CN112572148B - Meter device - Google Patents

Meter device Download PDF

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Publication number
CN112572148B
CN112572148B CN202011023135.1A CN202011023135A CN112572148B CN 112572148 B CN112572148 B CN 112572148B CN 202011023135 A CN202011023135 A CN 202011023135A CN 112572148 B CN112572148 B CN 112572148B
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CN
China
Prior art keywords
dial
reflector
top plate
support
pointer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011023135.1A
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Chinese (zh)
Other versions
CN112572148A (en
Inventor
石原宏纪
池田亨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
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Yazaki Corp
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Filing date
Publication date
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Publication of CN112572148A publication Critical patent/CN112572148A/en
Application granted granted Critical
Publication of CN112572148B publication Critical patent/CN112572148B/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22—Pointers, e.g. settable pointer
    • G01D13/26—Pointers, e.g. settable pointer adapted to perform a further operation, e.g. making electrical contact
    • G01D13/265—Pointers which conduct light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/215—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B11/00—Indicating elements; Illumination thereof
    • G12B11/02—Scales; Dials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/23—Optical features of instruments using reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/332—Light emitting diodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/336—Light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/34—Backlit symbols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/345—Illumination of controls

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Measuring Devices (AREA)
  • Instrument Panels (AREA)

Abstract

A meter apparatus comprising: a housing (23), wherein the housing (23) includes a reflector portion (41) having a circular recess; the case (23) has a dial plate support portion (51) for supporting the dial plate (24) at the center of the reflector portion (41), the dial plate support portion (51) has a disk-shaped top plate portion (52) that is in contact with the dial plate (24), and a plurality of support ribs (53) that are provided between the top plate portion (52) and the bottom of the reflector portion (41) and support the top plate portion (52), and the plurality of support ribs (53) are radially arranged along a radial direction centered on the base portion (35) of the pointer (34).

