KR20160082735A - IMS switch integrated metal garnish for door trim using etching - Google Patents

Abstract

The present invention relates to a switch-integrated metal garnish and a manufacturing method thereof. The switch-integrated metal garnish can have the identity and the integrity of a garnish and a switch button, and realizes luxurious interior by applying a metal etching method, forming a pattern on a metal sheet, performing matt treatment by bead hitting, and providing the texture at an equal level to aluminum for the metal sheet. The switch-integrated metal garnish can improve the operation of the switch button and can improve effects of indoor mood lighting by using a silicone pad.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a metal garnish integrated with a switch employing an etching method,

The present invention provides a metal sheet having a texture equivalent to that of an aluminum material by applying a metal etching method, improving the unity between the switch button and the garnish body, and simplifying the structure by applying a silicon pad, So as to improve indoor aesthetics and sensibility quality, and a manufacturing method thereof.

The garnish installed in the door trim is one of the important components that constitute the interior of the vehicle, and realistic aluminum material is applied to an expensive high-grade car to realize a premium aesthetic.

However, since aluminum is expensive, it is a reality that the rate of use is lower than that of mid-range vehicles.

In addition, in the existing garnish, a switch for operating the convenience means may be provided in the garnish installed in the existing door trim. In the existing garnish, the garnish and the switch block are separately manufactured, and then the garnish and the switch, I was doing.

However, in this conventional method, since the garnish and the switch block are manufactured separately, they are assembled together at the final stage. Therefore, in order to form a sense of unity between the garnish and the switch button, It is necessary to have a precise joining structure that ensures precise alignment so that the positional alignment does not deviate even when assembling both after fabrication.

In summary, in order to have a sense of unity between the garnish and the switch button, it is necessary to design precisely so that the curvatures are consistent with each manufacturing process, and in addition, a very precise joining structure is required in order to precisely align the switch button with the garnish . In the case where such a precise coupling structure is not supported, the alignment between the garnish and the switch button is not ensured and the sense of unity is lowered.

Fig. 9 is a longitudinal sectional view showing a longitudinal section of a structure in which a switch and a garnish separately manufactured as in the prior art are assembled. 9, in the case where the portion of the garnish 50 to form the switch button 55 is a curved surface, the switch button 55 and the garnish 50, which are separately manufactured, And the curvatures of the gauze 50 coincide with each other. However, separately preparing the switch buttons 55 corresponding to the curvature of each gannet 50 causes an increase in the number of parts, which is not economical.

The switch button 55 of the conventional gauze requires an injection mold 57 for maintaining the shape and a structure 53 for forming a contact portion for contacting the PCB 59 of the switch block 58 is required As a result, the structure of the switch button becomes complicated.

A conventional technique for the garnish structure of a vehicle door is disclosed in Japanese Laid-Open Patent Publication No. 2012-121529 (published on June 28, 2012, entitled "Garnish Structure").

The present invention has been conceived to solve the problems of the prior art described above, and it is an object of the present invention to provide a method of manufacturing a metal sheet by applying a metal etching method to a metal sheet to give a texture like real aluminum, To provide a switch-integrated type metal garnish which improves the feeling of unity, simplifies the structure of parts, facilitates maintenance, and satisfies both indoor aesthetics and improved sensibility quality.

According to another aspect of the present invention, there is provided a method of manufacturing a metal sheet, comprising the steps of: forming a pattern on a metal sheet by etching and forming a cutout for a switch button; molding the patterned metal sheet with the cut- A step of forming a garnish body by cutting the edge of the press-formed metal sheet; a step of applying a hot-melt adhesive to the rear surface of the garnish body; and a step of forming a silicon support portion on the hot melt adhesive applied to the garnish body And a step of forming a garnish support frame on the garnish main body through insert injection. The method for manufacturing a switch-integrated metal garnish according to claim 1,

In order to achieve the above object, it is preferable that the bead is struck on the surface of the metal sheet prior to the press forming to perform the matte treatment.

It is another object of the present invention to provide a garnish of a garnish comprising a garnish body made of a metal material having a cut-off hole, a switch part including a switch button located inside the cut-off hole of the garnish body, Wherein the switch button and the garnish main body are formed by cutting one metal sheet in an etching manner and then pressed into one press mold so that the switch button and the garnish main body are formed into a single curved surface Is formed by the metal gauze of the switch type.

The switch-integrated metal garnish according to the present invention has a texture equivalent to that of real aluminum by performing pattern formation on the surface of a metal sheet by etching and performing matting treatment by bead strike, It is possible to implement interior that gives a feeling of beauty.

