JP2018086772A - Indicator panel and two color injection molding method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent light passing through each opening of a concealing portion from leaking from an uncorresponding translucent region of a decorative layer without deteriorating the appearance of the indicator panel. SOLUTION: The plate-shaped resin base material 5 having translucency and a plurality of openings 7a for passing the light of LED 11a are provided, and the translucent material is formed on the back surface side of the base material 5. In the indicator panel 3 provided with the resin concealing portion 7 of the above, on the back surface of the base material 5, there are a plurality of translucent translucent regions 9a and a translucent impermeable region 9b that partitions the translucent regions 9a. A decorative layer made of a film 9 having the above is formed, and the light-transmitting region 9a of the decorative layer is overlapped with the opening 7a of the concealing portion 7. [Selection diagram] Fig. 2

Description

  The present invention has a translucent plate-shaped resin base material and a plurality of openings for allowing light from the light source to pass therethrough, and is formed on the back side of the base material. The present invention relates to an indicator panel provided with a concealing part and a two-color injection molding method thereof.

  Patent Document 1 has a translucent plate-shaped resin base material and a plurality of openings for allowing light from the light source to pass therethrough and is formed on the back side of the base material. An indicator panel having a resin concealing portion is disclosed. In this indicator panel, a decoration having a plurality of translucent translucent areas for transmitting light from a light source and an opaque translucent area separating the translucent areas on a surface of a base material. A layer is formed, and the translucent region of the decorative layer is overlaid on the opening of the concealing portion. And while forming the concave part dented on the front side on the back side of the base material, the light that has passed through each opening part of the concealing part passes through the base material by projecting the concealing part at the periphery of the opening part into the concave part. Thus, leakage from the non-corresponding translucent region of the decorative layer is prevented.

JP 2001-195944 A

  However, in Patent Document 1, since the concave stripe portion is formed on the base material, the concave stripe portion non-formation region of the base material becomes thicker than the concave stripe portion formation region, and sink marks are generated on the surface of the base material. There is a risk of deteriorating the appearance.

  This invention is made | formed in view of this point, The place made into the objective is that the light which passed each opening part of the concealment part does not respond | correspond to a decoration layer, without deteriorating the external appearance of an indicator panel. It is to prevent leakage from the light transmitting region.

  In order to achieve the above object, the present invention is characterized in that the decorative layer is formed on the back side of the substrate.

  Specifically, the first invention has a plate-shaped resin base material having translucency and a plurality of openings for allowing light from the light source to pass therethrough, and is formed on the back side of the base material. The following solution was taken for an indicator panel provided with a non-translucent resin concealing portion.

  That is, in the first invention, a decorative layer having a plurality of translucent translucent areas and a translucent translucent area that partitions the translucent areas is formed on the back surface of the base material. And the translucent area | region of the said decoration layer has overlapped with the opening part of the said concealing part, It is characterized by the above-mentioned.

  A second invention is a two-color injection molding method for molding the indicator panel according to the first invention, wherein the decorative layer is formed of a film having a positioning through hole, and the surface side of the substrate is molded. A first mold that molds and a molding surface that molds the back surface side of the base material, and an injection nozzle is mounted, and an outlet side end of the injection nozzle protrudes from the molding surface, or the injection nozzle A second mold having a convex portion formed on the molding surface around the jet nozzle and a third mold for molding the back side of the concealing section are prepared, and the jet nozzle side end of the injection nozzle of the second mold or The film is set on the molding surface of the second mold so that the convex portion penetrates the positioning through hole of the film, the first mold and the second mold are clamped, and the first cavity is between them. In this state, from the injection nozzle into the first cavity By injection-filling the photo-resin, a substrate is formed in which a concave portion is formed at the protruding portion of the injection nozzle or the convex portion on the back surface, and the film is in close contact with the non-recessed region on the back surface. After opening the first mold and the second mold, the first mold and the third mold are clamped to form a second cavity between the base material and the third mold, The concealing portion is formed by injecting and filling an opaque resin from the gate into the second cavity.

