JPS60109827A - Vibration-absorbing tool - 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 [Technical Field] The present invention relates to a vibration absorber configured to confine inorganic particulate matter within a large number of cells.

[Prior art]

Conventionally, a viscoelastic polymer material such as paving pitch has been used as a vibration absorbing material. When external stress is applied to this material, the entanglement between the molecular side chains and the chain segments is extended, and when the stress is removed, vibration energy is transferred to heat due to intermolecular friction before the material returns to its original state due to a relaxation phenomenon. It is dissipated as energy and produces a vibration damping effect. Additionally, increasing the amount of material will also create a sound insulating effect due to the mass effect.

However, in the case of the above-mentioned polymeric viscoelastic substance, if the sound is not adhesively fixed to the damped object, the above-mentioned vibration damping effect and sound insulation effect will not be exhibited. Adhesion work is required. In addition, the viscoelastic polymer material has a large temperature characteristic, and has the disadvantage that the above-mentioned vibration damping effect and sound insulation effect occur only in a certain temperature range, and both effects are significantly reduced in other temperature ranges. In addition, minute vibration sounds (100 to 1000H) that humans feel uncomfortable.
Another disadvantage of 2) is that the vibration damping effect is small.

[Purpose of the invention]

In view of the above-mentioned conventional drawbacks, the present invention provides a vibration absorbing tool that does not require adhesive work to the object to be vibrated, is not controlled by temperature range, and has a vibration damping effect even for minute vibration sounds. That is.

[Structure of the invention]

A vibration absorber according to the present invention includes a bag member having a large number of cells arranged in a plane, and the cells are formed of a bottom wall and a side wall and are fixed so as to seal and cover an opening on the opposite side of the bottom wall. The vibration energy transmitted to the base body composed of the sheet member, the inorganic particulate matter sealed in the cell, the bag member and the sheet member is absorbed by the collision of the inorganic particulate matter in the cell. It was made in Niuni.

An example of the inorganic particulate matter in J3 is sand.

Clay 1 stone is preferred, and its particle size is 1 to 5000 microns. In this case, the finer the particle size, the better the particle size, since the larger the contact area between particles, the greater the energy absorption due to friction.

The bag member is preferably a thermoplastic resin such as vinyl chloride, polyethylene, or polyethylene, and the bag member has a plurality of flexible film-like cells. Since the above-mentioned inorganic particulate matter is enclosed in this cell, it has appropriate strength, and also has flexibility and moldability so that it can be shaped into a bag. Therefore, it can be film-like, and the thickness of the film is preferably 10 to 3000μ, but tl
The thinner the film is, the better it is from the perspective of avoiding transmission of vibrations from the object to the vibration target to the surface of the film. In addition, the size of the cell is determined by the size of the object to be damped, but in order for the inorganic particles to uniformly contact the object to be damped through the film, the object to be damped must be flat. If there is no slope, the cells may be large. However, if the object to be allocated is sloped or has a curved surface, the smaller the cells, the smaller the cells, and the cells do not all have to be the same size. In short, it is desirable that the size is such that the inorganic particles inside come into uniform contact with the object to be distributed.

Adhesion that secures the bag component and the seam that make up the base to one component
Although it is preferable to use the same material for ease of use,
It doesn't matter if it's a separate 8th grade.

The vibration absorbing device according to the present invention can be used, for example, when it is placed in close contact with the floor of a passenger compartment of an automobile to absorb vibrations inside a dormitory.

It can prevent noise from entering, and can also prevent vibrations and noise by being placed in close contact with the back of the engine cover (bonnet). In this case, the sheet member side of the vibration absorber may be brought into close contact, or the cell side may be brought into close contact.

(Effects of the Invention) As described above, the vibration absorbing device according to the present invention has a structure in which a plurality of cells in which inorganic particles are sealed are formed, and the cells are made of resin and arranged in a flat manner. As such, it is not necessarily necessary to adhesively fix it to the object to be allocated, and therefore, no adhesive work is required, and assembly to the object to be allocated is easy. In addition, unlike conventional polymeric viscoelastic materials, it does not affect temperature characteristics, and has a vibration damping effect over a wide temperature range.
It can produce sound effects. Further, it is possible to sufficiently exhibit a vibration damping effect even for minute vibration sounds (100 to 1000 H2) that are unpleasant to humans.

Further, since the vibration absorbing device of the present invention has a structure in which the openings of the cells are formed large, there is an effect that it is easy to insert the inorganic particulate portion.

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

FIG. 1 is a perspective view showing a state before sealing of a vibration absorber 10 according to an embodiment of the present invention. and inorganic particles 15 sealed within the cells 12. The opening 12a of the cell 12 is formed on the opposite side of the bottom wall 16 and at the upper end of the side wall 17 surrounded by the side wall 17.
The il 11 portion 12a is approximately the same size as the bottom surface of the cell 12 and is extremely large. The size of the cell is, for example, about length x width x depth = 40+nmx 2 On++nx 5mm.

When fixing the sheet member 13 and the bag member 14 in which a plurality of cells 12 are formed and each inorganic granule is contained inside, the sheet member 13 is attached to the upper end surface of the side wall 17 of the bag member 14 as shown in FIG. All you have to do is place it and shift it to the high frequency contact. Alternatively, as shown in FIG.
If the roller 18 is pressed and rotated from behind while being in close contact with the opening 12a of No. 2, the opening 12a will be sealed, and the inorganic particulate matter 15 can be contained.

In this case, if a covering member such as a carpet 19 is interposed between the molten resin 13' and the roller 18 and pressed by the roller 18, the molten resin 13- will act as an adhesive, and the presence of the carpet 19 will cause the molten resin 13- to act as an adhesive. This results in improved aesthetics and durability.

Incidentally, when molding the bag member 14 shown in the first figure, it is preferable to use a vacuum molding machine.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a vibration absorber according to the present invention;
FIG. 2 is a sectional view showing an example of a method of fixing members 13 and 14 of FIG. 1. DESCRIPTION OF SYMBOLS 10... Vibration absorber 11... Base 12... L-ru 13... Sheet member 14... Bag member 15... Inorganic particulate matter 16... Bottom wall 17...
Applicant: Toyota Kako Co., Ltd. Toyota Motor Corporation Agent: Patent attorney: Hirodo Okawa Patent attorney: Shudo Fujitani Patent attorney: Akio Maruyama

Claims (6)

[Claims] (1) a bag member having a large number of cells arranged in a planar manner, and a sheet member in which the cells are formed of a bottom wall and a side wall and are fixed to seal an opening on the opposite side of the bottom wall; The vibration energy transmitted to the base body constituted by the inorganic particulate matter sealed in the cell, the bag member, and the sheet member is absorbed by the collision of the inorganic particulate matter in the cell. A vibration absorber. (2) The vibration absorber according to claim 1, wherein the plurality of cells formed in the bag member all have the same size. (3) The vibration absorber according to claim 1, wherein the plurality of holes formed on the bag member have different sizes. (4) The vibration absorber according to claim 1, wherein the sheet member is made of a material different from that of the bag member. (5) The vibration absorber according to claim 1, wherein a covering member is fused to the outer surface of the sheet member. (6) The vibration absorber according to claim 1, wherein the opening of the cell has approximately the same size as the bottom wall of the cell.