JP2013175333A - Push-switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push-switch in which cost is reduced by reducing the number of components, man-hour for assembly process can be reduced by simplifying assembly work, and a plurality of operation buttons can be illuminated with one light source while surely preventing leakage of light.SOLUTION: In a push-switch, each operation button 2 is formed integrally to close a front end portion of a first slider 22 which is comprised of an opaque and hollow member and is long in an operating direction, with an operation knob 21 including a display screen 23 on a front face thereof. An accommodation part 32 is formed by integrating a plurality of second slider 31 which are comprised of opaque and hollow members and are long in the operating direction, corresponding to each operation button 2 with a switch case 3 in such a manner that the rear end portions thereof are located at a back side of the switch case 3. At rear end sides of the neighboring second sliders 31, 31, reflection planes 34, 35 are provided for branching light emitted from a light source 4 and reflecting the branched light to the corresponding display screen 23, respectively.

Description

  The present invention relates to push-type switches provided on various operation panels, and is particularly suitable for application to push-type switches configured to transmit and illuminate a display surface on the front surface of an operation button from the back side.

  Conventionally, as a push-type switch, for example, a push-type switch for mode switching in an in-vehicle audio control panel is known. This type of push-type switch includes an operation button having a display surface formed on the front surface, and a switch case that stores and holds the operation button slidably along the operation direction. In addition, a light source using an LED (Light Emitting Diode) or the like is disposed on the back side of the switch case, and light emitted from the light source is irradiated on the back side of the display surface on the front of the operation button. Thus, the display surface is transmitted and illuminated from the back side, and the display surface can be visually recognized even in a dark situation such as at night.

  Specifically, such a push-type switch includes an operation knob having an operation button formed with a front display surface, and a slider formed in a cylindrical shape such as a rectangular shape extending rearward from the operation knob. It is formed by assembling and integrating. That is, the operation knob constituting the display surface on the front surface of the operation button is assembled in a state where it is covered with the front surface portion of the slider. In addition, the switch case integrally formed of a material such as resin is formed with a rectangular storage portion corresponding to the slider of the operation button. And it is the structure which accommodates and holds an operation button by making the slider fit in the operation part in the state which can be slid in an operation direction. At this time, the slider is made of a material such as an opaque resin, the operation knob is made of a material such as a transparent resin, and on the surface of the operation knob, for example, a display portion on which characters such as “FM / AM” are displayed. A light-shielding paint or the like is applied to a portion excluding the light to prevent light leakage from the operation knob.

  By the way, in such a push-type switch, since the operation button is constructed by assembling and integrating the slider and the operation knob, the number of parts increases, the parts cost increases, and after assembling the operation button at the time of assembly, Since it takes time to store (insert) the switch case in the storage unit, there has been a concern that the number of assembly steps is large and the assembly work is complicated.

  In addition, the switch case and the operation button are configured separately, and when the operation button is stored and held in the storage part of the switch case, the slider part of the operation button is covered by the storage part. At this time, the switch case storage portion requires a predetermined gap for slidably holding the slider of the operation button. However, since the slider portion of the operation button is covered by the storage portion, the gap Is opened from the back side of the switch case to the operation knob side of the operation button. Therefore, there is a possibility that light that passes through the slider from the light source and is irradiated to the back surface of the operation knob may leak around the operation knob from the gap between the slider and the storage portion. In this case, there has been a concern that the light leaking from the gap between the slider and the storage portion shines around the operation knob, resulting in problems such as lowering the visibility of the display portion.

  Furthermore, since the operation knob is assembled and integrated with a slider disposed on the rear surface (back surface) opposite to the front surface on which the display surface is formed, the slider side on which the rear surface is assembled (that is, the switch case) The shape is open toward the back side of the head. For this reason, a part of the light irradiated from the light source through the slider to the back of the operation knob does not pass (transmit) through the operation knob, but travels along the path along the shape of the operation knob. After the passage, there may be a case where leakage occurs from the end of the operation knob toward the back side, and as a result, there is a possibility that the periphery of the operation knob may be lit.

