JPH0725629Y2 - Anti-vibration device for instruments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vibration isolator for an instrument used in a vibrating atmosphere such as a motorcycle, an automobile or an agricultural machine.

[Prior Art] Conventionally, in this type of instrument device, for example, instrument for a vehicle such as a motorcycle, the instrument body is housed and fixed in a case whose front side is opened, and a display plate is attached to the front face of the instrument body with a screw. A dial plate is fixed to the front opening of the case and covers the gap between the peripheral edge of the display plate and the inner peripheral surface of the case. The transparent plate covers the front of the case via the dial plate. The protective cover is fixed to the case by suitable means such as screws.

By the way, in general, the display plate and the instrument main body are fixed by screwing in the vicinity of the center of the display plate, but the normal display plate is formed with a sufficiently larger area than the instrument main body in consideration of visibility and the like. The peripheral portion of the display plate, which is separated from the fixed portion by the screw, is likely to resonate due to the vibration received from the vehicle, and this resonance may adversely affect the indicating characteristic of the instrument or cause squeak noise. In order to prevent such vibration of the periphery of the display plate satisfactorily, for example, as shown in FIG. 11, a cylindrical boss portion 3 is formed on the inner peripheral wall of the case 2 for accommodating the instrument main body 1, and the boss portion 3 is formed. It is known that the tip of 3 is covered with a cushioning rubber 4, and the cushioning rubber 4 is abutted against the peripheral portion of the rear surface of the display plate 5 to which the instrument body 1 is attached and fixed to suppress the vibration of the display plate.

[Problems to be solved by the device]

In the above-mentioned conventional technique, since the buffer rubber 4 prepared separately is used, the number of parts is increased, and the buffer rubber 4 has to be fitted into the tip portion of the boss portion 3, which is troublesome in assembling work and workability is improved. There was a problem that was bad.

Therefore, an object of the present invention is to provide an antivibration device for a measuring instrument, which can suppress the vibration of the display plate satisfactorily and reduce the number of parts to simplify the assembling work.

[Means for Solving the Problems]

According to the present invention, a display plate is provided on the front side of a case, and in front of the display plate, there is provided a dial plate with a packing member fitted around the periphery thereof, and a transparent protection is provided on the front surface of the case through the packing member. In an instrument device in which a cover is provided and the protective cover and the case are fixed to each other, a buffer protrusion is formed on the rear surface of the packing member, and the display is provided on the rear surface of the dial plate via the buffer protrusion. A projecting portion that abuts against the front surface of the plate is vertically provided, and a receiving portion that holds the abutting portion of the display plate is provided on the inner peripheral surface of the case.

[Operation] With the above configuration, by fixing the case and the protective cover, the protruding portion provided on the dial plate is abutted against the front surface of the display plate through the buffering protrusion of the packing member, and the peripheral edge of the front surface of the display plate is elastically pressed. In addition, the abutting portion of the display portion is sandwiched between the cushioning protruding portion and the receiving portion of the case, and vibration of the peripheral portion of the display plate is prevented.

[Embodiment] Hereinafter, an embodiment of the present invention will be described as an example in which it is applied to an instrument such as a motorcycle.

FIGS. 1 to 4 show a first embodiment of the present invention, in which 11 is a case having an opening on the front side, in which an instrument main body 12 such as a speedometer and a fuel gauge is housed and fixed, A display plate 13 is attached and fixed to the front surface of the instrument body 12 with screws 14. A pointer 15 is provided in front of the display plate 13 so as to be linked to the instrument body 12, and the display value can be read by comparing the pointer 15 with the scale and numeral display portion 16 provided on the front surface of the display plate 13. I have to. Further, the display unit 16 is formed by printing with a translucent ink, and the display unit 16 is formed to be light transmissive by printing a non-translucent ink except the display unit 16 to form a light shielding layer, At night, etc., the illumination lamp 17 provided in the case 11 is turned on to directly transmit and illuminate the display unit 16, and a part of the illuminating light beam is emitted from the gap between the peripheral edge of the display plate 13 and the inner peripheral surface of the case 11. The display unit 16 is indirectly guided by leading it to the front side of the display plate 13 so that the visibility of the display unit 16 is kept good when the surroundings are dark such as at night.

Reference numeral 18 denotes a ring-shaped packing member having a U-shaped vertical cross-section and made of, for example, synthetic rubber, which is mounted on the peripheral edge of the front surface of the case 11, and the display plate 13 is provided in a groove 19 provided on the inner peripheral surface of the packing member 18. A dial plate 20 for blinding the internal equipment is fitted through a gap between the case 11 and the case 11, and a positioning pin 21 and a rib-shaped protruding portion 22 are provided at appropriate positions on the rear surface of the dial plate 20. At the bottom of the groove portion 19 of the packing member 18, a buffer projection 23 corresponding to the projection 22 is vertically extended downward, and the projection 22 is provided in a concave groove 24 provided in the buffer projection 23. The packing member 18 and the facing plate 20 are assembled by fitting.

