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Mobile Phone Patent Abstract
The present invention relates to an improved structure of a bracket
component for the press button of a mobile phone, more particularly
to another improved design implemented in the interior of a printed
circuit board having control button on it for a bracket component
by using thin membrane touch switch within a mobile phone. The bracket
component according to the present invention is a curved metallic
guiding bracket wherein the corresponding surrounding.has an inward
cut curve, and such cut curve design has a four supporting legs
deposed around the aligned design on the printed circuit board allowing
a better positioning function. Furthermore, the present invention
with the cut curve design has a characteristic to resume the press
keys more effectively, and in turn elongate the life of the bracket.
Mobile Phone Patent Claims
What is claimed is:
1. An improved structure of a bracket component of a press key
of a mobile phone, which is implemented inside a mobile phone as
a thin membrane bracket component, comprising a plastic membrane
and a metal alloy bracket component, wherein the plastic membrane
has glue attached on it for attaching the bracket component in a
fixed position, and said bracket component characterized in: a bracket
composed of a plurality of metal element alloys, and is press as
a whole piece, wherein there is a prominent curve at the central
position of the bracket forming a conductive portion for the conduction;
a cut curve design cut inward and deposed around the corresponding
positions of the bracket, and every two cut curves form a supporting
leg for positioning function; the cut curve design keeps the bracket
away from the electrical contact points aligned on the circuitry
of a printed circuit board; and when the keys are pressed, the supporting
legs extends outward and allows the conductive portion attaches
the conductive points to form a current passage.
2. An improved structure of a bracket component of a press key
of a mobile phone as set forth in claim 1; wherein the conductive
contact of the thin membrane press key is by the elasticity of the
bracket made of pressure resisting and stress restoring materials.
3. An improved structure of a bracket component of a press key
of a mobile phone as set forth in claim 1, wherein the cut curve
of the bracket has at least three even cut curves forming at least
three supporting legs for the implementation.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improved structure of a bracket
component for the press button of a mobile phone, wherein there
are corresponding cut curves around the periphery of the bracket,
and such cut curve design reduces the contact between the bracket
and the printed circuit board and forms four circular points around
the periphery for pressed positioning. Such arrangement of the cut
curve design can reinforce the restoring elasticity of the bracket
in order to elongate the life of the bracket.
2. Description of the Prior Art
The conventional press keys of the mobile phone generally are divided
into two types, namely carbon type and thin membrane type, wherein
the carbon type uses plastics as the basic material to form a whole-piece
injected formation, and such press keys has a restoring characteristic
and a resistance to the pressing when the keys are pressed, and
there is a conductive carbon deposed at the bottom. When the keys
are pressed, it conducts the circuit on the printed circuit board
and sends out signals.
However, the mobile phone will generate heat with high-temperature
due to the electro-thermal energy generated from the telephone conversation
or by the direct sunlight. At that time, the carbon-style plastic
press key will be softened and change its composition of matter.
As soon as it resumes from the normal temperature, the plastic material
will be hardened or oxidized, and hence the life of carbon-style
press keys is experiencing a tough test.
In view of the above description, the inventor of the present invention
based on years of experience in the related industry conducted extensive
research to enhance the press key technology and that is the thin
membrane style press keys which comprise a plastic membrane and
a bracket component, and at the bottom of the thin plastic membrane,
there attaches glue for sticking the press keys. Such bracket component
itself is a curved metallic bracket, it conduct the circuit on the
printed circuit by pressing the keys. Since the thin membrane press
keys uses the metallic characteristics of the bracket, therefore
the bracket has pressure resistance and restoring stress is the
valuable consideration taken into account for the design of the
present invention.
Therefore, after performing many tests and experiments, the invention
hopes that (and also it the primary objective of the present invention)
it could provide a bracket component with excellent restoring stress
and better conductive and quick contact. When implemented in the
thin membrane style press keys of a mobile phone, it can drastically
enhance the life of its application.