  In addition, even when the slider is formed using an opaque member, when the slider is formed with a white color or the like that easily reflects light, the light from the light source is easily reflected, and the above-described switch case is accommodated. There was a risk of light leakage in the gap between the two parts.

  In order to solve such a problem, in recent years, an operation button has been extended in a cylindrical shape such as a rectangular shape from the operation knob toward the rear side on the rear side with an operation knob formed with a front display surface. Proposed push-type switch that is formed integrally with the formed slider and that has a storage part for storing and holding the slider of the operation button slidably along the operation direction. (For example, refer to Patent Document 1).

  In this push-type switch, the storage part of the switch case has a rectangular shape or the like corresponding to the shape of the slider of the operation button, and is formed in a state of opening forward from the back side of the switch case. In addition, linear guide convex portions along the operation direction are provided at a plurality of locations on the outer peripheral surface of the slider, and linear guide concave portions corresponding to the guide convex portions are provided on the inner peripheral surface of the storage portion. It is formed at a plurality of locations along the operation direction. As a result, the operation button is slidably stored in the storage portion along the operation direction so that the guide convex portion on the outer peripheral surface of the slider is engaged with the guide concave portion on the inner peripheral surface of the storage portion. Yes.

JP 2007-149611 A

  By the way, such a push-type switch has a structure in which the slider of the operation button is covered by the storage portion when the operation button is stored and held in the storage portion of the switch case. Therefore, with this structure, the gap formed between the storage portion and the slider is still from the switch case rear side to the front side of the operation button (operation knob side), as in the conventional one described above. And opened. For this reason, light that passes through the slider from the light source arranged on the back side of the switch case and irradiates the back side of the operation knob may leak to the front side of the operation button from the gap between the slider and the storage unit. Concerned.

  In order to solve such a problem, in the above-described push-type switch in Patent Document 1, a light-shielding rib projecting forward from the light source in a shape corresponding to the slider of the operation button is provided in the housing portion. The rib is covered by the slider of the operation button. Therefore, since there is no gap between the light source and the operation button to open to the front of the operation button as described above, light leaks around the operation knob on the front side of the operation button from the gap between the slider and the storage portion. This can be prevented beforehand.

  However, in this case, since the light shielding rib projects forward from the light source and is covered by the slider, at least one light source must be provided for each operation button. For this reason, since it is necessary to provide light shielding ribs and light sources corresponding to the number of operation buttons, an increase in the number of parts and the associated part costs are increased, and light shielding ribs and light sources are arranged for each operation button in assembly work. Therefore, there is still an insufficient problem that the number of assembling steps is large and the assembling work becomes complicated.

  Therefore, the present invention has been made in view of the above-described problems, and while reducing the number of parts, it is possible to reduce costs, simplify the assembly work, and reduce the assembly man-hours. An object of the present invention is to provide a push-type switch that can illuminate a plurality of operation buttons with a single light source while reliably preventing light leakage.

In order to solve the above-described problem, the invention according to claim 1 is configured such that a plurality of operation buttons having a display surface formed on the front surface are slidably moved along an operation direction in a storage portion formed in the switch case. The switch case is configured to irradiate the display surface of the operation button from the back side with light emitted from the light source disposed on the back side from the storage portion in the switch case, and transmit the illumination on the display surface. In the push type switch
Each said operation button
A first slider made of an opaque hollow member and elongated in the operation direction;
At least a part of the display surface formed on the front surface is made of a transparent member, and is formed integrally with an operation knob that closes the front end portion of the first slider,
The switch case is
A second slider, which is provided corresponding to each operation button and is made of an opaque hollow member and is long in the operation direction, is integrally formed with a rear end portion located on the back side of the switch case. The storage section;
A reflective surface that is provided on the rear end side of the plurality of adjacent second sliders, branches light emitted from the light source, and reflects the light toward the front end portions of the corresponding second sliders;
And providing
The light source is disposed at a position corresponding to the reflective surface on the back side of the switch case,
Each of the operation buttons is engaged from the front end side of the second slider so that the first slider covers the second slider, and is stored and held in the corresponding storage portion of the switch case. After the light emitted from the reflecting surface is branched at the reflecting surface, the light is reflected toward the front end portion of the corresponding second slider, and the corresponding hollow portion in the second slider and the hollow portion in the first slider. Are sequentially irradiated to the back side of the display surface.