Description

Meter device
Technical Field
The present invention relates to a meter device.
Background
In an instrument device used as an instrument of various vehicles such as an automobile, a ship, or an airplane, there is a device in which a light guide plate for guiding light from a light source is provided along the back surface of a dial, and numerals and scales on the dial are illuminated by irradiating the light guide plate (for example, refer to patent document 1 and patent document 2).
Patent literature
[ patent document 1] JP-A-2001-59750
[ patent document 2] JP-A-2006-112984
Meanwhile, in the instruments described in patent document 1 and patent document 2, a light guide plate is required, and a plurality of light sources are also required so that the entire area of the light guide plate is uniformly illuminated in brightness, that is, a range of 360 degrees with respect to the rotation axis of the mechanism. Therefore, the cost may increase due to the increase in the number of parts and the complexity of the structure.
Disclosure of Invention
According to one embodiment of the present invention, a meter device is capable of uniformly illuminating the entire area around a meter over a 360 degree range while reducing the complexity of its structure.
The meter device according to the embodiment of the invention comprises:
a housing including a reflector portion having a circular recess;
a dial mounted on the housing to block the reflector portion;
a rotation shaft disposed in the center of the reflector section;
a pointer having a light guiding property, configured with a base supported by a rotation shaft, and rotated along a surface of a dial by rotation of the rotation shaft; and
a light source which emits light of the pointer by allowing the pointer to be incident on the base portion of the pointer and irradiates light from the base portion to the reflector portion, in the meter device,
the housing includes a dial support portion for supporting the dial at the center of the reflector portion,
the dial plate support portion includes: a disk-shaped top plate portion abutting against the dial; and a plurality of support ribs which are provided between the top plate portion and the bottom of the reflector portion and support the top plate portion, and
the plurality of support ribs are radially arranged around the base of the pointer.
Drawings
Fig. 1 is a front view of the meter device of the present embodiment.
Fig. 2 is a schematic cross-sectional view of a meter portion of the meter device.
Fig. 3 is a schematic cross-sectional view of the rotary shaft and its surroundings in the meter portion of the meter device.
Fig. 4 is a front view of a housing constituting the meter device.
Fig. 5 is a perspective view of a reflector portion formed on the housing.
Fig. 6 is a cross-sectional view of a reflector portion formed on a housing.
Fig. 7 is a perspective view of a reflector section according to a reference example.
Detailed Description
Specific embodiments according to the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a front view of a meter device 10 according to this embodiment.
As shown in fig. 1, the meter device 10 according to the present embodiment includes two meter sections 11. The meter device 10 is provided in a vehicle such as an automobile, and the meter portion 11 on one side is a speedometer indicating the vehicle speed and the meter portion 11 on the other side is a tachometer indicating the engine speed. The meter device 10 further includes a display 13 and a plurality of display portions 15. The display 13 is formed of, for example, a Liquid Crystal Display (LCD), and displays various information such as a travel distance and information of a vehicle. The display unit 15 displays various information and warnings about the vehicle, and displays the information and warnings by causing a light source provided on the rear surface side to emit light.
Fig. 2 is a schematic cross-sectional view of the meter portion 11 of the meter device 10.
As shown in fig. 2, the meter device 10 has a rear cover 21 on the rear side, and a substrate 22 and a case 23 are fixed to the rear cover 21. A dial 24 in the form of a sheet is laminated on the front surface of the housing 23, and the dial 24 is supported by the front surface of the housing 23.
The light source 31 and the mechanism 32 are mounted on the substrate 22. The light source 31 mounted on the substrate 22 emits visible light, and a Light Emitting Diode (LED) is used, for example.
The mechanism 32 has a rotation shaft 33, and power of a stepping motor (not shown) provided inside the mechanism 32 is transmitted to the rotation shaft 33 via a reduction gear train (not shown). The rotation shaft 33 is formed of a translucent (or light-guiding) resin material having excellent light guiding characteristics.
A pointer 34 is fixed to the rotation shaft 33, and the pointer 34 integrally rotates with the rotation shaft 33 when the rotation shaft 33 rotates. The pointer 34 is formed of an appropriate translucent (or light-guiding) resin material having excellent light guiding characteristics, as in the case of the rotation shaft 33. The pointer 34 includes a base 35 fixed to the rotation shaft 33 and a needle portion 36 extending from the base 35.
Fig. 3 is a schematic cross-sectional view of the rotary shaft 33 and its surroundings in the meter portion 11 of the meter device 10.
As shown in fig. 3, a fitting recess 37 is formed in the base 35 on the side of the rotation shaft 33, and the other end portion of the rotation shaft 33 is fitted in the fitting recess 37. Accordingly, the pointer 34 is fixed to the rotation shaft 33, and the needle portion 36 is rotated by the rotation of the rotation shaft 33. The base 35 of the pointer 34 includes a reflecting surface 38 (see fig. 2) on the base of the needle 36. The base 35 of the pointer 34 includes a conical reflecting surface 39 at a position opposed to the fitting recess 37.
Since the rotation shaft 33 is disposed such that one end surface thereof faces the light source 31, the light L1 and L2 from the light source 31 enters the rotation shaft 33. The light L1, L2 introduced into the rotation shaft 33 from one end surface of the rotation shaft 33 is introduced into the pointer 34 from the other end surface of the rotation shaft 33 and the peripheral surface thereof.
Fig. 4 is a front view of the housing 23 constituting the meter device 10.
As shown in fig. 4, the case 23 includes two reflector portions 41 forming the meter portion 11. The housing 23 includes, between the reflector portions 41, a display mounting recess 40 in which the display 13 is mounted, and a mounting hole 43, to which mounting hole 43 a display lamp such as a light emitting diode forming a plurality of display portions 15 is mounted.
Fig. 5 is a perspective view of the reflector portion 41 formed on the housing 23. Fig. 6 is a cross-sectional view of the reflector portion 41 formed on the housing 23.
As shown in fig. 5 and 6, the reflector portion 41 is formed with a circular concave portion in front view, which is recessed rearward from the front plate portion 42 of the housing 23, and the reflector portion 41 includes a bottom wall portion 44 and a bottom wall portion 45. A circular opening 46 is formed in the center of the bottom wall 44.
The dial support portion 51 is provided in the center of the reflector portion 41. The dial support portion 51 includes a top plate portion 52 and a plurality of support ribs 53 that support the top plate portion 52. The top plate 52 is formed in a disk shape and is disposed at a position facing the opening 46 formed in the bottom wall 44. An insertion hole 55 through which the base 35 of the pointer 34 passes is formed in the center of the top plate portion 52, and a locking claw 56 is formed at an edge portion of the insertion hole 55.