Further, the display plate 13 is provided with a plurality of protrusions 25 corresponding to the buffer protrusions 23 and serving as abutting portions of the buffer protrusions 23.
And a receiving portion 26 formed of a notch groove for receiving the projecting piece 25 on the inner peripheral surface of the case 11 while protruding from the peripheral edge of the case 11.
Is provided. Then, when the display plate 13 is assembled to the case 11, the projection piece 25 is fitted to the receiving portion 26 of the case 11 to assemble the display plate 13 in a positioned state, and then the dial plate 20 having the packing member 18 fitted to the periphery thereof. The positioning pin 21 is inserted into the receiving hole 21B of the boss portion 21A projecting in the case 11 to position the dial plate 20 on the peripheral edge of the opening of the case 11, and the transparent protective cover 27 is placed on the case 11 from the front thereof. Then, the protective cover 27 and the case 11 are fixed by the mounting screws 28.

In this case, by fixing the case 11 and the protective cover 27, the packing member 18 is sandwiched in a compressed state between the case 11 and the protective cover 27, and the inside of the case 11 is kept in a good airtight state. In addition to blocking the ingress of water drops and dust,
The projecting portion 22 vertically provided on the rear surface of the dial plate 20 is provided with the packing member 18.
Via a cushioning projection 23 provided on the display plate 13 and elastically abutted against a projection 25 formed on the peripheral edge of the display plate 13, and
The vibration of the display plate 13 is prevented by sandwiching 25 between the receiving portion 26 provided on the case 11 and the buffering protrusion 23.

As described above, in the present invention, the cushioning protrusion 23 for suppressing the vibration of the peripheral portion of the display plate 13 is integrally provided with the packing member 18 for keeping the case 11 airtight, thereby reducing the number of parts and packing. The dial plate 20 with the member 18 fitted thereto can be assembled to the case 11, and at the same time, the cushioning protrusion 23 provided on the packing member 18 can be brought into contact with the display plate 13, so that the assembly work can be easily performed.

FIGS. 5 and 6 show a second embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In this example, a lighting chamber 29 is formed inside the case 11, and in this lighting chamber 29, an operating state of various devices of the vehicle, for example, a display lamp 30 that is turned on according to the operating state of a turn signal indicator is arranged, A display plate 13 arranged on the front surface of the case 11.
Is provided with a display window portion 31 facing the illumination chamber 29, and a display lens 32 is fitted in the display window portion 31. In addition, a light-shielding packing 33 that adheres closely to the front end of the illumination chamber 29 is attached to the rear edge of the display window 31, and the peripheral edge of the display plate 13 is attached to the front end of the case 11 close to the illumination chamber 29. A receiving portion (26) is formed to support a protruding piece (25) that is formed by protruding. Then, the packing member 18 is formed with a buffer projection 23 having a U-shaped cross section as in the first embodiment, and a projection vertically provided on the dial plate 20 in a groove 24 provided in the buffer projection 23. The packing member 18 is fitted to the dial plate 20 by fitting the installation portion 22, and then the case 11 and the protective cover 27 are fixed via the dial plate 20, so that the same as in the first embodiment. It is possible to suppress the vibration of the display plate 13 by elastically abutting the tip end of the buffer protrusion 23 with the protrusion 25 of the display plate 13 and sandwiching between the buffer protrusion 23 and the receiving portion 26 of the case 11.

Further, in this example, the light-shielding packing 33 attached to the rear surface of the display plate 13 comes into close contact with the front edge of the illumination chamber 29 in a compressed state, thereby shielding the illumination light of the display lamp 30 in the illumination chamber 29 and the case 11 It is possible to prevent light leakage to the outside.

7 and 8 show a third embodiment of the present invention, in which the same parts as those of the first embodiment are designated by the same reference numerals and the detailed description thereof will be omitted.

