WO2016060316A1

WO2016060316A1 - Metal light-emitting button key and manufacturing method of metal light-emitting button key

Info

Publication number: WO2016060316A1
Application number: PCT/KR2014/010266
Authority: WO
Inventors: 김무용
Original assignee: 김무용
Priority date: 2014-10-15
Filing date: 2014-10-29
Publication date: 2016-04-21

Abstract

The present invention relates to a metal light-emitting button key and a manufacturing method of a metal light-emitting button key and, more particularly, to a metal light-emitting button key in which light is transmitted to the outside of a button key in conformity with the shape of a character or a symbol, and a manufacturing method of a metal light-emitting button key. The manufacturing method of a metal light-emitting button key according to the present invention comprises: a shaping step of forming a button body by processing a metal plate; a first penetration part forming step of forming a first transmission part, made of a light transmitting material, on a rear surface of the button body; a light transmission groove processing step of forming a light transmission groove to transmit light forward in conformity with the shape of a character or a symbol of the button body, wherein the button body is separated into an inner part and an outer part by the light transmission groove; and a second transmission part forming step of forming a second transmission part, made of a light transmitting material, on the rear surface of the button body, on which the first transmission part is formed, and the light transmission groove, wherein the inner part and the outer part, which are separated from each other in the light transmission groove processing step, are supported by the first transmission part.

Description

Manufacturing method of metal light emitting button key and metal light emitting button key

The present invention relates to a metal light emitting button key and a metal light emitting button key manufacturing method, which relates to a metal light emitting button key and a metal light emitting button key manufacturing method through which the light is transmitted along the shape of the letter or code to the outside of the button key.

Button keys are generally used in electronic devices installed in portable terminals or other electronic products or vehicles. Such button keys may be classified into a film insert type and a mold type according to a manufacturing method.

The film insert type button key is formed by printing the letter portion and the backlighting portion on a thin film of plastic, then forming the film into a button shape, inserting the film into an injection mold, and integrally manufacturing the transparent plastic.

The mold-type button key is made by injection molding a transparent plastic button, painting the button and making the letter marking part transparent by laser marking, and UV coating the surface of the button.

However, the film insert type button key may have a shape in which the film part is peeled off during long time use, and a phenomenon in which the film and the plastic injection part are separated during the thermal shock test occurs. In particular, the texture of the button key is not luxurious.

In addition, since the button type of the mold type has low wear resistance and cannot express the texture of the metal, there is a limitation in expressing the texture and there is a problem in that the post-processing technology applicable to the metal cannot be applied.

In order to solve this problem, Korean Patent Publication No. 10-2005-0047275 discloses a button key made of metal.

1 is a perspective view showing a manufacturing process of a conventional button key. First, as shown in FIG. 1 (a), a metal sheet S having a predetermined thickness is prepared, and as shown in FIG. 1 (b), the metal sheet S is formed by pressing or die casting. The case 10 is molded. At this time, the space 13 is formed inside the case 10. As shown in FIG. 1C, the surface of the case 10 is cut to form a display hole 11 having a number or a letter shape. After inserting the case 10 into the mold, the liquid transparent thermoplastic resin is introduced into the space 13 of the case 10, and the space 13 and the display hole 11 are shown in FIG. ) To form a filling part 20 made of a transparent plastic.

In the conventional button key as described above, the case 10 is separated into the inner part and the outer part by the display hole 11 when the display hole 11 is formed to have a “0” or similar shape. In order to prevent the inner part from being separated and the shape of the letter is not displayed properly, the support part 14 connecting the inner part and the outer part separated from each other was formed.

However, by forming the supporting portion 14 in the display hole 11 to connect the inner portion and the outer portion, the supporting portion 14 is exposed to the outside of the button key to impair the aesthetics of the button key, and the display hole 11 is closed. There is a problem that a part of the character is not displayed because the light transmitted to the outside through the support 14 is hidden.

The present invention is to solve the above-mentioned problems, the metal light emitting button key and the metal that can completely express the shape of the character or code without the light is partially obstructed or disconnected to the outside of the button key along the shape of the character or code It is an object of the present invention to provide a method for manufacturing a light emitting button key.