A plurality of support ribs 53 are provided between the bottom wall portion 44 and the top plate portion 52, and the top plate portion 52 is supported at the bottom wall portion 44 by the support ribs 53. The surface of the top plate portion 52 supported on the bottom wall portion 44 by these support ribs 53 is arranged flush with the front plate portion 42 of the housing 23. In this example, five support ribs 53 are provided and arranged at equal intervals in the circumferential direction along the opening 46 of the bottom wall 44.
The support rib 53 is formed in a plate shape and is arranged radially from the center of the reflector portion 41. The support rib 53 is provided to stand upright from the bottom wall portion 44, and an upper portion thereof is connected to the top plate portion 52. The upper portion of the support rib 53 is continuously provided on the peripheral surface of the top plate portion 52. The width dimension of these support ribs 53 gradually increases from one end connected to the top plate portion 52 toward the other end connected to the bottom wall portion 44, as seen from the side. Accordingly, the cross-sectional area of the support rib 53 gradually increases from one end connected to the top plate portion 52 toward the other end connected to the bottom wall portion 44.
In the dial support portion 51 in which the top plate portion 52 is supported by the support rib 53, a plurality of light transmission window portions 57 divided in the circumferential direction by the support rib 53 are provided between the bottom wall portion 44 and the top plate portion 52.
The annular groove portion 61 is formed on the bottom wall portion 44 of the reflector portion 41. The annular groove portion 61 is formed in an annular shape between the peripheral wall portion 45 and the dial support portion 51. The annular groove portion 61 includes: the flat bottom surface 62 is parallel to the dial 24 mounted on the front plate portion 42 in the radial direction, and thus the depth dimension of the annular groove portion 61 is the same in the radial direction. The peripheral wall portion 45 of the reflecting portion 41 is formed perpendicularly to the bottom surface 62 of the annular groove portion 61 formed in the bottom wall portion 44.
As shown in fig. 1 and 2, a sheet dial 24 is superimposed on the front plate portion 42 so as to be mounted on the housing 23. Thus, almost the entire front surface of the housing 23 including the reflector portion 41 is covered by the dial 24. Dial 24 is supported by abutting on top plate 52 of dial support 51 at the center of reflector 41. A part of dial 24 abutting on top plate 52 is locked by locking claw 56 formed on top plate 52.
The dial 24 is provided with a number N and a scale M indicating the vehicle speed and the engine speed at a position covering the reflector portion 41 of the housing 23, and light from the rear surface can be transmitted to the number N and the scale M. The scale M is formed in a ring shape connected in the circumferential direction. Dial 24 is obtained, for example, by printing an opaque light shielding layer on a portion of a resin sheet having photoconductive characteristics other than a portion where number N and scale M are formed.
As shown in fig. 2, in the meter device 10 having the above-described structure, the light L1 introduced from the light source 31 to a part of the pointer 34 via the rotation shaft 33 is reflected by the reflection surface 38 of the base 35 and then guided to the side of the needle 36, whereby the needle 36 emits light and is illuminated accordingly.
The other light L2 introduced into the pointer 34 is reflected by the conical reflecting surface 39 of the base 35 and is irradiated radially toward the periphery centered on the axial center of the rotary shaft 33. The light L2 radially irradiated toward the peripheral edge is introduced from the light transmission window 57 to the reflector 41 of the case 23. The light L2 guided to the reflector portion 41 is reflected by the bottom surface 62 of the annular groove portion 61 of the reflector portion 41 and the peripheral wall portion 45 of the reflector portion 41, and then irradiated to the dial 24. The light L2 guided to the reflector portion 41 includes light reflected by the bottom surface 62 of the annular groove portion 61 of the reflector portion 41 and irradiated to the dial 24 and light directly irradiated to the dial 24.
Here, a plurality of support ribs 53 are provided around the base 35 of the pointer 34. However, the support ribs 53 are radially arranged in a radial direction with the base 35 of the pointer 34 as a center. Therefore, the light L2 from the base 35 of the pointer 34 is guided to the reflector portion 41 over the entire circumference without being blocked by the support rib 53 as much as possible.
As described above, according to the meter device 10 of the present embodiment, since the dial support portion 51 that supports the dial 24 is provided at the center of the reflector portion 41, the dial 24 that is mounted to block the reflector portion 41 formed of the circular concave portion can be well supported at the center of the reflector portion 41. Accordingly, dial 24 is not recessed in the center of reflector portion 41, so that dial 24 can be smoothly mounted on case 23, and workability of mounting dial 24 on case 23 can be improved.
The dial support 51 is supported by a plurality of support ribs 53 radially arranged around the base 35 of the pointer 34, and contacts a disk-shaped top plate 52 of the dial 24. Accordingly, the light L2 irradiated from the base 35 of the pointer 34 can be guided to the reflector portion 41 without being blocked by the support rib 53 as much as possible, and the light L2 reflected by the reflector portion 41 can illuminate the dial 24 while reducing the luminance unevenness. Compared with a structure in which a light guide plate is arranged along the rear surface of the dial and is irradiated by a plurality of light sources to illuminate the dial, the dial can be illuminated without luminance unevenness in a range of 360 degrees with respect to the rotation axis 33 of the mechanism 32, while reducing the number of parts and reducing the cost.
Here, by making the annular groove portion 61 of the reflector portion 41 face outward Zhou Bianjian, the brightness of the outer peripheral portion can be increased, but shadows of the support ribs 53 are easily generated. Conversely, the groove 61 of the reflector 41 faces outward Zhou Bianshen, and the brightness of the outer peripheral portion decreases.
In the meter device 10 of the present embodiment, an annular groove portion 61 including a bottom surface 62 parallel to the dial 24 is formed around the dial support portion 51 at the bottom of the reflector portion 41. According to the meter device 10, the light L2 irradiated from the base 35 of the pointer 34 is reflected by the bottom surface 62 parallel to the annular groove portion 61 of the dial 24 and the peripheral wall portion 45 perpendicular to the bottom surface 62, so that the dial 24 can be irradiated more favorably by reducing the luminance unevenness in the radial direction.
Since the reflector portion 41 includes the peripheral wall portion 45 perpendicular to the bottom surface 62 of the annular groove portion 61, the shadow formed by the support rib 53 can be reduced by the light L2 reflected by the peripheral wall portion 45 perpendicular to the bottom surface 62 of the annular groove portion 61 and traveling radially inward.
According to the meter device 10 of the present embodiment, since the width dimension of the support rib 53 in the radial direction centering on the base 35 of the pointer 34 gradually increases from the top plate portion 52 toward the base of the reflector portion 41, the top plate portion 52 can be reliably supported by increasing the strength of the support rib 53, while blocking of the light L2 is prevented as much as possible by reducing the thickness of the support rib 53.
