaft 2, and the person of facilitating the use presses or matches with the key cap. As shown in fig. 2, a first accommodating groove is formed in the bottom of the shaft body 21 of the key shaft 2, an elastic gasket 5 is arranged in the first accommodating groove, and the elastic gasket 5 is specifically in a circular ring shape and is arranged around the bottom of the shaft body 21. As shown in fig. 3, a second receiving groove is formed in the bottom of the guide shaft sleeve of the base 12 of the housing 1, an elastic gasket 5 is arranged on the second receiving groove, and the elastic gasket 5 is circular and is arranged around the bottom edge of the guide shaft sleeve 121. A spring 4 is fitted around the key shaft 2 and the guide bush 121, one end of the spring 4 abuts against the elastic pad 5 at the bottom of the shaft body 21 of the key shaft 2, and the other end of the spring 4 abuts against the elastic pad 5 at the bottom of the guide bush 121 of the base 12 of the housing 1.

In this embodiment, elastic gasket 5's the mode of setting is placed for the manual work, cuts elastic gasket 5 of corresponding size in advance according to the specification of predetermineeing first holding tank and second holding tank promptly, places in first standing groove or the second standing groove that corresponds through manual work or equipment again, installs spring 4 again. In this embodiment, the elastic pad 5 is a silicon sheet.

As shown in fig. 4, after the actual assembly, the upper end of the spring 4 abuts against the elastic washer 5 at the bottom of the shaft body 21 of the key shaft 2, and the lower end of the spring 4 abuts against the elastic washer 5 of the guide boss 121 of the base 12. When the key shaft 2 is pressed, the spring 4 is compressed downwards under the pressure of the key shaft 2, and at the moment, because the upper end and the lower end of the spring 4 are both contacted with the elastic gasket 5, the surface of the elastic gasket 5 is deformed to a certain extent, so that the upper end and the lower end of the spring 4 are both slightly sunk into the elastic gasket 5, the rotation or displacement can not occur in the compression process, and the problem of noise generated by the surface friction of the spring 4 and the key shaft 2 or the base 12 can not occur.

The actual pressing is fast, so after the spring 4 is compressed to the limit, the spring 4 itself still has the condition of vibration, and the vibration is caused by the vibration of the spring 4 when the spring is compressed fast, so that the vibration cannot be avoided, namely, the weak noise caused by the vibration cannot be avoided. In the present embodiment, since the upper and lower ends of the spring 4 are abutted to the elastic pad 5, the vibration is transmitted to the elastic pad 5, and the elastic pad 5 absorbs a part of the vibration, that is, the vibration degree is reduced, and the vibration noise is directly reduced.

After the pressing is finished, the user releases the pressing of the key shaft 2, the key shaft 2 is reset under the driving of the reset of the spring 4, and one-time pressing is finished, in the whole process, the elastic gasket 5 still keeps the abutting joint with the spring 4, so that the spring 4 still cannot generate horizontal position deviation in the resetting process.

In this embodiment, the elastic pad 5 is a silicon sheet. According to the existing production flow mode, the upper cover 11 and the base 12 of the shell 1 are produced, the pre-cut circular silica gel sheet is placed into the upper cover 11 and the base 12, and then the spring 4 is sleeved. The production mode can reduce the noise of the keys and improve the quality by adding the procedure of placing the silica gel sheet under the condition of not changing the existing production flow.

Example 2

The difference between this embodiment and embodiment 1 is that in this embodiment, the elastic pad 5 is a rubber sheet, the installation method is a two-shot molding method, and the elastic pad 5 and the key shaft 2 or the base 12 are an integral structure. Specifically, after the upper cover 11 and the base 12 of the housing 1 are produced according to the existing production mode, secondary injection molding is carried out, and rubber sheets are directly generated at corresponding positions. Through the secondary injection molding production, the rubber sheet can be tightly connected with the key shaft 2 or the base 12 and is not easy to fall off.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.

Claims (8)

1. A low-pressing-noise key switch comprises a shell (1), a key shaft (2), an elastic sheet (3) and a spring (4), wherein a cavity is formed in the shell (1), the key shaft (2), the elastic sheet (3) and the spring (4) are arranged in the cavity, one end of the key shaft (2) is a shaft body (21), a guide shaft sleeve (121) matched with the shell (1) is arranged in the shell (1), the shaft body (21) is arranged in the guide shaft sleeve (121), the other end of the key shaft (2) extends out of the shell (1), the spring (4) is sleeved outside the shaft body (21) and the guide shaft sleeve (121), the low-pressing-noise key switch is characterized by further comprising an elastic gasket (5), the elastic gasket (5) is arranged at the bottom of the shaft body (21) of the key shaft (2) and the bottom of the shaft sleeve of the shell (1), and two ends of the spring (4) are respectively connected with the elastic gasket (5) and the shell which are arranged at the bottom of the shaft body (21) of the key shaft (2) 1) The elastic gasket (5) at the bottom of the guide shaft sleeve (121) is abutted.

2. A low-noise push button switch according to claim 1, wherein a first receiving groove is formed at the bottom of the shaft body (21) of the key shaft (2), and the elastic gasket (5) is disposed in the first receiving groove.

3. A low push-down noise key switch according to claim 1, wherein a second receiving groove is formed at the bottom of the guide sleeve (121) of the housing (1), and the elastic pad (5) is disposed in the second receiving groove.

4. A low push-noise push-button switch according to claim 1, characterized in that said resilient pad (5) is annular.

5. A low-noise push-button switch according to claim 4, characterized in that said elastic pad (5) is a silicone sheet.

6. A low push-down noise key switch according to claim 4, wherein the resilient pad (5) is integrally formed with the bottom of the body (21) of the key shaft (2) or the bottom of the guide sleeve (121) of the housing (1).

7. A low push-noise keyswitch according to claim 1, wherein said resilient pad (5) is a rubber sheet.

8. A low push-noise key switch according to claim 1, characterized in that said housing (1) is composed of an upper cover (11) and a base (12).

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