JPH0810779Y2 - Pointer structure of vehicle instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pointer structure for a vehicle instrument.

[Conventional technology]

Conventionally, the fluorescent material applied to the surface of the dial and the pointer is colored by the irradiation light from the ultraviolet light source to develop different colors in the daytime and the nighttime, thereby improving the visibility of the driver. In addition, a vehicle instrument equipped with so-called black light illumination is known.

FIG. 7 shows a conventional vehicle instrument equipped with a black light illumination, in which a predetermined dial 2 is fixed to the inner peripheral surface of a meter case 1 having a projecting lower part, On the surface of the dial plate 2, a fluorescent substance such as fluorescent paint is printed and applied to form characters (not shown) such as predetermined scales. An instrument unit 3 is fixed on the rear side of the dial 2, and the front side of the dial 2 is rotationally driven by the instrument unit 3 to an angular position corresponding to a predetermined measurement amount. A pointer 4 coated with the fluorescent substance is provided on the surface thereof. A black light 5 as an ultraviolet light source is disposed below the front surface of the meter case 1, and a front glass 6 is disposed on the front surface of the meter case 1 at an angle.

In the above-mentioned vehicle instrument, by turning on the black light 5 by an operation switch (not shown) at night or the like, the ultraviolet light emitted from the black light 5 causes the fluorescent substance on the dial 2 and the pointer 4 surface to develop color, Different colors are displayed in the daytime and nighttime to enhance the visibility as an instrument.

[Problems to be solved by the device]

However, in the above-described conventional vehicle instrument, since the pointer 4 is molded from resin, the tip of the pointer 4 needs to have a thickness of at least about 1 mm in order to maintain a predetermined rigidity. As shown in FIG. 8 and FIG. 9, especially in the speedometer, when the irradiation light of the black light 5 is irradiated from the front of the dial 2 and the pointer 4, a shadow 7 due to the thickness of the pointer 4 is generated. It occurs near the character 8 part at the speed of 40 km / h which is the speed for legal steady state on the dial plate 2, and the dial 2 and the character 8 in the part of the shadow 7 do not develop color and become dark, which causes the problem of reduced visibility. are doing.

Therefore, in order to reduce the influence of the shadow generated on the dial by the illumination light without impairing the rigidity of the pointer, the pointer is rotatably driven to an angular position according to a predetermined measurement amount, and is supported by the pointer platform. It is composed of a pointer body that points to the dial part according to the measured amount, of which the pointer body is composed of a conventional resin that is structurally constrained to ensure rigidity, and made of another material. It is possible to do it.

In that case, it is necessary to consider how to firmly attach the pointer main body to the pointer base.

The present invention has been made in view of the above points, and in a vehicle instrument equipped with so-called black light illumination, it is possible to prevent the generation of shadows on the dial plate as much as possible and improve the visibility. An object of the present invention is to provide a pointer structure for a vehicle instrument in which the constituent pointer body can be firmly attached to a pointer platform.

[Means for solving the problem]

In order to achieve the above-mentioned object, a pointer structure of a vehicle instrument according to the present invention comprises a dial on a front surface of a dial, which is rotationally driven to an angular position according to a predetermined measurement amount, and the above-mentioned measurement supported by the pointer. A pointer consisting of a pointer main body for indicating the dial portion corresponding to the amount is arranged, and the surface of the dial and the pointer is irradiated by the irradiation light from the ultraviolet light source arranged in front of the dial and the pointer. In a vehicle instrument adapted to emit a color of a fluorescent substance that has been applied, the pointer body is formed of a thin metal plate, and metal on both edges in the width direction of the pointer body intersecting the extending direction of the pointer body with the thin metal plate. The thin plate portion is bent in a direction intersecting with both the extending direction and the width direction, and protrusions extending outward from the thin metal plate portions at both ends in the width direction of the bent pointer body are formed. On the front of the pointer board, Of the pointer main body that is formed by bending the metal thin plate portions on both edges of, and forms a recess having a shape corresponding to the direction in the direction intersecting with both the extending direction and the width direction and the dimension in the width direction, and at the bottom surface of the recess. In the state where the pointer main body is accommodated in the concave portion, slits penetrating from the front surface side to the rear surface side of the pointer base are formed at both end portions in the width direction of the bottom surface corresponding to the protrusions, respectively. Inserting each of the projecting pieces into each of the slits from the front surface side, bending each projecting piece portion projecting from each of the slits to the rear surface side of the pointer in a direction intersecting the penetrating direction of the slit, It is characterized in that the pointer main body is attached to the pointer base.