The locking claw 56 formed on the top plate portion 52 is locked to the dial 24, so that the dial 24 can be easily held in the center of the reflector portion 41 by the top plate portion 52.
Next, a reference example of the reflector section will be described.
Fig. 7 is a perspective view of a reflector section according to a reference example.
As shown in fig. 7, in the reflector portion 71 of the reference example, a pointer portion 73 including a plurality of mounting holes 72 protrudes, and a display lamp such as a light emitting diode is mounted on the plurality of mounting holes 72. A locking claw 74 for locking the dial is formed on the pointer portion 73. On the reflector portion 71, the bottom surface 75 is gradually inclined toward the driver side toward the outside in the radial direction.
In the reference example, since the pointer portion 73 protrudes in the reflector portion 71, it is impossible to irradiate an area of the entire communication direction in the reflector portion 71, and thus the illumination range is narrowed and the illumination effect is limited. In this reference example, since the bottom surface 75 of the reflector portion 71 is gradually inclined toward the driver side toward the outer side in the radial direction, the light that irradiates the dial is not uniform in the radial direction, and therefore the brightness is reduced. Non-uniformity occurs.
The present invention is not limited to the above-described embodiments, and can be appropriately modified and improved, and materials, shapes, sizes, numbers, positions, and the like of the respective members in the above-described embodiments can be freely selected and are not limited as long as the present invention can be realized.
For example, in the above-described embodiment, although the case where five support ribs 53 are provided is described, the number of support ribs 53 is not limited to five as long as a plurality of support ribs 53 are provided. The optimum number of the support ribs 53 is five, and by providing five support ribs 53, the top plate portion 52 can be well supported while preventing blocking of light.
Although the above-described embodiment describes a structure in which dial 24 is locked by locking pawls 56 provided on top plate 52, dial 24 may be fixed to top plate 52 by other fixing methods. For example, as another fixing method, a method is proposed in which dial 24 is bonded and fixed to top plate 52 by an adhesive material.
Although the above-described embodiment describes the structure in which the two meter portions 11 are formed so as to cover the two reflector portions 41 with one dial 24, the two reflector portions 41 may be covered with the two dials 24, respectively. In the case where two reflector portions 41 are covered with one dial 24, the number of dials 24 can be reduced, thereby reducing the cost.
[1] The meter device includes:
a case (23) that includes a reflector section (41) having a circular concave section;
a dial (24) mounted on the housing (23) to block the reflector portion (41);
a rotation shaft (33) which is arranged in the center of the reflector unit (41);
a pointer (34) having a light guiding property, provided with a base (35) supported by the rotation shaft (33), and rotated along the surface of the dial (24) by the rotation of the rotation shaft (33); and
a light source (31) which irradiates the pointer (34) with light by allowing the light to enter the base (35) of the pointer (34) and irradiates the reflector (41) with the light from the base (35), wherein
The housing (23) includes a dial support section (51) for supporting the dial (24) at the center of the reflector section (41),
the dial support section (51) comprises: a disk-shaped top plate (52) that is in contact with the dial (24); and a plurality of support ribs (53) which are provided between the top plate (52) and the bottom of the reflector (41) and support the top plate (52), and
the plurality of support ribs (53) are radially arranged along a radial direction centering on the base (35) of the pointer (34).
According to the meter device having the above-described configuration [1], since the dial support portion for supporting the dial is provided at the center of the reflector portion, the dial mounted so as to block the reflector portion formed by the circular concave portion can be supported well at the center of the reflector portion. Therefore, the dial is not recessed in the center of the reflector portion, so that the dial can be smoothly mounted on the housing, and the operability of mounting the dial on the housing can be improved.
The dial support portion supports a disk-shaped top plate portion on which the dial is abutted by a plurality of support ribs arranged radially about a base portion of the pointer. Therefore, light irradiated from the base of the pointer can be guided to the reflector portion without being blocked by the support rib as much as possible, and light reflected by the reflector portion can illuminate the dial while reducing uneven brightness. Compared with a structure in which a light guide plate is arranged along the rear surface of the dial and is irradiated by a plurality of light sources to illuminate the dial, the dial can be illuminated without uneven brightness, while reducing the number of parts and reducing the cost.
[2] In the case of a meter device, the meter device,
an annular groove portion (61) having a bottom surface (62) parallel to the dial (24) is formed around the dial support portion (51) on the bottom of the reflector portion (41), and
the reflector portion (41) may include a peripheral wall portion (45) perpendicular to a bottom surface (62) of the annular groove portion (61).
According to the meter device having the above-described configuration [2], light irradiated from the base of the pointer is reflected by the bottom surface of the annular groove portion parallel to the dial and the peripheral wall portion perpendicular to the bottom surface. Thereby, the uneven brightness in the radial direction can be reduced and the dial can be irradiated more well. In particular, the shadow formed by the support rib can be reduced by light reflected at the peripheral wall portion perpendicular to the bottom surface of the annular groove portion and moving inward in the radial direction.
[3] In the case of a meter device, the meter device,
the width dimension of the support rib (53) in the radial direction may gradually increase from the top plate portion toward the bottom of the reflector portion (41).
According to the meter device having the above-described structure [3], the width dimension of the support rib in the radial direction gradually increases from the top plate portion toward the bottom of the reflector portion, and therefore, the top plate portion can be reliably supported by increasing the strength of the support rib while preventing blocking of light as much as possible by reducing the thickness of the support rib.
[4] In the case of a meter device, the meter device,
a locking claw (56) for locking the dial (24) can be formed on the top plate (52).
According to the meter device having the above-described configuration [4], the locking claw formed on the top plate portion is locked to the dial, so that the dial can be easily held in the center of the reflector portion by the top plate portion.
According to the present invention, it is possible to provide a meter device capable of uniformly illuminating the entire area around the meter over a range of 360 degrees without luminance unevenness while reducing the complexity of its structure.