The characteristics of the improved bracket component structure
according to the present invention are: having corresponding cut
curves around the corresponding positions on the bracket, and such
cut curve design can reinforce the overall restoring stress of the
bracket. Furthermore, the bracket forms a four circular point positioning
by press to reduce the contact between the bracket and the printed
circuit board, which can enhance the sensitivity between the bracket
and the printed circuit board and then produce a thin membrane press
keys of longer application life and higher precision.
To make it easier for our examiner to understand the objective
of the invention, its performance and advantages, we use a preferred
embodiment in together with the attached drawings for the detailed
description of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, features, and advantages of the invention will become
apparent from the following detailed description of the preferred
but non-limiting embodiment. The description is made with reference
to the accompanying drawings, in which:
FIG. 1 shows the diagram of the disassembled parts of the present
invention.
FIG. 2 shows the illustration of how to use the present invention.
FIG. 3 shows the down-view plane of the present invention.
FIG. 4 shows the side-view plane of the present invention.
FIG. 5 shows the illustration of the movement according to the
present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Firstly, please refer to FIGS. 1 and 2. The figures respectively
show the disassembled parts of the implementation, and the illustration
on the application of the present invention. A bracket component
23 according to the present invention is implemented to a thin membrane
press key 2 inside a mobile phone 1. A plurality of control buttons
12 are deposed inside a housing 11 of the mobile phone 1, and there
is a press rod 121 deposed at the central position of each of the
control buttons 12, and the press rod 121 presses against a thin
plastic membrane 21 of a press key 2 and corresponds to a bracket
component 23. The bracket component 23 attached to the attaching
surface 211 (in corresponsive with the corresponding surface of
the printed circuit board 13) of the plastic membrane 21 is fixed
by the glue attached on the attaching surface 211. Every bracket
component 23 has a positioning hole deposed in between bracket components
for securing the positioning the thin membrane press keys 2 to the
positioning block 133 on the printed circuit board 13. The number
of positions and quantities are corresponding to each control key
12 and the contact points 131, 132 of the printed circuit board
13. Due
Due to the movement of the bracket component 23 and after pressing
the control key 12, the press rod 121 will press against the plastic
membrane 21 and the center of the bracket component. It will complete
the signal transmission as the conductive portion 231 at the center
of the bracket component 23 contacts with the conductive points
131, 132.
Further, please refer to FIGS. 3, 4, and 5. In the figures, the
bracket component 23 depicted in the figures is a metallic circular
plate formed by pressing as a whole-piece formation, and there is
a curved conductive portion 231 at the central position, and there
is a cut curve 232 design in the corresponding positions around
the bracket component 23. Every two curves form a supporting leg
233 for positioning the printed circuit board 13. The cut curve
design allows it to keep away from the conductive points 131, 132
of the aligned circuitry on the printed circuit board 13 in order
to reduce the improper pressing that causes the defective conduction
or short circuit. When the key is pressed, the supporting leg 233
will fully extend outward to the sides and allow the conductive
portion 231 being effectively attached to the conductive points
and form a conduction passage. Such arrangement can enhance the
sensitivity of the conduction for the bracket component 23.
Since the method used for the conduction with the thin membrane
press keys 2 is by the pressure resisting and stress restoring characteristics
of the metallic material of the bracket component 23, therefore
the bracket component 23 of the present invention is composed of
many metallic element alloys. The cut curve 232 designs around the
printed circuit board is able to enhance the restoring resistance
and sensitivity of the bracket component 23, and in turn elongate
the application life of the bracket component.
In summation of the above description, the present invention herein
enhances the conventional structure and further complies with the
patent application requirements and is submitted to the Patent and
Trademark Office for review and granting of the commensurate patent
rights.
While the invention has been described by way of example and in
terms of a preferred embodiment, it is to be understood that the
invention is not limited thereto. To the contrary, it is intended
to cover various modifications and similar arrangements and procedures,
and the scope of the appended claims therefore should be accorded
the broadest interpretation so as to encompass all such modifications
and similar arrangements and procedures. |