Metal light emitting button key manufacturing method of the present invention to achieve the above object, the shape processing step of forming a button body by processing a metal plate; A first transmission part forming step of forming a first transmission part of a light transmissive material on a rear surface of the button body; A light-transmitting groove processing step of forming a light-transmitting groove in the button body so that light is transmitted forward along the shape of a letter or a sign, and the button body is separated into an inner portion and an outer portion by the light-transmitting groove; And a second transmission part forming step of forming a second transmission part made of a light transmissive material on the back surface of the button body and the light transmission groove in which the first transmission part is formed, and separated from each other in the light processing groove processing step. The inner side and the outer side are supported by the first transmission portion.

In the forming of the first permeable part, the first permeable part is integrally formed with the button main body by insert injection after applying a thermal adhesive agent to the rear surface of the button body, and the inner part is attached and fixed to the first permeable part.

In addition, in the forming of the first permeable part, the first permeable part may be attached to the button body by an adhesive attachment method or a heat fusion method, and the inner part may be attached and fixed to the first permeable part.

The first transmission part is formed with a through hole passing through the first transmission part in the front-rear direction and communicating with the light transmitting groove.

When the light transmitting groove is formed to have a smaller cross-sectional area toward the rear, and the second light transmitting portion is filled in the light transmitting groove, the second light transmitting portion formed in the light transmitting groove is formed in an undercut structure, thereby leaving the inner portion forward. To prevent.

The first transmission part may include a first back part formed on a rear surface of the button body, and a first coupling part protruding from the first back part to form a locking groove, and the second transmission part may be filled in the locking groove. It includes a locking portion formed.

The light transmitting groove includes a first light transmitting groove and a second light transmitting groove, wherein the first light transmitting groove is formed with the second transmission portion, and a rear surface of the button body is formed before the second light transmission portion forming step. A colored pad made of a light transmissive material is disposed at a position where the groove is formed, and the light passing through the first and second light emitting grooves shines in at least two different colors.

In addition, the method of manufacturing a metal light emitting button key of the present invention, the light-transmitting grooves are formed in the metal plate according to the shape of the letters or symbols, forming a rib connecting the inner and outer portions of the metal plate separated from each other by the light-transmitting grooves. Groove processing step; A rib pressing step of pressing the rib to protrude to the rear of the metal plate; A shape processing step of forming a button body by processing the metal plate; A first transmission part forming step of forming a first transmission part of a light transmissive material on a rear surface of the button body; A rib removing step of removing the rib together with a portion of the first permeable portion covering the rib; And a second transmission part forming step of forming a second transmission part of a light transmissive material on a rear surface of the button body in which the first transmission part is formed.

On the other hand, the metal light-emitting button key of the present invention, a light transmitting groove is formed along the shape of the letter or code, the metal button body is separated into the inner and outer portions by the light transmitting groove; A first transmissive part formed on a rear surface of the button body and having an inner side portion and an outer side portion respectively attached thereto; And a second transmission part made of a light transmissive material formed on a rear surface of the button main body in which the first transmission part is formed, wherein the first transmission part comprises: a first rear part formed on a rear surface of the button body; A second coupling part which protrudes from the first rear part to form a locking groove, wherein the second transmission part includes a locking part which is formed by being filled in the locking groove and covers the first coupling part; It is formed to protrude rearward from the rear portion is formed of a second coupling portion which protrudes to the rear of the button body and is coupled to the electronic device.

The first transmission part is formed with a through hole penetrating the first transmission part in the front-rear direction and communicating with the light transmission groove, and the second transmission part is filled in the light transmission groove through the through hole.

The metal light emitting button key manufactured according to the present invention has the following effects.

By forming the first transmission portion on the back of the button body, it is possible to completely express the shape of the character or code without blocking or disconnecting part of the light transmitted to the outside of the button body along the shape of the character or code, and the visibility of the button key It can increase the luxury and aesthetics.

In addition, when the light emitting groove is formed in the button body, the cross-sectional area of the light transmitting groove is gradually reduced toward the rear side, whereby the inner portion can be fixed so as not to be separated by the second transmission portion formed in the light transmitting groove.

