CN216980414U - Key structure and keyboard - Google Patents

Abstract

The embodiment of the application discloses a key structure and a keyboard, wherein the key structure comprises a key main body, a PCBA (printed Circuit Board Assembly) plate, a piezoelectric ceramic plate and a support; the PCBA board is fixed on the key main body, an accommodating cavity is formed between the PCBA board and the key main body, and a trigger area is formed on the surface, far away from the PCBA board, of the key main body; extension parts are respectively formed at two ends of the piezoelectric ceramic plate electrically connected with the PCBA plate, a limiting groove matched with the extension parts is arranged in the accommodating cavity, and the extension parts are embedded in the limiting grooves; located in the receiving cavity the support overlies the plate of piezoelectric ceramic, and a side of the support remote from the plate of piezoelectric ceramic is in contact with the inner surface of the PCBA. The technical effect of the embodiment of the application lies in that the key structure is reasonable in structural design, convenient to use and capable of being well protected.

Description

Key structure and keyboard

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a key structure and a keyboard.

Background

The keyboard is a common input device in daily life, and is mainly used for instruction input of digital information equipment, such as a computer keyboard, a mobile phone keyboard and the like.

The key is an important part of a keyboard, and the conventional key has an unreasonable structural design and is difficult to trigger the function of the key when being pressed lightly; when the key is pressed by a large external force, the key is easily damaged, and the service life of the key is shortened.

SUMMERY OF THE UTILITY MODEL

An object of this application's embodiment is to provide a key structure and keyboard.

According to a first aspect of an embodiment of the present application, there is provided a key structure, including:

the key comprises a key main body and a PCBA, wherein the PCBA is fixed on the key main body, an accommodating cavity is formed between the PCBA and the key main body, and a trigger area is formed on the surface of the key main body, which is far away from the PCBA;

the two ends of the piezoelectric ceramic plate electrically connected with the PCBA plate are respectively provided with an extending part, a limiting groove matched with the extending parts is arranged in the accommodating cavity, the extending parts are embedded in the limiting groove, and the piezoelectric ceramic plate corresponds to the trigger area;

a bracket located within the receiving cavity the bracket overlying the piezoelectric ceramic plate and a side of the bracket remote from the piezoelectric ceramic plate being in contact with an inner surface of the PCBA plate.

Optionally, the piezoceramics board includes piezoceramics piece and stainless steel piece, piezoceramics piece is fixed on the stainless steel piece, the both ends of stainless steel piece are to keeping away from the direction of piezoceramics piece extends and forms the extension.

Optionally, one side of the support, which is close to the piezoelectric ceramic plate, is provided with a first groove, and the piezoelectric ceramic plate is embedded in the first groove.

Optionally, the key structure further includes a trigger portion, a receiving groove is disposed at a position of the receiving cavity close to the trigger area, and the trigger portion is disposed in the receiving groove.

Optionally, the trigger portion is a cylindrical structure.

Optionally, the trigger region is located in a middle of a surface of the key body.

Optionally, a side of the bracket proximate to the PCBA board is provided with a second recess.

Optionally, a piezoelectric ceramic plate is bonded to an inner surface of the key main body.

Optionally, the key structure further includes:

and the PCBA board is fixed on the key body through the screws.

According to a second aspect of the embodiments of the present application, there is provided a keyboard including the above-mentioned key structure.

One technical effect of the embodiment of the application is as follows:

in the embodiment of the application, the surface of the key body, which is far away from the PCBA board, forms a trigger area; through set up piezoelectric ceramic plate in the chamber that holds that forms at button main part and PCBA board, make piezoelectric ceramic plate and trigger regional corresponding, thereby make the user press and trigger the region, then trigger the region and exert pressure to piezoelectric ceramic plate, piezoelectric ceramic plate produces the capacitance variation of self, form the condition that shock pulse allows, reach signal transmission's function, thereby trigger the function of button, the operation is very simple, need not apply too big pressure to the button, this button structure that can be better.

In addition, the support is stacked on the piezoelectric ceramic plate, the support can better protect the piezoelectric ceramic plate, and even if a user mistakenly presses the trigger area with a large force, the support can better support the piezoelectric ceramic plate and the PCBA plate, so that the key structure can be protected, the key structure is effectively prevented from being damaged, and the service life of the key structure is prolonged.

Further features of the present application and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which is to be read in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

Fig. 1 is an exploded schematic view of a key structure according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a triggering portion of a key structure according to an embodiment of the present disclosure;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a cross-sectional view of a key structure provided in an embodiment of the present application.

In the figure: 1. a key body; 101. an accommodating chamber; 1011. a limiting groove; 1012. accommodating grooves; 102. a trigger area; 2. PCBA board; 3. a piezoelectric ceramic plate; 31. piezoelectric ceramic plates; 32. a stainless steel sheet; 321. an extension portion; 4. a support; 41. a first groove; 42. a second groove; 5. a trigger section; 6. and (4) screws.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1 to 4, according to a first aspect of the embodiments of the present application, a key structure is provided, which can implement triggering of a key function by touching with a light touch, and is very simple in operation.

Specifically, the key structure includes a key main body 1, a PCBA board 2, a piezoceramic board 3, and a support 4. The piezoelectric ceramic plate 3 is used for sensing the touch pressure of a user on the key main body 1, and meanwhile, the piezoelectric ceramic plate 3 generates self capacitance change to form a condition that oscillation pulses are allowed to pass through, so that a signal transmission function is achieved. The PCBA board 2 triggers the functions of the keys according to the signals transmitted by the piezoelectric ceramic board 3.

Further specifically, the PCBA board 2 is fixed to the key main body 1, an accommodating cavity 101 is formed between the PCBA board 2 and the key main body 1, a trigger area 102 is formed on a surface of the key main body 1, which is far away from the PCBA board 2, and the trigger area 102 facilitates a user to touch to realize pressing and triggering of the key structure. The accommodating cavity 101 is used for bearing various parts such as the piezoelectric ceramic plate 3 and the bracket 4, and therefore the assembly of the key structure is convenient to realize.

In the embodiment of the present application, the two ends of the piezoelectric ceramic plate 3 electrically connected to the PCBA board 2 are respectively formed with an extension portion 321, a limit groove 1011 matching with the extension portion 321 is disposed in the accommodating cavity 101, the extension portion 321 is embedded in the limit groove 1011, and the piezoelectric ceramic plate 3 corresponds to the trigger area 102; the extension 321 is embedded in the limiting groove 1011 to achieve quick mounting of the piezoelectric ceramic plate 3 on the key main body 1. The bracket 4 is stacked on the piezoelectric ceramic plate 3 within the receiving chamber 101, and a side of the bracket 4 remote from the piezoelectric ceramic plate 3 is in contact with an inner surface of the PCBA board 2. The support 4 can support the piezoelectric ceramic plate 3, and can better protect the piezoelectric ceramic plate 3.

In the embodiment of the application, the surface of the key body 1 far away from the PCBA board 2 forms a trigger area 102; through set up piezoelectric ceramic plate 3 in the chamber 101 that holds that forms at button main part 1 and PCBA board 2, make piezoelectric ceramic plate 3 corresponding with trigger area 102, thereby make the user press trigger area 102, then trigger area 102 and exert pressure to piezoelectric ceramic plate 3, piezoelectric ceramic plate 3 produces the capacitance change of self, form the condition that the shock pulse was allowed to pass through, reach signal transmission's function, thereby trigger the function of button, the operation is very simple, need not exert too big pressure to the button, this button structure that can be better.

In addition, the support 4 is stacked on the piezoelectric ceramic plate 3, the support 4 can better protect the piezoelectric ceramic plate 3, and even if a user presses the trigger area 102 with a large force by mistake, the support 4 can better support the piezoelectric ceramic plate 3 and the PCBA plate 2, so that the key structure can be protected, the key structure is effectively prevented from being damaged, and the service life of the key structure is prolonged.

Optionally, the piezoelectric ceramic plate 3 includes a piezoelectric ceramic plate 31 and a stainless steel plate 32, the piezoelectric ceramic plate 31 is fixed on the stainless steel plate 32, and two ends of the stainless steel plate 32 extend in a direction away from the piezoelectric ceramic plate 31 to form an extension 321.

In the above embodiment, the stainless steel sheet 32 can protect the piezoelectric ceramic plate 31 well, and the piezoelectric ceramic plate 31 is fixed on the stainless steel sheet 32, so that the piezoelectric ceramic plate 3 can be fixed in the accommodating chamber 101 firmly and quickly, and the assembling time is saved.

Optionally, a first groove 41 is formed on one side of the support 4 close to the piezoelectric ceramic plate 3, and the piezoelectric ceramic plate 31 is embedded in the first groove 41.

In the above embodiment, the first groove 41 can better protect the piezoelectric ceramic plate 31, effectively prevent a user from pressing the piezoelectric ceramic plate 31 excessively through the trigger region 102, ensure the stability of the function of the piezoelectric ceramic plate 31, and improve the service life of the piezoelectric ceramic plate 31.

Optionally, the key structure further includes an activation portion 5, a receiving groove 1012 is disposed at a position of the receiving cavity 101 close to the activation region 102, and the activation portion 5 is disposed in the receiving groove 1012.

In the above embodiment, by providing the trigger 5 in the accommodation groove 1012, it is facilitated to quickly position the mounting position of the trigger 5, facilitating the mounting of the trigger 5. Simultaneously, press piezoelectric ceramic plate 3 through trigger part 5 to make piezoelectric ceramic plate 3 can respond to user's the state of triggering better, thereby be convenient for realize pressing to the button structure and trigger.

Optionally, the trigger part 5 is a cylindrical structure. This not only facilitates the installation of the trigger 5 in the accommodation groove 1012, but also simplifies the structure of the trigger 5, contributing to cost saving.

Optionally, the trigger region 102 is located in the middle of the surface of the key body 1. This is convenient for the user to press the trigger to the button structure, has improved user's use experience.

Optionally, a side of the bracket 4 adjacent to the PCBA plate 2 is provided with a second recess 42. The second groove 42 helps to reduce the mass of the bracket 4, thereby effectively reducing the mass of the bracket 4 on the premise of ensuring the supporting function of the bracket 4, reducing the weight of the key structure, conforming to the use habit of a user and having higher use comfort.

Alternatively, a piezoelectric ceramic plate 3 is bonded to the inner surface of the key main body 1. This makes the attachment of the piezoelectric ceramic plate 3 to the key main body 1 very simple, and facilitates quick and stable fixing of the piezoelectric ceramic plate 3 to the key main body 1.

Optionally, the key structure further includes:

and the PCBA board 2 is fixed on the key body 1 through the screws 6.

In the above embodiment, the PCBA board 2 is fixed to the key main body 1 by the screws 6, and the operation is simple. Preferably, the screws 6 are self-tapping screws, which help to firmly fix the PCBA board 2 to the key main body 1.

In a specific embodiment, the corners of the PCBA board 2 are fixed to the key main body 1 by screws 6, respectively, which makes the connection of the PCBA board 2 and the key main body 1 very stable.

According to a second aspect of the embodiments of the present application, there is provided a keyboard including the above-mentioned key structure. The keyboard does not need to apply excessive pressure to the keys, and the key structure can be better. Meanwhile, the keyboard can better protect the key structure, effectively prevent the key structure from being damaged and prolong the service life of the key structure.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (10)

1. A key structure, comprising:

the key comprises a key body (1) and a PCBA (printed circuit board assembly) board (2), wherein the PCBA board (2) is fixed on the key body (1), a containing cavity (101) is formed between the PCBA board (2) and the key body (1), and a trigger area (102) is formed on the surface of the key body (1) far away from the PCBA board (2);

the piezoelectric ceramic plate (3) is electrically connected with the PCBA (2), extending parts (321) are formed at two ends of the piezoelectric ceramic plate (3), a limiting groove (1011) matched with the extending parts (321) is formed in the accommodating cavity (101), the extending parts (321) are embedded in the limiting groove (1011), and the piezoelectric ceramic plate (3) corresponds to the trigger area (102);

a support (4) located within the receiving cavity (101) the support (4) is superposed on the piezoelectric ceramic plate (3), and a side of the support (4) remote from the piezoelectric ceramic plate (3) is in contact with an inner surface of the PCBA plate (2).

2. The key structure of claim 1,

piezoelectric ceramic board (3) are including piezoelectric ceramic piece (31) and stainless steel piece (32), piezoelectric ceramic piece (31) are fixed on stainless steel piece (32), the both ends of stainless steel piece (32) are to keeping away from the direction of piezoelectric ceramic piece (31) extends and forms extension (321).

3. A key structure according to claim 2, characterized in that the side of the holder (4) close to the piezoceramic plate (3) is provided with a first groove (41), the piezoceramic plate (31) being embedded in the first groove (41).

4. The key structure according to claim 1, further comprising an activation portion (5), wherein a receiving groove (1012) is provided at a position of the receiving cavity (101) adjacent to the activation region (102), and the activation portion (5) is disposed in the receiving groove (1012).

5. A key structure according to claim 4, characterised in that said activation part (5) is of cylindrical configuration.

6. A key structure according to claim 1, characterized in that said activation area (102) is located in the middle of the surface of said key body (1).

7. A key structure according to claim 1, characterised in that a side of the carrier (4) adjacent to the PCBA board (2) is provided with a second recess (42).

8. A key structure according to claim 1, characterized in that a piezoelectric ceramic plate (3) is bonded to the inner surface of said key body (1).

9. The key structure of claim 1, further comprising:

the PCBA board (2) is fixed on the key body (1) through the screws (6).

10. A keyboard comprising a key structure according to any one of claims 1 to 9.

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