[Action]

According to the present invention, since the pointer body is formed of a thin metal plate, the thickness of the pointer body is one-third that of the conventional one.
Can be thinned to one-half of the width, and the metal thin plate portions on both edges in the width direction of the pointer main body that intersect with the extending direction of the pointer main body can intersect with both the extending direction and the width direction. Since it is bent, the whole of the pointer main body is reinforced by the bent metal thin plate portion, and it is possible to prevent the rigidity of the pointer main body from being impaired as much as the thin metal plate reduces the thickness. As a result, the shadow on the dial due to the thickness of the pointer body can be made as small as possible, and in a vehicle instrument equipped with so-called black light illumination, the portion of the dial coated with the fluorescent substance that does not develop color does not develop color. Can be made as small as possible to obtain high visibility as in the daytime.

Further, according to the present invention, while inserting each protrusion of the pointer main body into each slit of the concave portion from the front side of the pointer base, the pointer main body is housed in the concave portion of the front surface of the pointer base, and the pointer is inserted from each slit. The pointer main body can be attached and fixed to the concave portion by being bent so that each of the projecting piece portions projecting to the rear surface side of the table is bent.

Moreover, the concave portion is formed in a shape corresponding to the direction in the direction intersecting with both the extending direction and the width direction of the pointer main body obtained by bending the metal thin plate portions on both edges in the width direction, and the dimension in the width direction. And the slits are formed on the bottom surface of the recess at both end portions in the width direction of the bottom surface corresponding to the protrusions with the pointer main body accommodated in the recess. Therefore, it is possible to prevent the attached and fixed pointer main body from rattling in the extending direction and the width direction in the recess.

Further, since each of the projecting pieces can be formed integrally with the pointer main body, and similarly, the recess and the slit can be formed integrally with the pointer base, it is possible to separately attach the pointer main body to the pointer base. Since no member is required, it is possible to prevent an increase in pointer component parts.

〔Example〕

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

FIGS. 1 to 4 show an embodiment of the present invention, which penetrates a dial (not shown) having a fluorescent material such as a fluorescent paint printed on the surface thereof, and is adapted to a predetermined measurement amount. A substantially cylindrical pointer base 10 is fixed to the tip of the pointer shaft 9 that is rotationally driven to a different angular position.
A concave portion 10a to which a pointer body 11 described later is attached is formed in the upper surface of the concave portion 10a in the radial direction. As shown in FIG. 3, the pointer main body 11 is made of a thin metal thin plate formed so that the width of the tip portion is small and gradually increases toward the base end side. A fluorescent substance such as fluorescent paint is applied.

Then, with the thin metal plate portions at both edges in the width direction of the pointer main body 11 indicated by the broken line in FIG. 3 as boundaries, the metal thin plate portions outside the portions are provided both in the extending direction and the width direction of the pointer main body 11. By being bent in the intersecting direction, that is, the dial side, it is formed in a substantially U-shaped cross section.

Further, as described above, the width of the thin metal plate is gradually increased from the tip end side to the base end side of the pointer main body 11, so that the metal thin plate portion outside the both edge portions is bent. The outer shape in the thickness direction of the pointer main body 11 is gradually thinned from the portion near the base end portion to the portion near the tip end portion.

Further, at both ends in the width direction of the pointer main body 11 formed by bending the thin metal plate as described above, at both ends of the thin metal plate near the base end portion, projecting pieces extending outward of the pointer main body 11 are provided. 11a are extended respectively.

On the other hand, as shown in FIG. 2, the concave portion 10a of the pointer base 10 passes through the center of the front surface 10c of the pointer base 10 and passes through the center thereof.
It is extended over the entire length in the radial direction of 0, and this recess 10a
The depth and width of the recessed portion 10a orthogonal to the extending direction are the thickness direction of the pointer main body 11 in a state where the metal thin plate portions outside the both edge portions are bent, that is, the extending direction and the width direction of the pointer main body 11. And the width of the pointer main body 11 in the above state, respectively.

Then, on the bottom surface 10d of the recess 10a, corresponding to each of the protrusions 11a in a state where the pointer body 11 is accommodated in the recess 10a, at both end positions in the width direction of the bottom surface 10d, the front surface of the pointer base 10 is provided. Slit 10b penetrating from 10c side to rear side
Are respectively formed with dimensions corresponding to the cross section of the projecting piece 11a.