In addition, in the conventional method in which the garnish and the switch button are separately manufactured, in order to form a sense of unity between the garnish and the switch button, a complicated design such as matching the curvatures of both is necessary, However, in the switch-integrated metal garnish according to the present invention, since the garnish and the switch button are integrally formed from one metal sheet by applying the etching method and both are press-molded together, precise design matching the curvature, It is possible to realize a perfect sense of identity and unity between the garnish and the switch button.

In addition, since the silicon supporting part supporting the switch button plays a role of a light guide plate necessary for light emission on the surface, it has an advantage of showing the effect of a soft indoor mood illumination.

In addition, since the switch button is attached to the garnish by using the silicon pad, it is possible to improve the operation feeling of the switch button because of the flexibility of the silicone material without requiring any separate injection molding.

Further, since the garnish body and the switch button are integrally formed and then press-formed together, a continuous pattern extending from the garnish body to the switch button can be formed.

FIG. 1 is a perspective view showing an inside of a door provided with a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 2 is a view illustrating a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 3 is a cross-sectional view showing a cross-sectional view of a switch-formed portion of a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 4 is a longitudinal sectional view showing a longitudinal section of a switch-formed portion of a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 5 is a view illustrating a state in which a continuous pattern is formed on a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 6 is a flowchart illustrating a manufacturing process of a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 7 is a process diagram briefly showing a manufacturing process of a switch-integrated metal garnish according to a preferred embodiment of the present invention,
FIG. 8 is a cross-sectional view illustrating the structure of a switch unit of a switch-integrated metal garnish according to a preferred embodiment of the present invention,
Fig. 9 is a longitudinal sectional view showing a longitudinal section of a structure in which a switch and a garnish separately manufactured as in the prior art are assembled.

Hereinafter, a switch-integrated metal garnish according to a preferred embodiment of the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

First, a method of manufacturing a switch-integrated metal garnish according to a preferred embodiment of the present invention will be described.

FIG. 6 is a flow chart showing a process for manufacturing a switch-integrated metal garnish according to a preferred embodiment of the present invention, FIG. 7 is a process diagram briefly showing a process for manufacturing a switch-integrated metal garnish according to a preferred embodiment of the present invention, FIG. 8 is a cross-sectional view illustrating the structure of a switch portion of a switch-integrated metal garnish according to a preferred embodiment of the present invention. 6 to 8, a method of manufacturing a switch-integrated metal garnish according to the present invention comprises the following steps.

First, a metal sheet 2 made of a stainless steel material is prepared and chemical first etching is performed on one surface of the metal sheet 2 using an acid to form a desired pattern 3 on the metal sheet 2. After the formation of the pattern 3 on the metal sheet 2 is completed, a cutting area for forming a contour line for forming the switch button on the metal sheet 2 through the secondary etching and an incision area for forming the pattern are formed.

When performing the secondary etching for forming the incision region in the metal sheet 2, the second etching is performed in a state where the masking process is performed so that the remaining region except for the portion to be cut is not etched. That is, a pattern is formed on the surface of the metal sheet 2 by the primary etching, and the portion to be cut of the metal sheet 2 is etched by etching by the secondary etching. The materials and processes used for etching are well known, and a detailed description thereof will be omitted.

The switch button 25 is formed by removing the outer contour (the portion of the metal sheet to be removed by etching) of the portion to be the switch button 25 of the metal sheet 2 through the etching process. As a result, the portion 13 for forming the garnish main body and the switch button 25 are simultaneously made from one metal sheet 2. The contour line of the switch button 25 is not completely removed from the metal sheet 2 in the course of the secondary etching forming the switch button 25 and a partly thin connection line (not shown) is left, (25) is separated from the metal sheet (2). Therefore, the switch button 25 is integrally formed on the metal sheet 2 in a bonded state. Since the portion 13 where the garnish main body is to be formed and the switch button 25 are integrally formed from one metal sheet 2 on which the pattern is formed, the portion 13 where the garnish main body is to be formed and the switch button 25, A sense of unity is obtained.

The metal sheet 2 that has undergone the pattern formation and the cutting of the incision area is subjected to a matting treatment. The matte treatment is performed by forming microscopic irregularities invisible on the surface of the metal sheet 2 to significantly reduce the reflectance of light. With this matte treatment, even a non-aluminum metal can achieve a glossy surface texture as in real aluminum.

The method of performing the matte treatment is performed by striking fine beads such as fine glass powder on the surface of the metal sheet 2 (S10) (Fig. 7 (a), (b)).

