JP2019002886A - Pointer for meter and indicating instrument therewith - Google Patents

Abstract

To provide a pointer for a meter that design sense of unity of a pointer body and a cap is high, can obtain clear light emitting line, the design is stylish and is good looking.SOLUTION: A light emitting part (82) is formed only on a surface of a pointer body (61). An extension piece (69) extending from a surface part (67) of a base (65) for a rear is provided to the pointer body. In the pointer body, an indication part is inserted to a side opening formed on a peripheral wall part of a cap (95) in a slit, the surface of the base is stuck out to the face side than the surface of the cap through a surface opening formed on the surface part of the cap in the slit, and a reflection face part (75) is encased in the cap. The extension piece forms the surface of the tail part (33) of the pointer (11) by arranging the extension piece at rear of the surface opening of the slit and outside of the cap.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a pointer for an instrument mounted on various vehicles such as a vehicle, a ship, and an aircraft, and an indicating instrument including the same.

  Conventionally, in an indicator instrument mounted on a vehicle or the like, a scale, etc. is illuminated by illuminating a display panel provided with scales, numbers, and letters from the back side in order to improve the recognition of the indicated position at night or in the dark. In general, the pointer itself for instructing the scale and the like is also caused to emit light. As an indicator for this type of instrument, it has a circular rotation base in front view as the center of rotation, an indicator that extends from the rotation base toward the tip, and a tail that protrudes from the rotation base to the opposite side of the indicator. There are known guidelines (see, for example, Patent Document 1).

  Such a pointer for an instrument includes a pointer main body made of a transparent resin material, a pedestal member disposed below the base constituting the rotation base of the pointer main body, a cap mounted on the upper base of the pointer main body, It consists of a balance weight that balances. The pointer main body constitutes an instruction portion at a portion extending from the base portion toward the tip, and the indication portion and the surface side of the base portion are light emitting surfaces. The light emitting surface of the base portion of the pointer main body faces the outside through a slit formed on the surface of the cap main body. Further, a weight accommodating portion for accommodating a balance weight is provided on the rear side of the cap. The weight accommodating portion protrudes rearward from the circular cap body in front view of the cap, and constitutes a tail portion of the pointer.

JP 2014-215216 A

  In the above-mentioned conventional pointer, since the light emitting surface on the surface side of the base portion is arranged inside the slit on the cap surface, when the light emitting surface is not emitting light, it appears to be depressed at a position one step down inside the slit. And it does n’t look good. If the light emitting surface on the front side of the base is designed to protrude from the slit to the front side of the cap, not only the surface of the indicating unit but also the side surface is the light emitting surface. As a result of exposure and illuminating the side, the outline of the light emitting part is blurred, and a clear light emitting line cannot be obtained.

  Further, in the above-described conventional pointer, the weight accommodation portion (tail portion) is conspicuously present on the rear side of the cap, so that the sense of unity between the pointer main body and the cap is impaired. Therefore, it is conceivable to increase the sense of unity between the pointer body and the cap by providing the pointer body with an extension piece extending from the base to the back of the pointer and forming the surface side of the tail portion with the extension piece. In order to prevent light leakage, the extension piece needs to be surrounded by a cap in the same manner as the base portion, and since the width of the tail portion is increased accordingly, it is difficult to realize a smart design guideline.

  Also, since the pointer main body is usually formed wider than the light emitting portion so that the back side portion of the base can take in more light, it cannot be assembled through the slit from the upper side of the cap. Attached from above. However, according to the assembly structure of the cap to such a pointer, when the cap is composed of one piece, a hollow projecting portion (weight receiving portion) for allowing the cap to pass from the back side to the front side without enclosing the extension piece. The portion at the tail portion is thickened by that amount, and the front end face of the protruding portion can be seen as it is in the front view, so that the appearance is not good.

  The technology of the present disclosure has been made in view of such a point, and the purpose thereof is high in design unity between the pointer main body and the cap, and a clear light emission line can be obtained. The goal is to achieve a good-looking instrument guide with a smart design.

  In order to achieve the above object, in the technology of the present disclosure, the light emitting portion is formed only on the surface of the pointer main body, an extension piece extending rearward from the surface portion of the base portion is provided on the pointer main body, The surface of the base is projected to the front side of the surface of the cap through the surface opening formed in the surface portion of the cap of the slit, and the reflective surface portion is accommodated in the cap, while the extension piece is behind the surface opening of the slit. The surface of the tail part of the pointer is constituted by the extension piece arranged on the outside of the cap.

  Specifically, the technology of the present disclosure includes a pointer main body that indicates an index provided on the display panel, and a cap that is attached to a base that is a rotation center of the pointer main body, and includes a base and a cap of the pointer main body. It has a rotating base, an indicator that extends from the base toward the tip of the pointer body, and a tail that extends backward from the rotating base, and reflects the light received on the back of the base to the tip of the pointer body An indicator needle provided with a light emitting portion that emits light to the outside at least at a base portion and an indication portion of the pointer main body, and an indication instrument provided with the same.

  A slit connected to the back surface opening formed on the back side of the cap is formed at a location from the surface portion of the cap to the front side of the peripheral wall portion. The light emitting part is formed only on the surface of the pointer main body. The pointer main body includes an extension piece extending from the surface portion of the base portion toward a rear portion corresponding to the reflection surface portion. The indicating portion of the pointer main body is inserted through a side opening formed in the peripheral wall portion of the cap in the slit. The surface of the base portion of the pointer main body protrudes to the front side from the surface of the cap through a surface opening formed in the surface portion of the cap among the slits.

  The reflecting surface portion of the pointer main body is formed wider than the width of the surface opening of the slit and is accommodated in the cap, while the extension piece is disposed outside the cap behind the surface opening of the slit. When the cap is attached to the pointer main body, the pointer main body and the cap are lowered with the tip in a state where the extension piece is inserted through the surface opening of the slit and protrudes to the front side and the reflecting surface portion is located in the cap. From the tilted posture, the pointing portion moves to the front side with the base as the center, and the extension piece rotates in the rearward direction to move to the back side, so that a predetermined assembly posture can be obtained.