  According to a third invention, in the two-color injection molding method for an indicator panel according to the second invention, a recess is formed in the molding surface of the second mold so as to be recessed in the mold opening direction. The exit-side end portion or the convex portion protrudes from the bottom surface of the recess.

  According to a fourth aspect of the present invention, in the two-color injection molding method for an indicator panel according to the third aspect of the present invention, the jet nozzle of the injection nozzle is disposed in the recess.

  A fifth invention is the two-color injection molding method for an indicator panel according to any one of the second to fourth inventions, wherein the gate is formed with the second cavity formed on the molding surface of the third mold. It is formed in the location facing the recessed part of a base material, It is characterized by the above-mentioned.

  According to the first to fifth inventions, since no base material is interposed between the concealing portion and the decorative layer, the light that has passed through each opening of the concealing portion leaks from the non-corresponding translucent region of the decorative layer. Is prevented.

  Moreover, since it is not necessary to form a concave line part like patent document 1 in a base material in order to prevent light leakage, the deterioration of the external appearance of the indicator panel by generation | occurrence | production of a sink can be prevented.

  According to the second aspect of the present invention, the positioning through hole forming portion of the film can be positioned in the direction along the molding surface of the second die by penetrating the second type injection nozzle or the convex portion through the positioning through hole of the film. Therefore, the positioning operation is facilitated as compared with the case where the film is positioned with a double-sided tape or the like.

  Further, since the translucent resin is injected toward the projecting direction of the injection nozzle or the convex portion and does not directly hit the film, distortion and damage of the film due to heat of the translucent resin and injection pressure are prevented.

  According to the third invention, the cavity volume around the ejection nozzle of the injection nozzle is expanded in the mold opening direction as compared with the case where the second type injection nozzle or convex portion is protruded from the non-recessed portion of the molding surface. Therefore, the fluidity of the translucent resin in the first cavity is improved. Accordingly, the first cavity can be more reliably filled with the translucent resin.

  According to the fourth aspect of the present invention, the distance between the injection nozzle outlet and the first mold is wider than when the injection nozzle outlet is disposed outside the recess. The fluidity in the cavity is increased. Accordingly, the first cavity can be more reliably filled with the translucent resin.

  According to the fifth invention, since the opaque resin is injected toward the concave portion of the base material and does not directly hit the film, the distortion or damage of the film due to the heat or injection pressure of the opaque resin is prevented. Is done.

It is a top view of the indicator panel unit provided with the indicator panel which concerns on Embodiment 1 of this invention. It is sectional drawing in the II-II line of FIG. It is a shaping | molding process figure corresponding to the II-II line of FIG. 1 which shows the process of shape | molding a base material in the shaping | molding method of the indicator panel which concerns on Embodiment 1 of this invention. FIG. 4 is a view corresponding to FIG. 3 showing a process of forming a concealing layer. FIG. 5 is a diagram corresponding to FIG. 4 of the second embodiment. FIG. 4 is a diagram corresponding to FIG. 3 of the third embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIGS. 1 and 2 show a shift indicator panel unit 1 attached in the vicinity of a front end portion of a console (not shown) installed so as to extend in the longitudinal direction of the vehicle body between a driver's seat and a passenger seat of an automobile. The shift indicator panel unit 1 includes an indicator panel 3 having a substantially rectangular shape in plan view according to Embodiment 1 of the present invention.

  The indicator panel 3 includes a plate-shaped resin base material 5 having translucency. On the back surface side of the base material 5, an opaque resin-made concealing portion 7 colored with a jet black pigment is formed. A rectangular opening 5 a that is long in the vehicle front-rear direction is formed at a location slightly to the left of the center of the base material 5. In the vicinity of the right outer side of the front end and the rear end of the opening 5a on the back surface of the substrate 5, a convex portion 5b having a substantially circular shape in plan view is integrally projected, and a flat surface is formed on the end surface of the convex portion 5b. A substantially circular recess 5c is formed. The thickness of the substrate 5 is set to 2.5 mm or more throughout.