In addition, the locking groove is formed in the first transmission portion, and the locking portion formed by filling the locking groove is formed in the second transmission portion, thereby increasing the coupling force of the first transmission portion and the second transmission portion.

In addition, by adding a colored pad to the back of the button body, it is possible to emit light of various colors in one metal light emitting button key.

1 is a perspective view showing a conventional button key manufacturing process.

2 is a perspective view showing a metal light emitting button key according to an embodiment of the present invention.

3 is a flow chart of a method of manufacturing a metal light emitting button key according to a first embodiment of the present invention.

4 is a view showing a shape processing step according to the first embodiment of the present invention.

5 is a view showing a first transmitting part forming step according to a first embodiment of the present invention.

6 is a view showing a step of forming a light emitting groove according to the first embodiment of the present invention.

7 is a view showing a second transmission portion forming step according to the first embodiment of the present invention.

8 is a view showing a metal light emitting button key manufacturing method according to a second embodiment of the present invention.

9 is a view showing a metal light emitting button key manufacturing method according to a third embodiment of the present invention.

10 is a view showing a metal light emitting button key manufacturing method according to a fourth embodiment of the present invention.

11 is a view showing a light processing groove processing step according to a fourth embodiment of the present invention.

12 is a view showing a rib pressing step according to a fourth embodiment of the present invention;

13 is a view showing a shape processing step according to the fourth embodiment of the present invention.

14 is a view showing a first transmitting portion forming step according to a fourth embodiment of the present invention.

15 illustrates a rib removing step according to a fourth embodiment of the present invention.

16 is a view illustrating a second transmitting part forming step according to a fourth exemplary embodiment of the present invention.

2 is an engine start / stop button of a vehicle manufactured according to an exemplary embodiment of the present invention, in which light transmits English characters engraved on the surface of the button key to increase visibility of the button key and improve aesthetics and luxury. Can be. In manufacturing the button key of the present invention, among the letters engraved on the button key, letters such as "R", "O", and "P" process the surface of the button key to form a groove having the same shape as the button key. Is separated into an inner side and an outer side. However, the present invention can express the character of the complete shape by fixing the inner portion of the letter shape is separated and separated or out of position. This feature can be equally applied to other letters, symbols, and the like, which are not shown in FIG. 2.

It will be described below in detail according to each embodiment of the present invention. The metal light-emitting button key according to the embodiment of the present invention has been described by dividing the front and rear, the front and the front is a direction in which the light-transmitting groove of the letter or code shape is exposed, the rear and the back is formed concave so that the second transmission portion The direction in which it is formed. According to the drawings, the directions toward the front and the rear may vary.

First embodiment

Figure 4 (a) is a cross-sectional view showing a cross section of the button body in order to explain the shape processing step according to the first embodiment of the present invention, Figure 4 (b) is a front perspective view of the button body formed according to the shape processing step, 5 (a) is a cross-sectional view showing a cross section of the button body and the first transmission portion in order to explain the first transmission portion forming step according to the first embodiment of the present invention, Figure 5 (b) according to the first transmission portion forming step 6 is a rear view of the button main body in which the first transmission part is formed, and FIG. 6 (a) is a cross-sectional view showing a cross section of the button main body and the first transmission part in order to explain the step of forming the light transmitting groove according to the first embodiment of the present invention; FIG. 6 (b) is a front perspective view of the button main body in which the light transmitting groove is formed according to the light transmitting groove forming step, and FIG. 7 (a) is a metal for explaining the second transmitting part forming step according to the first embodiment of the present invention. A cross-sectional view showing a cross section of the light emitting button key. 7 (b) is a front perspective view of the metal light emitting button key.

The method of manufacturing a metal light emitting button key according to the first exemplary embodiment of the present invention includes a shape processing step, a first transmitting part forming step, a light transmitting groove processing step, and a second transmitting part forming step, as shown in FIGS.

In the shape machining step, as shown in FIG. 4, the metal plate is pressed to form a button body 110. In this case, the metal plate may be aluminum (Al) or SUS. In addition, the metal plate may be surface treated in order to express the appearance luxuriously, and the surface treatment may be performed by various methods such as plating and oxidation.

