CN214672313U

CN214672313U - Novel UV bump button shell fragment

Info

Publication number: CN214672313U
Application number: CN202120889763.1U
Authority: CN
Inventors: 于晶晶
Original assignee: Qingdao Shan Yuan Electronics Co ltd
Current assignee: Qingdao Shanyuan Precision Electronic Technology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-09
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a novel UV bump button shell fragment, including button support, shell fragment main part, the bottom of button support is provided with the PCB board, the top of PCB board is provided with semicircular fixed film, it is provided with the shell fragment main part to match between PCB board and the fixed film, be provided with the bump in the middle of the top of fixed film, be provided with the depressed part that is used for holding the shell fragment main part on the fixed film, the top of fixed film is provided with the layer of feeling, be provided with the handle gasket that corresponds with the bump on the layer of feeling, the top of the layer of feeling is provided with the button panel, be provided with the button convex closure of outside arch on the button panel, the button convex closure corresponds from top to bottom with the bump; the spring plate main body is of a circular arch structure, the spring plate main body can be movably arranged in the concave part on the fixed film in a pressing mode, the inner surface of the spring plate main body is electroplated to form a silver coating, and the outer surface of the spring plate main body is covered with an anti-slip silica gel layer. The utility model discloses not only can increase the key journey, but also can strengthen the button and feel to guarantee the normal function of button.

Description

Novel UV bump button shell fragment

Technical Field

The utility model relates to a button shell fragment especially relates to a novel UV bump button shell fragment.

Background

The keyboard or the key is one of essential accessories of a computer, and the salient points are applied to all keys and switch electronic products, such as mobile phone keys, remote controller keys and the like. Traditional keyboard is because there is not structural limitation, and its button adopts scissors foot formula structure mostly, and scissors foot formula keyboard structure key journey is long, feels good, but, its shortcoming is exactly that the button is thicker, can't accomplish ultra-thinly. With the increasing development of electronic products, the increasing of miniaturization and light and thin degree, the keyboard of the traditional scissor-leg type structure can not meet the requirements of people for a long time, so that the ultrathin keyboard structure is produced, and the ultrathin keyboard structure in the prior art generally adopts DOME (namely metal elastic sheet) as a conducting element to conduct a circuit so as to reduce the thickness of the whole product.

At present, the DOME is usually installed together with a circuit board through a DOME installation film (usually adopting a polyester film, also called Mylar), the Mylar attached to the elastic sheet is a planar film structure with a single surface provided with glue, after the whole switch is attached to the keyboard, because the stretchability of the Mylar is not enough to offset the thickness of the elastic sheet, the elastic sheet is always in a pressed state after being attached, and the total height of the attached elastic sheet is reduced. Therefore, the whole key stroke is shortened, the hand feeling of the key is influenced, and the key on the upper side of the elastic sheet or the elastic sheet is deviated, so that the pressing hand feeling is influenced; meanwhile, after the button elastic sheet is glued, the pressing stroke of the button elastic sheet is shortened, so that the pressing experience of the button is poor, and even the normal function of the button is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a novel UV bump button shell fragment.

In order to solve the technical problem, the utility model discloses a technical scheme is: a novel UV bump key elastic sheet comprises a key support and an elastic sheet main body, wherein a PCB is arranged at the bottom of the key support, a semicircular fixed film is arranged above the PCB, the elastic sheet main body is arranged between the PCB and the fixed film in a matching manner, a bump is arranged in the middle of the top of the fixed film, a concave part for accommodating the elastic sheet main body is arranged on the fixed film, a hand feeling layer is arranged above the fixed film, a hand feeling gasket corresponding to the bump is arranged on the hand feeling layer, a key panel is arranged above the hand feeling layer, an outward protruding key convex hull is arranged on the key panel, and the key convex hull corresponds to the bump up and down;

the spring plate main body is of a circular arch structure, the spring plate main body can be movably arranged in the concave part on the fixed film in a pressing mode, the inner surface of the spring plate main body is electroplated to form a silver coating, and the outer surface of the spring plate main body is covered with an anti-slip silica gel layer.

Furthermore, a switch electrode which can be conducted so as to identify the key is arranged on the PCB.

Furthermore, the center of the inner surface of the spring main body is downward to form a groove, and the cross section of the spring main body is arc-shaped.