  According to this configuration, since the surface of the base portion of the pointer main body protrudes to the front side from the surface of the cap through the surface opening formed in the surface portion of the cap among the slits, the surface of the base portion of the pointer main body is provided. When the emitted light emitting part is not emitting light, it looks physically protruding, and the appearance of the pointer can be improved compared to the case where it appears depressed. And, because the light emitting part is formed only on the surface of the pointer body, light leakage does not occur from the side surface of the pointer body and from the side surface of the base portion protruding from the surface opening of the slit, The outline of the light emitting part can be made clear, and a clear light emitting line can be obtained.

  Further, an extension piece is provided that extends rearward from the surface portion of the base portion to the reflecting surface portion with respect to the pointer main body, and the extension piece is disposed outside the cap behind the surface opening of the slit. Since the surface of the tail portion of the pointer is configured, it is possible to enhance the sense of design unity between the pointer main body and the cap. Furthermore, the cap is attached to the pointer main body in a predetermined assembly posture by rotating the pointer main body backward from the tilted posture with the extension piece inserted into the surface opening of the slit of the cap. Even when the weight receiving portion constituting the tail portion and the protruding portion corresponding thereto are provided together with the extension piece, a part or the whole of the front end surface of the protruding portion can be concealed by the extension piece, thereby I can improve the appearance.

  In the instrument pointer as described above, a weight accommodating portion having an insertion port protruding rearward and opening on the front side is provided on the rear portion of the outer peripheral surface of the cap. A balance weight for adjusting the position of the center of gravity may be accommodated. In this case, it is preferable that the extension piece of the pointer main body covers the inlet of the weight accommodating portion and conceals the balance weight.

  According to this configuration, since the balance weight is accommodated by being inserted into the weight accommodating portion from the front side inlet, the balance weight can be easily accommodated in the weight accommodating portion, and the assembly of the pointer is facilitated. be able to. And since the insertion port of the weight accommodating part is covered with the extension piece of the pointer main body, it is not necessary to provide a part for covering the inlet of the weight accommodating part separately from the pointer main body.

  The reflecting surface portion of the pointer main body and the balance weight preferably overlap each other in the direction along the rotational axis of the pointer main body.

  According to this configuration, even if the indicating portion of the pointer is formed relatively long, the tail portion can be shortened by the amount that the balance weight overlaps the reflecting surface portion of the pointer main body, and the tail portion is smaller than the indicating portion. A balanced guideline that is not too long can be realized.

  A reinforcing rib that transmits light to the rear side of the extension piece is provided between the reflecting surface portion and the extension piece in the pointer main body, and the light emitting portion of the pointer main body is located at a portion of the extension piece corresponding to the reinforcement rib. Is also preferably formed.

  According to this configuration, the needle-shaped light guide is provided with the reinforcing rib positioned between the reflecting surface portion and the extension piece, and light is transmitted to the rear side of the extension piece through the reinforcement rib. A portion corresponding to the reflective surface portion can also emit light, and a long light emission line extending to the extension piece can be formed.

  The pointer main body guides light reflected by the reflective surface portion toward the tip by a transparent needle-shaped light guide body having a reflective surface portion and a coating film covering the outer periphery of the needle-shaped light guide body. It may be configured to. In this case, the surface portion of the coating film is formed with a light emitting hole for emitting the light guided through the needle-shaped light guide to the outside, and the portion of the pointer body where the light emitting hole is formed is the light emitting portion. It is preferable to constitute.

  According to this configuration, the pointer main body in which the light emitting portion is formed only on the surface can be specifically realized, and the pointer can be reduced in size, diameter, and weight.

  The instrument pointer may further include a pedestal member that partially closes the back opening of the cap and supports the cap and the pointer main body. In this case, the base member and the cap constitute a holder that holds the base portion of the pointer main body and is rotatably supported on the display panel. Positioning pieces projecting inward from the cap are respectively provided at both edge portions of the side opening of the slit of the cap, and the positioning piece is provided between the pointing portion of the pointer main body and the pedestal member. It is preferable that a restricting structure portion that restricts the gap between the positioning pieces from being widened is provided.

  According to this configuration, since the restriction structure portion that restricts the space between the positioning pieces provided at both edge portions of the side opening of the cap is provided with respect to the base member, the pointer main body and the holder are assembled. After that, the slit can be prevented from spreading by the restricting structure portion, and a solid configuration can be realized as a guide.

  Further, the indicating instrument according to the technique of the present disclosure includes the above-described instrument pointer, a display panel provided with an index, a light source that emits light for causing the pointer main body to emit light, and the instrument pointer on the surface of the display panel. And a drive device that is driven to rotate.

  According to this configuration, the above-described instrument pointer has a high design sense of unity between the pointer main body and the cap, and a clear light emission line can be obtained. Because it has the characteristics, the halation that occurs when the light leaking from the pointer illuminates the display panel and the spot that shines in the shape of a dot at the tip of the pointer do not occur. However, a good indicating instrument can be realized.

  According to the instrument guideline having the above-described configuration, it is possible to realize a good-looking guideline with a smart design that has a high design sense of unity between the pointer body and the cap and can provide a clear light emission line. And, according to the indicating instrument equipped with this pointer, the phenomenon of halation caused by the light leaking from the pointer illuminating the display panel or the spot shining in a point shape at the tip of the pointer does not occur, and the emission luminance of the pointer is high. Thus, it is possible to realize an indicating instrument with good indication position visibility.

It is a front view which shows the indicator instrument for vehicles which concerns on embodiment. It is sectional drawing of the indicating instrument in the II-II line | wire of FIG. It is a perspective view of the pointer for instruments which concerns on embodiment. It is sectional drawing of the pointer for instruments in the IV-IV line of FIG. It is a disassembled perspective view of the pointer for instruments which concerns on embodiment. It is a bottom view of the state which removed the base member of the pointer for instruments which concerns on embodiment. It is a front view which shows the base member of the pointer for instruments which concerns on embodiment. It is process drawing which shows a mode that a balance weight is inserted in a cap in the assembly operation | work of the pointer for instruments which concerns on embodiment. It is process drawing which shows a mode at the time of assembling | attaching a pointer main body to a cap in the assembly operation | work of the pointer for instruments which concerns on embodiment. It is process drawing which shows a mode at the time of assembling | attaching a pointer main body to a cap in the assembly operation | work of the pointer for instruments which concerns on embodiment. It is process drawing which shows a mode at the time of attaching a base member to the cap with which the pointer main body was mounted | worn in the assembly operation | work of the pointer for instruments which concerns on embodiment. FIG. 6 is a view corresponding to FIG. 4 of an instrument pointer according to a modified example.

  Hereinafter, exemplary embodiments will be described in detail with reference to the drawings. In the following embodiments, for convenience of explanation, the front end side in the longitudinal direction of the instrument pointer is referred to as “front”, the rear side is referred to as “rear”, and the indicator instrument is viewed from the front, that is, a viewer (driver). However, when the indicator is viewed from the front and the indicated value is confirmed, the front side is referred to as “front” and the back side is referred to as “back”.

  In this embodiment, the technique of the present disclosure will be described by taking an indicator instrument installed in front of the driver's seat of the instrument panel as an example of a combination meter that displays various types of vehicle information.

− Composition of indicating instrument −
FIG. 1 shows a front view of the indicating instrument 1. FIG. 2 is a sectional view of the indicating instrument 1 taken along the line II-II in FIG.

  As shown in FIG. 1, the indicating instrument 1 includes a speedometer 3 that displays a traveling speed, a tachometer 5 that displays an engine speed, and a plurality of (three in the illustrated example) displays that display other information. Specifically, a large display 7 for displaying the remaining amount of fuel, engine water temperature, travelable distance, charging system (battery), engine error information, and the like, and a small display 8 for displaying gear position, etc. A small display 9 for displaying the total travel distance and the like, and lamps (not shown) for displaying various errors and warnings are provided.

  The speedometer 3 is disposed at the center of the indicating instrument 1. The tachometer 5 is disposed on the left side of the speedometer 3. Each of the speedometer 3 and the tachometer 5 is an analog type (pointer type) device using a measuring needle 11. The displays 7, 8, and 9 are each composed of a liquid crystal display or an organic EL (Electro Luminescence) display. The display 7 is disposed on the right side of the speedometer 3. The display 8 is arranged in the lower part of the speedometer 3, and the display 9 is arranged in the lower part of the tachometer 5.

  As shown in FIGS. 1 and 2, the indicator 1 mainly has two indicators 11 for the speedometer 3 and the tachometer 5, and an index 17 including a scale 13 and a character 15 indicated by the indicator 11. A display board 19 provided on the display board 19, an illumination light source 21 disposed on the back side of the display board 19, a driving device 23 for rotating the pointer 11 on the surface of the display board 19, and the light source 21 and the driving device 23. A printed circuit board 25 for controlling the operation and a casing 27 for housing them are provided.

  The pointer 11 is formed of a resin material and has an elongated needle shape, and indicates a predetermined index according to a measurement value measured using a sensor mounted on an automobile. The pointer 11 includes a rotation base 29 that is circular in front view as a center of rotation, an instruction portion 31 that extends from the rotation base 29 toward the tip, and a tail portion 33 that protrudes rearward from the rotation base 29. The design is such that light is emitted in a region where the substantially entire length from the rotation base 29 to the instruction unit 31 is trimmed. The configuration of the pointer 11 will be described in detail later.

  The display panel 19 includes a speedometer area 35 located in the center, a tachometer area 37 located on the left side, and a display arrangement area 39 located on the right side, each set in a circular shape. The speedometer area 35 has an index 17 (scale 13 and number 15) indicating the vehicle speed, and the tachometer area 37 has an index 17 (scale 13 and number 15) indicating the rotational axis of the corresponding pointer 11. It is arranged in an arc shape so that the value increases clockwise as the center.

  Furthermore, below the speedometer area 35 and the tachometer area 37, a display window 41 is formed in a rectangular shape having a size corresponding to the screens of the displays 8 and 9, respectively. A display window 43 is formed in the center of the display arrangement area 39 in a rectangular shape having a size corresponding to the screen of the display 7. These display windows 41 and 43 are openings for allowing the corresponding displays 7, 8 and 9 to be viewed from the front side.

  The display panel 19 is composed of a light-transmitting plate material 45 and a light-shielding printing layer 47 formed on the surface of the plate material 45 and has a shape corresponding to the outer shape of the indicating instrument 1. . The plate material 45 is formed by injection molding or the like, and is made of, for example, an acrylic resin or a polycarbonate resin. The printing layer 47 is formed by molding with a resin material, printing with an ink material, or application of a sheet material made of a resin material.

  The plate material 45 and the print layer 47 have a color scheme that gives contrast to each other. Specifically, the plate material 45 is colored in a high brightness color such as white, and the printing layer 47 is colored in a low brightness color such as gray or black. The index 17 is formed by cutting the printed layer 47 into a shape that represents the scale 13 and the numeral 15. That is, the printed layer 47 is not provided on the portion of the display panel 19 where the index 17 is formed. Thus, the indicator 17 transmits light emitted from the back side of the display panel 19 to the front side.

  The light source 21 includes a display panel light source 49 used to illuminate the display panel 19 and a pointer light source 51 used to illuminate the pointer 11. The light sources 49 and 51 for the display board and the pointer are configured by chip-type LEDs (Light Emitting Diodes) and are mounted on the front side of the printed circuit board 25.

  A plurality of light sources 49 for the display panel are arranged at equal intervals on the circumference of the large diameter along the outer circumferences of the speedometer region 35 and the tachometer region 37, and light is emitted from the back side to the place where the index 17 of the display panel 19 is formed. It comes to irradiate. A plurality of pointer light sources 51 are arranged at equal intervals on a small-diameter circumference around the rotation axis of the pointer 11 so as to irradiate the pointer 11 with light through a through hole 52 formed in the display panel 19. It has become.

  The drive device 23 is configured by a combination of a stepping motor and a reduction gear mechanism, and is mounted on the back side of the printed circuit board 25. The driving device 23 includes a rotating shaft 53 that is rotationally driven under the control of a control circuit 57 (described later) provided on the printed circuit board 25. The rotating shaft 53 is inserted into a through hole 55 formed in the printed circuit board 25 and extends to the front side, and is connected to the rotating base 29 of the pointer 11. The drive device 23 is configured to rotate the pointer 11 to a predetermined position by rotationally driving the rotary shaft 53.

