Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
1999-03-22
2001-01-30
Young, Lee (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
36, 36, 36
Reexamination Certificate
active
06178619
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an assembling method for keyboard, more particularly, to an assembling method, which can be more easily assembled to reduce manufacture time and cost, the constitutional component thereof are of flexible material to provide rolling function.
BACKGROUND OF THE INVENTION
As shown in
FIG. 4
, the conventional keyboard
10
comprises a rigid base
1
a
, a circuit board
2
a
on the base la and with one end thereof being electrically connected to a conductive wire, a plate
3
a
over the circuit board
2
a
, a plurality of resilient bodies
31
a
integrally formed on the plate
3
a
and corresponding to the contacts
21
a
on the circuit board
2
a
, a rigid cover
4
a
corresponding to the resilient body
31
a
and having a plurality of openings
41
a
. The keytop
5
a
is placed within the opening
41
a
and the resilient body
31
a
is placed within the keytop
5
a
. When the user press the keytop
5
a
, the resilient body
31
a
is deformed to touch the contact
21
a
on the circuit board
2
a
. The contact
21
a
is conducted such that the electric signal is transmitted to the computer through the conductive wire.
However, the conventional keyboard
10
a
is generally assembly by locking, in other word, by assembling the base la with the rigid cover
4
a
, the assembling task is complicated. The assembling of the keytop
5
a
is especially troublesome. Therefore, the assembling of the keyboard
10
a
is both labor and time consuming. Moreover, the conventional keyboard
10
a
has aperture on top of the cover
4
a
for placement of the keytop
5
a
. The circuit within the keyboard
10
a
has short-circuit problem when water is leaked from the aperture. Furthermore, the base
1
a
, cover
4
a
, and keytop
5
a
of the keyboard
10
a
are all made of rigid material, this makes the keyboard
10
a
impossible to roll. Therefore, the keyboard
10
a
is hard to portable due to its specific volume. It is an object of the present invention to a keyboard assembling method wherein all components of the keyboard are flexible materials. First, a flexible circuit membrane with circuit and a plurality of contacts are arranged on a flexible substrate. Secondly, a flexible plate is arranged on the flexible circuit membrane, a plurality of resilient bodies integrally formed with the flexible plate are arranged and corresponding to the contacts on the flexible circuit membrane. Thirdly, a flexible cover having a plurality of integrally-formed and concave keytops is arranged on the flexible plate such that each resilient body can be placed within corresponding keytop. Finally, the peripheral of all components are tightly joined, thus completes the keyboard assembling task. The keytops are integrally formed with the flexible cover and those components are joined by radio heating, thus saves assembling time and labor. Moreover, the design of the inventive is more ergonomic.
It is another object of the present invention to provide a keyboard assembling method wherein the peripherals of all components thereof are joined by radio heating such that no aperture is formed between the base and the cover. The keyboard has closed appearance and is waterproof It is still another object of the present invention to provide a keyboard assembling method wherein all components thereof are flexible such that the keyboard can be conveniently rolled. The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 5220521 (1993-06-01), Kikinis
patent: 5459461 (1995-10-01), Crowley et al.
patent: 5742241 (1998-04-01), Crowley et al.
patent: 5969644 (1999-10-01), Koutaka
patent: 6028591 (2000-02-01), Lueders
Rosenberg , Klein & Lee
Smith Sean
Young Lee
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