In the pointer 4 of the present embodiment configured as described above, the pointer platform
From the front 10c side of 10 to each slit 10b
11a and insert each of these slits 1 as shown in FIG.
0b from the hollow portion in the pointer base 10, that is, the tip portion of each protrusion 11a protruding to the rear surface side of the pointer base 10, is bent in the radial direction of the pointer base 10, and each of the bent protrusions 11a. Point part 1 at the tip
The pointer main body 11 is attached to the pointer base 10 by engaging with the inner wall of the hollow portion 0, and in this state, the pointer 4 in the completed state 4
Is configured. Here, the pointer body
11 is a bent metal thin plate portion outside the both edge portions described above, by reinforcing and increasing the rigidity obtained by the thickness of the metal thin plate itself, and maintains a predetermined rigidity similar to the conventional, Since the width of the thin metal plate is gradually reduced from the base end portion of the pointer main body 11 toward the tip end portion side,
The outer shape in the thickness direction of the portion of the pointer main body 11 extending from the pointer base 10 near the tip is smaller, and is thinner than one-third to one-half of that of the conventional resin.

In this embodiment, by turning on a black light (not shown) arranged in front of the dial and the hands 4 at night, an ultraviolet ray emitted from the black light is emitted from the dial and the dial. The fluorescent substance on the surface of the pointer 4 is made to develop a color so that different colors are revealed in the daytime and the nighttime.

Therefore, in this embodiment, the pointer main body 11 is formed of a thin metal plate, and the metal thin plate portions at both edges in the width direction of the pointer main body 11 are formed in a direction intersecting both the extending direction and the width direction of the pointer main body 11. While keeping a predetermined rigidity by bending, the width of the bent thin metal plate portion is reduced from the base end side of the pointer main body 11 toward the tip end side, and the outer shape in the thickness direction of the tip end portion of the pointer main body 11 can be formed. Since it was made as small as possible,
As shown in the figure, especially in the speedometer, the shadow 7 caused by the thickness of the pointer main body 11 formed on the dial 2 can be made as small as possible, and thus the shadow 7 does not develop color and is dark. The area that becomes is extremely small, and the visibility of the instrument can be significantly improved as in the daytime.

Further, in the present embodiment, each protrusion 10a provided on the pointer main body 11 to each slit 10b provided on the recess 10a of the pointer base 10 is provided.
The pointer body is attached to the pointer stand 10 by inserting the
Since it is configured to attach 11, by the engagement of the tip portion of each bent protruding piece 11a and the inner wall of the hollow portion of the pointer base 10, each protruding piece 11a from the slit 10b to the front surface 10c side of the pointer base 10a. It can be prevented from falling off.

Then, the slit 10b is the bottom surface 10d of the recess 10a of the pointer 10.
Since it is formed at both ends in the width direction, it is possible to prevent the pointer main body 11 mounted and fixed to the pointer base 10 from rattling in the width direction.

Moreover, since the slit 10c is formed with a size corresponding to the cross section of the projecting piece 11a, the projecting piece 1 with respect to the slit 10c is formed.
The movement of the pointer body 11 in the extending direction of 1a is restricted, so that the pointer body 11 can be prevented from rattling with respect to the pointer base 10 in the extending direction.

FIG. 6 shows another embodiment of the present invention. Particularly in a speedometer, the tip portion of the pointer body 11 formed by bending a thin metal plate is made substantially parallel to the irradiation light emitted from the black light 5. It is formed by twisting so that By doing so, it is possible to further reduce the shadow 7 caused by the pointer main body 11 in the normal speed range of about 20 to 60 km / h.

Although the speedometer has been described above, it goes without saying that the same structure can be applied to the pointers of other vehicle instruments such as a tachometer and a thermometer.

[Effect of device]

As described above, in the pointer structure for a vehicle instrument according to the present invention, the pointer is formed by a thin metal plate, and the thin metal plate portions at both edges in the width direction of the pointer intersecting the extending direction of the pointer are formed by the thin metal plate. , Since it is bent in a direction intersecting with both the extending direction and the width direction, the thickness of the pointer can be made thinner than the conventional one, and the shadow on the dial due to the thickness of the pointer is minimized. As a result, it is possible to obtain the same high visibility as in the daytime by minimizing the portion of the fluorescent material printed and applied on the dial plate that does not emit color.