The metal sheet 2 on which the pattern and the switch button 25 are formed and the matte processing is performed is mounted on the press mold 200 and press molding is performed (S20) (Fig. 7 (c)). The edge of the portion 13 where the garnish body is to be formed in the future in the metal sheet 2 through press molding is inwardly bent and the portion inward of the edge is formed in a gentle curved surface, The shape of the garnish becomes. At this time, the switch button 25 coupled to the metal sheet 2 is deformed integrally with other parts of the metal sheet 2 in accordance with the shape of the press mold 200. In other words, the switch buttons 25 to be positioned inside the garnish body 10 are formed into a gently curved surface in conformity with the shape of the press mold 200, like the inner shape of the garnish body 10. [

When the edge of the portion 13 to be a next garnish body formed into a three-dimensional shape through the press forming is cut using the laser processing machine 205, the garnish body 10 is formed (Fig. 7 (d)). Various methods can be used for cutting the edge of the part 13 to be the garnish body, but in this embodiment, cutting by laser is applied.

Then, hot melt adhesive is applied to the peripheral area including the switch button 25 from the rear surface of the garnish body 10 (Fig. 7 (e)).

Thereafter, silicon is sprayed over the area to which the hot melt adhesive of the garnish main body 10 is applied and is applied. The silicon support 21 is formed on the rear side of the garnish body 10 by pressing the silicon body 10 with the mold 207 while applying heat to the thermal welding apparatus f)). Silicone pressed on the back surface of the garnish body 10 in the process of heat fusion is cut into a cutting area for forming characters, figures and the like inside the switch button 25 and a cutting area for forming the contour of the edge of the switch button 25 So that the silicon is exposed to the front surface of the garnish body 10 through the incision region. At the same time, the silicon support portion 21 is firmly bonded to the rear surface of the garnish body 10 by the hot melt adhesive.

After the formation of the silicon support part 21 is completed, the garnish body 10 is transferred to the injection mold 210 and then the resin is injected onto the rear surface of the garnish body 10 by injection molding to form the garnish support frame 30 (S60) (Fig. 7 (g)). At this time, the injection mold 210 is equipped with a cover block 212 for covering the silicon support 21 to prevent the resin from penetrating into the silicon support 21 of the garnish body 10.

After the garnish supporting frame 30 is formed on the rear surface of the garnish body 10 through insert injection, the metal garnish having the switches formed integrally is completed by connecting the switch module 40 to the rear surface of the silicon supporting portion 21 ((H), (i) of Fig. 7).

Hereinafter, the structure of a metal garnish integrally formed with the switch manufactured by the above-described manufacturing method will be described.

FIG. 1 is a perspective view showing the inside of a door provided with a switch-integrated metal garnish according to a preferred embodiment of the present invention, FIG. 2 is a view illustrating a switch-integrated metal garnish according to a preferred embodiment of the present invention, 3 is a cross-sectional view showing a cross-section (A-A 'in FIG. 2) of the switch-formed portion of the switch-integrated metal garnish according to the preferred embodiment of the present invention; and FIG. 4 is a cross- (B-B 'in Fig. 2) of a portion where the metal garnish is switched. Fig.

1 to 4, a metal garnish (hereinafter, referred to as 'metal garnish') formed integrally with a switch according to the present invention is formed inside the vehicle door 1 and includes a garnish body 10, (20) and a garnish support frame (30) formed on the rear surface of the garnish body (10).

The garnish body 10 is formed with a gently curved outer surface and is bent inside the edge, and a cut-out hole 11 is formed so that the switch button 25 is positioned inside. The metal sheet 2 used for forming the garnish body 10 and the switch button 25 may be made of various metal materials capable of plastic deformation and is not particularly limited to a material. Of course, an aluminum material may also be used. In this embodiment, a stainless steel material is used to realize a texture closest to actual aluminum.

The switch unit 20 is composed of switch buttons 25 positioned inside the cut-out hole 11 of the garnish body 10 and a silicon support 21 supporting the switch buttons 25. Protrusions 22 for separating and positioning the respective switch buttons 25 and protrusions (not shown) exposed by a cutout (not shown) forming a pattern of the switch button 25 are formed on one surface of the silicon support 21, And a mounting groove 23 for inserting the contact portion 41 is formed on the opposite surface. The silicon support portion 21 is adhered to the periphery of the switch button 25 and the cutting hole 11 of the garnish body 10 through a hot melt adhesive.

As shown in FIG. 3, the metal garnish having the above-described configuration is a cross section of the garnish body 10 and the switch button 25, which is close to a straight line having almost no curvature, as shown in FIG. 3, .