The invention according to claim 2 is the push switch according to claim 1,
The reflective surface is
A first reflecting surface disposed in a direction facing the light source between rear end portions of the plurality of adjacent second sliders and having a predetermined angle with respect to an optical axis of the light source;
An optical axis of light emitted from the light source that is arranged at a rear end portion of the plurality of adjacent second sliders in a direction facing the first reflection surface and branches off at the first reflection surface. A second reflecting surface having a predetermined angle with respect to the second reflecting surface;
With
The light emitted from the light source is branched by the first reflecting surface, reflected to the corresponding second reflecting surface, and then the plurality of second corresponding to the second reflecting surface. Reflecting in the direction of the front end of the slider.

The invention according to claim 3 is the push switch according to claim 1 or 2,
It is provided on the back side of the switch case, and includes a substrate on which the light source and a plurality of switch elements corresponding to the operation buttons are provided.

The invention according to claim 4 is the push switch according to claim 3,
The switch case is
A cover member for closing the opening portion opened toward the back side;
The substrate disposed inside the switch case is fixedly held on the switch case by the cover member.

The invention according to claim 5 is the push switch according to any one of claims 1 to 4,
A guide projection is laid in a straight line along the operation direction on the inner peripheral surface of the first slider that is in sliding contact with the second slider.
A guide recess corresponding to the guide protrusion is laid in a straight line along the operation direction on an outer peripheral surface of the second slider that is in sliding contact with the first slider.

The invention according to claim 6 is the push switch according to any one of claims 1 to 5,
Each of the operation buttons has a display part in which the part of the display surface of the operation knob indicates the operation content of the operation button, and a part other than the display part is shielded by a light-shielding material. Features.

  According to the present invention, the plurality of operation buttons are each composed of a first slider that is long in the operation direction, which is made of an opaque hollow member, and at least a part of the display surface formed on the front surface is made of a transparent member. Since the operation knob that closes the front end of the slider is integrally formed, the number of parts in each operation button can be reduced. In addition, a second slider, which is provided corresponding to a plurality of operation buttons and is long in the operation direction made of an opaque hollow member, is integrated with the switch case in a state where the rear end portion is located on the back side of the switch case. Are provided on the rear end side of the plurality of adjacent second sliders, and the light emitted from the light source is branched and reflected toward the front end portions of the corresponding second sliders. Therefore, the number of parts in the switch case can be reduced. At the same time, by arranging the light source at a position corresponding to the reflecting surface on the back side of the switch case, the number of components in the light source can be reduced because it is not necessary to provide a light source according to the number of operation buttons. As described above, the cost can be reduced by reducing the number of parts in each component, and the number of parts can be reduced, so that the number of parts can be reduced, so that the number of assembly steps can be reduced.

  Further, each operation button is engaged from the front end side of the second slider so that the first slider covers the second slider, and is stored and held in the corresponding storage portion of the switch case, and emitted from the light source. After the light is branched at the reflection surface, the light is reflected toward the front end portion of the corresponding second slider, and sequentially passes through the hollow portion in the corresponding second slider and the hollow portion in the first slider so that the back surface of the display surface In order to irradiate to the side, a plurality of operation buttons can be illuminated with one light source. At this time, since it is possible to eliminate the conventional gap that opens to the front side of the operation button that caused the light leakage between each operation button and the storage portion, the light emitted from the light source, Light leakage when irradiating the back side of the display surface can be reliably prevented.