Further, the left side of shell fragment main part, right side symmetry are provided with the gasket, and two gaskets set up respectively on the PCB board, and the top of gasket all is connected with the fixed film and forms middle part fretwork portion, bottom and all meets through bond line and PCB board bonding.

Furthermore, the elastic sheet main body is arranged in the hollow part, and the area of the hollow part is larger than the area occupied by the elastic sheet main body in a natural state.

Furthermore, the cross section of the concave part on the fixed film is arc-shaped, and the fixed film is made of polyester film.

Furthermore, the sum of the height of the concave part on the fixed film and the thickness of the gasket is equal to or greater than the height of the elastic sheet main body in a natural state.

Further, the radius of the arc of the concave part is larger than or equal to that of the arc of the elastic sheet main body.

The utility model discloses not only can increase the key journey, but also can strengthen the button and feel to guarantee the normal function of button, have extensive suitability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a PCB board; 2. a spring plate main body; 3. fixing the film; 4. a hand-feeling layer; 5. a key panel; 6. salient points; 11. a gasket; 12. an adhesive layer; 21. a silver coating layer; 22. an anti-slip silica gel layer; 41. a hand feeling pad; 51. and (5) key convex hull.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the novel UV bump key elastic sheet comprises a key support and an elastic sheet main body 2, wherein a PCB 1 is arranged at the bottom of the key support, a semicircular fixed film 3 is arranged above the PCB 1, the elastic sheet main body 2 is arranged between the PCB 1 and the fixed film 3 in a matching manner, a bump 6 is arranged in the middle of the top of the fixed film 3, a concave part for accommodating the elastic sheet main body 2 is arranged on the fixed film 3, a hand feeling layer 4 is arranged above the fixed film 3, a hand feeling gasket 41 corresponding to the bump 6 is arranged on the hand feeling layer 4, a key panel 5 is arranged above the hand feeling layer 4, a key convex bag 51 protruding outwards is arranged on the key panel 5, and the key convex bag 51 corresponds to the bump 6 up and down; through the thickness of the hand feeling gasket 41 in the hand feeling layer, the stroke between the PCB and the elastic sheet main body is shortened, the hand feeling of the key is improved, and the service life of the elastic sheet main body is increased.

Wherein, the PCB board 1 is provided with a switch electrode which can be conducted so as to identify the key. PCB board 1 and shell fragment main part 2 set up relatively, when pressing shell fragment main part 2, make it take place the deformation, accessible shell fragment main part 2 switches on the switch electrode on PCB board 1.

The elastic sheet main body 2 is of a circular arch structure, the elastic sheet main body 2 can be movably arranged in the concave part of the fixed film 3 in a pressing mode, a groove is formed in the center of the inner surface of the elastic sheet main body 2 downwards, and the cross section of the elastic sheet main body 2 is arc-shaped.

Wherein, the inner surface of the shrapnel main body 2 is electroplated to form a silver coating 21, and the outer surface is covered with an anti-slip silica gel layer 22. The silver plating layer 21 is formed on the inner surface of the elastic sheet main body 2 by electroplating, and the silver has excellent conductivity, so that the conductivity of the elastic sheet main body 2 can be effectively enhanced, and the contact reaction of the key is more sensitive. The anti-skidding silica gel layer 22 covers the outer surface of the elastic sheet main body 2, so that the anti-skidding effect of the elastic sheet main body 2 can be effectively enhanced, and the use experience of a user is improved.

Wherein, the left side of shell fragment main part 2, right side symmetry are provided with gasket 11, and two gaskets 11 set up respectively on PCB board 1, and gasket 11 still has the effect of playing the guard action to the circuit on PCB board 1 except having isolation, and the top of gasket 11 all is connected with fixed film 3 and forms middle part fretwork portion, bottom and all meets through bond line 12 and PCB board 1 bonding.

Wherein, shell fragment main part 2 sets up in fretwork portion, and the area of fretwork portion is greater than the shared area under the shell fragment main part 2 natural state, also is greater than or equal to the shared area of shell fragment main part 2 under deformation state (when receiving the extrusion promptly), and fretwork department position can not cause any influence to the deformation of shell fragment main part 2 promptly.

