CN2544399Y

CN2544399Y - Film press-key structure

Info

Publication number: CN2544399Y
Application number: CN 02234742
Authority: CN
Inventors: 陆国平
Original assignee: Asustek Computer Inc
Current assignee: Asustek Computer Inc
Priority date: 2002-05-10
Filing date: 2002-05-10
Publication date: 2003-04-09
Anticipated expiration: 2012-05-10

Abstract

A film key pad structure comprises a film key pad and a circuit board. The film key pad includes a four direction key and a plurality of swift keys; a plurality of contact switches are arranged on the surface of the circuit board, and the four direction key and a plurality of swift keys are connected with each other through a film and respectively correspond to a plurality of contact switches; an engraved hole is arranged on the circuit board, the upper part of which is corresponding to the center of the four direction key. The film key pad structure also comprises a bottom cover and a bugle, wherein the bottom cover is arranged below the engraved hole and forms a containing room with the four direction key; the bugle is arranged in the containing room and is electrically connected with the circuit board, and the space except the bugle of the containing room forms a sound box. The utility model can be applied in an electronic product to append audio function to the product without increasing product thickness, area or reducing product screen size.

Description

A kind of film key structure

Technical field

The utility model relates to a kind of press-key structure, is meant a kind of film key structure that is applied to electronic product especially.

Background technology

Along with constantly bringing forth new ideas of electronic technology and advancing by leaps and bounds of numeral science and technology, the 3C information products have become the some of life, or even the good assistant in the work.The 3C information products comprise notebook, mobile phone, PDA(Personal Digital Assistant) and palmtop computer (Palm) etc., and personal digital assistant is liked by the consumer extensively owing to have powerful, easy to operate and light and handy portative advantage.In order to satisfy the demands of consumers, with the online of personal digital assistant combining wireless, communication and video/audio function, be present stage personal digital assistant must the development direction.

Figure 1 shows that the schematic diagram of personal digital assistant, comprise a shell 10, a display floater 12 and a film key 14, the surface of shell 10 offers a plurality of and above-mentioned display floater 12 and the suitable opening of button 140 areas, display floater 12 and film key 14 are located at the opening part of shell 10 inside, wherein the button 140 on the film key 14 protrudes from the opening, therefore, the user can operate by 140 pairs of personal digital assistants of button of pushing protrusion, and read the shown information of personal digital assistant by display floater 12.

Fig. 2 A and Fig. 2 B are depicted as the film key structural representation of known technology; Film key 20 comprises one or four directionkeys 21 and a plurality of fast key 22 (Hot Key), above-mentioned button 21,22 utilizes film 23 to be connected to each other each other, and whole film key 20 forms with the integrally formed manufacturing of soft rubber material, wherein below four corners of four directionkeys 21, be respectively equipped with four salient points 24, similarly, below each fast key 22, also be provided with a salient point 24.The below of film key 20 then is provided with a circuit board 25, these circuit board 25 surfaces are provided with a plurality of touch switches 26, the salient point 24 of button 21,22 belows respectively with the touch switch 26 of circuit board 25 in correspondence with each other, when the user will instruct input to personal digital assistant, as long as button 21,22 salient point 24 that makes its below of exerting pressure is touched the touch switch 26 of circuit board 25, just can finish the instruction of personal digital assistant and import.Again, the instruction of input is after the process calculation process, and its result will be presented on the display floater (not shown), and the user can obtain needed information by this display floater.

Yet, present personal digital assistant all emphasizes to have the function of audio-visual or mobile phone, possessing one of above-mentioned most important assembly of function is exactly loudspeaker, the personal digital assistant of producing owing to present stage will have competitiveness again, must possess compact and screen is roomy etc. that characteristics can obtain liking of consumer, and known technology is in order to satisfy above-mentioned requirement, no matter be the component design of inside or the arrangement of external key, all the space of enclosure is made full use of, be difficult to have again additional space to place loudspeaker, do not increase the area of personal digital assistant integral body if loudspeaker will be arranged in the front, usable floor area that just must the sacrificial section display floater; If loudspeaker will be arranged in the front and not reduce the usable floor area of display floater, just must increase the space of the area of personal digital assistant integral body again as the loudspeaker setting; If loudspeaker will be arranged in the back side, then must increase the thickness of personal digital assistant integral body, in addition, loudspeaker are located at the back, and not only effect is bad, and when its with after function of cellular phone combines, sound is exported by its rear and is easy to be eavesdropped by other people during use.

