JP2007080763A - Illuminated push-button switch cover member and method of manufacturing same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover member for an illuminated push-button switch in which leakage of light in the direction of the push-button side at lighting is prevented and the top face part of the push-button has no polarization and the whole top face part is lighted brightly and uniformly, and furthermore interference of lighting with adjoining push-buttons hardly occurs, and which is suitable for key-illumination type improved in visibility and design. <P>SOLUTION: The cover member for the illuminated push-button switch has a translucent push-button part 2 which is provided toward the upper part from a base part 18 and is lighted by emission of a light source and a flexible thin wall part 5 which connects the base part 18 and the translucent push-button part 2, and a movable contact 6 which is separated and contacted to a fixed contact 8 is provided at the bottom part side of the translucent push-button part 2. A concave depression part 19 is provided at a position corresponding to the light source at the bottom face portion of the translucent push-button part 2, and the depression part 19 has an inner wall face and an inner ceiling wall face, and a light shading layer 4 which cuts off the light from the light source is provided at the inner wall face, and the light from the light source is guided to the translucent push-button part 2 through the inner ceiling wall face. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is used in mobile communication devices such as mobile phones and automobile phones, measuring devices, remote controllers, data input devices such as handy terminals, switch devices, and other various input devices in the fields of home appliances, electronics, communications, etc. A cover member for an illuminated pushbutton switch, in particular, from the viewpoint of improved visibility and design, while preventing light leakage in the key side direction, the top surface of the key has no polarization and the entire top surface is uniform. The present invention relates to an illumination-type pushbutton switch cover member that shines brightly and is less likely to cause light interference even when adjacent keys are illuminated with different colors, and a method for manufacturing the same.

  2. Description of the Related Art Conventionally, in an illuminated pushbutton switch used in an input device such as an in-vehicle device, as shown in FIG. 8, for example, a light emitting diode 7 provided on a substrate is pressed by a light guide rubber sheet having a movable contact, While providing a diffusion plate 22 on the side to guide light, a partition wall 20 is provided between adjacent push buttons, and a lower end portion of the partition wall 20 is used as a light-shielding portion, thereby irradiating light between a plurality of switch portions. Was preventing interference. (See Patent Document 1).

  However, this conventional illuminated pushbutton switch is prone to light interference through the light-guiding rubber sheet, but the amount of light reaching the key top is not sufficient, making it difficult to achieve bright key illumination. However, there is a drawback that mass production is poor and manufacturing cost is high.

  Further, in an illuminated pushbutton switch used in a smaller mobile phone or the like, for example, as shown in FIG. 9, a light source is provided on the lower side of a light guide rubber sheet having a movable contact, and the light guide property is A light shielding layer 4 is formed on the surface side of the rubber sheet, and cutout signs such as characters and symbols are formed on the light shielding layer 4 by laser processing, thereby forming a so-called character illuminated rubber switch. (See Patent Document 2).

  However, in this conventional illuminated pushbutton switch, even if the performance as a character illuminated rubber switch is satisfied, the light source appears as a light emitting point when the entire light shielding layer on the top surface of the pushbutton is cut out for key illumination. Therefore, it is not satisfactory in terms of design, and further, it cannot prevent light interference with adjacent push buttons.

  Further, in order to prevent polarization for each color of the multicolor illumination switch, for example, as shown in FIG. 10, a plurality of bare chip LEDs 23 are hemispherically sealed with a transparent sealing resin mixed with a light diffusing agent. It diffused the light and eliminated the polarization at the key top during illumination. (See Patent Document 3).

However, in the invention of Patent Document 3, polarization for each color in one key top can be prevented, but no solution has been made for preventing light interference with adjacent push buttons.
Japanese Patent Laid-Open No. 10-275535 Japanese Utility Model Publication No. 3-10729 Japanese Patent Laid-Open No. 7-320585

  Therefore, the problem to be solved by the present invention is an illumination type pushbutton switch cover member, which prevents light leakage in the direction of the side surface of the pushbutton during illumination, and the top surface portion of the push button has no polarization and the entire top surface portion. It is an object of the present invention to provide an illumination type push button switch cover member suitable for the key illumination type, in which the adjacent push buttons shine uniformly and brightly, light interference between adjacent push buttons hardly occurs, and visibility and design are improved.