  The concealing part 7 is formed in a substantially plate shape and overlaps the base material 5 from the back side. In the concealing portion 7 in the vicinity of the right outer side of the middle portion in the front-rear direction of the opening 5a of the substrate 5, a plurality of openings 7a having a rectangular shape in plan view for allowing the light of the LED 11a described later to pass therethrough are formed at intervals. Has been. In addition, a partition wall portion 7b is integrally projected at the periphery of each opening portion 7a on the back surface of the concealing portion 7 so as to form a space portion S on the inner side. Further, the concealing portion 7 is formed with a bent portion 7c that bends to the back side along the convex portion 5b of the base material 5, and the concave portion of the base material 5 is formed on the surface of the bent portion 7c on the base material 5 side. A protruding portion 7d protruding into 5c is formed.

  In addition, the film 9 is in close contact with the entire surface of the back surface of the base material 5 where the recess 5c is not formed to form a decorative layer. On the film 9 in the vicinity of the right outside of the opening 5a, a plurality of white light-transmitting regions 9a having a light-transmitting property include a plurality of characters (P , R, N, D, M, +, −). These translucent areas 9a overlap the openings 7a of the concealing part 7. On the other hand, the area | region except the translucent area | region 9a of the film 9 comprises the translucent opaque area 9b colored with the jet-black pigment over the whole. Further, a positioning through hole 9c is formed at a location where the film 9 overlaps the concave portion 5c of the base material 5.

  A printed circuit board 11 is attached to the tip of the partition wall portion 7b of the concealing portion 7 so as to cover the space portion S from the back side with its component surface facing upward. On the component surface of the printed circuit board 11, LEDs 11 a as a plurality of light sources are arranged so as to be accommodated in the respective space portions S. The printed circuit board 11 is provided with a circuit (not shown) for lighting the LED 11a. The light of the LED 11 a passes through the opening 7 a of the concealing part 7 and is irradiated from the back side to the light transmitting region 9 a of the film 9. In FIG. 2, the light path of the LED 11 a is indicated by an arrow X.

  3 and 4 show a two-color injection molding method for the indicator panel 3 configured as described above.

  During molding, the first mold 101 for molding the front surface side of the base material 5, the second mold 103 having the first molding surface 103 a for molding the back surface side of the base material 5, and the back surface side of the concealing part 7 are molded. A third mold 105 having a second molding surface 105a and the film 9 are prepared. On the first molding surface 103a of the second mold 103, a first recess 103b for molding the convex portion 5b of the base material 5 is formed so as to be recessed in the mold opening direction. Further, a mounting hole 103c that penetrates in the mold opening direction is formed in the bottom surface of the first recess 103b of the second mold 103, and the injection nozzle 107 has an end portion on the side of the jet outlet 107a in the mounting hole 103c. The first recess 103b is mounted so as to protrude from the bottom surface, and the jet outlet 107a thereof is directed in the protruding direction within the first recess 103b. The injection nozzle 107 is formed with an ejection hole 107b that extends in the mold opening direction and communicates with the ejection port 107a. A valve gate pin 109 is attached to the ejection hole 107b so as to advance and retreat. 103e is configured. By adopting the valve gate type, the gate cutting process can be eliminated. A plurality of protrusions 105b for forming the opening 7a of the concealing part 7 are formed on the second molding surface 105a of the third mold 105, and a partition of the concealing part 7 is formed on the periphery of the protrusion 105b. A groove 105c for forming the wall 7b is formed. Further, the second molding surface 105a of the third mold 105 is formed with a second recess 105d for molding the bent portion 7c of the concealing portion 7, and at the substantially central portion of the bottom surface of the second recess 105d, A direct gate 105e is formed.