In any case because the loudspeaker of known technology design, all be difficult to satisfy designing requirement compact and that screen is roomy, therefore the developer who is engaged in personal digital assistant or Related product all is devoted to the improvement research and development of product, in the hope of can designing the product that meets above-mentioned requirements, and then improve the market competitiveness.

The utility model content

Main purpose of the present utility model is to provide a kind of film key structure, can make personal digital assistant or associated electrical product at the thickness that does not increase product integral body, area or under the situation that does not reduce the product screen area, loudspeaker are installed in wherein make product have the function of pronunciation.

In order to achieve the above object, the utility model provides a kind of film key structure, a circuit board that comprises a film key and combine with this film key, this film key comprises one or four directionkeys and a plurality of fast key, this circuit board surface is provided with a plurality of touch switches, this four directionkeys and this a plurality of fast key all utilize film to interlink and respectively with this circuit board on touch switch in correspondence with each other, it is characterized in that: this circuit board is provided with one and engraves the hole, and this engraves the center of top, hole corresponding to this four directionkeys; And this film key structure also comprises a bottom plate and loudspeaker, this bottom plate be located at this circuit board engrave the below, hole and with the common accommodation space that forms of this four directionkeys; These loudspeaker are located in this accommodation space, and are electrically connected on this circuit board, and the space in this accommodation space beyond these loudspeaker forms audio amplifier.

In the such scheme, film key wherein is integrally formed by the soft rubber material.

In the such scheme, the bottom of four directionkeys wherein is provided with four salient points, and the bottom of these a plurality of fast key is respectively equipped with a salient point, and the salient point of this four directionkeys and these a plurality of fast key is corresponding with the touch switch on this circuit board respectively.

In the such scheme, formed redundant space constitutes the following audio amplifier of loudspeaker between loudspeaker wherein and the bottom plate.

In the such scheme, formed redundant space constitutes the last audio amplifier of loudspeaker between loudspeaker wherein and four directionkeys.

In addition, the magnitude relationship in audio amplifier space is to the quality of loudspeaker, the audio amplifier space quality of typhon more is good more, therefore, the utility model is in order to improve the quality of loudspeaker, four directionkeys and function key inside can be designed to hollow form, and the salient point that contacts with the touch switch of circuit board of reservation, and will connect each button between film bottom form guide groove, the mutual conducting of hollow space that makes each button inside also just relatively improves because the space of audio amplifier increases the quality of loudspeaker with the audio amplifier as loudspeaker.

Certainly, engrave the hole, must avoid forming the position of engraving the hole when circuit board conducting transmission line of the present utility model designs for circuit board can be formed.

The utility model film key structure applications is in personal digital assistant or associated electrical product, four directionkeys that loudspeaker are installed on film key combine with bottom plate in the accommodation space that forms, thereby, loudspeaker are placed in personal digital assistant or the associated electrical product produce audio not increasing integral thickness, area and not reducing under the situation of screen area.

Description of drawings

Fig. 1 is the schematic diagram of personal digital assistant;

Fig. 2 A and Fig. 2 B are the film key structural representation of known technology;

Fig. 3 is a circuit board schematic diagram of the present utility model;

Fig. 4 A and Fig. 4 B are film key structural representation of the present utility model;

Fig. 5 is the bottom view of film key structure of the present utility model.

Embodiment

The utility model discloses a kind of film key structure, utilize formed space, film key bottom that loudspeaker are placed in wherein, make the electronic product that matches with the utility model, personal digital assistant for example, can not increase integral thickness, area and not reduce under the situation of screen area, function with audio is now described in detail its preferred embodiment and relevant execution mode in conjunction with the accompanying drawings.

A kind of film key structure applications of the present utility model is in personal digital assistant or associated electrical product scope, but no matter be to be applied to that a kind of product, this product inside all must be provided with a circuit board 30 and film key respective outer side edges of the present utility model, and being equipped with a plurality of touch switches 32 and, the employed circuit board of present embodiment 30 surfaces engrave hole 34, as shown in Figure 3.