  Thus, the cost can be reduced by reducing the number of parts, and the number of assembling steps can be reduced by simplifying the assembling work, and a plurality of light sources can be reliably prevented with a single light source. It is possible to provide a push-type switch that can illuminate the operation button.

It is a schematic front view of the push type switch in one embodiment of the present invention. It is a schematic sectional drawing which shows the AA line cross section in the push type switch of FIG. It is an expansion perspective view which shows an operation button roughly, seeing from the back side. FIG. 5 is an enlarged perspective view schematically showing a second slider of the switch case when viewed from the front. It is a schematic sectional drawing which shows the BB line cross section in the push-type switch of FIG.

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

  1 is a schematic front view of a push-type switch 1 according to the present invention, FIG. 2 is a schematic cross-sectional view showing a cross-section taken along line AA in the push-type switch 1 of FIG. 1, and FIG. 4 is an enlarged perspective view schematically showing 2 from the back side, FIG. 4 is an enlarged perspective view schematically showing the second slider 31 of the switch case 3 as seen from the front, and FIG. It is a schematic sectional drawing which shows the BB line cross section in the push type switch 1 of. 2 and 5, the left side of the drawing shows the front side of the push switch 1, and the right side of the drawing shows the back side. Further, the operation direction used in this specification means a direction connecting the front side and the back side of the push switch 1. Further, the present invention is characterized by the structure of the push-type switch 1, and the function as a switch applies a wide variety of existing switches, and therefore a specific description thereof will be omitted.

  As shown in FIGS. 1 and 2, the push switch 1 according to the present embodiment is provided in, for example, an in-vehicle audio control panel, and roughly divided, the operation button 2 and the operation button 2 are arranged. A switch case 3 is provided, and a substrate 5 on which a light source 4 using an LED (Light Emitting Diode) or the like is mounted on the back side of the switch case 3 is configured. A switch element 6 such as a tact switch operated by the operation button 2 is mounted on the substrate 5 (see FIG. 5 described later).

  Specifically, the operation button 2 has a display surface 23 formed on an operation knob 21 disposed on the front surface, and at least a part of the display surface 23 is formed of a transparent resin material or the like. And the said part has comprised the display part 24 which shows the operation content of the operation button 2 which consists of characters, such as "FM / AM" and "DISC", for example. In the case of this embodiment, the operation knob 21 is formed of a transparent resin material, and the portion of the display surface 23 excluding the display portion 24 is shielded from light by a material having a light shielding property. Specifically, a light-shielding paint is applied to a portion other than the display unit 24 to prevent light leakage on the display surface 23 of the operation knob 21 excluding the display unit 24.

  The operation button 2 includes a first slider 22 that is long in the operation direction and is made of a hollow member made of an opaque resin (in the present embodiment, a black resin). And the operation button 2 is formed by providing the said 1st slider 22 integrally in the state extended in the back side of the operation knob 21. As shown in FIG. In other words, the operation button 2 is configured by integrating the first slider 22 and the operation knob 21 that closes the front end portion of the first slider 22.

  The switch case 3 is provided corresponding to the operation button 2 (two in the vertical direction orthogonal to the operation direction in the case of this embodiment), and is made of opaque resin (in the case of this embodiment, made of white resin). And a storage portion 32 formed integrally with the second slider 31 made of a hollow member such as a long member in the operation direction, with the rear end portion of the second slider 31 positioned on the back side of the switch case 3. I have. That is, the switch case 3 forms the storage portion 32 by integrally providing the second slider 31. Further, a partition portion 33 that partitions the storage portion 32 is provided integrally with the switch case 3 between the adjacent second sliders 31 and 31. The switch case 3 is engaged so that the second slider 31 is covered by the first slider 22 of the operation button 2 so that the operation button 2 can be slid in the operation direction in the storage portion 32. It is designed to be stored and held.