  The printed circuit board 25 has a configuration in which various wirings are printed on an insulating base material and various electronic components are mounted in addition to the light sources 49 and 51 and the driving device 23. Various electronic components include a control circuit 57 formed of a microcomputer. The control circuit 57 acquires vehicle information such as vehicle speed, engine speed, and ON / OFF of an ignition switch by an automobile ECU (Engine Control Unit), and turns on and off the light sources 49 and 51 based on the acquired information. Or the driving device 23 is operated to rotate the pointer 11.

− Composition of guidelines −
FIG. 3 shows a perspective view of the pointer 11. FIG. 4 is a cross-sectional view of the pointer 11 taken along the line IV-IV in FIG. FIG. 5 shows an exploded perspective view of the pointer 11. FIG. 6 shows a bottom view of the pointer 11 with the pedestal member 99 removed. FIG. 7 shows a front view of the base member 99 of the pointer 11.

  As shown in FIGS. 3 and 5, the pointer 11 holds the pointer main body 61 that indicates the indicator 17 of the display panel 19, and the rear end side (one end side) of the pointer main body 61 and can rotate on the display panel 19. And a holder 63 supported by the holder. The pointer main body 61 is configured to guide the light received on the back surface of the base portion 65 constituting the rotation base portion 29 of the pointer 11 toward the tip side, and to emit light by emitting the light from the front surface to the outside. ing.

  Specifically, the pointer main body 61 includes the base portion 65, an instruction portion 31 that extends from the base portion 65 toward the tip, and an extension piece 69 that extends rearward from the surface portion 67 of the base portion 65. The base portion 65 of the pointer 11 has a block portion 71 formed in a fan shape that spreads rearward in a front view. The surface portion 67 of the base portion 65 protrudes from the block portion 71 to the front side, and is formed in a band plate shape that is continuous with the surface portion of the pointing portion 31.

  On both side surfaces of the block portion 71, a pair of positioning projections 72 for positioning the holder 63 are provided with a gap in the front-rear direction. Further, as shown in FIGS. 2 and 6, a light receiving portion 73 that receives light emitted from the back side is provided on the rear side portion of the back surface of the block portion 71. The light receiving portion 73 protrudes on the back side as compared with other portions on the back surface of the block portion 71.

  Further, the block portion 71 is provided with a reflection surface portion 75 that reflects the light received by the light receiving portion 73 toward the tip side. The reflection surface portions 75 extend from the flat surface portions 77 provided on both sides in the width direction of the surface portion 67 toward the rear side and are formed in a shape corresponding to the fan-shaped outer peripheral portion of the block portion 71. The reflection surface portion 75 has an inner surface 79 that faces the back surface of the instruction portion 31, and the inner surface 79 reflects light that has entered from the light receiving portion 73 to the instruction portion 31.

  A triangular reinforcing rib 81 is provided between the reflecting surface portion 75 and the extension piece 69 in the base portion 65 of the pointer main body 61 in a side view. The reinforcing rib 81 reinforces the rigidity of the base of the extension piece 69, connects the outer surface of the reflection surface portion 75 and the back surface of the extension piece 69, and transmits light that has entered the base portion 65 to the rear side of the extension piece 69. Also plays a role.

  A light emitting unit 82 that emits the light reflected by the reflecting surface unit 75 to the outside is provided on the surface of the pointing unit 31 of the pointer main body 61. The indicator 31 has a tapered shape in which the width is slightly narrowed from the base 65 toward the tip and the height is gradually reduced. As a result, the light reflected by the reflecting surface portion 75 is more guided to the light emitting portion 82 as it goes toward the tip of the indicating portion 31, and the light emitting portion 82 emits light with uniform brightness up to the tip side. It has become.

  The light emitting portion 82 is also provided on a portion of the extension piece 69 corresponding to the reinforcing rib 81 from the surface portion 67 of the base portion 65 of the pointer main body 61. That is, the light emitting portion 82 is formed on the surface of the pointer main body 61 from the indication portion 31 to the base portion 65, and further on the surface corresponding to the reinforcing rib 81 of the extension piece 69. And it extends linearly over substantially the entire length excluding the rear side portion of the extension piece 69.

  The light that has entered the base portion 65 of the pointer main body 61 from the light receiving portion 73 is reflected toward the indication portion 31 by the inner surface 79 of the reflection surface portion 75, but part of the reflected light is directed to the front side on the back surface of the base portion 65 or the like. After being reflected, light is transmitted to the rear side of the extension piece 69 through the reinforcing rib 81 provided between the reflection surface portion 75 and the extension piece 69, so that the light emitting portion 82 is attached to the holder 63 (cap 95 described later). Light is emitted also at the portion corresponding to the reflective surface portion 75 of the extension piece 69, and a relatively long light emission line is exhibited.

  As shown in FIGS. 2 and 4, the pointer main body 61 having the above structure includes a transparent needle-shaped light guide 83 serving as a base and a coating film 85 covering the outer peripheral surface of the needle-shaped light guide 83. Has been. The coating film 85 includes a light-transmitting and light-reflective colored semi-transparent colored layer 87, and a top coat layer as a light-shielding covering layer provided on the outer peripheral surface of the semi-transparent colored layer 87. 89.

  The needle-shaped light guide 83 is formed by injection molding or the like, and is made of polymethyl methacrylate resin (PMMA) having a relatively high transparency. The transflective colored layer 87 and the top coat layer 89 are formed by using a known coating method such as spray coating, electrostatic coating, brush coating, or dip coating. Thus, the coating film 85 does not include a layer formed by a method involving excessive heating such as hot stamp printing.

  The transflective colored layer 87 is made of a material such as a thermosetting paint or an ultraviolet curable paint, for example. The transflective colored layer 87 also serves as a primer layer that improves the adhesion between the top coat layer 89 and the needle-shaped light guide 83, and prevents the top coat layer 89 from peeling off.

  The transflective colored layer 87 is given a bright color. The “light color” here means a color corresponding to a lightness of 6 to 10 in the Munsell color system. In this embodiment, the color of the transflective colored layer 87 is white. Thereby, the color tone of the light emitting unit 82 is expressed in white, and the inside of the needle-shaped light guide 83 is not seen through. The light passing through the needle-shaped light guide 83 is reflected well at the interface with the semi-transmissive colored layer 87 and guided to the tip.

