TWM449301U - Cantilevered keyboard apparatus - Google Patents

Description

Cantilever keyboard device

The present invention relates to a keyboard device, and more particularly to a cantilever keyboard device.

In order to meet the trend of light, thin, short and small design of modern technology products, today's general keyboards use a Scissor structure for key lifts, but such keyboard design requires a scissor-foot structure under each keycap. The weight of the keyboard is hard to be reduced, and the assembly procedure is difficult to simplify.

Therefore, there are also cantilever keyboard designs that do not have a scissor-foot structure on the market, such as the Republic of China No. M407428 announcement number, the M407430 announcement number or the M427616 announcement number, etc., which are disclosed by the direct integration of the majority of the button frame. The cantilever type button can further reduce the weight and simplify the assembly process without the need to set the scissor foot structure, and the cantilever type button does not need to design a hook corresponding to the scissor foot structure on the bottom surface, which is advantageous for miniaturization of the area.

However, the conventional keyboard, whether using a scissor-foot structure or a cantilever design, in order to maintain a certain typing feel, it is necessary to provide sufficient pressing stroke and force feedback for each button, and therefore, will be set under each button. Elastic domes made of rubber or silicone (commonly known as Rubber Dome). Due to material properties and process limitations, the height of the parts itself is 2.2mm or more. If necessary, add the base plate, circuit board, buttons and other necessary Structure, layered with a certain stack height, whether it is an external keyboard or a built-in keyboard assembled in a notebook Use, still has the shortcomings of not being thin and light.

Therefore, the purpose of the present invention is to provide a cantilever type keyboard device that meets the requirements of thin and light design.

Therefore, the novel cantilever type keyboard device comprises a bottom plate, a circuit board, an actuating unit and a button unit. The circuit board is disposed above the bottom plate and includes a plurality of switches.

The actuating unit includes a slide plate disposed above the circuit board, and a plurality of metal elastic domes respectively protruding from the slide plate and located above the switches, and the elastic domes can be respectively actuated by pressure deformation Corresponding switch.

The button unit includes a connecting frame disposed above the actuating unit, a through hole spaced apart from the connecting frame, and a plurality of key bodies respectively disposed on the through holes and one side edge of which is connected to the connecting frame.

The stacking height of the bottom plate, the circuit board, the actuating unit and the button unit is no more than 2 mm, and the key bodies can be pressed down against the elastic domes and actuate the corresponding switches.

The effect of the novel is that compared with the rubber with a height of 2.2 mm or more, or the silicone elastomer, the novel elastic metal dome can greatly reduce the height of the component of the force feedback structure, and then cooperate with the same. The cantilever design of the key body can make the stack height of the bottom plate, the circuit board, the actuating unit and the button unit not more than 2 mm, and can meet the demand of the thin and light design while maintaining the typing feel.

The foregoing and other technical contents, features and effects of the present invention are The detailed description of a preferred embodiment of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. FIG.

Referring to FIG. 1, FIG. 2 and FIG. 3, a preferred embodiment of the cantilever type keyboard device comprises a metal base plate 1, a circuit board 2, an actuating unit 3, a spacer frame 4, and a button unit 5. The circuit board 2 is disposed above the bottom plate 1 and includes a number of switches 21.

The actuation unit 3 includes a carrier 31 that is disposed above the circuit board 1 and is an electrical insulator, and a plurality of metal elastic domes 32 respectively protruding from the carrier 31 and located above the switches 21, and a plurality of An elastic cushion 33 disposed above the elastic domes 32.

The elastic domes 32 can be respectively deformed by pressure to actuate the corresponding switches 21. The elastic cushions 33 are used to buffer the reaction force of the fingers when the user types the keys, and the comfort of use can be improved.

The spacer frame 4 is an electrical insulator and is adhesively disposed on the carrier 31 by the double-sided adhesive 6 .

The button unit 5 includes a connecting frame 51, a through hole 52 spaced apart from the connecting frame 51, and a plurality of key bodies 53 respectively disposed on the connecting holes 51 and having one side edge connected to the connecting frame 51.

The connecting frame 51 is disposed above the actuating unit 3 and the spacer frame 4 and has a shape corresponding to the shape of the spacer frame 4, and is adhered to the top surface of the spacer frame 4 by using the double-sided adhesive 6, thereby the spacer frame 4 is interposed between the carrier 31 and the connecting frame 51.

The key bodies 53 each have a pressing portion spaced apart from the connecting frame 51. 54 and a plurality of intervals are arranged on one side edge of the pressing portion 54 and the pressing portion 54 and the cantilever portion 55 of the connecting frame 51 are connected.

The key body 53 may directly mark the graphic or character by means of printing and laser engraving on the top, or may lay a whole film of the corresponding graphic character pre-formed above the button unit 5, or the button The unit 5 is placed in a mold for injection molding so that the outer circumference of each of the key bodies 53 is respectively covered with corresponding graphic characters.