Claims (5)

1. A meter apparatus comprising:
a housing including a reflector portion having a circular recess;
a dial mounted on the housing to block the reflector portion;
a rotation shaft disposed in the center of the reflector section;
a pointer having a light guiding property, configured with a base supported by the rotation shaft, and rotated along a surface of the dial by rotation of the rotation shaft; and
a light source that irradiates the pointer by allowing light to be incident on the base portion of the pointer, and irradiates the light from the base portion to the reflector portion, wherein
The housing includes a dial support portion supporting the dial at the center of the reflector portion,
the dial plate support portion includes: a disk-shaped top plate portion that abuts the dial plate; and a plurality of support ribs which are provided between the top plate portion and the bottom of the reflector portion and support the top plate portion, and
the plurality of support ribs are radially arranged along a radial direction centering on the base portion of the pointer,
an opening portion having a circular shape formed at the bottom of the reflector portion, and the top plate portion being disposed at a position facing the opening portion,
one end of each of the plurality of support ribs on one side of the top plate portion is coupled to an outer peripheral edge of the top plate portion, the other end of each of the plurality of support ribs on one side of the bottom of the reflector portion is coupled to an outer peripheral edge of the opening portion, and each of the plurality of support ribs has a plate shape extending in an axial and radial direction of the rotation shaft.
2. The meter device of claim 1, wherein
An annular groove portion having a bottom surface parallel to the dial is formed around the dial support portion on the bottom of the reflector portion, and
the reflector portion includes a peripheral wall portion perpendicular to the bottom surface of the annular groove portion.
3. The meter device according to claim 1 or 2, wherein
The width dimension of the support rib in the radial direction gradually increases from the top plate portion toward the bottom portion of the reflector portion.
4. The meter device according to claim 1 or 2, wherein
A locking claw for locking the dial is formed on the top plate portion.
5. A meter apparatus according to claim 3, wherein
A locking claw for locking the dial is formed on the top plate portion.
CN202011023135.1A 2019-09-30 2020-09-25 Meter device Active CN112572148B (en)