  In addition, while maintaining the soft touch and click feel peculiar to pushbuttons made of an elastic material, the pushbutton is prevented from being pushed into the bottom of the casing case due to deformation of the pushbutton, and contact with the light source is maintained. It is an object of the present invention to provide a cover member for an illuminated pushbutton switch that is capable of preventing damage to the device and has excellent durability.

  It is another object of the present invention to provide a manufacturing method that makes it possible to easily produce such an illuminated pushbutton switch cover member at low cost.

  In order to achieve the above-mentioned object, the invention according to claim 1 includes a base portion integrally formed of an elastic material and arranged so as to surround the fixed contact on the circuit board and the light source, and above the base portion. A translucent pushbutton portion projecting from the light source and illuminated by light emitted from the light source, and a flexible thin portion connecting the base portion and the translucent pushbutton portion, and the translucent pushbutton portion is It is movable in a direction substantially perpendicular to the circuit board through the flexible thin part, and is biased in a direction away from the circuit board by the flexible thin part, and the transparent In the light-type pushbutton switch cover member, the bottom surface of the translucent pushbutton unit corresponds to the light source. A recessed portion is provided at the position where the recessed portion is formed on the inner wall surface and the inner ceiling wall. The inner wall surface is provided with a light shielding layer that shields light from the light source, and the light from the light source is guided to the translucent pushbutton part through the inner ceiling wall surface. It features a pushbutton switch cover member.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the illumination type pushbutton switch in which the light shielding layer that shields light from the light source provided on the inner wall surface is a white light reflection layer. Features a cover member.

  In addition to the structure of claim 1, the invention described in claim 3 is a cylindrical light-shielding member formed separately in the light-shielding layer that shields light from the light source provided on the inner wall surface. It is characterized by a cover member for an illuminated pushbutton switch that is disposed in the recessed portion.

  According to a fourth aspect of the invention, in addition to the configuration of the first aspect, a flanged cylindrical light shielding member formed separately in the recessed portion is disposed with the flange portion facing down, and the light shielding Illuminated pushbutton switch cover in which the cylindrical portion of the member constitutes the light shielding layer, at least the flange portion has conductivity, and the flange portion constitutes a movable contact that is separated from and connected to the fixed contact Features a member.

  In addition to the structure of Claim 1 thru | or 4, when the said light source is a diffused light source, the invention of Claim 5 forms the convex surface toward the said inner ceiling wall surface of the said recessed part, An illumination type push button switch cover member configured to condense diffused light from the light source toward a top surface portion of the translucent push button portion is characterized.

  In addition to the structure of Claims 1 to 4, when the light source is a parallel light source, the inner top wall surface of the recessed portion forms a concave surface downward. The illumination-type pushbutton switch cover member is configured to spread parallel light from the light source toward a top surface portion of the translucent pushbutton portion.

  Invention of Claim 7 is a manufacturing method of the cover member for illumination type pushbutton switches of Claim 3 or 4, Comprising: After setting the said light shielding member in a metal mold | die beforehand, it is a liquid type or a millable type Filling the mold with unvulcanized rubber, heat-curing, and simultaneously forming the base portion, the translucent pushbutton portion, and the flexible thin portion connecting them, the light shielding member is placed in the recessed portion. The manufacturing method of the cover member for illumination type pushbutton switches characterized by carrying out insert molding integrally.

  Invention of Claim 8 is a manufacturing method of the cover member for illumination type pushbutton switches of Claim 3 or 4, Comprising: After setting the said light-shielding member in a metal mold | die beforehand, plasticized thermoplasticity The elastomer is filled in the mold, cooled and solidified, and simultaneously with the molding of the base portion, the translucent push button portion, and the flexible thin portion connecting them, the light shielding member is integrated into the recessed portion. The manufacturing method of the cover member for illumination type pushbutton switches characterized by insert molding is characterized.

  According to the cover member for the illuminated pushbutton switch of the first aspect, the recessed portion is provided at a position corresponding to the light source on the bottom surface portion of the translucent pushbutton portion, and the recessed portion has an inner wall surface and an inner ceiling wall surface. The inner wall surface is provided with a light shielding layer that shields light from the light source, and only the light that passes through the inner ceiling wall surface is guided to the translucent pushbutton portion. Since only the light that is shielded by the light shielding layer and enters the translucent pushbutton through the inner ceiling wall surface reaches the top surface of the translucent pushbutton, the light in the side direction of the pushbutton can be used even with a bright diffused light source. Can be provided, so that only the top surface of the push button shines uniformly and brightly, and the illumination interference with the adjacent push button hardly occurs, and the illumination type push button switch cover member with improved visibility and design can be provided.

