JPH0449545Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a dial vibration isolating device for instruments installed in vibrating and high-temperature environments in automobiles, motorcycles, small ships, and the like.

Prior Art As a conventional structure for preventing vibration of this type of meter, a device shown in FIG. 3 is known (see Japanese Utility Model Application Publication No. 130218/1983). In FIG. 4, an instrument housing 4 is composed of a lower instrument case 1, an upper case 2 that covers the opening of the instrument case 1, and a transparent glass 3 provided on the upper instrument case 2. ing. This instrument housing 4
A facing 2a is provided on the lower side of the upper instrument case 2, the facing 2a has an opening in the center, a dial 5 is provided below the opening 2b, and a pointer 6 is provided in the center of the dial 5. is provided. In addition, an instrument body 7 and a lighting lamp 8 are fixed in the instrument case 1 on the lower side of the instrument housing 4, and a dial 5 is fixed to this instrument body 7 with screws or the like. A pointer 6 is connected to the shaft. Furthermore, in this instrument, a notch 5' is provided in the dial 5 to prevent vibration of the dial 5.
A cylindrical elastic body 9 is attached to this notch 5' by fitting the central notch,
Vibration of the dial 5 is prevented by the end of the elastic body 9 coming into contact with the endpaper 2a.

In addition, vehicle instruments are sometimes exposed to sunlight, which increases the temperature inside the instrument, and when the dial itself is exposed to direct light, the dial becomes hot and the acrylic material becomes heated. The light guide may be deformed and the illumination effect may be adversely affected. In order to prevent thermal deformation of this light guide, a fifth
The instrument shown in the figure is known.
(See Publication No. 32420). In Fig. 5, the instrument body 1
0, the dial 11 and light guide 12 are fixed with screws 13.
Projections 11a and 11b are provided at the portion 3 and other appropriate locations, and a gap is provided between the dial 11 and the light guide 12. Note that light is guided from the lamp 14 to the light guide 12 .

Problems to be Solved by the Invention However, in the first conventional instrument configured as described above, when a light guide is provided at the bottom of the dial 5, direct sunlight entering through the transparent glass 3 It is not possible to prevent thermal deformation of the light guide, and the second conventional example has the disadvantage that no measures are taken against vibration.

Means for Solving the Problems In order to solve the above problems, the present invention uses a synthetic resin light guide with good transparency and a display section such as scales and characters on the surface of the light guide. A device in which a dial is constructed by overlapping thin plates made of synthetic resin with translucent properties, and the dial is fixed to the upper part of the instrument body via screws or the like,
The thin plate and the light guide are arranged with a gap between them, and a buffer member made of an elastic material and having two parallel grooves is provided, and the grooves of the buffer member are provided at the periphery of the thin plate and the light guide. The instrument case is characterized in that the instrument case is provided with a contact member inserted into the instrument case and abutting at least one of the upper and lower surfaces of the buffer member.

Function In the present invention, the thin plate of the dial and the peripheral edge of the light guide are inserted into two grooves formed in a buffer member made of an elastic material, respectively, and an abutment that contacts at least one of the upper and lower surfaces of the buffer member is provided. By providing the member in the instrument case, vibration of the dial can be prevented and thermal deformation of the light guide can be prevented.

Embodiment FIG. 1 shows a perspective view of the main parts of an instrument according to an embodiment of the present invention. In FIG. A dial 17 is formed by overlapping a transparent thin plate 16 with display parts such as scales and characters on the surface side of the light body 15.
The dial 17 is fixed to the instrument body with screws or the like, as shown in FIG. Cuts 15' and 1 are made in the peripheral edges of the light guide 15 and the thin plate 16.
6' is provided. In addition, as shown in FIG. 1b, a buffer member 18 made of an elastic material is provided with two grooves 18a and 18b on the side surface.
The grooves 18a and 18b are inserted into the notches in the light guide 15 and the thin plate 16. When the buffer member 18 is inserted between the peripheral edges of the light guide 15 and the thin plate 16 in this way, the buffer member 18 is inserted as shown in FIG.
The lower surface 18c is in contact with an abutting member consisting of a pin 20 that stands upright from the bottom of the instrument housing 19, and the upper surface 18d of the buffer member 18 is in contact with a protrusion 21' of a facing 21 provided at the upper part of the instrument housing 19. be touched. Note that a transparent glass 22 is attached to the upper part of the endpaper 21.

In the instrument of this embodiment configured in this way, the vibration of the dial 17 is suppressed by firmly sandwiching and holding the light guide 15 and the thin plate 16 that make up the dial 17 with the buffer member 18, and further by applying contact with the buffer member 18. Contacted pin 20
This is effectively prevented by the abutting member, and
Deformation of the light guide 15 of the dial 17 is prevented by the gap formed between the thin plate 16 and the buffer member 18.

FIG. 2 is a diagram showing the structure of the main parts of a meter according to another embodiment of the present invention, including a light guide 15, a thin plate 16, a dial 17, a meter housing 19, a pin 20, a facing 21, and a transparent glass 22. The configuration of is the same as the configuration of FIG. 1c, but in this embodiment, the configuration of FIG.
As shown in , the buffer member 23 has two grooves 23
a, 23b are formed, and these grooves 23a, 23
The peripheral edges of the light guide plate 15 and the thin plate 16 are respectively held by the portions b. As shown in FIG. 2b, the upper surface of the buffer member 23 that holds the light guide plate 15 and the peripheral edge of the thin plate 16 of the dial 17 is in contact with the endpaper 21, and the lower surface of the buffer member 23 is in contact with the pin 20. be touched.

In this embodiment configured in this way, the same effects as in the above embodiment can be obtained.

Effects of the Invention As is clear from the above explanation, the present invention uses the thin plate of the dial on which numbers or letters are written and the peripheral edge of the light guide of the dial that guides the light of the lamp as a spacer. Vibration of the dial can be prevented by inserting the buffer member into two grooves provided in the acting elastic material and bringing the buffer member into contact with a contact member provided in the instrument housing. Thermal deformation of the light guide of the dial due to direct sunlight incident through the transparent glass of the instrument case can be prevented by the gap between the thin plate of the dial and the light guide formed by the buffer member.

[Brief explanation of the drawing]

Fig. 1 is a perspective view and a sectional view of the main part of a meter according to an embodiment of the present invention, Fig. 2 is a perspective view and a sectional view of the main part of another embodiment of the invention, and Fig. 3 is a perspective view and a sectional view of the main part of a meter according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a portion of another conventional meter. 15... Light guide, 16... Thin plates 16, 17...
Dial, 18, 23...buffer member, 19...pin, 21...cover, 22...transparent glass.

Claims (1)

[Scope of utility model registration request] A dial is created by overlapping a synthetic resin light guide with good transparency and a thin transparent synthetic resin plate with display parts such as scales and letters on the front side of the light guide. The dial is fixed to the upper part of the instrument body via screws or the like, and the thin plate and the light guide are arranged with a gap between them, and a parallel plate made of an elastic material is used. A buffer member having two grooves formed therein is provided, the thin plate and the peripheral edge of the light guide are inserted into the grooves of the buffer member, and a contact member that abuts at least one of the upper and lower surfaces of the buffer member is inserted into the groove of the buffer member. An anti-vibration device for instrument dials built into the case.