JPS61104477A - On-vehicle acoustic device - Google Patents

Abstract

PURPOSE:To absorb the stress for protection of a mechanism part and also to increase the lifetime of an on-vehicle acoustic device, by using the 1st elastic member which supports the weight of a sound record/reproduction mechanism part and the 2nd elastic member which absorbs the vibrations given to said mechanism part. CONSTITUTION:A viscoelastic member 9 is made of rubber, etc. in a columnar form and serves as the 2nd elastic member provided between a mechanism part 2 and a chassis 5. A suspension mechanism part 13 is formed with the member 9 and a metallic coil spring 8 serving as the 1st elastic member and enclosing the member 9. The load of the part 2 is supported only by the spring 8 when a vehicle is at pause, and no stress is virtually applied to the member 9. Then the spring 8 and the member 9 are deformed in case the vehicle is vibrated back and forth and right and left to receive the lateral load A due to the sudden acceleration, sudden turning, etc. applied to the vehicle. Thus the horizontal stress is absorbed. While both spring 8 and member 9 also have deformation when the vertical load B is applied to the vehicle owing to an uneven road surface, etc. Thus the vertical stress is absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an audio device, particularly an audio device installed in an automobile.

[Conventional technology]

Conventionally, there has been a device of this type as shown in FIG.

In the figure, reference numeral 1 denotes a player which is an audio device, and this consists of a mechanism part 2 which is a recording and reproducing mechanism part and a housing 12 that houses the mechanism part 1. The housing 12 is made up of a chassis 5 which supports the mechanism part 2. And panel 4. It is composed of an upper cover 6. Further, reference numeral 7 denotes an elastic member, which is formed into a columnar shape using a viscoelastic material such as rubber, and the upper and lower ends of the elastic member 7 are a frame 3 that protrudes from the mechanism section 2. It is attached to the chassis 5 to support the weight of the mechanism section 2 and absorb vibrations thereon.

[Problems to be Solved by the Invention] 'In the above-mentioned conventional acoustic device, the viscoelastic member 7 serves as a suspension mechanism that supports the weight of the mechanism section 2 and also absorbs vibrations thereto. Crab, this 9
In the conventional device, the elastic member 7 is already subjected to stress due to the weight of the mechanism part 2 before receiving external force due to vibrations, etc., and therefore exhibits a sufficient damping effect when subjected to stress due to automobile vibration. The drawback was that it couldn't be done. In addition, the elastic member 7 has the disadvantage that its characteristics deteriorate over time in the environment of an automobile where the temperature changes rapidly, and the elastic member 7 no longer exhibits its effectiveness as a suspension mechanism.

The present invention was made to eliminate these problems with conventional devices, and is capable of absorbing stress caused by automobile vibrations, etc., and also prevents the suspension function from deteriorating over time even under the special environment inside the automobile. It is an object of the present invention to provide an in-vehicle audio device that can effectively protect a recording/playback mechanism without causing damage.

[Means for solving problems]

The present invention provides an in-vehicle audio device that includes a suspension mechanism section that includes a first elastic member for supporting the weight of a recording/playback mechanism section and a second elastic member for absorbing vibrations transmitted to the mechanism section. It is provided between the recording/playback mechanism section and the housing section.

[Effect]

In this invention, the weight of the recording/playback mechanism section is supported by the first elastic member and is hardly applied to the second elastic member in the initial state where no vibration is applied from the outside, and the weight of the recording/reproducing mechanism section is supported by the first elastic member and is hardly applied to the second elastic member. The above-mentioned weight is also applied to the second elastic member only when the weight is applied to the suspension mechanism, thereby extending the life of the suspension mechanism.

〔Example〕

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

1 to 4 are cross-sectional views showing an embodiment in which the present invention is applied to an optical player. In FIG. 0, the same reference numerals as in FIG. A viscoelastic member is a second elastic member that is formed into a cylindrical shape using a viscoelastic body such as rubber and is disposed between the mechanism part 2 and the chassis 5, and the viscoelastic member 9 or hollow part 9
a" is formed. Also, fixing posts 10a and 10b are embedded in the upper and lower ends of the viscoelastic member 9,
The post 10a at the upper end is fixed to the mechanism part 2, and the boss 10b at the lower end is fixed to the chassis 5.

8 is a first member disposed so as to surround the viscoelastic member 9;
This is a metal coil spring which is an elastic member, and this coil spring 8 and the viscoelastic member 9 form a suspension mechanism section 13.
is configured. Note that it is preferable that a plurality of three to four suspension mechanisms 13 be attached depending on the load of the mechanism section 2.

