JPS6316491A - Disk reproducing device for vehicle - Google Patents

Abstract

PURPOSE:To prevent vibration of an assembly by supporting the assembly on a housing via a substrate spring supporting the assembly and a damper. CONSTITUTION:A disk reproducing device is stored and fixed in a trunk, for example, of a vehicle. The vibration of the vehicle, i.e., the housing 1 are absorbed by a spring 9 and therefore not easily transmitted to a substrate 3 (assembly 4) hung from the spring 9. This spring 9 is set at a position higher than the substrate 3 and the assembly 4 is set by a stud 5 at a position lower than the substrate 3 by a prescribed distance (length). Furthermore, an upper face plate 11 of a damper 10 which is set lower than the substrate 3 and at a position comparatively close to a notched part 8 that locks the spring 9 is also set at a position higher than a horizontal plane G including the centroid position of the assembly 4. Thus low-centroid constitution is obtained and therefore the assembly 4 secures its higher stable posture to disturbance like vibration, etc. and not easily vibrated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle disk, typified by a vehicle navigation device that displays map information recorded on the disk together with the vehicle's current location to guide the vehicle to a predetermined destination. Regarding a playback device.

[Summary of the invention]

In the present invention, the assembly is supported by the casing via a spring and a damper.

[Conventional technology]

In recent years, vehicle navigation devices that display map information recorded on a so-called CD-ROM together with the vehicle's current location on a CRT or the like have been actively researched, and some have been commercialized. CD
- Since the information is digitally recorded in the ROM, even if the vehicle vibrates while driving, it is possible to correct the resulting errors. So CD-R
In a conventional vehicle navigation device using OM, an assembly of mechanisms such as a motor that rotates a CD-ROM and a pickup that reproduces information from the CD-ROM is required.
Vibration was prevented by supporting the housing via a spring.

[Problem that the invention seeks to solve]

However, simply supporting the assembly with springs has the disadvantage that it takes time for vibrations to dampen. Therefore, it has been difficult to apply such a mechanism as is to a vehicle navigation system that uses video discs instead of CDs. A video signal (map information) as an analog signal is frequency-modulated and recorded on the Kedashi video disc, and the track on which this signal is recorded is repeatedly traced by a pickup to reproduce the predetermined map information (still reproduction) ) If the pickup or disc vibrates, the displayed image (map) will be disturbed, so it is necessary to prevent vibration as much as possible.

[Means for solving problems]

The present invention relates to a disc reproducing device for a vehicle, which includes an assembly having at least a means for rotating a disc and a pickup for reproducing information from the disc, a housing housing the assembly, and a spring arranged to suspend the assembly on the housing. and a damper provided between the board and the casing.

[Effect]

The assembly is suspended from the casing via a spring, and at the same time is supported by the casing via a damper.

〔Example〕

FIG. 1 is a side view of the vehicle disc playback device of the present invention. In the figure, reference numeral 1 denotes a housing, which houses various mechanisms inside. Reference numeral 2 denotes a reinforcing plate, whose ends are fixed to the side and bottom surfaces of the casing 1 by welding or the like to reinforce the casing 1.

3 is a board such as a chassis, and an assembly 4 is installed below it.
is fixed via a predetermined number (for example, three) of studs 5. One end of the stud 5 is caulked to the board 3, and the other end is screwed to the assembly 4. Assembly 4 is
It has a built-in spindle motor that rotates and supports the video disc on which map information is recorded, a pickup (including focus and tracking actuators, etc.) that is moved in the radial direction of the video disc to reproduce information from the video disc, etc. (None shown).

Reference numeral 6 denotes a protrusion provided at a relatively upper portion of the housing 1, and has a notch 7. 8 is a notch provided at the end of the substrate 3. A coil spring 9 is stretched between the notch 7 and the notch 8, and pulls the board 3 upward. 10 is an air damper, and a top plate 11 made of metal or the like.
and the bottom plate 12 are baked on the drawing part 13 made of rubber or the like,
Fixed. A sealed chamber 14 is provided inside the drawing section 13, and the lower part of the chamber 14 is closed off by a plate 15 made of metal or the like. A hole 16 is formed in the center of the plate 15,
Air circulates between the inside and outside of the chamber 14. 17 and 1
Reference numeral 8 denotes a screw, which fixes the upper surface portion 11 to the lower surface of the substrate 3 and the lower surface portion 12 to the upper surface of the reinforcing plate 18, respectively.

The springs 9 and dampers 10 are provided at each of the four corners of the substrate 3.

A device having such a configuration is housed in the trunk of a vehicle, for example,
Fixed. Even if the vehicle, and therefore the housing 1, vibrates, this vibration is absorbed by the spring 9.
It is difficult for the signal to be transmitted to the board 3 (assembly 4) which is suspended by the board 3 (assembly 4).

Further, the spring 9 is arranged above the board 3, and the assembly 4 is arranged below the board 3 by a predetermined distance (its length) by means of the stud 5. Furthermore, the top plate 11 of the damper 10, which is located below the substrate 3 and relatively close to the notch 8 that locks the spring 9, is also located above the horizontal plane G that includes the center of gravity of the assembly 4. .

In other words, these are configured with a low center of gravity. Therefore, from this, the assembly 4 has a higher limit of maintaining a stable posture against external disturbances such as vibrations, and has a structure that is difficult to vibrate.

On the other hand, when the board 3 (assembly 4) vibrates, the damper 1
The companding section 13 of 0 is compressed or expanded. As a result, air within the chamber 14 flows out through the holes 16, and outside air flows into the chamber 14 through the holes 16. Therefore, the vibration of the substrate 3 (assembly 4) is damped.

When removing the assembly 4, by removing the screw 17 and removing the spring 9 from the notch 7 or 8, the assembly 4 fixed to the board 3 can be easily pulled out from the inside of the housing 1. For assembly, the above procedure is reversed. Therefore, the workability of assembling or disassembling is improved.

Note that the present invention is not limited to vehicle navigation devices using video discs, but can be applied to other vehicle disc playback devices.

〔effect〕

As described above, the present invention provides a disc playback device for a vehicle.
An assembly having at least a means for rotating a disc and a pickup for reproducing information from the disc, and a housing housing the assembly.

Since the spring arranged to suspend the assembly on the casing and the damper provided between the board and the casing are provided, vibration of the assembly can be effectively prevented.

[Brief explanation of the drawing]

FIG. 1 is a side view of the vehicle disc playback device of the present invention. 1... Housing 2... Reinforcement plate 3... Board 4... Assembly 5... Stud 6... Projection 7.8... Notch 9... Spring 10... Damper 11...Top plate 12...Bottom plate 13...Companding section 14...Chamber 15...Plate 16...Hole 17.18...Screw or more

Claims (1)

[Claims] an assembly having at least a means for rotating a disk and a pickup for reproducing information from the disk;
A vehicle disc comprising: a housing that houses the assembly; a spring arranged to suspend the assembly from the housing; and a damper provided between the substrate and the housing. playback device.