As shown in FIG. 5A, the first transmitting part forming step includes forming a first transmitting part 200 of a light transmissive material (transparent material or other material through which light can pass) on the back of the button body 110. Form. First, a thermosetting adhesive is applied to the back surface of the button body 110 and heated to form an adhesive layer (not shown), and the first transmission part 200 is integrally formed with the button body 110 by an insert injection method. . The adhesive layer increases the adhesion between the button body 110 and the first transmission part 200 when the first transmission part 200 is formed on the back surface of the button body 110. In addition, the first transmission part 200 may be directly attached to the back surface of the button body 110 by an adhesive attaching method or a thermal fusion method.

In detail, the first transmission part 200 includes a first rear part 210 and a first coupling part 220. The first back portion 210 is formed on the back of the button body 110, as shown in Figure 5 (b) is formed in a rectangular parallelepiped shape. In FIG. 5B, the portion A is a portion where the light emitting groove 111 is to be formed in the light processing groove processing step. Accordingly, the first rear part 210 supports the inner part 110a and the outer part 110b which are separated from each other through the light processing groove processing step so that the shape of the light transmitting groove is maintained. For more details, see Floodlight Grooving Step. The first coupling part 220 protrudes from the first rear part 210 to form a locking groove 221. The first coupling portion 220 is to increase the coupling force with the second transmission portion 300a by forming the engaging groove 221, protrudes outward from the outer side of the first back portion 210 is bent to the rear, and back to the inside It is bent to form a locking groove 221 opened in the inner center direction. It is preferable to form two or more such first coupling parts 220 as shown in FIG. The engaging groove 221 formed as described above is filled with the second transmission part 300a to form a coupling force between the first transmission part 200 and the second transmission part 300a. If the bonding force between the first transmission part 200 and the second transmission part 300a formed by the insert injection method is sufficient in manufacturing the metal light emitting button key of the present invention, the first transmission part 200 is the first coupling part. It may be made of only the first back portion 210 without forming the 220. (See the second embodiment.)

As shown in FIG. 6, the light-transmitting groove processing step forms a light-transmitting groove 111 in the button body 110 so that light passes through the button body 110 in the forward direction. The light transmitting groove 111 is formed in the button body 110 using an engraver, a CNC, a laser, or the like. In this case, the button body 110 may be separated into the inner portion 110a and the outer portion 110b by the light transmitting groove 111. That is, when the light emitting groove 111 is formed in the shape of numbers, letters, symbols, figures, such as "0", "ㅁ", "A", etc., the inner portion 110a and the outer portion 110b based on the light emitting groove 111. ) Can be separated. Accordingly, the first transmission part 200 is formed on the rear surface of the button body 110 to prevent the inner part 110a separated from the outer part 110b from being separated and incompletely displaying the shape of a letter or a sign. In detail, as shown in FIG. 6 (a), as the light transmitting groove 111 is formed, the inner part 110a separated from the outer part 110b is fixed while being attached to the first rear part 210, and the first part is fixed to the first back part 210. The rear portion 210 is attached to the outer portion 110b so that the letter shape of the light transmitting groove 111 is completely maintained.

Such a light transmitting groove 111 is formed such that the cross section is gradually smaller as the rear portion as shown separately enlarged in Figure 6 (a). That is, the light transmitting groove 111 is formed as a slanted inclined side of 1 ° ~ 5 ° gradually becomes narrower toward the rear. Accordingly, when the second transmission part 300b is filled in the light transmission groove 111 and formed, the second transmission part 300b formed in the light transmission groove 300b is formed in an undercut structure so that the inner part 110a protrudes or separates forward. Can be prevented.

As illustrated in FIG. 7, the second transmission part forming step includes

second transmission parts

300a and 300b made of a light-transmitting material on the back surface of the button body 110 on which the first transmission part 200 is formed and the light transmitting groove 111. To form. The

second transmission parts

300a and 300b are integrally formed with the button body 110 by an insert injection method. At this time, the second transmission portion (300a, 300b) is a synthetic resin of the same material as the first transmission portion 200, the first transmission portion 200 and the second transmission portion (300a, 300b) is firmly coupled while being fused at the interface.