  On the other hand, the topcoat layer 89 is made of a material such as a thermosetting paint or an ultraviolet curable paint, for example. The top coat layer 89 has a dark color. The “dark color” here means a color corresponding to lightness of 0 to 5 in the Munsell color system. In this embodiment, the color of the top coat layer 89 is gray or black.

  The light receiving portion 73 of the pointer main body 61 is formed by removing the coating film 85. That is, in the light receiving portion 73 of the pointer main body 61, the coating film 85 is not provided, and the needle-shaped light guide 83 is exposed. In addition, a light emitting hole 91 that emits light guided through the needle light guide 83 to the outside is provided in the surface portion of the coating film 85.

  The light emission hole 91 is formed over substantially the entire length in the longitudinal direction of the surface portion of the pointer main body 61 by laser processing (laser trimming), and the outer periphery is surrounded by the coating film 85 portion left on the surface of the pointer main body 61. It is a single slit. The light emission hole 91 is formed to a depth that penetrates the top coat layer 89 and forms a recess 93 in the transflective colored layer 87. The light emitting portion 82 is configured by a portion of the pointer main body 61 in which the light emission hole 91 is formed.

  The holder 63 includes a cap 95 attached to the base portion 65 of the pointer main body 61, and a base member 99 that partially closes the back surface opening 97 on the back side of the cap 95 and supports the cap 95 and the pointer main body 61.

  As shown in FIGS. 3, 5, and 6, the cap 95 forms the rotating base 29 of the pointer 11 together with the base 65 of the pointer main body 61, and forms the outer shape (circular in front view) of the rotating base 29. Yes. The cap 95 accommodates the block portion 71 of the pointer main body 61 inside and exposes the surface portion 67 of the base portion 65 to the outside.

  Specifically, a slit 101 connected to the back surface opening 97 is formed at a location from the front surface portion of the cap 95 to the front side of the peripheral wall portion. The slit 101 includes a surface opening 103 formed in the surface portion of the cap 95 and a side opening 105 formed in the peripheral wall portion of the cap 95. The indication portion 31 of the pointer main body 61 is inserted through the side opening 105 of the slit 101 and extends outward from the cap 95. Further, the surface portion 67 of the base portion 65 of the pointer main body 61 protrudes to the front side from the surface of the cap 95 through the surface opening 103 of the slit 101.

  A positioning pin 107 extending in the height direction along the inner peripheral surface of the cap 95 is provided inside the cap 95. The positioning pins 107 are arranged in pairs on both sides of the surface opening 103 of the slit 101 with a gap in the direction along the inner peripheral surface of the cap 95, and face the positioning protrusions 72 in the width direction of the pointer 11. Further, a pair of positioning pieces 109 protruding inward (rearward) of the cap 95 are provided at both edge portions of the side opening 105 of the cap 95.

  A weight accommodating portion 111 protruding rearward is provided in a rear portion of the peripheral wall portion of the cap 95. The weight accommodating part 111 has the entrance 113 opened to the front side. The weight accommodating portion 111 accommodates the balance weight 115 inserted from the inlet 113. The balance weight 115 is made of a resin or metal plate, and adjusts the position of the center of gravity of the pointer 11 to or near the rotation axis.

  The inlet 113 of the weight accommodating portion 111 is continuous with the surface opening 103 of the slit 101 and is covered with the extension piece 69 of the pointer main body 61. That is, the extension piece 69 of the pointer main body 61 hides the balance weight 115 in the weight accommodating portion 111. The extension piece 69 of the pointer main body 61 and the weight accommodating portion 111 have the same outer shape when viewed from the front, and constitute the tail portion 33 of the pointer 11. Among them, the extension piece 69 constitutes the entire surface of the tail portion 33.

  A positioning hole 117 is formed on the rear side of the bottom surface portion of the weight accommodating portion 111. A positioning projection 119 is provided on the rear portion of the back side of the balance weight 115. The balance weight 115 is positioned in the weight accommodating portion 111 by inserting the positioning convex portion 119 into the positioning hole 117. An inclined surface 121 that follows the outer surface of the reflecting surface portion 75 of the pointer main body 61 is formed in the front portion on the back side of the balance weight 115.

  A portion of the balance weight 115 corresponding to the inclined surface 121 enters between the reflecting surface portion 75 of the pointer main body 61 and the extension piece 69 and overlaps with the reflecting surface portion 75 in the direction along the rotational axis of the pointer main body 61. Yes. According to such an arrangement of the balance weight 115, the tail portion 33 can be shortened by the amount that the balance weight 115 overlaps the reflecting surface portion 75 of the pointer main body 61 even if the instruction portion 31 is formed to be relatively long. Therefore, it is possible to realize the balanced pointer 11 in which the tail portion 33 is not too long as compared with the instruction portion 31.

  In a state where the base member 99 is not attached, the block portion 71 of the pointer main body 61 is rotated in the internal space of the cap 95 in a direction in which the pointing portion 31 is slid and inserted with respect to the side opening 105 of the slit 101. Is possible. When the cap 95 is attached to the pointer main body 61, the pointer main body 61 and the cap 95 protrude from the pointer main body 61 to the front side with the extension piece 69 inserted through the surface opening 103 of the slit 101, and the reflective surface portion 75 is the cap. 95, the pointing portion 31 moves to the front side around the base 65 or the vicinity thereof, and the extension piece 69 moves to the back side and rotates in a backward direction to move to a predetermined direction. The assembly posture is configured to be possible.

  As shown in FIGS. 5 and 7, the pedestal member 99 includes a base plate portion 123, a rear protruding piece 125 and a front protruding piece 127 as positioning pieces protruding to the front side of the base plate portion 123, and a base plate portion 123. And a supporting tongue 129 provided on the front side of the head.

  The base plate portion 123 has a shape corresponding to a portion of the back surface opening 97 of the cap 95 excluding the light receiving portion 73 of the pointer main body 61. The base plate portion 123 is formed with an open portion 131 that is open to the rear. The light receiving portion 73 of the pointer main body 61 is fitted into the opening portion 131. The light receiving unit 73 is exposed from the holder 63 to the back side through the opening 131.