  Further, the switch case 3 is arranged between the rear end portions of a plurality of adjacent second sliders 31, 31 (in this embodiment, two) in a direction facing the light source 4. A first reflecting surface 34 is provided at a predetermined angle with respect to the optical axis. Further, the light emitted from the light source 4 that is arranged at the rear end of the plurality of adjacent second sliders 31, 31 in the direction facing the first reflecting surface 34 and is branched by the first reflecting surface 34. A second reflecting surface 35 is provided at a predetermined angle with respect to the optical axis. In other words, in the case of this embodiment, the second slider 31 has a rear side opposite to the rear end portion (the rear end portion side adjacent to the other second slider 31) where the first reflecting surface 34 is formed. The second reflection surface 35 is formed by extending the end portion in the switch case 3 in a state where the end portion is inclined in a direction facing the first reflection surface 34. Further, in the substrate 5 disposed on the back side of the switch case 3, the light source 4 is disposed at a position corresponding to the first reflecting surface 34 of the second slider 31, and the light emitted from the light source 4 is After branching at the first reflecting surface 34 and reflecting it to the corresponding second reflecting surface 35, it is reflected toward the front end portion of the plurality of second sliders 31, 31 corresponding to the second reflecting surface 35. It is supposed to let you. Incidentally, the first and second reflecting surfaces 34 and 35 form portions corresponding to the first and second reflecting surfaces 34 and 35 in the mold when the second slider 31 is die-molded to be substantially flat. Accordingly, the corresponding portion of the second slider 31 after molding is formed substantially flat (that is, formed with a flat surface such as a mirror surface), so that it can be easily formed.

  Further, as shown in FIGS. 3 and 5, at a predetermined position on the back side of the operation button 2, that is, a position corresponding to the switch element 6 mounted on the substrate 5 disposed on the back side of the switch case 3, A pressing portion 25 that protrudes toward the back side of the switch case 3 is provided. In addition, the operation direction (FIG. 2 and FIG. 2) is applied to the inner peripheral surface 22a of the first slider 22 (in other words, the inner peripheral surface 22a slidably in contact with the second slider 31 of the first slider 22) in the hollow state of the operation button 2. The linear guide convex part 26 along the left-right direction in FIG. 5 is laid in the state which protruded toward the inner peripheral side.

  Further, as shown in FIG. 4, the outer peripheral surface 31 a of the second slider 31 that is in a hollow state in the storage portion 32 of the switch case 3 slidably contacts the first slider 22, along the operation direction corresponding to the guide convex portion 26. A guide recess 36 comprising a straight groove is laid. Accordingly, by engaging the guide convex portion 26 of the first slider 22 and the guide concave portion 36 of the storage portion 32, the storage portion is guided while guiding the operation button 2 along the operation direction. It can be accommodated and held in the slide 32.

  Furthermore, in the push-type switch 1 of the present embodiment, as shown in FIGS. 2 and 5, the switch case 3 includes a cover member 37 that closes an opening portion that opens toward the back side. In other words, the switch case 3 is closed by the cover member 37 at the opening portion that opens toward the back side. At this time, the substrate 5 disposed inside the switch case 3 (that is, in the opening portion) is fixedly held in the switch case 3 by the cover member 37. For this reason, the board 5 can be fixedly held in the switch case 3 without providing a new component for fixing and holding the board 5. As a result, the number of parts can be further reduced.

  In the push-type switch 1 having such a configuration, the operation button 2 has an inner peripheral surface 22a of the first slider 22 positioned inside the operation knob 21 as shown in FIG. 2 (FIG. 5). The guide protrusion 26 formed on the inner peripheral surface 22a of the first slider 22 is slid with the first slider 22 in the second slider 31 by being fitted to the outer peripheral surface 31a from the front side. The operation button 2 is slidably stored and held in the storage portion 32 by engaging with the guide recess 36 formed on the outer peripheral surface 31a that forms the moving surface.

