KR200287905Y1 - Vibration damping structure - Google Patents

Abstract

The present invention provides a vibration damping structure for reducing noise or vibration, and the vibration damping structure provided by the present invention includes a vibration damper coating and a vibration damping agent comprising a butyl synthetic rubber, an acrylic resin, and a filler as a component. It may include a plate member having a coating on at least one side. The coating may be coated on the plate member through a brush, roller, spray or the like in a liquid state. Such a vibration damping structure has a vibration reduction effect of more than two times even with a thinner thickness than the conventional vibration damping sheet, and is strong in impact, etc., and the vibration damping agent coating process is simple and convenient even in a curved shape.

Description

Vibration damping structure {VIBRATION DAMPING STRUCTURE}

The present invention relates to a vibration damping structure for reducing noise and vibration, and more particularly, by coating a vibration damping agent containing butyl synthetic rubber, acrylic resin and filler on a plate member such as iron plate or PVC, The present invention relates to a vibration damping structure that is strong in impact, impact, and the like and makes the vibration damper coating process simple and convenient for curved shapes.

In general, a machine such as an automobile or a ship is used by attaching a vibration damping sheet in the form of an adhesive sheet to a part requiring vibration control in order to give a vibration damping ability to reduce vibration of a motor or an engine. Typically, the vibration damping sheet is in the form of an adhesive itself, an adhesive attached to both surfaces, or a pressure-sensitive sheet (hereinafter referred to as a PA sheet). Such a damping sheet is mainly used to reduce vibrations generated during driving by being attached to an automobile body or the like to improve riding comfort.

Referring to FIG. 1, which shows a damping sheet in the form of a conventional PA sheet, the PA sheet 10 is laminated with an adhesive 14 to improve adhesion to an external material on an asphalt sheet 12 having a damping ability. And, it has a structure to which the release paper 16 is attached so that attachment and detachment are easy. In actual practice, for example, when attaching the PA sheet 10 to the inside of the body of a vehicle, the worker first removes the release paper 16 and then attaches the adhesive 14 to a corresponding attachment portion inside the body of the vehicle. Then, the operator presses and attaches the asphalt sheet 12 by hand, and then passes through the middle and top ovens so that the PA sheet 10 is completely adhered to the inside of the body of the vehicle so as to be more firmly attached. do.

However, the conventional adhesive or adhesive vibration damping sheet such as the PA sheet 10 cannot be mechanically automated when it is installed on a severely curved area, such as inside an automobile, so it must be relying on manual operation by an operator. There is an inconvenience. In addition, when the shape of the part to which the vibration damping sheet is to be attached is complicated or the operator is not skilled, the operator may not pressurize the PA sheet with sufficient pressure. 10) Frequently, problems such as falling or sagging occur. In addition, such conventional adhesive or adhesive vibration damping sheets need to be constructed by a relatively skilled technician, require additional processing such as applying heat during construction, and have a relatively large size. Therefore, it is difficult to apply to non-steel plate and difficult to install inside small irregular shaped case, so it can be applied to products directly used by consumers in home or work such as computer body case, home appliance or elevator. There is a problem that the application field is limited in that there is no.

As described above, the conventional adhesive type vibration damping sheet has various problems such as insufficient vibration damping performance, inconvenient construction, and not stable.

The present invention is to improve the vibration damping structure by the conventional vibration damping sheet having the above-mentioned problems, to have a relatively small and large vibration damping performance, easy construction, and to provide a reliable vibration damping structure.

1 is a schematic view showing a portion of a cross section of a conventional adhesive vibration damping sheet.

Figure 2 is a schematic diagram illustrating a portion of a cross section of the damping structure according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: conventional pressure-sensitive vibration damping sheet 12: asphalt sheet

14: adhesive 16: release paper

20: damping structure 22: plate member

24: vibration damper coating layer

In order to achieve the above object, the present invention provides a vibration suppression structure for reducing noise and vibration, the vibration suppression structure, and a vibration damper coating formed of a combination of butyl synthetic rubber, acrylic resin and filler as a component; It may include a plate member having at least one surface of the vibration damper coating. This damping structure has a vibration reduction effect of more than twice even with a thinner thickness than the conventional damping sheet. Here, the vibration damping agent is coated and dried on the plate member in a liquid state having a viscosity of about 50 to 70 pas and a solid content of about 60 to 90%, and the specific gravity of the vibration damping agent after drying is preferably about 1.2 to 2.0. . In addition, in a preferred embodiment according to the present invention, a primer for adding the adhesion of the plate member and the vibration damper may be further included between the plate member and the vibration damper coating. In addition, since the liquid damping agent may be coated on the plate member by a brush, a roller, or a spray, the operation may be easy and may be manufactured by an automated process rather than by hand.

Referring to the present invention having such a configuration in more detail as follows.

2 illustrates a damping structure 20 for reducing vibration in accordance with a preferred embodiment of the present invention. The vibration damping structure 20 includes a double layer of a plate member 22 such as an iron plate or PVC, and a vibration damper coating layer 24 attached thereto. The vibration damper coating layer 24 may be formed of a vibration damper formed by combining butyl synthetic rubber, acrylic resin, and filler as a component. The butyl synthetic rubber may impart flexibility and elasticity to the vibration damper coating, and the acrylic resin may impart strength. Therefore, it is also excellent in weather resistance and impact resistance with a damping and a sound absorption effect. In addition, even when the shape of the plate member, which is the basis of the vibration damper coating layer, is deformed from the original shape due to impact or other unexpected circumstances during use, the vibration damper coating is hardly cracked or broken.

In addition, in a preferred embodiment according to the present invention, the damping agent constituting the coating may be applied on the plate member 22 in a liquid state. In this case, it is preferable that the butyl synthetic rubber, the acrylic resin and the filler constituting the vibration damper have a viscosity of about 50 to 70 pas and a solid concentration of about 60 to 90%. The concentration and viscosity of the solid content can be varied according to the request of the orderer according to the coating film characteristics. Such a vibration damper in a liquid state may be applied to the plate member using a brush, a roller, or a spray. Therefore, even when the plate member has any complicated shape, the vibration damper can be easily coated. After coating, the process of curing the vibration damper may proceed for about 3 weeks. After this period, the specific gravity after drying of the vibration damper is preferably about 1.2 to 2.0.

In addition, in a preferred embodiment according to the present invention, a primer for adding the adhesion of the plate member and the vibration damper may be further included between the plate member and the vibration damper coating. In addition, since the liquid damping agent may be coated on the plate member by a brush, a roller, or a spray, the operation may be easy and may be manufactured by an automated process rather than by hand. The vibration damping structure according to the present invention may be manufactured by working in a manufacturing plant, but may be post-installed where a soundproof dustproof is required, such as an existing product or a wall surface.

In FIG. 2, the vibration damper coating layer 24 is disposed only on one surface of the plate member 22, but may be disposed on both surfaces. In addition, the plate member 22 is shown in the planar form only, but this is merely to simplify the description, the present invention is not limited only to this planar plate member 22. The plate member 22 according to the present invention may be a concave or convex curved surface, or may be a plate member constituting an angled corner or any other shape. In addition, the plate member 22 may be in the form of an iron plate, but since a separate pressurization and / or heating process is not required when coating the vibration damper, the plate member 22 may be made of a material such as PVC or other relatively weak plastic, and concrete It may also consist of materials such as paper and cloth.

Further, the plate member 22 may be a member in the form of a general material before making a product, or may be a member in the form of a component, such as a computer body case or an electronic case, that is formed before assembly. Therefore, the vibration damping structure according to the present invention can be applied to a case of various electronic products, including an automobile body, and can be applied to all kinds of furniture such as a wardrobe, a bed case, and a file box. In other words, if it is used where soundproof dustproof is required, the vibration suppression structure according to the present invention can be applied.

Table 1 compares the damping performance of the damping agent coating according to the present invention and the damping performance of the conventional damping sheet and steel sheet. Table 1 is a test result measured on the basis of the iron plate. Referring to Table 1, it can be seen that the damping agent coating according to the present invention is about two times the damping effect, although the thickness is less than that of the conventional damping sheet. Therefore, it is evident that the vibration damping structure according to the present invention can be applied to various applications that cannot be applied to a conventional vibration damping sheet, that is, a small size and a better vibration damping performance, such as a computer body or an elevator wall. It is also evident that a greater damping effect can be expected when the damping sheet is to be applied.

Item Thickness (mm) Damping effect (dB) iron plate One 0 Conventional vibration damping sheet 2.5 12 to 17 Vibration coating in this article 2 24 to 30

As described above, the vibration damping plate member according to a preferred embodiment of the present invention is formed by coating a vibration damping layer containing butyl synthetic rubber, an acrylic resin and a filler on a plate member such as iron plate or PVC, excellent vibration damping performance Do. In addition, since the vibration damper coating can be adhered to the plate member flexibly and at the same time, the vibration damper coating hardly falls off due to impact or vibration, and does not easily be scratched or peeled off.

In addition, the vibration damping plate member according to the present invention, since the vibration damper coating can be applied in a liquid state and manufactured, there is a convenience that the plate member can be easily installed even in the form of a flat or curved surface or irregularities severely curved. In this case, the plate member may be configured by selecting from a variety of materials such as iron, polyvinyl chloride (PVC), acrylic, fiber reinforced plastics (FRP), cement, gypsum board, plywood, etc., which can be coated with a vibration damper according to the present invention It is because a component is sufficient.

In addition, the vibration damping agent may be provided with a vibration damping plate member in a comfortable working environment because the aqueous polymer is the main component and does not use an organic solvent. The anti-vibration coating is aqueous, which can be diluted with water, but the dried coating itself exhibits strong water resistance to water, and also has excellent weather resistance, such as impact or abrasion.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made within the spirit and scope of the present invention, and thus such changes or modifications are intended to be provided with the accompanying utility model. It will have to fall within the scope of the registration request.

Claims (5)

In the vibration suppression structure for reducing noise or vibration, A vibration damper coating comprising a butyl synthetic rubber, an acrylic resin and a filler as a component; Plate member having at least one surface of the vibration damper coating It characterized in that it comprises a damping structure. The vibration damper of claim 1, wherein the vibration damper is coated on the plate member in a liquid state having a viscosity of about 50 to 70 pas and a solid content of about 60 to 90%, and after drying, the specific gravity of the vibration damper is about 1.2 to 2.0. The damping structure characterized by the above-mentioned. The vibration damping structure according to claim 2, further comprising a primer between the plate member and the vibration damper coating to add adhesion between the plate member and the vibration damper. 3. The vibration damping structure according to claim 2, wherein the liquid vibration damper is coated and dried on at least one surface of the plate member by a brush, a roller, or a spray. The method of claim 1, wherein the plate member comprises a flat, curved or uneven shape, characterized in that consisting of one or more of the material selected from iron, PVC, acrylic, FRP, cement, gypsum board, plywood, vibration damping rescue.