JPS63502383A - elastic support structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] elastic support structure The present invention relates to a resilient support structure for isolating mechanical vibrations. This elastic support The holder is particularly suitable for record players, compact disc players and tape disc players. This applies to acoustic devices such as Tsuki, but does not exclude its application to other devices. There isn't.

Below, the present invention will be explained using a record player (turntable deck) as a main example. Let me explain.

The turntable and pickup arm are mounted on the board, and the board is elastic. The structure is inserted into the casing via the support, and is suitable for record players. Generally adopted in common. The most common such elastic supports These are used in combination of three, each for level adjustment of the board. It has a screw and a coil spring. This type of structure is relatively complex. Although it is expensive, the low frequency that can be transmitted through the parts of the furniture on which the deck is placed is The desired effect cannot be achieved in insulating wave vibrations.

The present invention provides good vibration isolation in acoustic equipment and is inexpensive to manufacture and assemble by the user. The object of the present invention is to provide an elastic support structure that can be used for various purposes.

The object of the invention is that the first element provides acoustic vibration isolation to the second element. an elastic support structure used for mounting with said second member; The periphery is supported by a bar (element) or a member fixed to the member. an elastic diaphragm erected such that the first element is fixed; The diaphragm is integral with the central post and is used for fixing and leveling. is provided to extend through the post and diaphragm for passing a screw therethrough. The present invention provides a resilient support structure having a central hole.

In a preferred embodiment of the invention, a turntable, the turntable and The pickup arm is mounted integrally from the post and diaphragm to which the board is attached. The skirt, which hangs down and acts as the legs, and the metal ring are fixed to the casing. It is connected to the periphery of the diaphragm for this purpose.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Figure 1 shows an embodiment of the present invention installed in a record player (turntable deck). FIG. 2 is a cross-sectional view showing the state in which it is attached, and FIG. 2 is a plan view of FIG. 1. FIG. 3 is a sectional view showing an example of desirable dimensions in the mounted state.

As shown in FIG. 1, the elastic support 10 is formed by integrally molding silicone rubber. a circular diaphragm 12, a cylindrical post 14, and a cylindrical skirt 16. It is equipped with

A metal ring 18 is fixed to the periphery of the diaphragm 12 and the skirt 16 is attached to the casing 20 so that it provides elastic support to the casing 20. used to do. The turntable and pickup arm are mounted on the board. The door 22 is supported by the post 14. Detsuki (player) has a board 22 and the components on the board at a distance around the center of gravity of the assembly. Supports with a similar structure are provided at three locations. Screws 24 and 24 at each support point A screw nut 26 may be used for leveling the board 22. upper washer 28 and lower washer 30 are not fixed within the support structure but are attached to the diaphragm. Prevent the ram from moving excessively.

In use, the skirt 16 can be pushed through the furniture or other object on which the deck is placed. to insulate external noise or shock from being transmitted to the casing 20, while Fram 12 and posts 14 resiliently support board 22 within casing 20 . The central part of the diaphragm 12 receives a tensile force, and the board 22 and casing 20 It will be understood that the relative movement with respect to the center portion is suppressed by the bending of the central portion.

The insulation performance provided by this support structure depends on the geometry and dimensions and the material. Determined in relation to elasticity.

For the player example discussed here, the dimensions (in m+++) are shown in Figure 3. Shore hardness of 45 is used for acoustic insulation, especially when the spring system resonates. It has been found that the insulation is excellent at low frequencies of about 100 Hz, which are easy to conduct. This implementation A suitable material for the example is General Electric Grade 4 Genera Le Purpose (G general Electric Grade 4 Gener It is a silicone rubber manufactured by Al Purpose. Pure silicone rubber will not deteriorate over time It is preferred because it has excellent resistance to corrosion. Other elastic materials may also be used as appropriate. For example, filled silicone rubber, butyl rubber, etc. can be mentioned.

The principles of the invention may also be applied in other forms. For example, one part is attached to another part. On the other hand, if it is attached elastically without the need for supporting legs, the above-mentioned vertical The lower skirt can be removed. This form of the invention The disk assembly is significantly lighter and the size of the mounting location is smaller. Therefore, it is considered useful for compact disc players.

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Claims (1)

[Claims] 1. The first element is attached to the second element with acoustic vibration isolation. a resilient support structure used to support said second member (element); or an elastic diaphragm whose periphery is supported by a member fixed to the member. and integrally with an upright central post such that the first element is fixed. The diaphragm has been adjusted to and a central hole extending through the post and the diaphragm. Elastic support structure. 2. The front member is designed to act as an elastic support for the second member during use. Claim 1 further comprising a skirt integrally depending from the diaphragm. Support structure as described in Section. 3. Attach a knot to the peripheral edge of the diaphragm so as to be located outward from the skirt. The support according to claim 2, further comprising a mating or fixed inelastic ring. Holding structure. 4 The diaphragm and the members integrated therewith have a Shore hardness of 30-60. The support according to any one of claims 1 to 3, which is made of a material within the range of Holding structure. 5. The diaphragm and the member integrated therewith are made of silicone rubber. A support structure according to scope 4. 6 Casing and turntable mounting board (platterboard) ) and a plurality of support structures according to claim 1. (record turntable) assembly, wherein each of the support structures includes the A diaphragm whose periphery is fixed to the casing and a tag mounted on the post. and a turntable mounting board, each support structure having a turntable mounting board. a movable flange surface for supporting the mounting board and the diaphragm respectively; a record plate having a threaded fastening member extending through said hole to form a record plate; layer assembly. 7 Center of gravity of the turntable mounting board and the parts supported on the board Claim 6, wherein the support structure is provided at three locations at equal distances around the The assembly described in Section.