  A pin hole 133 is formed in the outer peripheral edge portion of the base plate portion 123 so as to open outward. The pin holes 133 are arranged in a pair at intervals in the front-rear direction on both sides in the width direction of the pointer 11. Further, on the both sides of the support tongue 129 in the base plate portion 123, insertion holes 135 opened forward are formed respectively. A boss 136 is provided on the back surface of the base plate portion 123. The rotating shaft 53 of the driving device 23 is inserted and connected to the boss 136.

  The rear protrusion 125 is formed in a small plate shape between the pin holes 133, and is inserted between the pair of positioning pins 107 and between the pair of positioning protrusions 72. And the positioning pin 107 are aligned in the width direction of the pointer 11. The front protrusion 127 is a substantially triangular block piece when viewed from the front, and is inserted between the positioning protrusion 72 and the positioning pin 107 of the pointer main body 61 and the positioning piece 109 so that the positioning piece 109 is indicated by the pointer main body 61. It is sandwiched between the part 31. The pair of front projecting pieces 127 is an example of a restricting structure portion. By sandwiching both positioning pieces 109, the distance between the positioning pieces 109, that is, the width of the side opening 105 is restricted. Fulfill.

  The rear projecting piece 125 and the front projecting piece 127 are respectively provided on both sides of the base plate portion 123 in the width direction of the pointer 11. These rear side protruding pieces 125 and front side protruding pieces 127 are arranged at intervals in the front-rear direction. The support tongue 129 has substantially the same width as the opening width of the side opening 105 of the slit 101 and is fitted into the side opening 105 to close the open end on the back side of the side opening 105.

  The pedestal member 99 fits each pin hole 133 to the corresponding positioning pin 107, each fitting hole 135 to the corresponding positioning piece 109, and the support tongue 129 to the side opening 105 of the slit 101, and the opening portion 131. The light receiving portion 73 of the pointer main body 61 is fitted and fixed to the cap 95 by a known method such as vibration welding. This pedestal member 99 holds the pointer main body 61 firmly in the cap 95 by cooperating with the positioning pins 107 and the positioning pieces 109 of the cap 95 and the positioning protrusions 72 of the pointer main body 61.

− Assembling procedure of the pointer −
FIG. 8 shows a state in which the balance weight 115 is inserted into the cap 95 in the assembly work of the pointer 11. FIG. 9 shows a state in which the pointer main body 61 is assembled to the cap 95 in the assembly work of the pointer 11. FIG. 10 shows a state in which the pointer main body 61 is assembled to the cap 95 in the assembly work of the pointer 11. FIG. 11 shows a state in which the base member 99 is attached to the cap 95 attached to the pointer main body 61 in the assembly work of the pointer 11.

  In order to assemble the pointer 11 having the above-described configuration, first, as shown in FIG. 8, the balance weight 115 is inserted into the weight accommodating portion 111 of the cap 95 by being inserted from the inlet 113. Next, as shown in FIG. 9, the extension piece 69 of the pointer main body 61 is inserted into the back surface opening 97 of the cap 95 from the back side, or is slid rearwardly from the side surface opening 105 of the slit 101, thereby The surface opening 103 is inserted. At this time, the pointer main body 61 takes an inclined posture in which the extension piece 69 protrudes from the surface opening 103 to the front side and the block portion 71 including the reflection surface portion 75 is located in the cap 95.

  Subsequently, as shown in FIG. 10, the pointer main body 61 is rotated backward from the tilted posture of the tip end downward about the base 65 or the vicinity thereof, thereby moving the indicating portion 31 to the front side and extending it. The piece 69 is moved to the back side. When the pointer main body 61 is rotated backward in this way, the indicating portion 31 is inserted into the side opening 105 of the slit 101 from the open end on the back side to the front side, and the back surface of the extension piece 69 eventually becomes the front side of the weight accommodating portion 111. The pointer main body 61 comes into a predetermined assembling posture in which the surface portion 67 of the base portion 65 protrudes to the front side through the surface opening 103 of the slit 101 while being in contact with the end portion and closing the inlet 113.

  After that, as shown in FIG. 11, the base member 99 is inserted into the back surface opening 97 of the cap 101 mounted on the pointer main body 61, and the base member 99 is joined to the cap 95 by a known method such as vibration welding. The pointer 11 can be assembled through the above work steps.

− Effects of the embodiment −
According to the pointer 11 according to this embodiment, the surface of the base portion 65 of the pointer main body 61 is projected to the front side from the surface of the cap 95 through the surface opening 103 of the slit 101. When the light-emitting portion 82 provided on the surface does not emit light, the light-emitting portion 82 appears to physically protrude, and the appearance of the pointer 11 can be improved compared to the case where it appears to be depressed. And since the light emission part 82 was formed only in the surface of the pointer main body 61, from the side surface of the surface part 67 which protruded from the surface opening 103 of the slit 101 among the base 65 also from the side surface of the instruction | indication part 31 of the pointer main body 61. No light leakage occurs, the outline of the light emitting portion 82 can be made clear, and a clear light emitting line can be obtained.

  Further, an extension piece 69 is provided that extends backward from the surface portion 67 of the base portion 65 to the reflecting surface portion 75 with respect to the pointer main body 61, and the extension piece 69 is located behind the surface opening 103 of the slit 101 and the cap 95. Since the surface of the tail portion 33 of the pointer 11 is formed by the extension piece 69 by being arranged on the outer side, it is possible to enhance the sense of design unity between the pointer main body 61 and the cap 95. Further, the cap body 95 is attached to the pointer body 61 in a predetermined assembling posture by rotating the pointer body 61 backward from an inclined posture with the extension piece 69 inserted through the surface opening 103 of the slit 101 of the cap 95 downward. Therefore, the entire front side end surface of the weight accommodating portion 111 provided in the cap 95 can be concealed by the extension piece 69, and the appearance of the pointer 11 can also be improved.

