JPH0418154Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a vibration isolation support device for eliminating the influence of external vibrations applied to the main body of, for example, a car-mounted compact disc player.

Prior Art For products that require highly accurate adjustment or assembly, such as compact disc players,
Vibration applied as a disturbance is extremely disliked, and in particular, since constant vibration is unavoidable in power-mounted devices, various countermeasures have been taken to prevent vibration.

In a conventional device of this type, for example, the tips of the legs protruding from the bottom surface of the player main body are supported on the top surface of a housing made of an elastic material and are hollow inside, while the tips of the legs are supported on the bottom surface of the housing. A device is known in which vibration isolation is achieved by providing small holes so that the air in the cavity can circulate through the small holes in conjunction with the elastic deformation of the casing.

Problems with the Prior Art However, with such a conventional configuration, although external vibrations are absorbed at the top of the housing, the effect of eliminating vibrations is largely dependent on the air circulation through the small holes. However, the results were not as high as expected and were insufficient.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a cylindrical body made of an elastic material, one end of which is fixed to the vehicle side and the other end of which is attached to the player body.
A partition wall is formed to define two upper and lower chambers in the cylindrical body, a small hole is opened in the partition wall to generate fluid flow resistance, and the other end of the cylindrical body is connected to the player body. A support wall is formed that can be elastically deformed in the direction toward and away from the player and in the parallel direction, and a support shaft is provided in the center of the support wall on the side of the player body, and the free end of this support shaft is connected to the player body. It is characterized in that it is fixed and that the two upper and lower chambers in the cylindrical body are filled with an incompressible fluid.

(Function) According to the vibration isolating support device for the player main body according to this invention, when vibrations are transmitted from the vehicle side to the cylindrical body, the cylindrical body tries to vibrate, but the player main body tries to stay still due to inertia. Therefore, the cylindrical body is elastically deformed in the vertical and horizontal directions. Due to the elastic deformation of the cylindrical body, the incompressible fluid in the upper and lower chambers flows between the upper and lower chambers through the small holes. When the incompressible fluid passes through the small holes, resistance is generated, the incompressible fluid passes slowly, and the vibration of the support plate is alleviated. Moreover, since the fluid is incompressible, no force is generated that would cause the fluid to return to its original volume, and the vibration damping effect is significantly improved. Since the support plate is deformable in the vertical direction, vibrations from the vehicle side are attenuated before reaching the support plate, and vibrations of the cylindrical body are hardly propagated to the center of the support plate. Furthermore, since the player main body tries to maintain a stationary state due to inertia, vibrations of the cylindrical body in the left-right direction are absorbed by the left-right expansion and contraction of the support plate.

Embodiment An embodiment of this invention will be described below based on the drawings. FIG. 2 shows a case in which this invention is applied to a compact disc player, in which the player body 1 incorporates an optical scanning mechanism for a disc 2, etc., and is housed within an external frame 3. Furthermore, a vibration isolating support device 4 is attached to the corner portion 1A of the player main body portion 1.

FIG. 2 shows details of the vibration isolating support device 4. The housing 5 is made of an elastic material such as rubber, and the upper support surface 5A has a wave-like cross section. A recessed portion 5H is formed in. Moreover, the inside of the housing 5 has two upper and lower chambers R ₁ ,
The chamber is divided into R ₂ , and a small hole 7 is made in a partition plate 6 that partitions these chambers. In addition, both chambers
R ₁ and R ₂ are filled with an incompressible fluid 8 such as liquid paraffin.

In this way, the tips of the legs 9 projecting downward from the bottom surface 1B of the player main body 1 are inserted into and supported in the recesses 5H of the support surface 5A of the housing 5, and the bottom surface 5S of the housing 5 is supported. It is designed to be placed on the substrate 3A of the external frame 3. In addition,
In the figure, reference numeral 10 denotes a locking plate for locking and positioning the housing 5 on the player body 1;
1 is an introduction hole for filling the fluid 8;
2 is a plug that closes this introduction hole 11.

With this structure, when external vibrations are applied to the player body 1, the vibrations are first absorbed by the upper surface 5A of the housing 5, and then these 9 vibrations propagate through the fluid 8, Part of the small hole 7
Flows between the upper and lower chambers R ₁ and R ₂ via.

Effects of the Invention According to the vibration isolating support device for the player body according to the present invention, even if vibrations are transmitted from the vehicle to the fixed frame in the vertical and horizontal directions, the vibrations are prevented from being transmitted to the player body. parts are not disturbed by vibrations of the vehicle body. Therefore, there is no problem with playing music on the player while the vehicle is running, and it is possible to mount a CD player or the like in which vibration is prohibited in the vehicle.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of this invention, and FIG. 2 is a sectional view taken along the line - in FIG. 2, and FIG. 2 is a partial perspective view of a compact disc player to which this invention is applied. 1... Player main unit, 4... Anti-vibration support device,
5... Housing, 6... Partition plate, 7... Small hole, 8...
Fluid, 9...legs.

Claims (1)

[Scope of utility model registration request] In a cylindrical body made of an elastic material, one end of which is fixed to the vehicle side and the other end of which is attached to the player main body, there is formed a partition wall that divides the cylindrical body into two upper and lower chambers. A support wall is formed on the other end side of the cylindrical body and is elastically deformable in a direction toward and away from the player main body and in a direction parallel to the player main body by opening a small hole that generates fluid flow resistance. A support shaft is provided in the center of the wall on the side of the player body, the free end of this support shaft is fixed to the player body, and the upper and lower chambers in the cylindrical body are filled with an incompressible fluid. A vibration isolating support device for a player main body, characterized in that: