TW201409510A - Button and electronic device having the same and method for manufacturing a button - Google Patents

Abstract

A button is disclosed. The button is mounted on an electronic device and includes a button surface, a button main body and a preventing light leak film. The button surface has at least one container housing tank. The button main body is connected to the button surface and includes a main body, at least one button pillar and a waterproofing rib, wherein the at least one button pillar is formed on a upper surface of the main body and located on the at least one container housing tank. The waterproofing rib is formed on a lower surface of the main body. The preventing light leak film is connected to the button main body and has a shading part used for shading light generated by a light-emitting element in the electronic device.

Description

Key device, electronic device with button device, and manufacturing method of button device

The invention relates to a button device, in particular to a light leakage preventing button device.

Most of the current plastic and rubber (P+R) waterproof buttons are made of UV-cured Adhesive (also known as UV glue) to bond plastic parts and rubber parts. In the process, the staff will use the fixture to apply the glue between the plastic parts and the rubber parts, and then use the ultraviolet light to illuminate the glue to make the plastic parts and the rubber parts adhere after hardening. Therefore, in order to allow the glue to be irradiated with ultraviolet light, the rubber parts of the existing P+R waterproof button are mostly transparent.

As shown in Fig. 1, it shows a conventional P+R waterproof button device. Generally, the waterproof button 1a is made to interfere with the groove of the electronic device 90a by the waterproof rib 23a on the button body layer 20a (i.e., the aforementioned rubber member) to achieve waterproofing. However, as described above, since the key body layer 20a is transparent, the light-emitting diodes provided on the circuit board 92a inside the electronic device 90a are not shown for the electronic device 90a that emits light when the button is pressed (not shown). The light emitted by the transparent ribs 23a is scattered by the peripheral edges of the buttons, causing leakage of the keys and poor astigmatism.

Therefore, in order to improve the occurrence of the above, the prior art utilizes a partial black lacquer around the key body layer 20a to shield the black paint. However, the amount of black lacquer is difficult to control accurately and the yield is not high. Therefore, it is necessary to propose a new alternative to improve the lack of prior art.

The main object of the present invention is to provide a button device that can prevent light leakage.

Another object of the present invention is to provide an electronic device having a button device for preventing light leakage.

Still another object of the present invention is to provide a method of manufacturing a key device.

In order to achieve the above object, the button device of the present invention is provided in an electronic device, the electronic device includes a front cover and a circuit board, the front cover includes a groove, and the circuit board includes a light-emitting component, and the circuit board is located at the front of the button device Between the covers. The button device of the present invention comprises a button surface layer, a button body layer and a light leakage preventing film. The button surface layer has at least one receiving groove. The button body layer is connected to the button surface layer, and the button body layer comprises a body having an upper surface and a lower surface, at least one button column and a waterproof rib; at least one button column is formed on the upper surface, and at least one button column is disposed on at least one The rib is formed in the groove; the waterproof rib is formed on the lower surface, and the waterproof rib is used to be stuck in the groove. The anti-light leakage film is connected to the button body layer, and the anti-light leakage film has a light shielding portion for blocking a light generated by the light-emitting element to prevent light from being scattered through the waterproof rib.

The electronic device of the present invention includes a front cover, a circuit board, and the aforementioned button device. The front cover includes a recess, the circuit board includes a light emitting component, and the circuit board is located between the front cover and the button device.

The method for manufacturing the button device of the present invention comprises the steps of: forming a light shielding portion on a light leakage preventing film; and connecting the light leakage preventing film to a button body layer, wherein the button body layer comprises a body, at least one button column and an anti-lightproof layer The water rib; the button body layer is connected to a button surface layer having at least one accommodating groove, and at least one button column is accommodated in at least one accommodating groove.

The above and other objects, features and advantages of the present invention will become more <

Hereinafter, please refer to FIGS. 2 to 4 for a schematic structural view of the key device and the electronic device of the present invention.

As shown in FIG. 2, in an embodiment of the present invention, the electronic device 90 of the present invention includes a housing 91, a circuit board 92, a button device 1, a plastic cover 93, and a button cover 94. The outer casing 91 includes a front cover 911 and a rear cover 912. The front cover 911 is provided with a button receiving groove 9112 and a recess 9114 (shown in FIG. 4). The circuit board 92 is disposed in the button receiving slot 9112 and is located between the button device 1 and the front cover 911. The circuit board 92 is provided with a light-emitting component (not shown), and the light-emitting component is used when the button device 1 is pressed. In the embodiment of the present invention, the light-emitting element is a light-emitting diode (LED), but the invention is not limited thereto. The plastic cover 93 covers the top of the button device 1 for fixing the button device 1 and the circuit board 92. The button trim 94 covers the plastic cover 93 for use as a decoration. In the specific embodiment of the present invention, the electronic device 90 of the present invention is a handheld mobile phone, but the invention is not limited thereto, and the electronic device 90 can also be a notebook computer or other electronic products with buttons.

As shown in FIG. 3 and FIG. 4, in an embodiment of the present invention, the button device 1 includes a button surface layer 10, a button body layer 20, and a light leakage preventing film 30.

In an embodiment of the present invention, the button surface layer 10 has a plurality of accommodating grooves 11, and the button surface layer 10 is made of a plastic material (that is, a commonly known P key).

In one embodiment of the present invention, the button body layer 20 is connected to the button surface layer 10, and the button body layer 20 is made of a rubber material (that is, a commonly known R key). The button body layer 20 includes a body 21 having upper and lower surfaces 211, 213, a plurality of button posts 22, and waterproof ribs 23. The plurality of button posts 22 are formed on the upper surface 211 of the body 21, and each of the button posts 22 is correspondingly received in each of the accommodating slots 11. The waterproof ribs 23 are formed on the lower surface 213 of the body 21, and the waterproof ribs 23 are used to be inserted into the recesses 9114 of the front cover 911, so as to prevent interference between the waterproof ribs 23 and the recesses 9114 to prevent external moisture from penetrating into the electronic device. 90.

In one embodiment of the present invention, the light leakage preventing film 30 is connected to the lower surface 213 of the body 21 of the button body layer 20. The light leakage preventing film 30 has a light shielding portion 31 for blocking light, and the light shielding portion 31 is attached to the light leakage preventing film 30. When connected to the lower surface 213 of the body 21, the waterproof rib 23 is covered to prevent light generated by the light-emitting element from being scattered through the waterproof rib 23. In a specific embodiment of the present invention, the light leakage preventing film 30 of the present invention is a thermoplastic polyurethane film (TPU film), and the light shielding portion 31 is adhered to the thermoplastic polyurethane by printing. The black ink having opacity on the film is formed, but the light leakage preventing film 30 and the light shielding portion 31 of the present invention are not limited thereto.

Finally, please continue to refer to FIG. 3 and FIG. 4, and refer to FIG. 5 together. 5 is a flow chart showing the steps of the manufacturing method of the key device of the present invention.

Step S1 is performed to form a light shielding portion on a light leakage preventing film.

First, a thermoplastic polyurethane film is used as the defense of the present invention. The light leakage film 30 is applied to the light leakage preventing film 30 through a partial printing technique, and an opaque black ink is attached to the outer periphery of the light leakage preventing film 30 (as shown in FIG. 3) to prevent the light leakage film 30 from being surrounded. The light shielding portion 31 is formed at the edge position.

Then, step S2 is performed: the light leakage preventing film is connected to the lower surface of the body of the button body layer, and the light shielding portion covers the waterproof rib of the button body layer.

In the specific embodiment of the present invention, after the step S1 is completed, the anti-light leakage film 30 prepared in the step S1 is placed in a liquid rubber mold, and the anti-light leakage film 30 is connected to the post-emission molding by injection molding. The lower surface 213 of the body 21 of the button body layer 20, wherein the button body layer 20 formed by injection of the rubber comprises a body 21, a button post 22 located on the upper surface 211 of the body 21, and a lower surface 213 of the body 21. The waterproof rib 23 (shown in FIG. 4) and the light-shielding portion 31 are simultaneously covered with the waterproof rib 23 when the light-proof preventing film 30 is attached to the lower surface 213 of the body 21. It should be noted that the method of connecting the light leakage preventing film 30 to the key body layer 20 is not limited to the manner of injection molding.

Step S3 is performed to connect the button body layer to the button surface layer having the accommodating groove, and the button column is placed in the accommodating groove.

Finally, the button body layer 20 is connected to the previously formed key surface layer 10 by using the ultraviolet curing adhesive material, and the button column 22 of the button body layer 20 is received in the receiving groove 11 of the button surface layer 10 (see FIG. 4). Shown).

It should be noted that the manufacturing method of the key device of the present invention is not limited to the above-described order of steps, and the order of the above steps may be changed as long as the object of the present invention can be achieved.

Since the waterproof rib 23 of the button device 1 of the present invention is covered by the light-shielding portion 31 that is opaque, the light generated by the light-emitting element is blocked by the light-shielding portion 31 and is not scattered by the waterproof rib 23, Moreover, the process technology of local printing of thermoplastic polyurethane film is quite mature, so it is relatively easy to control the light-shielding quality compared with the method of using paint.

To sum up, the present invention, regardless of its purpose, means and efficacy, shows its distinctive features of the prior art. You are requested to review the examination and express the patent as soon as possible. It should be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the invention is intended to be limited by the scope of the claims.

1,1a‧‧‧ button device

10‧‧‧ button surface

11‧‧‧ accommodating slots

20, 20a‧‧‧ button body layer

21‧‧‧ body

211‧‧‧ upper surface

213‧‧‧ lower surface

22‧‧‧Key column

23,23a‧‧‧Waterproof ribs

30‧‧‧Anti-light leakage film

31‧‧‧Lighting Department

90,90a‧‧‧Electronic devices

91‧‧‧Shell

911‧‧‧ front cover

9112‧‧‧Key accommodating slot

9114‧‧‧ Groove

912‧‧‧ Back cover

92, 92a‧‧‧ circuit board

93‧‧‧Plastic cover

94‧‧‧Key clips

Figure 1 is a prior art button device.

2 is an exploded perspective view of the electronic device of the present invention.

Figure 3 is an exploded perspective view of the key device of the present invention.

4 is a side cross-sectional view showing the key device of the present invention disposed on a front cover of the electronic device.

Fig. 5 is a flow chart showing the steps of a method of manufacturing a key device of the present invention.

1‧‧‧Key device

10‧‧‧ button surface

11‧‧‧ accommodating slots

20‧‧‧Key body layer

21‧‧‧ body

211‧‧‧ upper surface

213‧‧‧ lower surface

22‧‧‧Key column

23‧‧‧Waterproof ribs

30‧‧‧Anti-light leakage film

31‧‧‧Lighting Department

90‧‧‧Electronic devices

911‧‧‧ front cover

9114‧‧‧ Groove

92‧‧‧ boards

93‧‧‧Plastic cover

94‧‧‧Key clips

Claims (9)

A button device is disposed on an electronic device, the electronic device includes a front cover and a circuit board, wherein the front cover includes a recess, the circuit board includes a light emitting component, and the circuit board is located at the button device and the front cover The button device comprises: a button surface layer having at least one receiving groove; a button body layer connected to the button surface layer, the button body layer comprising: a body having an upper surface and a lower surface; at least one a button post is formed on the upper surface, the at least one button post is received in the at least one receiving groove; and a waterproof rib is formed on the lower surface, the waterproof rib is configured to be engaged in the groove And a light leakage preventing film is connected to the button body layer, the light leakage preventing film has a light shielding portion for shielding a light generated by the light emitting element of the circuit board to prevent the light from passing through the waterproof The ribs are scattered out. The button device of claim 1, wherein the light leakage preventing film is coupled to the lower surface of the body, and the light shielding portion covers the waterproof rib. The button device of claim 2, wherein the light leakage preventing film is a thermoplastic polyurethane film, and the light shielding portion is impervious to being attached to the thermoplastic polyurethane film. Light ink is formed. An electronic device comprising: a front cover includes a recess; a circuit board including a light emitting element; and a button device, wherein the circuit board is located between the front cover and the button device, the button device comprising: a button surface layer having at least one a button body layer is connected to the button surface layer, the button body layer includes: a body having an upper surface and a lower surface; at least one button column formed on the upper surface, the at least one button column And a waterproof rib is formed on the lower surface, the waterproof rib is configured to be engaged in the groove; and a light leakage preventing film is connected to the button body layer, The light leakage preventing film has a light shielding portion for blocking light generated by the light emitting element of the circuit board to prevent the light from being scattered through the waterproof rib. The electronic device of claim 4, wherein the light leakage preventing film is attached to the lower surface of the body, and the light shielding portion covers the waterproof rib. The electronic device of claim 5, wherein the light leakage preventing film is a thermoplastic polyurethane film, and the light shielding portion is impervious to being attached to the thermoplastic polyurethane film. Light ink is formed. A method of manufacturing a button device includes the following steps: Forming a light shielding portion on the light leakage preventing film; connecting the light leakage preventing film to a button body layer, wherein the button body layer comprises a body, at least one button column and a waterproof rib; and connecting the button body layer to the The button surface layer has at least one receiving slot, and the at least one button column is received in the at least one receiving slot. The method for manufacturing a button device according to claim 7, wherein the step of connecting the light leakage preventing film to the button body layer is performed by connecting the light leakage preventing film to a lower surface of the body, and the light shielding is performed. The portion is covered with the waterproof rib. The method for manufacturing a button device according to claim 8, comprising the steps of: forming a light leakage preventing film by using a thermoplastic polyurethane film; and by using the thermoplastic polyurethane film An opaque ink is attached to form the light shielding portion.