Wherein, the cross section of the concave part on the fixed film 3 is arc-shaped, and the fixed film 3 is made of polyester film. The concave part can be formed by hot pressing of a hot-pressing die before assembly, and can also be processed by other processing technologies during specific implementation. The depression to the shell fragment main part 2 is reduced through the depressed part, can strengthen the key range on the one hand, and on the other hand can also strengthen the button and feel, makes the parameter of feeling and maintaining at the shell fragment itself, does not cause the value of feeling to reduce.

The sum of the height of the sunken part on the fixed film 3 and the thickness of the gasket 11 is equal to or larger than the height of the elastic sheet main body 2 in the natural state, so that the elastic sheet main body 2 can be smoothly installed on the PCB 1 through the fixed film 3, and cannot deform in the natural state and influence the normal use of the elastic sheet main body. The radius of the arc of the concave part is larger than or equal to that of the arc of the elastic sheet main body 2.

The salient points 6 enable the hand feeling stability of the product to be good, and even if the product is slightly deviated during DOME assembly, the hand feeling cannot be affected; many keys above the DOME can be designed into a plane, and do not need to be in a convex shape to contact the DOME; when the design thickness of the key needs to be increased, the height of the salient points can be used for filling.

The utility model discloses a set up the cylinder type bump in corresponding button position department, when pressing the shell fragment switch, can not influence because of the shell fragment off normal and feel, can improve the height of product simultaneously, more favourable when the space of design needs to be filled. In addition, the design structure is simple, the use is convenient, and the UV convex point key elastic sheet can be widely applied to various UV convex point key elastic sheets.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.

Claims

1. The utility model provides a novel UV bump button shell fragment which characterized in that: the elastic piece fixing structure comprises a key support and an elastic piece main body (2), wherein a PCB (1) is arranged at the bottom of the key support, a semicircular fixing film (3) is arranged above the PCB (1), the elastic piece main body (2) is arranged between the PCB (1) and the fixing film (3) in a matching manner, a convex point (6) is arranged in the middle of the top of the fixing film (3), a concave part for accommodating the elastic piece main body (2) is arranged on the fixing film (3), a hand feeling layer (4) is arranged above the fixing film (3), a hand feeling gasket (41) corresponding to the convex point (6) is arranged on the hand feeling layer (4), a key panel (5) is arranged above the hand feeling layer (4), a key convex bag (51) protruding outwards is arranged on the key panel (5), and the key convex bag (51) corresponds to the convex point (6) up and down;

the spring plate main body (2) is of a circular arch structure, the spring plate main body (2) can be movably arranged in a concave part on the fixed film (3) in a pressing mode, the inner surface of the spring plate main body (2) is electroplated to form a silver coating (21), and the outer surface of the spring plate main body is covered with an anti-slip silica gel layer (22).

2. The novel UV bump key dome as claimed in claim 1, wherein: the PCB (1) is provided with a switch electrode which can be conducted so as to identify the key.

3. The novel UV bump key dome as claimed in claim 2, wherein: the center of the inner surface of the spring plate main body (2) is downward to form a groove, and the cross section of the spring plate main body (2) is arc-shaped.

4. The novel UV bump key dome as claimed in claim 3, wherein: the left side of shell fragment main part (2), right side symmetry are provided with gasket (11), two gasket (11) set up respectively on PCB board (1), the top of gasket (11) all is connected with fixed film (3) and forms middle part fretwork portion, bottom and all meets through bond line and PCB board (1) bonding.

5. The novel UV bump key dome as claimed in claim 4, wherein: the elastic sheet main body (2) is arranged in the hollow part, and the area of the hollow part is larger than the area occupied by the elastic sheet main body (2) in a natural state.

6. The novel UV bump key dome as claimed in claim 5, wherein: the cross section of the sunken part on the fixed film (3) is arc-shaped, and the fixed film (3) is made of a polyester film.

7. The novel UV bump key dome as claimed in claim 6, wherein: the sum of the height of the sunken part on the fixed film (3) and the thickness of the gasket (11) is equal to or more than the height of the elastic sheet main body (2) in a natural state.

8. The novel UV bump key dome as claimed in claim 7, wherein: the radius of the arc of the concave part is larger than or equal to that of the arc of the elastic sheet main body (2).