The number of the cantilever portions 55 may vary depending on the size of the different key bodies 53. For example, a blank key, a Shift key, or the like may be provided with a plurality of cantilever portions 55, and a letter key or The key body 53 having a small aspect ratio and the like, such as a numeric keypad, is only required to provide two cantilever portions 55. By flexibly adjusting the number of the cantilever portions 55, the structural strength of the key bodies 53 and the connection frame 51 can be enhanced. , thereby increasing the reliability of the use of the product.

Referring to FIG. 3 and FIG. 4, when pressing, the pressing portions 54 of the key bodies 53 can be pressed by the user's fingers to press the hem and pressed downward to the elastic cushions 33, so that the elastic domes 32 are subjected to the elastic domes 33. The pressure is deformed to actuate the corresponding switch 21. After the user's finger leaves the key body 53, the elastic dome 32 and the material of the cantilever portion 55 of the key body 53 are used to restore the elastic force, so that the key bodies 53 can be respectively reset to the uncompressed state. The original location.

Since the elastic domes 32 are made of a metal material, compared with conventional rubbers having a height of 2.2 mm or more, or the silicone elastomer, the present invention can reduce the height of the parts of the force feedback structure, and cooperate with the cantilever of the key bodies 53. So that the stack height H of the bottom plate 1, the circuit board 2, the actuation unit 3, the spacer frame 4, the button unit 5, and the double-sided adhesives 6 are not More than 2 mm, preferably, the stack height H of the present embodiment can be further reduced to about 1.5 mm after reasonably reducing the material thickness of the remaining parts.

In summary, by using the metal elastic dome 32 and the cantilever button design, the height of the component can be reduced, so that the stack height H of the present invention is no more than 2 mm, and the product can be designed to meet the slim design while maintaining the typing feel. Demand, so it can really achieve the creative purpose of this new type.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the novel patent application scope and the novel description content, All remain within the scope of this new patent.

1‧‧‧floor

2‧‧‧ boards

21‧‧‧ switch

3‧‧‧Activity unit

31‧‧‧ slides

32‧‧‧Flexible Dome

33‧‧‧Flexible cushions

4‧‧‧ interval box

5‧‧‧Key unit

51‧‧‧Connection box

52‧‧‧through holes

53‧‧‧Key body

54‧‧‧ Pressing Department

55‧‧‧Cantilever

6‧‧‧Double-sided adhesive

H‧‧‧Stack height

1 is a perspective view of a preferred embodiment of the present invention; FIG. 2 is a partial exploded perspective view of the preferred embodiment; FIG. 3 is a partial cross-sectional view of the preferred embodiment; A schematic diagram of the operation of the preferred embodiment.

1‧‧‧floor

2‧‧‧ boards

21‧‧‧ switch

3‧‧‧Activity unit

31‧‧‧ slides

32‧‧‧Flexible Dome

33‧‧‧Flexible cushions

4‧‧‧ interval box

5‧‧‧Key unit

51‧‧‧Connection box

52‧‧‧through holes

53‧‧‧Key body

54‧‧‧ Pressing Department

55‧‧‧Cantilever

6‧‧‧Double-sided adhesive

Claims (6)

A cantilever type keyboard device comprises: a bottom plate; a circuit board disposed above the bottom plate and including a plurality of switches; the actuating unit comprises a slide piece laid on the upper side of the circuit board, and the plurality of protrusions are respectively protruded from the slide piece And a metal elastic dome above the switches, wherein the elastic domes are respectively deformed by pressure to actuate the corresponding switches; and a button unit includes a connection frame disposed above the actuation unit, and the number of intervals a through hole arranged in the connecting frame, and a plurality of key bodies respectively disposed on the connecting holes and having one side edge connected to the connecting frame; wherein the bottom plate, the circuit board, the actuating unit and the button unit The stacking height is no more than 2 mm, and the key bodies can be pressed against the hem and pressed down against the elastic domes respectively to actuate the corresponding switches. The cantilever type keyboard device according to claim 1, wherein the key bodies of the button unit each have a pressing portion spaced apart from the connecting frame, and are spaced apart from one side of the pressing portion The pressing portion and the cantilever portion of the connecting frame are connected. The cantilever type keyboard device according to claim 1, wherein the actuating unit further comprises a plurality of elastic cushions respectively disposed above the elastic domes. The cantilever type keyboard device according to claim 1, further comprising a spacer frame interposed between the carrier and the connecting frame and having a shape corresponding to the shape of the connecting frame. The cantilever type keyboard device according to claim 4, wherein the spacer frame is an electrical insulator. The cantilever type keyboard device according to claim 1, wherein the carrier of the actuating unit is an electrical insulator.