  In order to mold the indicator panel 3, first, as shown in FIG. 3, the end of the injection nozzle 107 of the second mold 103 on the side of the ejection port 107 a passes through the positioning through hole 9 c of the film 9. Is set on the first molding surface 103a of the second mold 103, and the first mold 101 and the second mold 103 are clamped to form a first cavity C1 therebetween. At this time, the end of the injection hole 107a of the injection nozzle 107 of the second mold 103 is passed through the positioning through hole 9c of the film 9, so that the position where the positioning through hole 9c of the film 9 is formed is the first molding of the second mold 103. Since positioning in the direction along the surface 103a is possible, the positioning operation is facilitated as compared with the case where the film 9 is positioned with a double-sided tape or the like. Thereafter, in this state, the valve gate pin 109 is moved backward to inject and fill the translucent resin R1 into the first cavity C1 from the ejection port 107a of the injection nozzle 107, thereby forming the base material 5. A concave portion 5c is formed at the protruding portion of the injection nozzle 107 on the back surface of the base material 5, and the film 9 is in close contact with the entire region of the back surface of the base material 5 where the concave portion 5c is not formed. At this time, since the translucent resin R1 is injected toward the projecting direction of the injection nozzle 107 and does not directly hit the film 9, distortion or damage of the film 9 due to heat of the translucent resin R1 or injection pressure is prevented. . Further, since the end of the injection nozzle 107 on the side of the ejection port 107a protrudes from the bottom surface of the first recess 103b, the end of the injection nozzle 107 on the side of the ejection port 107a is not connected to the first recess 103b of the first molding surface 103a. Compared with the case where it protrudes from the formation location, the cavity volume around the ejection port 107a of the injection nozzle 107 is expanded in the mold opening direction, and the fluidity of the translucent resin R1 in the first cavity C1 is enhanced. Further, compared with the case where the ejection port 107a of the injection nozzle 107 is disposed in the first recess 103b and the ejection port 107a of the injection nozzle 107 is disposed outside the first recess 103b, the ejection port 107a and the ejection port 107a of the injection nozzle 107 are arranged in the first recess 103b. Since the space | interval with the 1 type | mold 101 is wide, the fluidity | liquidity in the 1st cavity C1 of translucent resin R1 is further improved. Therefore, it is possible to reliably fill the first cavity C1 with the translucent resin R1. Moreover, although the convex part 5b formation location of the base material 5 is formed thickly compared with the convex part 5b non-formation location, the 1st recessed part 103b for the jet nozzle 107a of the injection nozzle 107 to shape the convex part 5b is formed. Since the resin pressure around the first recess 103b is increased, the occurrence of sink marks is prevented at the locations where the convex portions 5b of the base material 5 are formed. As the translucent resin R1, PC (polycarbonate), PMMA (acrylic resin), or the like can be used.

  Next, the second mold 103 is moved backward to open the first mold 101 and the second mold 103. After that, as shown in FIG. 4, the third die 105 is advanced with the base material 5 held on the first die 101, and the first die 101 and the third die 105 are clamped to obtain the base material. A second cavity C <b> 2 is formed between the second mold surface 105 a of the third mold 105 and the second mold 105. In this state, the direct gate 105e of the third mold 105 faces the recess 5c of the base material 5. Then, the concealing portion 7 is formed by injecting and filling the opaque resin R2 into the second cavity C2 from the direct gate 105e. At this time, since the opaque resin R2 is injected from the direct gate 105e toward the concave portion 5c of the base material 5 and does not directly hit the film 9, the distortion of the film 9 due to the heat or injection pressure of the opaque resin R2 And damage is prevented. In addition, as said opaque resin R2, PC (polycarbonate), PET (polyethylene terephthalate), PBT (polybutylene terephthalate), PC / ABS alloy (polycarbonate / acrylonitrile butadiene styrene), etc. can be used.