  According to the cover member for the illuminated pushbutton switch of the second aspect, in addition to the effect of the invention of the first aspect, the light shielding layer provided on the inner wall surface is a white light reflecting layer. Even when a light source that is easy to polarize is used, the light is uniformly diffused by the reflective layer, so that the polarized light disappears, and the push button can be illuminated uniformly and efficiently.

  According to the illumination type pushbutton switch cover member of the third aspect, in addition to the effect of the invention of the first aspect, the light shielding layer has a cylindrical light shielding member formed separately in the recessed portion. Therefore, it is possible to make a light-shielding layer of hard material, and against excessive pressing of the push button, it is possible to prevent submergence to the bottom surface of the casing case due to deformation of the push button and damage to the equipment due to contact with the light source, and durability An illumination type push button switch cover member suitable for the key illumination type can be provided.

  According to the illumination type push button switch cover member of the fourth aspect, in addition to the effect of the invention of the first aspect, a cylindrical light shielding member with a flange formed separately in the recessed portion lowers the flange portion. Since at least the flange portion is electrically conductive, it is possible to prevent the push button from being deformed against excessive pressing of the push button, and to produce a movable contact simultaneously with the production of the light shielding member. It is possible to provide an illumination type push button switch cover member suitable for a key illumination type that is easy to manufacture.

  According to the cover member for the illuminated pushbutton switch of the fifth aspect, in addition to the effect of the invention of the first to fourth aspects, the inner ceiling wall surface of the recessed portion forms a convex surface downward, Illuminated pushbutton switch cover suitable for the key illumination type in which diffused light is condensed toward the top surface of the translucent pushbutton unit, so that there is no polarization on the top surface of the pushbutton and the top surface of the pushbutton is illuminated efficiently and uniformly A member can be provided.

  According to the cover member for the illuminated pushbutton switch of the sixth aspect, in addition to the effect of the invention of the first to fourth aspects, the inner ceiling wall surface of the recessed portion forms a concave surface downward, Since the parallel light is expanded toward the top surface of the translucent push button unit, even if a light source that emits a directional parallel light beam is used, the light source does not appear to emit light at the point, and the top surface of the push button is An illumination type push button switch cover member suitable for the uniformly illuminated key illumination type can be provided.

  According to the manufacturing method of the cover member for an illuminated pushbutton switch according to claim 7 or 8, the durability having the effect according to claim 3 or 4, wherein the pushbutton is prevented from being deformed against excessive pushbutton pressing. It is possible to easily manufacture an illumination type pushbutton switch cover member suitable for a key illumination type.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 shows Embodiment 1 of a cover member for an illuminated pushbutton switch according to the present invention. FIG. 1 is a longitudinal sectional view of an essential part thereof.

  In the illumination type push button switch cover member according to the present invention, the base portion 18 in contact with the circuit board 17 through the thin flexible portion 5 and the translucent push button portion 2 are integrally formed of an elastic material. A movable contact 6 is disposed on the bottom surface portion of the translucent push button portion 2, and when the translucent push button portion 2 is pressed and moved in the direction of the circuit board 17 on which the fixed contact 8 is disposed, the thin flexible portion 5 is buckled, and a click feeling is generated. Immediately thereafter, the movable contact 6 and the fixed contact 8 come into contact with each other, and the fixed contact pattern on the circuit board 17 is electrically closed and conducted.

  Examples of the elastic material used for forming the cover member for the illuminated pushbutton switch include thermosetting rubbers such as silicone rubber, isoprene rubber, butadiene rubber, chloroprene rubber, natural rubber, and polyurethane, polystyrene, polyolefin, Fluorine-based and polyester-based thermoplastic elastomers can be used. Among these, silicone rubber, polystyrene-based thermoplastic elastomer, and polyester-based thermoplastic elastomer are more preferably used because they have good impact resilience and small compression set.

  The hardness of the elastic material is preferably 40 to 80 degrees in terms of durometer type A hardness in order to obtain a suitable click feeling. Although it depends on the design of the thin flexible portion 5, it is more preferably 50 to 70 degrees.