  Here, an engagement protrusion (not shown) protruding toward the outer periphery is provided on the outer peripheral surface of the operation knob 21, and the engagement protrusion is provided at a portion corresponding to the operation knob 21 in the storage portion 32 of the switch case 3. An engaging claw (not shown) that engages with the portion may be provided. The operation button 2 can be slid by a predetermined amount in the operation direction (front-rear direction of the switch case 3) along the guide recess 36 by engaging the engagement protrusion over the engagement claw. At the same time, the engaging protrusion is locked by the engaging claw, so that the switch case 3 is prevented from falling off. The operation button 2 is always urged forward by an urging means (not shown) such as a spring, and the operation knob 21 is exposed in the vehicle compartment in a state of protruding forward from the switch case 3. Yes.

  Therefore, when the user (in this case, an occupant of the vehicle equipped with the push switch 1) presses the operation knob 21 of the operation button 2, the operation button 2 resists the urging force of the urging means (not shown). Then, the switch case 3 is slid (slid) to the back side of the switch case 3 and the switch element 6 is operated by the pressing portion 25 of the operation button 2 to switch between FM broadcast and AM broadcast, for example. When the headlight of the vehicle is turned on at night or the like, the light source 4 is energized and emits light in conjunction with the lighting operation.

  At this time, the light emitted from the light source 4 is reflected in a predetermined direction by the first reflecting surface 34 and the second reflecting surface 35 of the second slider 31 as indicated by arrows in FIG. 2 sequentially passes through the slider 31 and the first slider 22 and is irradiated to the back side of the display surface 23. And the light irradiated to the back side of the display surface 23 changes characters (display unit 24) such as “FM / AM” and “DISC” displayed on the front display surface 23 of the operation knob 21 of the operation button 2. Since the light is transmitted, the display unit 24 is illuminated. Accordingly, the user can visually recognize the display unit 24 such as “FM / AM” and “DISC” displayed on the display surface 23 of the operation knob 21 even in a dark vehicle interior such as at night, and the operation button can be used as necessary. It is possible to easily switch between FM broadcast and AM broadcast by pressing the second operation knob 21.

  Further, since the operation button 2 is engaged so that the first slider 22 covers the second slider 31 and is stored and held in the storage portion 32 of the switch case 3, light leakage occurs between the operation button 2 and the storage portion 32. It is possible to eliminate a conventional gap (not shown) that opens to the front side of the operation button 2 that has caused the above. Accordingly, it is possible to reliably prevent light leakage when irradiating the light emitted from the light source 4 to the back side of the display surface 23.

  As described above, in the push-type switch 1 of the present embodiment described above, the plurality of operation buttons 2 and 2 each include the first slider 22 that is long in the operation direction, which is made of an opaque hollow member, and the display surface 23 formed on the front surface. At least a portion (display portion 24) is made of a transparent member and is integrally formed with the operation knob 21 that closes the front end portion of the first slider 22, so that the number of parts in these operation buttons 2 and 2 is reduced. Can be reduced. The switch case 3 is provided corresponding to the plurality of operation buttons 2, 2, and the second slider 31 that is long in the operation direction is formed of an opaque hollow member, and the rear end portion is on the back side of the switch case 3 And a storage portion 32 formed integrally with each other and a rear end portion side of a plurality of adjacent second sliders 31, 31. The light emitted from the light source 4 is branched to correspond to each other. Since the reflection surfaces (the first reflection surface 34 and the second reflection surface 35) that reflect toward the front end portion of the plurality of second sliders 31 and 31 are provided, the number of parts in the switch case 3 is reduced. be able to. At the same time, the light source 4 is disposed at a position corresponding to the reflective surface (first reflective surface 34) on the back side of the switch case 3, so that it is not necessary to provide the light source 4 according to the number of operation buttons 2. 4 can reduce the number of parts. In this way, the cost can be reduced by reducing the number of parts in each of the component parts 2, 3, and 4, and the number of parts can be reduced, so that the assembly work is facilitated to reduce the number of assembly steps. be able to.