  When the light-transmitting resin R2 is completely solidified and the indicator panel 3 having the concealing portion 7 formed on the back surface side of the base material 5 is molded, the first mold 101 and the third mold 105 are opened. Take out the indicator panel 3.

  Thereafter, the printed circuit board 11 is attached to the front end of the partition wall portion 7b of the concealing portion 7 so that the space portion S is covered from the back side with the component surface thereof facing the space portion S. Thereby, the shift indicator panel unit 1 is completed.

  Therefore, according to the first embodiment, since the base material 5 is not interposed between the concealing part 7 and the film 9, the light that has passed through each opening 7 a of the concealing part 7 does not correspond to the transparent region 9 a that the film 9 does not correspond to. To prevent leakage.

  Moreover, since it is not necessary to form a concave line part like patent document 1 in the base material 5 in order to prevent light leakage, the deterioration of the external appearance of the indicator panel 3 by generation | occurrence | production of a sink can be prevented.

  In addition, since the opaque region 9b of the film 9 and the concealing portion 7 are both colored with a jet pigment, the boundary between the opaque region 9b of the film 9 and the protruding portion 7d of the concealing portion 7 is inconspicuous, A clean design can be expressed.

(Embodiment 2)
FIG. 5 shows a two-color injection molding method for the indicator panel 3 according to Embodiment 2 of the present invention. In the second embodiment, a rib 7e attached to a console (not shown) is integrally projected on the back surface (surface on the side opposite to the base material 5) of the bent portion 7c of the concealing portion 7. A concave portion 105f for forming the rib 7e is formed on the bottom surface of the second recess 105d of the third mold 105, and a direct gate 105e is formed on the bottom side surface of the concave portion 105f.

  Since the other configuration and the molding method of the indicator panel 3 are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  Therefore, according to the second embodiment, since the direct gate 105e of the third mold 105 is formed on the bottom side surface of the concave portion 105f, compared to the case where it is formed on the bottom surface of the second recess 105d, the second cavity C2 is formed. The distance between the direct gate 105e and the film 9 is increased. Therefore, the injection pressure of the opaque resin R2 applied to the film 9 is lowered, and the distortion and damage of the film 9 due to the injection pressure of the opaque resin R2 are prevented.

(Embodiment 3)
FIG. 6 shows a two-color injection molding method for the indicator panel 3 according to Embodiment 3 of the present invention. In the third embodiment, the convex portion 103d protrudes from the bottom surface of the first recess 103b of the second mold 103, that is, the first molding surface 103a around the ejection port 107a of the injection nozzle 107, and when the first cavity C1 is formed. The film 9 is set on the first molding surface 103 a of the second mold 103 so that the convex portion 103 d penetrates the positioning through hole 9 c of the film 9.

  Since the other configuration and the molding method of the indicator panel 3 are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  Therefore, according to the third embodiment, the same effect as in the first embodiment can be obtained.

  In the first to third embodiments, the opaque region 9b is formed in the entire region except the transparent region 9a of the film 9. However, if the transparent region 9a is formed so as to partition, the transparent region 9a is not necessarily formed. It does not have to be formed in the entire region except for.

  In the first to third embodiments, the present invention is applied to an indicator panel that is attached to a console and displays a shift position of a transmission gear stage. The present invention is an indicator that is attached to an instrument panel or a door trim. The present invention can also be applied to an indicator panel that displays the panel, the state of the air conditioner, and the role of various switches provided in the passenger compartment.

  Moreover, in the said Embodiment 1-3, although the decorating layer was comprised with the film 9 closely_contact | adhered to the base material 5, you may comprise with a coating film.

  Moreover, in the said Embodiment 1-3, although the opaque region 9b and the concealing part 7 of the film 9 were both colored with the jet pigment, both were colored with different colors, and the opaque region 9b of the film 9 and It is good also as the design which made the boundary with the concealment part 7 conspicuous.

  In the third embodiment, a direct gate may be provided in the second mold 103 instead of the valve gate 103e, and the translucent resin R1 may be injected from the direct gate.