Further, the pointer structure of the vehicular instrument according to the present invention has a structure in which the metal thin plate portions at both ends in the width direction of the pointer body are bent in a direction intersecting both the extending direction and the width direction of the pointer body. Form the protrusions that extend outward from the
On the front surface of the pointer base, a direction corresponding to both the extending direction and the width direction of the pointer main body obtained by bending the metal thin plate portions at both edges in the width direction, and a shape corresponding to the dimension in the width direction. A concave portion is formed, and the bottom surface of the concave portion penetrates from the front surface side to the rear surface side of the pointer stand at both end portions in the width direction of the bottom surface corresponding to each of the protruding pieces in a state where the pointer main body is accommodated in the concave portion. Slits were formed respectively.

Therefore, while inserting each protrusion of the pointer main body into each slit of the recess of the pointer base from the front side of the pointer base, the pointer main body is housed in the recess of the pointer base, and from each slit to the rear side of the pointer base. By bending each of the protruding projecting portions and attaching the pointer main body to the recess, the pointer main body can be fixed to the pointer base so as not to fall off.

Moreover, the recess is formed in a shape corresponding to the direction in the direction intersecting with both the extending direction and the width direction of the pointer main body obtained by bending the metal thin plate portions on both edges in the width direction, and the dimension in the width direction. In addition, since the slits are formed on the bottom surface of the concave portion at both end portions in the width direction of the bottom surface corresponding to the protrusions while the pointer main body is accommodated in the concave portion, In the recess of the attached pointer body, it is possible to prevent rattling in the direction in which the pointer body moves away from and approaches the pointer base and in the extending direction of the pointer body.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a pointer, FIG. 2 is an exploded perspective view of the pointer, FIG. 3 is an exploded view of a pointer main body, and FIG. The figure is a vertical cross-sectional view for explaining the attachment state of the pointer main body to the pointer stand, Fig. 5 is a vertical cross-sectional view for explaining the state of the shadow on the dial due to this pointer structure, and Fig. 6 is another embodiment of the present invention. FIG. 7 is a vertical sectional view for explaining a shadow state on a dial according to an example, FIG. 7 is a vertical sectional view of a vehicle instrument equipped with so-called black light illumination, and FIGS. 8 and 9 are shadows of pointers in a speedometer. FIG. 8 is a view for explaining the state, FIG. 8 is a front view thereof, and FIG. 9 is a longitudinal sectional view thereof. 2 ... dial, 4 ... pointer, 5 ... black light, 7
...... Shadow, 10 ...... Indicator stand, 10a ...... Recess, 10b ...... Slit, 10c ...... Front of the pointer stand, 10d ...... Recess bottom, 11 ...... Indicator body, 11a ...... Projecting piece.

Claims (1)

[Scope of utility model registration request] 1. A front face of a dial plate, a pointer platform which is rotationally driven to an angular position corresponding to a predetermined measurement amount, and a pointer main body which is supported by the pointer platform and indicates the dial plate position corresponding to the measurement amount. An instrument for a vehicle, in which a fluorescent substance applied to the surface of the dial and the pointer is colored by irradiation light from an ultraviolet light source arranged in front of the dial and the pointer. In the above, the pointer main body is formed of a metal thin plate, and the metal thin plate portions on both edges in the width direction of the pointer main body intersecting the extending direction of the pointer main body with the metal thin plate are provided in both the extending direction and the width direction. In addition to bending in the intersecting direction, projecting pieces extending outward from the thin metal plate portions at both ends in the width direction of the bent pointer body are formed, and both of the width direction are formed on the front surface of the pointer stand. The upper part of the pointer body with the bent thin metal plate Each of the protrusions is formed with a concave portion having a shape corresponding to the dimension in the width direction and the direction intersecting both the extending direction and the width direction, and the pointer body being accommodated in the concave portion at the bottom surface of the concave portion. At the both ends in the width direction of the bottom face corresponding to, each slit is formed penetrating from the front side of the pointer stand to the rear side, and each protrusion is inserted into each slit from the front side of the pointer stand, It is characterized in that the pointer main body is attached to the pointer base by bending the respective projecting piece portions projecting from the respective slits to the rear surface side of the pointer base in a direction intersecting the penetrating direction of the slits. A pointer structure for a measuring instrument for a vehicle.