The operation buttons 2 and 2 are engaged from the front end side of the second slider 31 so that the first slider 22 covers the second slider 31, and are stored and held in the corresponding storage portions 32 of the switch case 3. In this state, the light emitted from the light source 4 is branched by the reflecting surfaces (the first reflecting surface 34 and the second reflecting surface 35), and then reflected toward the front end portion of the corresponding second slider 31, respectively. A plurality of operation buttons 2 and 2 can be illuminated by a single light source 4 because the inside of the second slider 31 and the first slider 22 in the hollow state are sequentially passed through and irradiated on the back side of the display surface 23. At this time, it is possible to eliminate a conventional gap (not shown) that opens to the front side of the operation button 2 that causes light leakage between the operation buttons 2 and 2 and the storage portions 32 and 32. Therefore, light leakage when irradiating the light emitted from the light source 4 to the back side of the display surface 23 can be reliably prevented. Thereby, it is possible to avoid the occurrence of light leakage around the operation knob 21, and the display unit 24 (for example, “FM / AM” or “DISC”) on the display surface 23 of the operation knob 21 due to the light leakage. Therefore, the visibility of the display unit 24 in the operation knob 21 (operation button 2) can be improved.

  Thus, the cost can be reduced by reducing the number of parts, and the number of assembling steps can be reduced by simplifying the assembling work, and a plurality of light sources 4 can be used while reliably preventing light leakage. It is possible to provide the push switch 1 that can illuminate the operation buttons 2 and 2.

  Further, according to the push type switch 1, the push type switch 1 is disposed between the rear end portions of the plurality of adjacent second sliders 31, 31 in a direction facing the light source 4, and has a predetermined angle with respect to the optical axis of the light source 4. The first reflecting surface 34 and the rear ends of the plurality of adjacent second sliders 31, 31 are arranged in a direction facing the first reflecting surface 34, and are branched at the first reflecting surface 34. A second reflection surface 35 that forms a predetermined angle with respect to the optical axis of the light emitted from the light source 4, and the light emitted from the light source 4 is branched by the first reflection surface 34. After reflecting on the corresponding second reflecting surface 35, the plurality of operation buttons 2 are reflected by the single light source 4 in order to reflect the second reflecting surface 35 toward the front end portion of the corresponding second sliders 31, 31. , 2 can be illuminated.

  Further, according to the push-type switch 1, it is disposed on the back side of the switch case 3 and corresponds to the light source 4 such as an LED and the plurality of operation buttons 2 and 2 (that is, pressed by the pressing portion 25 of the operation button 2). A plurality of switch elements 6, 6 such as tact switches (in other words, the substrate 5 on which the light source 4 and the switch elements 6, 6 are mounted). By mounting 6 and 6 on one substrate 5, the number of components can be reduced.

  In addition, according to the push-type switch 1, the switch case 3 includes the cover member 37 that closes the opening portion that opens toward the back side (in other words, the switch case 3 opens toward the back side of the switch case 3). The opening portion is closed by the cover member 37), and the substrate 5 disposed inside (inside the opening portion) of the switch case 3 is fixedly held by the cover member 37 to the switch case 3. Since 5 can be fixedly held in the switch case 3, the number of parts can be further reduced.

  Further, according to the push-type switch 1, the inner peripheral surface 22a of the first slider 22 that is in sliding contact with the second slider 31 is linearly guided along the operation direction (the left-right direction in the plane of FIG. 2 and FIG. 5). The outer peripheral surface 31a that is laid in a state where the convex portion 26 protrudes toward the inner peripheral side and is in sliding contact with the first slider 22 of the second slider 31 corresponds to the guide convex portion 26 linearly along the operation direction. Since the guide recess 36 made of a rectangular groove is laid, the guide protrusion 26 of the first slider 22 and the guide recess 36 of the storage portion 32 are engaged, so that the operation button 2 is moved along the operation direction. It is possible to slidably store and hold the storage portion 32 while guiding (guiding).

  Further, according to the push-type switch 1, each of the operation buttons 2 and 2 has a display unit 24 in which a part of the display surface 23 of the operation knob 21 indicates the operation content by the operation button 2. The portion to be removed is shielded with a light-shielding material (in this embodiment, a light-shielding paint or the like is applied), thereby further preventing light leakage on the display surface 23 of the operation knob 21 excluding the display unit 24. It can be further ensured.