  As a material used for the movable contact 6, in addition to a general metal contact, a material obtained by dispersing a powder of a conductive material that is not easily oxidized in a polyester binder or the like can be applied to form the movable contact 6. . For example, a paste of carbon, gold, silver, copper, etc. can be used. Of these, a paste of conductive carbon black such as acetylene black or ketjen black, which is inexpensive and has little resistance change due to air oxidation or the like, is preferable. Further, a conductive elastic material in which the conductive powder is kneaded in an amount of about 10 to 30% by mass in the same material as the elastic material used for forming the cover member body for the illuminated pushbutton switch may be used. Adhesion reliability is ensured by using the same kind of material as a binder.

  As a material used for the light-shielding layer 4 (light reflecting layer 4), a material in which an inorganic material such as a pigment imparting light-shielding properties or reflective properties is kneaded into an organic material can be used.

  For example, carbon black is used to provide light-shielding properties to the same type of elastic material used for molding, and rutile titanium oxide, anatase-type titanium oxide, zinc sulfide, mica to provide reflective properties in combination with light-shielding properties. In addition, a material in which a white pigment having high concealability such as a pearl pigment is kneaded is used.

  In order to attach the movable contact 6 and the light-shielding layer 4 (light reflection layer 4) as a single unit, a pre-made member can be used as a mold as long as the material is the same material as the elastic material used for molding. What is necessary is just to insert and apply the paste-form material to a metal mold | die, and to integrate by molding. It is possible to adhere to the translucent pushbutton part 2 after molding, or it may be formed by applying as a predetermined ink or paste. When different types of materials are selected as binders, they are bonded and integrated by applying primer treatment, surface treatment, and the like.

  The hardness of the material used for the movable contact 6 can be the same as that of the translucent push button portion 2. When the durometer type A hardness is 40 to 80 degrees, the foreign matter resistance when a foreign matter is bitten between the contacts is good, and the reliability of the electrical connection of the switch can be ensured.

  A generally known light source can be used as the light source, but the light emitting diode 7 is preferably used because of its advantages such as abundant emission wavelengths, low power consumption and low heat generation. In order to utilize the space corresponding to the miniaturization, a light source method may be used in which light from one light source is distributed to each translucent push button unit 2 using the optical fiber 11. Since the light of the optical fiber becomes a parallel light beam having directionality, it is easy to prevent light leakage, and the degree of freedom with respect to the positional relationship with the translucent push button portion 2 is increased.

  In order to prevent light leakage from the side surface of the push button, the light source must be arranged so that most of the light emitted from the light source is emitted into the translucent push button unit 2.

  If the light source has directionality to the irradiation light, it is possible to arrange the light source away from the translucent push button unit 2 as long as the irradiation direction is adjusted. In the case of a diffused light source, the light source must be disposed in the recessed portion 19 (inside the light shielding layer 4) provided on the bottom surface side of the translucent pushbutton portion 2. In this case, the translucent pushbutton portion 2 In order to prevent the light source from coming into contact with the inner wall surface and the inner ceiling wall surface of the recessed portion 19 when pressing, the size of the recessed portion 19 takes into account the size of the light source, the stroke of the push button, and the compression of the push button made of an elastic body. Set the size and depth to allow entry.

  Further, when the light leaks from the side of the translucent push button portion 2 in the direction shown by the arrow a in FIG. There is. In the first embodiment, the inner ceiling wall surface of the recessed portion 19 is the convex surface portion 3 (lens shape) that is a curved surface convex downward, and light passing through the convex surface portion 3 of the inner ceiling wall surface is forcibly transmitted. 2 is directed toward the top surface portion 2 to prevent light leakage from the side surface of the translucent push button portion 2. The curvature of the convex surface portion 3 is that when the translucent pushbutton portion 2 is formed of silicone rubber, the refractive index of silicone rubber is close to that of glass (glass 1.51, silicone rubber 1.4 to 1.5). The curvature of the convex surface portion 3 may be determined in consideration of the height of the translucent push button portion 2 so that the entire push button top surface portion is illuminated with reference to the focal point design of the glass lens.

  FIG. 2 shows Embodiment 2 of the cover member for an illuminated pushbutton switch according to the present invention. FIG. 2 is a longitudinal sectional view of an essential part thereof.

  The second embodiment is an embodiment in which an optical fiber 11 is used instead of the light emitting diode 7 as a light source.