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JP2019-180156 2019-09-30
JP2019180156A JP7136758B2 (en) 2019-09-30 2019-09-30 meter device

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JP2018004303A (en) * 2016-06-28 2018-01-11 日本精機株式会社 Instrument device

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JP2006112984A (en) 2004-10-18 2006-04-27 Denso Corp Dial fixing structure of instrument

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Publication number Priority date Publication date Assignee Title
CN102416873A (en) * 2010-09-14 2012-04-18 本田技研工业株式会社 Vehicle meter device
CN103597323A (en) * 2011-06-06 2014-02-19 矢崎总业株式会社 Lighting structure for meter device
JP2013088351A (en) * 2011-10-20 2013-05-13 Yazaki Corp Meter device
JP2014035298A (en) * 2012-08-09 2014-02-24 Yazaki Corp Illumination structure of meter device
CN105093386A (en) * 2014-05-19 2015-11-25 矢崎总业株式会社 Liquid crystal display device and vehicle measuring instrument
WO2017018196A1 (en) * 2015-07-27 2017-02-02 日本精機株式会社 Display device
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JP2018004303A (en) * 2016-06-28 2018-01-11 日本精機株式会社 Instrument device

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DE102020123511B4 (en) 2024-03-21
JP7136758B2 (en) 2022-09-13
CN112572148A (en) 2021-03-30
JP2021056121A (en) 2021-04-08
DE102020123511A1 (en) 2021-04-01

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