In detail, as illustrated in FIG. 7A, the second transmission part 300a formed on the rear surface of the button body 110 includes the second rear surface portion 310 and the second coupling portion 320. The second back portion 310 covers the first coupling portion 220 and includes a locking portion 321 formed by being filled in the locking groove 221. As such, since the locking portion 321 is formed in the locking groove 221, the coupling force between the first transmission portion 200 and the second transmission portion 300a may be further increased. The second coupling part 320 protrudes rearward from the second rear part 310 to protrude to the rear of the button body 110 and is coupled to an electronic device. An embodiment of the present invention is coupled to a vehicle by an engine start / stop button and connected to an engine control system. In addition, the second coupling part 320 is made of a light-transmitting material and further protrudes to the rear of the button body 110, so that light is transmitted along the side circumference of the button body 110. Accordingly, an annular light is emitted along the circumference of the button key, thereby improving the visibility of the button key and improving the luxury and aesthetics. As described above, the second transmission part 300b filled and filled in the light transmitting groove 111 prevents separation of the inner part 110a.

The metal light emitting button key manufactured by the above-described method includes a button main body 110 having a light transmitting groove 111 formed therein, and a first transmissive part 200 made of a light transmissive material formed on the rear surface of the button main body 110. And second

transmissive parts

300a and 300b of a light-transmissive material formed on the rear surface of the button body 110 on which the first transmissive part 200 is formed. Detailed description of each configuration is omitted because it is already described in the manufacturing method described earlier.

Second embodiment

FIG. 8 (a) is a rear perspective view showing the button body and the first transmission part separated from each other in order to explain the step of forming the first transmission part according to the second embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a cross section of a button body and a first transmission unit coupled to each other to explain the first transmission unit forming step according to the second embodiment, and FIG. 8 is a cross-sectional view showing a cross section of a button body and a first transmission unit coupled to each other, and FIG. 8 (d) illustrates the steps of forming a second transmission unit according to a second embodiment of the present invention. A cross-sectional view showing a cross section.

The method of manufacturing a metal light emitting button key according to the second embodiment of the present invention includes a shape processing step, a first transmitting part forming step, a light transmitting groove processing step and a second transmitting part forming step as in the first embodiment.

The shape machining step according to the second embodiment is the same as the first embodiment, and the second embodiment has a difference in the first transmission part forming step compared with the first embodiment.

In the forming of the first transmission part, as shown in FIG. 8 (a), the first transmission part 200 having a thickness of 0.3 to 1.5 mm is first formed, and the first transmission part 200 is formed on the first transmission part 200 in the front-rear direction. A plurality of through holes 230 penetrate to each other. As shown in FIG. 8A, the first transmission part 200 is formed in a substantially disk shape and is wider than a portion where the light transmission groove 111 is to be formed so as to cover the entire light transmission groove 111. The shape of the first transmission part 200 is not limited to the disk shape as in the second embodiment, but may be formed in various shapes. As shown in FIG. 8 (b), the first transmission part 200 having the through hole 230 is attached to the rear surface of the button body 110 by an adhesive attachment method or a heat fusion method.

In the light emitting groove processing step, the light emitting groove 111 is formed in the button body 110 as in the first embodiment. In this case, as shown in FIG. 8C, the light transmitting groove 111 communicates with the through hole 230, and the inner part 110a is attached to and fixed to the first transmission part 200.

In the forming of the second transmission part, similarly to the first embodiment, the

second transmission parts

300a and 300b of the light transmitting material are formed on the back surface of the button body 110 on which the first transmission part 200 is formed and the light transmitting groove 111. Form. In this case, as illustrated in FIG. 8D, the second transmission part 300b is filled in the light transmission groove 111 through the through hole 230 and formed in the light transmission groove 111.

As mentioned in the first embodiment, the first transmission part 200 may be formed without including the configuration of the first coupling part 220. Accordingly, the locking part 321 is formed in the second transmission part 300a. There is no need to do it.

Except for the above matters, the description is the same as in the first embodiment, and thus detailed description thereof will be omitted.

Third embodiment

9 is a cross-sectional view showing a cross section of the metal light-emitting button key according to the third embodiment of the present invention.