  When an optical fiber is used as a light source, the height can be easily adjusted, and the light is close to a parallel light beam. Therefore, the optical fiber 11 wired from the bottom of the circuit board 17 may be disposed immediately below the translucent pushbutton portion 2. Therefore, the light-transmitting push button portion 2 can be efficiently illuminated by being disposed outside the region surrounded by the light shielding layer 4. On the other hand, care should be taken because if the light is too close to the inner ceiling wall surface, the top surface portion of the translucent pushbutton portion 2 will not shine uniformly and the light source will be visible as dots.

  Therefore, in the second embodiment, the shape of the inner top wall surface of the recessed portion 19 is set to the concave surface portion 12 (light expanding portion) that is concave downward, and parallel light from the optical fiber 11 is applied to the entire top surface of the translucent pushbutton portion 2. The light is expanded. Others are the same as in the first embodiment.

  FIG. 3 shows Embodiment 3 of the cover member for an illuminated pushbutton switch according to the present invention. FIG. 3 is a longitudinal sectional view of an essential part thereof.

The third embodiment is characterized by the light shielding layer 4, and a cylindrical light shielding member 13 is insert-molded in the recessed portion 19 as the light shielding layer 4 (light reflecting layer 4).
The cylindrical light-shielding member 13 is a simple cylindrical member as shown in FIG. The material is not particularly limited as long as it has a light shielding property or a light reflecting property.

  For example, carbon black that gives light-shielding properties to the same type of elastic material used for molding the cover member body for illuminated pushbutton switches, rutile titanium oxide, anatase titanium oxide, zinc sulfide to give reflective properties , Mica, pearl pigments and other white pigments with high concealment and molded into cylinders, polyolefins and polyester thermoplastic resins, or thermosetting resins with the above pigments molded into cylinders Alternatively, a metal cylinder or the like can be used.

  By using a material harder than the elastic material used for molding the cover member body for the illuminated pushbutton switch for the cylindrical light shielding member 13, the compression of the pushbutton portion made of an elastic body is reduced, and the stroke of the pushbutton switch or excessive deformation Can be controlled. That is, while maintaining the click feeling of the push button member, it is possible to locally suppress the compression of the push button part, thereby preventing the push button from getting into the lower surface of the casing case due to excessive switch pressing, and contacting the light source of the push button part. This makes it possible to prevent damage to the equipment.

  When the cylindrical light shielding member 13 made of a hard material is used, the lower end surface of the cylindrical light shielding member 13 is formed above (on the push button side) the lower surface of the movable contact 6 in order to ensure the reliability of the contact. Should be. The lower end surface of the cylindrical light shielding member 13 may be formed on the same surface as the contact surface of the movable contact 6 as long as the material has the same hardness. Others are the same as in the first embodiment.

  FIG. 4 shows Embodiment 4 of the cover member for an illuminated pushbutton switch according to the present invention. FIG. 4 is a longitudinal sectional view of an essential part thereof.

  The fourth embodiment is characterized by the light shielding layer 4 and the movable contact 6, and the flanged cylindrical light shielding member 14 shown in FIG. 6, which serves both as the light shielding layer 4 and the movable contact 6, is insert-molded in the recessed portion 19. . At least the flange portion 16 has conductivity and functions as a movable contact.

  The material of the cylindrical light-shielding member 14 with flange is the same as that of the cylindrical light-shielding member 13, but in the case of a resin material, it is molded with a material blended with conductive carbon black in order to impart conductivity. In the case of a material containing a concealing white pigment, a conductive paste or the like is applied to the fixed contact 8 side of the flange portion 16. Others are the same as in the first embodiment.