  Further, as the configuration of the pointer main body 61, the outer peripheral surface of the needle-shaped light guide 83 is covered with a light-shielding coating film 85, and the inside of the needle-shaped light guide 83 is formed from the light emission hole 91 formed in the coating film 85. Since the configuration in which the light that has passed through is taken out is adopted, the pointer 11 can be made smaller, thinner, and lighter than the pointer having a configuration in which the cover member is attached to the entire pointer main body. In addition, since the light guided through the needle-shaped light guide 83 can only be emitted to the outside from the light emission hole 91, the portion of the pointer main body 61 where the light emission hole 91 is formed, that is, other than the light emitting portion 82. Light leakage from the portion can be prevented.

  Furthermore, as a configuration of the covering film 85, a semi-transparent colored layer 87 that absorbs light energy more easily than the needle-shaped light guide 83 is formed between the top coat layer 89 having a light shielding property and the needle-shaped light guide 83. Therefore, the top coat layer 89 and the surface portion of the transflective colored layer 87 can be suitably removed with a laser. Thereby, since the light emission hole 91 is formed in the depth which makes the recessed part 93 in the transflective colored layer 87, the edge of the light emission hole 91 can be finished beautifully, and light emission of a smooth line can be obtained. it can. As described above, the sharp and smart design guideline 11 can be realized.

  Further, according to the pointer 11 according to this embodiment, the semi-transparent colored layer 87 is provided with a function as a primer layer for improving the adhesiveness, so that the top coat layer 89 is formed from the surface of the pointer 11 with a simple configuration. Peeling can be prevented. As a result, it is possible to increase the production efficiency by omitting the trouble of forming the primer layer separately from the semi-transparent colored layer 87, and to realize the pointer 11 having no light leakage over a long period of time by suppressing the occurrence of product defects. it can.

  And according to the indicating instrument 1 which concerns on this embodiment, the pointer 11 mentioned above has high design unity with the pointer main body 61 and the cap 95, and there is no light leakage from parts other than a light emission part, and Because it has an excellent characteristic that it is possible to realize a sharp and smart design good-looking pointer that can emit light with a clear and smooth line, halation caused by light leaking from the pointer 11 illuminating the display board 19 In addition, it is possible to realize the indicating instrument 1 that does not cause a phenomenon such as a spot that shines in the form of a dot at the tip of the pointer 11, has high emission luminance of the pointer 11, and has good visibility of the indicated position.

− Modifications−
FIG. 12 shows a view corresponding to FIG. 4 of the pointer 11 according to this modification.

  In the pointer 11 of the above embodiment, the coating film 85 is composed of the semi-transmissive colored layer 87 and the topcoat layer 89. However, in the pointer 11 of this modification, the coating film 85 is shown in FIG. As described above, in addition to the semi-transparent colored layer 87 and the top coat layer 89, the metallic gloss layer 141 is provided. The metallic gloss layer 141 is interposed between the transflective colored layer 87 and the top coat layer 89. The metallic gloss layer 141 is made of a metal material such as aluminum, titanium, stainless steel (SUS), or chromium, and is formed by a known method such as vapor deposition or sputtering.

  According to the pointer 11 according to this modification, since the metallic gloss layer 141 is provided inside the top coat layer 89, the top coat layer is reflected by the action of the light transmitted through the top coat layer 89 reflected by the metal gloss layer 141. 89 can express metallic luster. For example, when the topcoat layer 89 is gray, the pointer main body 61 can be finished in a gun metallic tone by light reflection by the metallic gloss layer 141. Thereby, a high-class feeling can be given to the pointer 11.

  As described above, a preferred embodiment has been described as an example of the technique disclosed herein. However, the technology disclosed herein is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. have been made as appropriate. Moreover, it is also possible to combine each component demonstrated by the said embodiment into a new embodiment. In addition, the constituent elements described in the accompanying drawings and the detailed description may include constituent elements that are not essential for solving the problem. For this reason, it should not be immediately recognized that these non-essential components are essential because they are described in the accompanying drawings and detailed description.

  For example, the following embodiment may be configured as follows.

  In the above embodiment, the extension piece 69 of the pointer main body 61 constitutes the entire surface of the tail portion 33, but the present invention is not limited to this. The extension piece 69 of the pointer main body 61 may partially constitute the surface of the tail portion 33, and the front side end surface of the weight accommodating portion 111 may be partially shown on the surface. Even with such a configuration, it is possible to improve the appearance compared to the case where the entire front side end face of the weight accommodating portion 111 can be seen as it is in a front view.

  Moreover, in the said embodiment, although the needle-shaped light guide 83 consisted of PMMA, it is not restricted to this. PMMA is only an example of a preferable material for the needle-shaped light guide 83, and a polycarbonate resin or other acrylic resin may be employed as long as it has transparency. PMMA is advantageous in terms of high transparency, but has relatively low heat resistance. Therefore, PMMA has high heat resistance when the coating film 85 includes a layer formed by a method involving heating such as hot stamp printing. Materials can be adopted as appropriate.

  Moreover, in the said embodiment, the coating film 85 consisted of the semi-transmissive colored layer 87 and the topcoat layer 89, and the semi-transmissive colored layer 87 assumed that it also served as the primer layer. Moreover, in the said modification, although the coating film 85 was further provided with the metallic luster layer 141, it is not restricted to this. The coating film 85 may include a primer layer that improves the adhesion between adjacent layers separately from the semi-transmissive colored layer 87, or may additionally include other layers.

  Moreover, in the said embodiment, although the color of the transflective colored layer 87 was white, it is not restricted to this. White is merely an example of the color of the semi-transparent colored layer 87, and the semi-transparent colored layer 87 may be colored in other colors such as red and green. It is preferable that This semi-transparent colored layer 87 is a color corresponding to a lightness in the Munsell color system corresponding to 6 to 10 from the viewpoint of suitably guiding light toward the distal end side of the pointer in the needle-shaped light guide 83. Preferably, the color has a lightness corresponding to 8-10.

  Moreover, in the said embodiment, although the light emission hole 91 for forming the light emission part 82 was formed in the slit shape over the substantially whole in the longitudinal direction of the surface part of the pointer main body 61, in this, Not exclusively. The light emitting hole 91 may be divided into two or more in the longitudinal direction of the pointer main body 61, or may be formed only in a specific part such as the instruction unit 31 alone.