However, as shown in FIG. 4 showing a cross-section of B-B 'of FIG. 1, the garnish body 10 and the switch button 25 form a gentle curved surface in the longitudinal direction of the metal garnish. The curve formed by the outer surfaces of the garnish main body 10 and the switch buttons 25 in the longitudinal cross section is located on one continuous curve C continuously. That is, the surfaces extending from the garnish body 10 through the switch button 25 to the garnish body 10 are smoothly connected successively. The reason why the garnish main body 10 and the switch buttons 25 can be located on a single curve C is that the portion 13 and the switch button 25, Is formed integrally with the metal sheet 2 and the metal sheet 2 is put into the press mold 200 and press-molded at the same time.

The garnish supporting frame 30 is integrally formed with the garnish body 10 by a method of insert injection on the rear surface of the garnish body 10 made of metal and is provided with engaging means (not shown) for engaging the inside of the door 1 And supports the rear surface of the garnish main body 10 to maintain the shape of the garnish main body 10.

The switch module 40 is coupled to the mounting groove 23 of the silicon support 21 so as to insert the contact portion 41 of the PCB of the switch module 40 into the metal garnish.

The switch-integrated metal garnish of the present invention produced by such a manufacturing method has the following operational effects.

According to the switch-integrated metal garnish according to the present invention, the garnish body 10 and the switch button 25 are integrally formed in a single metal sheet 2, and the garnish body 10 and the switch button 25 are jointly formed The garnish main body 10 and the switch button 25 form a part of a single curved surface and as a result a homogeneous feeling and a sense of unity are obtained between the garnish main body 10 and the switch button 25. [ That is, the outer surfaces of the garnish body 10 and the switch button 25 are located on a single curved surface. Such a sense of identity and a sense of unity are possible because the garnish body 10 and the switch button 25 are integrally pressed together into a press die and press-formed simultaneously.

In the case of the conventional garnish formed by separately manufacturing the garnish body and the switch button and combining them at the final assembly stage, the garnish body and the switch button are formed in the shape of each curved surface corresponding to different positions of a single curved surface In addition, a precise joining structure is required to form a perfect alignment even when joining the garnish body and the switch button. Therefore, the structure of the product is complicated and the manufacturing process requires precision work.

However, in the present invention, since the garnish main body 10 and the switch button 25 are integrally formed in one metal sheet 2 by applying the metal etching, and they are pressed together to form a three-dimensional shape, And the switch button 25 and the formation of a single curved surface are automatically performed. Therefore, it is not necessary to precisely manufacture the garnish main body 10 and the switch buttons 25 in a predetermined curved shape, and even if there is no precise coupling structure between the garnish main body 10 and the switch button 25, A sense of unity can be given.

5, in the present invention, since the garnish body 10 and the switch button 25 are integrally molded from one metal sheet 2 and then press-formed together, A continuous pattern 103 having a perfect alignment connected to the button 25 can be formed. That is, the garnish body 10 and the switch button 25 are integrally formed through etching in a single metal sheet 2, and a pattern and a cut portion are formed on the integral body of the garnish body 10 and the switch button 25 It is possible to maintain a substantially perfect alignment between the garnish body 10 and the switch button 25 and thus to provide a perfect fit between the garnish body 10 and the switch button 25. [ A continuous pattern 103 in which an alignment is made can be formed.

In addition, LED illumination (not shown) is provided inside the garnish body 10, and the silicon support portion 21 supporting the switch button 25 functions as a light guide plate necessary for surface emission, (21) exhibits a soft indoor mood lighting effect.

Further, the flexibility of the silicon material supporting the switch button 25 improves the feeling of operation of the switch button 25. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And additions should be considered as falling within the scope of the claims of the present invention.

2 metal sheet
3 patterns
10 garnish body
11 incisions
20 switch section
21 silicon support
22 protrusion
23 mounting groove
25 Switch button
30 garnish supporting frame
40 switch module

Claims (3)

Forming a pattern on the metal sheet in an etching manner and forming an incision for the switch button;
Molding the metal sheet on which the pattern is formed and the cut-out portion is formed, into a press mold;
Forming a garnish body by cutting an edge of the metal sheet;
Applying a hot melt adhesive to the rear surface of the garnish body;
Forming a silicon support on the hot melt adhesive applied to the garnish body; And
And forming a garnish support frame on the garnish main body through insert injection. ≪ RTI ID = 0.0 > 8. < / RTI > The method according to claim 1,
Wherein the bead is struck to the surface of the metal sheet prior to the press molding to perform a matte treatment. A garnish body made of a metal and having a cut-out hole;
A switch portion including a switch button located inside the cutting hole of the garnish main body; And
And a garnish support frame made of a resin material integrally formed on a rear surface of the garnish body,
Wherein the switch button and the garnish body are formed by cutting one metal sheet in an etching manner and then pressed into one press mold so that the switch button and the garnish body form a single curved surface. Switch-integrated metal garnish.

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