  In the first to third embodiments, a valve gate may be provided in the third mold 105 in place of the direct gate 105e, and the opaque resin R2 may be injected from the valve gate.

  The present invention has a translucent plate-shaped resin base material and a plurality of openings for allowing light from the light source to pass therethrough, and is formed on the back side of the base material. It is useful as an indicator panel having a concealing part and a two-color injection molding method thereof.

3 Indicator panel 5 Base material 5c Concave part 7 Concealing part 7a Opening part 9 Film (decorative layer)
9a Translucent area 9b Non-translucent area 9c Positioning through hole 11a LED (light source)
101 First mold 103 Second mold 103a First molding surface 103b First recess 103d Convex portion 105 Third mold 105a Second molding surface 105e Direct gate 107 Injection nozzle 107a Outlet C1 First cavity C2 Second cavity R1 Through Photoresin R2 opaque resin

Claims (5)

A plate-shaped resin substrate (5) having translucency and a plurality of openings (7a) for allowing light from the light source (11a) to pass therethrough, formed on the back side of the substrate (5) An opaque panel with a light-impermeable resin concealing part (7),
The back surface of the substrate (5) has a plurality of translucent translucent areas (9a) and an opaque translucent area (9b) that partitions the translucent areas (9a). An indicator panel, wherein a decoration layer (9) is formed, and a light transmission region (9a) of the decoration layer (9) overlaps with an opening (7a) of the concealing portion (7). A two-color injection molding method for molding the indicator panel according to claim 1,
The decorative layer (9) is composed of a film (9) having a positioning through hole (9c),
A first mold (101) for molding the surface side of the base material (5), and a molding surface (103a) for molding the back side of the base material (5), and an injection nozzle (107) is mounted; The jet nozzle (107a) side end of the injection nozzle (107) protrudes from the molding surface (103a) or is convex on the molding surface (103a) around the jet nozzle (107a) of the injection nozzle (107). A second mold (103) having a portion (103d) formed thereon and a third mold (105) for molding the back side of the concealing portion (7),
The film so that the end of the injection nozzle (107) of the second mold (103) on the jet outlet (107a) side or the convex part (103d) penetrates the positioning through hole (9c) of the film (9). (9) is set on the molding surface (103a) of the second mold (103), the first mold (101) and the second mold (103) are clamped, and the first cavity (C1) is interposed therebetween. In this state, the light-transmitting resin (R1) is injected and filled into the first cavity (C1) from the injection nozzle (107), so that the injection nozzle (107) or the convex shape on the back surface thereof is formed. A recess (5c) is formed in the protruding portion of the portion (103d), and the base material (5) in which the film (9) is in close contact with the recess (5c) non-forming region on the back surface thereof is molded
After the first mold (101) and the second mold (103) are opened, the first mold (101) and the third mold (105) are clamped to form the base material (5) and the first mold (105). A second cavity (C2) is formed between the three molds (105), and a translucent resin (R2) is injected and filled from the gate (105e) into the second cavity (C2). 7) A two-color injection molding method of an indicator panel, characterized by molding. The two-color injection molding method for an indicator panel according to claim 2,
On the molding surface (103a) of the second mold (103), a recess (103b) is formed so as to be recessed in the mold opening direction,
A two-color injection molding method for an indicator panel, wherein an end of the injection nozzle (107) on the side of a jet outlet (107a) or a convex portion (103d) protrudes from a bottom surface of the recess (103b). The two-color injection molding method for an indicator panel according to claim 3,
A two-color injection molding method for an indicator panel, wherein the jet nozzle (107a) of the injection nozzle (107) is disposed in the recess (103b). In the two-color injection molding method of the indicator panel according to any one of claims 2 to 4,
The gate (105e) is formed at a location facing the recess (5c) of the base material (5) in a state where the second cavity (C2) is formed on the molding surface (105a) of the third mold (105). A two-color injection molding method for an indicator panel, characterized in that:

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