The method of manufacturing a metal light emitting button key according to the third exemplary embodiment of the present invention includes a shape processing step, a first transmitting part forming step, a light transmitting groove processing step, and a second transmitting part forming step as in the first embodiment.

The shape machining step, the first transmitting part forming step, the light transmitting groove processing step and the second transmitting part forming step according to the third embodiment are the same as the first embodiment. However, in the third embodiment, the light emitting groove is divided into a first light emitting groove 111a and a second light emitting groove 111b for convenience of description. The first light emitting groove 111a and the second light emitting groove 111b may be respective light emitting grooves formed along a shape of a different letter or code among a plurality of light emitting grooves formed in the button body 110, or may be a specific letter or One floodlight groove formed along the shape of the sign may be divided into two parts.

The first transmission groove 111a is formed by filling the second transmission portion 300b as in the first or second embodiment. The colored pad 400 is inserted into the second floodlight groove 111b. Specifically, before the step of forming the second transmission portion on the back of the button body 110, as shown in Fig. 9 (a), a light transmitting material on the back of the button body 110 is formed with the second light-transmitting groove (111b) Place the colored pad 400 of. The colored pad 400 may be made of a thin film, and the second light transmitting groove is formed by the second transmission part 300a by forming the second transmission part 300a on the back surface of the button body 110 by the second transmission part forming step. It is pushed to 111b. In addition, as illustrated in FIG. 9B, the colored pad 400 may be formed to fit the shape of the second floodlight groove 111b and inserted into the second floodlight groove 111b. As such, as the colored pad 400 is disposed in the second floodlight 111b, the light passing through the first floodlight 111a and the second floodlight 111b is shined in at least two different colors. That is, by adding a colored pad 400 to the back of the button body 110, light of various colors can be transmitted from one button key.

Fourth embodiment

In the method of manufacturing a metal light emitting button key according to the fourth embodiment of the present invention, as shown in FIGS. 10 to 16, an adhesive coating step, a light-transmitting groove processing step, a rib pressing step, a shape processing step, a first transmission part forming step And a rib removing step and a second permeation part forming step.

In the adhesive applying step, the thermosetting adhesive is applied to one surface of the metal plate 100 and then heated and dried to form the adhesive layer 120.

As shown in FIG. 11, the light transmitting groove processing step processes the light transmitting groove 111 along the shape of a letter or a sign on the metal plate 100, and the inner part of the metal plate 100 separated from each other by the light transmitting groove 111. A rib 112 connecting the 110a and the outer portion 110b is formed. That is, when processing the light transmitting groove 111 in the metal plate 100, the rib connecting the inner portion (110a) and the outer portion (110b) so that the inner portion (110a) and the outer portion (110b) is not completely separated by the light transmitting groove (111). Leave (112).

As shown in FIG. 12, the rib pressing step protrudes the rib 112 to the rear to protrude to the rear of the metal plate 100 on which the adhesive layer is formed.

In the shape processing step, as shown in FIG. 13, the metal plate 100 is pressed to form a button body 110 having a convex shape forward. At this time, the adhesive layer 120 is formed on the inner surface that is the back of the button body (110).

As shown in FIG. 14, the first transmission part forming step forms a first transmission part 200 made of a light transmissive material on the back surface of the button body 110. Specifically, the first transmission part 200 is formed in the button body 110 by the insert injection method. At this time, the first transmission portion 200 is to increase the adhesive force with the button body 110 by the adhesive layer 120. The first transmission part 200 is filled in the light transmission groove 111 and is formed in the light transmission groove 111.

The rib removing step removes the rib 112 together with a portion of the first transmission portion 200 covering the rib 112, as shown in FIG. 15. Accordingly, the removal groove 113 is formed in the portion where the rib 112 is removed. As the rib 112 is removed, the inner part 110a and the outer part 110b are completely separated, but the inner part 110a and the outer part 110b are attached to the first transmission part 200 and remain fixed.

In the forming of the second transmission part, as shown in FIG. 16, the second transmission part 300a of the light transmissive material is formed on the rear surface of the button body 110 on which the first transmission part 200 is formed. In this case, the second transmission part 300a is filled in the removal groove 113 and is formed in the removal groove 113.