It is the principal part longitudinal cross-sectional view which showed the aspect which concerns on Embodiment 1 of the cover member for illumination type pushbutton switches which concerns on this invention. It is the principal part longitudinal cross-sectional view which showed the aspect which concerns on Embodiment 2 of the cover member for illumination type pushbutton switches which concerns on this invention. It is the principal part longitudinal cross-sectional view which showed the aspect which concerns on Embodiment 3 of the cover member for illumination type pushbutton switches which concerns on this invention. It is the principal part longitudinal cross-sectional view which showed the aspect which concerns on Embodiment 4 of the cover member for illumination type pushbutton switches which concerns on this invention. In Embodiment 4, it is a principal part longitudinal cross-sectional view which shows Embodiment which added the translucent key top member 15. FIG. It is a perspective view of the cylindrical light-shielding member 14 with a flange. 3 is a perspective view of a cylindrical light shielding member 13. FIG. It is the principal part longitudinal cross-sectional view which showed the illumination type pushbutton switch using the conventional partition wall 20 and the diffusion plate 22. FIG. It is the principal part longitudinal cross-sectional view which showed the character illumination type pushbutton switch which used the conventional light shielding layer for the pushbutton surface. It is the principal part longitudinal cross-sectional view which showed the illumination type pushbutton switch using the conventional bare chip LED.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminated pushbutton switch cover member 2 Translucent pushbutton part 3 Convex surface part (condensing part)
4 Light shielding layer (light reflecting layer)
5 Thin Flexible Part 6 Movable Contact 7 Light-Emitting Diode 8 Fixed Contact 9 Case (Light-impermeable Case)
10 decoration part (character figure)
11 optical fiber 12 concave surface part (light expansion part)
13 Cylindrical light shielding member 14 Cylindrical light shielding member with flange 15 Translucent key top member 16 Flange part 17 Circuit board 18 Base part 19 Recessed part 20 Light shielding partition wall 22 Diffusion plate 23 Bare chip LED sealed together

Claims (8)

A base part that is integrally formed of an elastic material and is disposed so as to surround a fixed contact on the circuit board and the light source, and a translucent pushbutton that protrudes upward from the base part and is illuminated by light emission of the light source A flexible thin wall portion connecting the base portion and the translucent pushbutton portion,
The translucent push button portion is movable in a direction substantially perpendicular to the circuit board via the flexible thin portion, and in a direction away from the circuit substrate by the flexible thin portion. In the illuminated pushbutton switch cover member that is energized and provided with a movable contact on the bottom surface portion side that is separated from the fixed contact
The bottom part of the translucent push button part is provided with a recessed part at a position corresponding to the light source, the recessed part has an inner wall surface and an inner ceiling wall surface, and the inner wall surface has light from the light source. A cover member for an illuminated pushbutton switch, characterized in that a light-shielding layer is provided for shielding light, and light from the light source is guided to the translucent pushbutton portion through the inner ceiling wall surface. The cover member for an illuminated pushbutton switch according to claim 1, wherein the light shielding layer that shields light from the light source provided on the inner wall surface is a white light reflecting layer. 2. The light shielding layer for shielding light from the light source provided on the inner wall surface is formed by separately forming a cylindrical light shielding member disposed in the recessed portion. The cover member for illuminated pushbutton switches according to 1. A cylindrical light shielding member with a flange, which is separately formed, is disposed in the concave portion with the flange portion facing downward, and the cylindrical portion of the light shielding member constitutes the light shielding layer, and at least the flange portion is electrically conductive. The illuminated pushbutton switch cover member according to claim 1, wherein the cover portion is configured so that the flange portion forms a movable contact that is separated from the fixed contact.   When the light source is a diffused light source, the inner ceiling wall surface of the recessed portion forms a convex surface facing downward, and the diffused light from the light source is condensed toward the ceiling surface portion of the translucent pushbutton portion. The cover member for an illuminated pushbutton switch according to claim 1, wherein the cover member is configured as described above.   When the light source is a parallel light source, the inner ceiling wall surface of the recessed portion forms a concave surface downward, and the parallel light from the light source is expanded toward the top surface portion of the translucent pushbutton portion. The cover member for an illuminated pushbutton switch according to claim 1, wherein the cover member is configured as described above.   5. The method for producing an illuminated pushbutton switch cover member according to claim 3 or 4, wherein the light shielding member is set in the mold in advance, and then a liquid or millable unvulcanized rubber is placed in the mold. The light shielding member is integrally insert-molded into the recessed portion at the same time as the base portion, the translucent pushbutton portion, and the flexible thin-wall portion connecting them are formed. The manufacturing method of the cover member for illumination type pushbutton switches.   5. The method for manufacturing a cover member for an illuminated pushbutton switch according to claim 3 or 4, wherein after the light shielding member is set in the mold in advance, a plasticized thermoplastic elastomer is filled in the mold. The light shielding member is integrally molded in the recessed portion at the same time as the base portion, the translucent push button portion, and the flexible thin portion connecting the base portion, the translucent push button portion and the flexible thin wall portion are molded. Method for manufacturing a cover member for a pushbutton switch.

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