Fig. 4 A and Fig. 4 B are depicted as a kind of film key structural representation of the present utility model, comprise a film key 40, one bottom plate 41 and loudspeaker 42, wherein film key 40 is made up of one or four directionkeys 43 and a plurality of fast key 44, and above-mentioned

button

43,44 utilize film 45 to be connected to each other each other, whole again film key 40 is formed with integrally formed mode manufacturing by the soft rubber material, wherein four directionkeys 43 are respectively equipped with four salient points 46 in its bottom, four corners, similarly, fast key 44 also is provided with a salient point 46 at its bottom centre place, in the time of on film key 40 is incorporated into circuit board 30, each salient points 46 of film key 40 bottoms respectively with the touch switch 32 of circuit board 30 in correspondence with each other, and the center of four directionkeys 43 is corresponding to engraving directly over the hole 34, certainly, at four salient points 46 that are provided with four touch switches 32 and four directionkeys 43 all around too of engraving hole 34 in correspondence with each other.41 of bottom plates be located at circuit board 30 engrave 34 belows, hole, itself and four directionkeys 43 form an accommodation space and loudspeaker 42 can be placed in wherein, loudspeaker 42 are electrically connected on circuit board 30, loudspeaker 42 are after being placed in this accommodation space, formed redundant space can be used as the last audio amplifier 47 of loudspeaker 42 between itself and four directionkeys 43, and formed redundant space can be used as the following audio amplifier 48 of loudspeaker 42 between itself and the bottom plate 41.

Because the utility model utilizes four directionkeys below and the formed space of circuit board hollow out that loudspeaker are arranged in wherein, to personal digital assistant generally speaking, can not increase its thickness, area, also can not sacrifice the area of display floater, just can reach the function that audio is provided, for known technology, the utility model dark tool market competitiveness of can saying so.Yet, engrave the hole in order on circuit board, to form, when designing, circuit board conducting transmission line of the present utility model must avoid forming the zone of engraving the hole, take place with the situation of avoiding breaking.

In addition, because the magnitude relationship of audio amplifier is to the quality of loudspeaker, the audio amplifier quality of typhon more is good more, the utility model is in order to improve the quality of loudspeaker, as shown in Figure 5, four directionkeys 43 and fast key 44 inside are designed to hollow form, only keep the salient point 46 that it contacts with the touch switch of circuit board, and at the film 45 bottoms formation guide groove 49 that connects between each button, make each button 43, the formed space of 44 inner formed hollow spaces and four directionkeys, 43 belows (going up audio amplifier) conducting mutually, the last audio amplifier space of loudspeaker is increased greatly, and thus, the quality of loudspeaker also just relatively improves.

The above only is preferred embodiment of the present utility model; be not in order to limit practical range of the present utility model; and the utility model does not limit the field that is applied to personal digital assistant yet; anyly have the knack of this operator and all should belong to protection range of the present utility model in the modification of making without prejudice to spirit of the present utility model, therefore protection range of the present utility model is when being as the criterion with claims.

Claims

1, a kind of film key structure, a circuit board that comprises a film key and combine with this film key, this film key comprises one or four directionkeys and a plurality of fast key, this circuit board surface is provided with a plurality of touch switches, this four directionkeys and this a plurality of fast key all utilize film to interlink and respectively with this circuit board on touch switch in correspondence with each other, it is characterized in that:

This circuit board is provided with one and engraves the hole, and this engraves the center of top, hole corresponding to this four directionkeys; And

This film key structure also comprises a bottom plate and loudspeaker, and this bottom plate is located at engraving the below, hole and forming an accommodation space jointly with this four directionkeys of this circuit board; These loudspeaker are located in this accommodation space, and are electrically connected on this circuit board, and the space in this accommodation space beyond these loudspeaker forms audio amplifier.

2, film key structure as claimed in claim 1 is characterized in that described film key is that the soft rubber material is integrally formed.

3, film key structure as claimed in claim 1, the bottom that it is characterized in that described four directionkeys is provided with four salient points, and the bottom of these a plurality of fast key is respectively equipped with a salient point, and the salient point of this four directionkeys and these a plurality of fast key is corresponding with the touch switch on this circuit board respectively.

4, film key structure as claimed in claim 3, it is characterized in that described four directionkeys and this a plurality of fast key inside are designed to hollow form, only keep its with this circuit board on the corresponding salient point of touch switch, and at the film bottom formation guide groove that connects between each button, make inner formed hollow space of each button and the below mutual conducting in formed space of four directionkeys, constitute the audio amplifier space of loudspeaker jointly.

5, film key structure as claimed in claim 1 is characterized in that formed redundant space between described loudspeaker and the bottom plate constitutes the following audio amplifier of loudspeaker.

6, film key structure as claimed in claim 1 is characterized in that formed redundant space between described loudspeaker and four directionkeys constitutes the last audio amplifier of loudspeaker.