In each of the above-mentioned embodiments, the projecting portion 22 vertically provided on the rear surface of the dial plate 20.
However, in this example, a thick protruding portion 34 is continuously formed on the rear surface of the dial plate 20, and the inner end of the groove portion 19 of the packing member 18 is correspondingly formed. A buffer protrusion 35 having an L-shaped cross section is continuously formed from the edge, and the case 11 is formed.
An annular receiving portion 36, which is a step groove for supporting the peripheral edge of the display plate 13, is formed on the inner peripheral edge of the front surface of the. Then, by fitting the peripheral edge of the display plate 13 to the receiving portion 36 of the case 11, the display plate is attached to the case 11.
Assemble 13 and put a packing member on the display plate 13.
18 and the protective cover 27 are sequentially overlapped with each other, and the protective cover 27 and the case 11 are fixed to each other, so that the annular cushioning protrusion 35 formed on the rear surface of the packing member 18 is abutted with the display plate 13. The buffer projection 3
By clasping the entire peripheral edge of the display plate 13 between the 5 and the receiving portion 36 of the case 11, it is possible to reliably prevent the vibration of the display plate 13.

Further, in the present embodiment, the display plate is provided on the receiving portion 36 of the case 11.
Since the peripheral edge of 13 is fitted, there is no gap between the case 11 and the peripheral edge 13A of the display plate 13 through which the illumination light beam of the illumination lamp 17 in the case 11 passes, as in the first embodiment. The illumination light beam is simply transmitted to the display unit 16 so that the display unit 16 is illuminated and displayed.

Therefore, in this embodiment, as in each of the above-described embodiments, the packing member 18 which is a mounting component is provided with the cushioning protrusion 35 that suppresses the vibration of the display plate 13. Workability is enhanced.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, the protruding portion and the packing member vertically provided on the rear surface of the dial plate are formed. As for the shape of the cushioning projection, as shown in FIG. 9, for example, a pin-shaped projection 37 is formed on the rear surface of the dial plate 20, and the packing member 18 has a fitting hole 38 for the projection 37. It is also possible to form a bottom cylindrical cushioning protrusion 39 and abut this cushioning protrusion 39 on the front surface of the display plate 13 in a point contact state, and the shape and the number thereof may be appropriately selected. Further, the structure for fixing the case and the protective cover is not limited to screwing, and for example, as shown in FIG. 10, a flange portion is provided at the opening end of the case 11 having a front opening.
11A is formed, and the display plate 13 having the packing member 18 fitted to the flange 11A and the protective cover 27 are sequentially overlapped with each other, and the flange 11A and the overlapping end of the protective cover 27 are arranged. The case 11 may be caulked and fixed from the outside of the case 11 by the annular frame edge 40, and the fixing structure and the assembling structure of these components may be appropriately selected.

[Advantages of the Invention] The present invention has a display plate disposed on the front side of a case, and a look-back plate having a packing member fitted to the periphery of the display plate in front of the display plate. In a measuring device in which a transparent protective cover is provided on the front surface and the protective cover and the case are fixed to each other, a cushioning protrusion is formed on the rear surface of the packing member, and the cushioning protrusion is formed on the rear surface of the dial plate. By vertically extending a protruding portion that abuts against the front surface of the display plate through, by providing a receiving portion that holds the abutting portion of the display plate on the inner peripheral surface of the case,
It is possible to provide an antivibration device for a measuring instrument that can suppress the vibration of the display plate, reduce the number of parts, and simplify the assembling work.

[Brief description of drawings]

1 to 4 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a sectional view, FIG. 3 is an enlarged sectional view of an essential part, and FIG. FIG. 5 and FIG. 6 show a second embodiment of the present invention, FIG. 5 is an exploded perspective view with a part cut away, and FIG. 6 is an enlarged sectional view of the main part. 7th
FIGS. 8 and 9 show a third embodiment of the present invention, FIG. 7 is an enlarged sectional view of an essential part, FIG. 8 is an exploded perspective view of the essential part, and FIGS. 9 and 10 are modifications of the present invention. FIG. 9 is an exploded perspective view of an essential part, FIG. 10 is a sectional view of the essential part, and FIG. 11 is a sectional view of the essential part showing a conventional example. 11 …… Case 13 …… Display plate 13A …… Peripheral part (abutting part) 18 …… Packing member 20 …… Lookup plate 22,34,37 …… Projection part 23,35,39 …… Cushion projection 25 …… Projection piece (butt section) 26 …… Reception section 27 …… Protective cover

Claims (1)

[Scope of utility model registration request] 1. A display plate is provided on the front side of a case, and a dial plate is provided in front of the display plate with a packing member fitted around the periphery thereof, and a transparent plate is provided on the front surface of the case via the packing member. A protective cover is provided, and in the instrument device configured to fix the protective cover and the case, a cushioning projection is formed on the rear surface of the packing member, and the cushioning projection is formed on the rear surface of the dial plate. An antivibration device for a measuring instrument, characterized in that a projecting portion that abuts against a front surface of the display plate is vertically provided, and a receiving portion that holds the abutting portion of the display plate is provided on an inner peripheral surface of the case.