Compared to the first embodiment, the method of manufacturing the metal light emitting button key according to the fourth embodiment includes a rib pressing step and a rib removing step and the steps are slightly different, but the shape processing step, the first transmission part forming step, and Since the basic method of forming the second transmission part is the same or similar, parts not described in the fourth embodiment may refer to the first embodiment.

The metal light emitting button key and the metal light emitting button key manufacturing method of the present invention is not limited to the above-described embodiment can be carried out in various modifications within the scope of the technical idea of the present invention.

Claims

A shape processing step of forming a button body by processing a metal plate;

A first transmission part forming step of forming a first transmission part of a light transmissive material on a rear surface of the button body;

A light-transmitting groove processing step of forming a light-transmitting groove in the button body so that light is transmitted forward along the shape of a letter or a sign, and the button body is separated into an inner portion and an outer portion by the light-transmitting groove; And

And a second transmissive part forming step of forming a second transmissive part of a light transmissive material on the back of the button body and the light transmitting groove in which the first transmissive part is formed,

The method of claim 2, wherein the inner side and the outer side separated from each other in the light processing groove processing step are supported by the first transmission unit.
The method according to claim 1,

In the forming of the first permeable part, the first permeable part is integrally formed with the button body by insert injection after applying a thermal adhesive agent to the rear surface of the button body,

And the inner part is attached to and fixed to the first transmission part.
The method according to claim 1,

In the forming of the first permeable part, the first permeable part is attached to the button body by an adhesive method or a heat fusion method.

And the inner part is attached to and fixed to the first transmission part.
The method according to claim 1,

And forming a through hole through the first transmission part in the front-rear direction and communicating with the light transmitting groove in the first transmission part.
The method according to claim 1,

The light transmitting groove is formed to have a smaller cross-sectional area toward the rear, and when the light transmitting groove is filled with the second transmission portion, the second transmission portion formed in the light transmission groove has an undercut structure to prevent the front part from leaving the inner portion. Method of manufacturing a metal light emitting button key, characterized in that to prevent.
The method according to claim 1,

The first transmission portion is formed of a first back portion formed on the back of the button body, and a first coupling portion protruding from the first back portion to form a locking groove,

And the second transmission part comprises a locking part that is formed by being filled in the locking groove.
The method according to claim 1,

The floodlight groove is composed of a first floodlight groove and a second floodlight groove,

The second transmission portion is formed in the first floodlight groove,

On the back of the button body, a colored pad made of a light transmissive material is disposed at a position where the second light transmitting groove is formed before the second transmitting part is formed.

And the light passing through the first floodlight groove and the second floodlight groove shines in at least two different colors.
A light-transmitting groove processing step of processing a light-transmitting groove along a shape of a letter or a sign on the metal plate and forming ribs connecting the inner and outer parts of the metal plate separated from each other by the light-transmitting groove;

A rib pressing step of pressing the rib to protrude to the rear of the metal plate;

A shape processing step of forming a button body by processing the metal plate;

A first transmission part forming step of forming a first transmission part of a light transmissive material on a rear surface of the button body;

A rib removing step of removing the rib together with a portion of the first permeable portion covering the rib; And

And a second transmissive part forming step of forming a second transmissive part of a light transmissive material on a rear surface of the button body where the first transmissive part is formed.
A metal button body formed with a light transmission groove through which light is transmitted along a shape of a letter or a sign and separated into an inner side and an outer side by the light transmitting groove;

A first transmissive part formed on a rear surface of the button body and having an inner side portion and an outer side portion respectively attached thereto; And

It comprises a second transmission portion of a light-transmissive material formed on the back of the button body is formed with the first transmission portion,

The first transmission portion is formed of a first back portion formed on the back of the button body, and a first coupling portion protruding from the first back portion to form a locking groove,

The second transmission part includes a second back part covering the first coupling part and a locking part formed by being filled in the locking groove, and protruding rearward from the second back part to protrude to the rear of the button body and to the electronic device. A metal light emitting button key comprising a second coupling portion to be coupled.
The method according to claim 9,

The first transmission portion is formed with a through hole which penetrates the first transmission portion in the front-rear direction and communicates with the light transmitting groove.

And the second transmission part is filled in the floodlight groove through the through hole.