Next, the effects will be explained.

In the device of this embodiment, when the vehicle is in a stationary state, the load on the mechanism section 2 is supported only by the coil spring 8, and almost no stress is applied to the viscoelastic member 9 (see FIG. 2). As shown in FIG. 3, when a lateral load A is applied to the vehicle due to sudden acceleration or sudden turning, which causes it to sway back and forth or from side to side, the coil spring 8 and the viscoelastic member 9 are shaped as shown in the figure. , which absorbs the horizontal stress.

Further, as shown in Fig. 4, when a vertical load B is applied due to unevenness of the road surface, the coil spring 8 and the viscoelastic member 9 are deformed into the shape shown in the figure, thereby reducing the vertical stress. Absorbed.

In this way, in the device of this embodiment, the load acting on the player 1 is caused by the coil spring 8. The load is absorbed by the viscoelastic member 9 and can be prevented from being transmitted to the mechanism section 2, thereby effectively protecting the mechanism section 2. In addition, at this time, the weight of the mechanism part 2 is
Therefore, it is possible to prevent the function of the suspension mechanism section 13 from deteriorating over time even under the special environment inside the automobile.

Furthermore, since the viscoelastic member 9 is disposed within the coil spring 8 with its upper and lower ends fixed, the position of the coil spring 8 can be regulated without being fixed, and the space can be used effectively, making the device compact. can be converted into

In the above embodiment, the suspension mechanism section 13 is provided perpendicularly to the elastic member mounting surface of the mechanism section 2. However, in the present invention, the structure shown in FIG. As shown, the suspension mechanism section 13 can be mounted in an inclined state with respect to the elastic member mounting surface of the mechanism section 2 of the player 1, and in this way, the above-mentioned stress can be absorbed effectively.

Further, in the above embodiment, a case was described in which the present invention was applied to a disc player, but the present invention is not limited to this, but can also be applied to a tape recorder for use in a car, and is effective in improving wow and flutter performance when driving a car.

〔Effect of the invention〕

As described above, according to the in-vehicle audio device according to the present invention, the first elastic member for supporting the weight of the recording and reproducing mechanism section;
Since the second elastic member is provided to absorb vibrations to the recording and playback mechanism, the stress on the recording and playback mechanism can be effectively absorbed and the mechanism can be protected. In a stationary state, the weight of the recording and reproducing mechanism section does not act on the second elastic member, which has the effect of extending the life of the suspension mechanism section.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an in-vehicle audio device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIGS. 3 and 4 explain the operation of the above embodiment. A cross-sectional view for
FIG. 5 is a sectional view showing a modification of the above embodiment, and FIG. 6 is a sectional view of a conventional vehicle-mounted audio device. DESCRIPTION OF SYMBOLS 1... Vehicle-mounted audio device, 2... Mechanism part (recording and playback mechanism part), 8... Coil spring (-first elastic member)
, 9... Viscoelastic member (second elastic member), 9a... Hollow part, 10a, 10b... Fixing post, 12...
Housing part, 13... Suspension mechanism part.

Claims (4)

[Claims] (1) An in-vehicle audio device that is mounted on a car and includes a recording and reproducing mechanism section and a casing section that houses the mechanism section, including a first elastic member for supporting the weight of the recording and reproducing mechanism section; An in-vehicle audio device characterized in that a suspension mechanism section including a second elastic member for absorbing vibrations transmitted to the recording/playback mechanism section is disposed between the recording/playback mechanism section and the housing section. (2) The second elastic member is formed of rubber into a columnar shape having a hollow portion inside, and furthermore, the lower end portions are fixed to the recording and playback mechanism section and the housing section, respectively, and the second elastic member
2. The vehicle-mounted acoustic device according to claim 1, wherein the elastic member is a metal coil spring arranged to surround the second elastic member. (3) Each of the second elastic members has one end connected to the second elastic member.
Claim 1, characterized in that the elastic member is provided with upper and lower fixing posts embedded in the upper and lower ends of the elastic member and having the other ends fixed to the recording and reproducing mechanism section and the casing section, respectively. Or the in-vehicle audio device according to item 2. (4) According to any one of claims 1 to 3, wherein the first and second elastic members are disposed obliquely between the recording and reproducing mechanism section and the casing section. The in-vehicle audio device described.