JP3077360U - Mobile phone key chip - Google Patents

Abstract

(57) [Summary] [Problem] An arc-shaped notch and a foot are provided on all sides around the chip,
Provided is a mobile phone key chip which is fixedly attached to a thin-film key, transmits a signal using the resilience of a metal material, and can extend the service life of the thin-film key. A chip (23) is provided in a thin film key (2) in a mobile phone (1) case (11). The tip 23 is formed from a multi-metal element alloy, the center is raised in an arc shape, and there are arc-shaped cuts 232 in four sides. The arcuate cuts 232 serve as the feet 233 to fix the chip attached to the vinyl cover 21 in place, to reduce contact between the chip 23 and the printed electronic circuit board 13 in unnecessary parts, and to reduce the contact between the chip 23 and the printed electronic circuit board 13. Improve contact flight speed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention provides a mobile phone key chip, which is located inside a thin film key inside a mobile phone key, has an arc-shaped notch attached to a thin film cover, and transmits a signal in contact with a control key on a printed electronic circuit. .

[0002]

[Prior art]

 Many of the current mobile phone control keys are operated by carbon type or thin film type. The carbon type key is made of vinyl as the basic material and is integrally molded by the extraction method. The act of pressing the key is transmitted through the electronic circuit on the printed electronic circuit and emits a signal.

[0003]

[Problems to be solved by the invention]

 However, when a cell phone generates a high temperature due to the electric heat of the call or the daytime, the carbon type vinyl key softens and deteriorates, so it must return to normal temperature and wait for the vinyl material to harden and vaporize. The service life of carbon keys is short.

[0004]

[Means for Solving the Problems]

 The present invention is a thin-film key inside chip inside a mobile phone. The chip is made of a multi-metal alloy with an arc-shaped bulge in the center and arc-shaped cuts in all four sides. The arcuate cut serves as a foot, fixing the chip affixed to the vinyl cover in place, reducing contact between the chip and the printed electronic circuit board where it is not needed, and providing convenient contact between the chip and the printed electronic circuit board. Increase speed. The thin-film key induction system uses the resistance and the restoring force of the metal material of the chip body to extend the service life.

[0005]

[Embodiment]

 As shown in FIGS. 1 and 2, the chip 23 of the present invention is in the thin film key 2 inside the mobile phone 1. A plurality of control keys 12 are provided inside a case 11 of the mobile phone 1. At the center of each control key 12, there is a push bar 121, and the push bar 121 and the vinyl cover 21 of the thin film type key 2 correspond to the chip 23, and the bonding surface 211 of the vinyl cover 21 which is the surface to the printed electronic circuit board 13 The chip 23 is attached and fixed. A fixed position hole 22 is provided between each chip 23 to receive a fixed position hook 133 on the printed electronic circuit board 13 and to fix the thin film type key 2. The position and quantity of the chips 23 depend on the control keys 12 and the contacts 131, 132 of the printing electronics 13.

As shown in FIG. 3, the tip is formed by compressing a circular metal tip, and has a raised arc-shaped guiding part 231 at the center. An arc-shaped notch 232 is formed around the chip 23 in a four-way contrast, and each of the arc-shaped notches 232 forms a foot 233 and has a function of being a fixed position on the printed electronic circuit 13.

As shown in FIGS. 4 and 5, the guidance method using the thin film key 2 is based on the coercive force and the recovery force of the metal material of the chip 23. When the control key 12 is pressed, the push bar 121 pushes the vinyl cover 21 and the chip center, and the chip 23 center guiding portion 231 comes into contact with the conductive contacts 131 and 132 to transmit a signal.

The arc-shaped notch 232 is designed to avoid arranging the contact points 131, 132 on the printed electronic circuit 13, and to suppress the situation such as not being able to be pushed or poor guidance, and to press the chip 23. At this time, the foot 233 extends completely outward, and the guiding portion 231 contacts the contact points 131 and 132 to form a passage. Thereby, the tip 23 enhances the quick guiding effect.

The chip 23 of the present invention is formed of a multi-metal alloy, and the design of the arc-shaped notch 232 always increases the chip recovery effect and the rapid induction effect, and extends the service life of the thin-film key 2.

[0010]

[Effect of the invention]

 The arc-shaped cuts around the chip around the chip of the present invention act as feet and fix the chip stuck to the thin film cover, reducing the contact of the chip with the printed electronic circuit board where it is not needed, and Helps prompt transmission of contact. This results in a longer service life and a more accurate and better thin film key.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a mobile phone key chip according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a mobile phone key chip according to an embodiment of the present invention;

FIG. 3 is a plan view of the mobile phone key chip from below according to the embodiment of the present invention;

FIG. 4 is a side view of a mobile phone key chip according to an embodiment of the present invention;

FIG. 5 is a side view of a mobile phone key chip according to an embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone 11 Case 12 Control key 121 Push bar 13 Printed electronic circuit board 131 Lead contact 132 Lead contact 133 Fixed position hook 2 Thin film type key 21 Vinyl cover 211 Adhesive surface 22 Fixed position hole 23 Chip 231 Induction part 232 Arc cut 233 Feet

Claims (3)

[Utility model registration claims] 1. A chip disposed between a printed electronic circuit board disposed inside a mobile phone and a thin film key composed of a vinyl cover, wherein the structure is such that a multi-metal element alloy plate is compressed and a center is formed. An arc-shaped protruding guide portion is provided, and around the guide portion, the multi-metal element alloy plate is designed so as to avoid a contact electronic arrangement on a printed electronic circuit board toward a skirt portion of the guide portion. A mobile phone key chip formed as a foot to provide a cut in an arc shape formed and to function to keep a gap between each arc cut in a fixed position on a printed electronic circuit board. 2. The multi-metal element alloy as claimed in claim 1, wherein the guiding portion constituting the thin film key has a restoring force utilizing a coercive force and a restoring force of a metal material. Mobile phone key chip described in. 3. An arc-shaped notch provided in the chip according to the above-mentioned item, wherein at least three sides have an average notch and at least three feet are provided.
Mobile phone key chip described in.