  Further, in the above-described embodiment, the guideline according to the technique of the present disclosure and the indicating instrument including the same have been described by taking the combination meter used in the automobile as an example, but the present invention is not limited thereto. Needless to say, the technique of the present disclosure can also be applied to an instrument pointer mounted on another vehicle such as a ship or an aircraft, and an indicating instrument including the same.

  As described above, the technique of the present disclosure is useful for the indicator needle for an instrument mounted on various vehicles such as a vehicle, a ship, and an aircraft, and an indicating instrument including the same.

DESCRIPTION OF SYMBOLS 1 ... Indicator instrument, 3 ... Speedometer, 5 ... Tachometer, 7, 8, 9 ... Display 11 ... Indicator for instruments, 13 ... Scale, 15 ... Character, 17 ... Indicator, 19 ... Display board,
21 ... Light source, 23 ... Driving device, 25 ... Printed circuit board, 27 ... Casing,
29 ... Rotation base, 31 ... Instruction part, 33 ... Tail part, 35 ... Speedometer area,
37 ... tachometer area, 39 ... display arrangement area, 41, 43 ... display window,
45 ... Plate material, 47 ... Print layer, 49 ... Light source for display panel, 51 ... Light source for pointer,
52 ... Through-hole, 53 ... Rotating shaft, 55 ... Through-hole, 57 ... Control circuit, 61 ... Main body of pointer,
63 ... retainer, 65 ... base, 67 ... surface portion, 69 ... extension piece, 71 ... block portion,
72 ... Positioning protrusion, 73 ... Light receiving part, 75 ... Reflecting surface part, 77 ... Flat surface part,
79 ... Inner surface, 81 ... Reinforcing rib, 82 ... Light emitting part, 83 ... Needle-shaped light guide, 85 ... Covering film,
87 ... translucent colored layer, 89 ... topcoat layer, 91 ... light-emitting hole, 93 ... recess,
95 ... Cap, 97 ... Opening on the back surface, 99 ... Base member, 101 ... Slit,
103 ... Surface opening, 105 ... Side opening, 107 ... Positioning pin,
109 ... Positioning piece, 111 ... Weight accommodating part, 113 ... Inlet,
115: Balance weight, 117: Positioning hole, 119: Positioning convex part,
121 ... Inclined surface, 123 ... Base plate part, 125 ... Rear projection piece, 127 ... Front projection piece,
131 ... Open part, 133 ... Pin hole, 135 ... Fitting hole, 136 ... Boss,
141. Metallic luster layer

Claims (7)

A pointer body for indicating an indicator provided on the display panel;
A cap that is attached to the base that is the center of rotation of the pointer body,
A rotating base comprising the base of the pointer body and the cap; an indicator extending from the base toward the tip of the pointer body; and a tail extending rearward from the rotating base;
An instrument in which a reflection surface portion that reflects light received on the back surface of the base portion to the tip side is provided at a base portion of the pointer body, and a light emitting portion that emits light to the outside is provided at least at the base portion and the indication portion of the pointer body Guidelines,
In the place from the front surface portion of the cap to the front side of the peripheral wall portion, a slit connected to the back surface opening formed on the back side of the cap is formed,
The light emitting part is formed only on the surface of the pointer body,
The pointer main body has an extension piece extending rearward from a portion corresponding to the reflective surface portion from the surface portion of the base portion,
In the pointer main body, the indicator is inserted into a side opening formed in a peripheral wall portion of the cap in the slit, and a surface of the base portion is a surface opening formed in a surface portion of the cap in the slit. The reflective surface portion is formed wider than the width of the surface opening of the slit and is accommodated in the cap, while the extension piece extends from the surface opening of the slit. Is also arranged on the outside of the cap at the rear and constitutes the surface of the tail part,
When the cap is attached to the pointer main body, the pointer main body and the cap protrude from the pointer main body into the front side with the extension piece inserted through the surface opening of the slit, and the reflective surface portion is in the cap. From the tilted posture with the tip lowered in a positioned state, the pointing portion moves to the front side and the extension piece moves to the back side with the base portion as the center, and is rotated in a backward direction to obtain a predetermined assembly posture. An instrument guide characterized in that it is configured to be possible. The instrument guideline according to claim 1,
The rear portion of the outer peripheral surface of the cap is provided with a weight accommodating portion that has a differential port that protrudes rearward and opens to the front side,
The weight accommodating portion accommodates a balance weight for adjusting the position of the center of gravity of the pointer main body,
The indicator needle for an instrument, wherein the extension piece of the pointer main body covers the inlet of the weight accommodating portion and conceals the balance weight. In the instrument guideline according to claim 2,
The instrument pointer, wherein the reflecting surface portion of the pointer main body and the balance weight overlap in a direction along a rotation axis of the pointer main body. In the instrument guideline according to any one of claims 1 to 3,
Between the reflective surface portion and the extension piece, a reinforcing rib that transmits light to the rear side of the extension piece is provided,
The indicator for an instrument, wherein the light emitting portion is formed from the indicating portion to a portion corresponding to the reinforcing rib of the extension piece in the pointer main body. In the instrument pointer according to any one of claims 1 to 4,
The pointer main body includes a transparent needle-shaped light guide having the reflective surface portion, and a coating layer covering the outer periphery of the needle-shaped light guide. Configured to guide the light toward
The surface portion of the coating layer is formed with a light emission hole that emits light guided through the needle-shaped light guide to the outside, and the portion of the pointer body where the light emission hole is formed is An indicator for an instrument characterized by constituting a light emitting part. In the instrument guideline according to any one of claims 1 to 5,
A pedestal member that partially closes the back opening of the cap and supports the cap and the pointer body;
The base member and the cap constitute a holder that holds the base of the pointer body and is rotatably supported on the display board;
Positioning pieces projecting inward of the cap are provided on both edge portions of the side opening of the slit of the cap,
The pedestal member is provided with a restricting structure portion that sandwiches the positioning piece between the indicating portion of the pointer main body and restricts an interval between the positioning pieces. Guidelines. An instrument guideline according to any one of claims 1 to 6,
The display board;
A light source that emits light for causing the pointer body to emit light;
An indicator instrument comprising: a driving device that rotationally drives the instrument pointer on the surface of the display panel.

Images