  It should be noted that the present invention should not be construed as being limited to the above-described embodiment, and of course can be changed or improved as appropriate.

  For example, in the above-described embodiment, the embodiment in which the present invention is applied particularly to the push-type switch 1 provided in the in-vehicle audio control panel has been described. However, the present invention is not limited thereto. The present invention can be widely applied to various push switches provided on various operation panels and the like as well as on-vehicle.

DESCRIPTION OF SYMBOLS 1 Push type switch 2 Operation button 21 Operation knob 22 1st slider 23 Display surface 24 Display part (a part of display surface)
25 Pressing portion 26 Guide convex portion 3 Switch case 31 Second slider 32 Storage portion 33 Partition portion 34 First reflecting surface (reflecting surface)
35 Second reflective surface (reflective surface)
36 Guide recess 37 Cover member 4 Light source 5 Substrate 6 Switch element

Claims (6)

A plurality of operation buttons having a display surface formed on the front surface are slidably stored along the operation direction in a storage portion formed in the switch case, and are disposed on the back side of the storage portion in the switch case. In the push-type switch configured to irradiate the light emitted from the light source from the back side to the display surface of the operation button and transmit and illuminate the display surface.
Each said operation button
A first slider made of an opaque hollow member and elongated in the operation direction;
At least a part of the display surface formed on the front surface is made of a transparent member, and is formed integrally with an operation knob that closes the front end portion of the first slider,
The switch case is
A second slider, which is provided corresponding to each operation button and is made of an opaque hollow member and is long in the operation direction, is integrally formed with a rear end portion located on the back side of the switch case. The storage section;
A reflective surface that is provided on the rear end side of the plurality of adjacent second sliders, branches light emitted from the light source, and reflects the light toward the front end portions of the corresponding second sliders;
And providing
The light source is disposed at a position corresponding to the reflective surface on the back side of the switch case,
Each of the operation buttons is engaged from the front end side of the second slider so that the first slider covers the second slider, and is stored and held in the corresponding storage portion of the switch case. After the light emitted from the reflecting surface is branched at the reflecting surface, the light is reflected toward the front end portion of the corresponding second slider, and the corresponding hollow portion in the second slider and the hollow portion in the first slider. A push-type switch characterized by sequentially passing through and irradiating the back side of the display surface. The reflective surface is
A first reflecting surface disposed in a direction facing the light source between rear end portions of the plurality of adjacent second sliders and having a predetermined angle with respect to an optical axis of the light source;
An optical axis of light emitted from the light source that is arranged at a rear end portion of the plurality of adjacent second sliders in a direction facing the first reflection surface and branches off at the first reflection surface. A second reflecting surface having a predetermined angle with respect to the second reflecting surface;
With
The light emitted from the light source is branched by the first reflecting surface, reflected to the corresponding second reflecting surface, and then the plurality of second corresponding to the second reflecting surface. The push-type switch according to claim 1, wherein the push-type switch is reflected toward the front end portion of the slider. 3. The push-type switch according to claim 1, further comprising a substrate disposed on a back side of the switch case and provided with the light source and a plurality of switch elements corresponding to the operation buttons. . The switch case is
A cover member for closing the opening portion opened toward the back side;
The push-type switch according to claim 3, wherein the substrate disposed inside the switch case is fixedly held on the switch case by the cover member. A guide projection is laid in a straight line along the operation direction on the inner peripheral surface of the first slider that is in sliding contact with the second slider.
The guide concave portion corresponding to the guide convex portion is laid in a straight line along the operation direction on an outer peripheral surface of the second slider that is in sliding contact with the first slider. The push-type switch as described in any one. Each of the operation buttons includes a display portion in which the part of the display surface of the operation knob indicates the operation content of the operation button, and a portion other than the display portion is shielded by a light-shielding material. The push-type switch according to any one of claims 1 to 5, wherein the push-type switch is provided.

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