JP4810263B2 - Silencer - Google Patents

Description

  The present invention relates to a muffler, and more particularly, for effectively suppressing noise generated during use, such as excretion sound in a portable toilet, washing machine washing sound, or kitchen sink washing water sound. It relates to a silencer.

  For example, for those who can leave the bed or bed, such as hospitalized patients and elderly bedridden people in general households, but are unable or impossible to move to the toilet, a portable toilet that is easily used indoors is a necessity. It is.

  Portable toilets of various materials such as metal or plastic have been developed, but the inner bucket for storing and discarding excreta is rich in corrosion resistance and is attached to the toilet body. On the other hand, since it is necessary to satisfy various conditions such as being detachable and easy to handle, the structure is generally hard, thin and lightweight (see, for example, Patent Document 1).

JP 2005-13503 A

  However, with such a hard, thin and light structure, the excretion sound generated during excretion is relatively loud and easily resonates, and the main place of use of the portable toilet is the side of a bed in a hospital room or the bed of a general household. For those who are physically handicapped such as inpatients and elderly people who are forced to use portable toilets because they are close, there is more than their imagination in feelings and shame about excretion to the surroundings, and it is very mental The fact is that we are forced to suffer. For this reason, the simplicity, which is an advantage of the portable toilet, is not fully utilized, and there has been a strong demand for sound reduction measures against excretion sounds.

  Such noise reduction measures are not limited to portable toilets, but have been similarly demanded for devices that are restricted from being used in silence such as at night, such as washing sounds from washing machines and washing water from kitchen sinks.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to reduce noise generated during use that leaks to the surroundings by a vibration control function that suppresses vibrations of a silencing object such as a portable toilet. An object of the present invention is to provide a muffler that can effectively reduce noise reduction and that is easy to attach to and detach from a muffler and easy to handle.

In order to achieve this object, the silencer of the present invention is a silencer that reduces the generated sound by suppressing the vibration of the silencer object by being mounted on the wall of the silencer object, and is plastically deformable. Ri Do from a rubber composition having a self-adhesive, characterized in that it is a capable tightly contact possible and repeatedly detachable structure relative to the wall surface of the silencer object.

The following configuration is adopted as a preferred embodiment.
(1) The rubber composition is a rubber composition based on a viscoelastic material.

(2) The viscoelastic material is an uncrosslinked rubber-based material.

(3) The rubber composition is blended with polyethylene glycol.

(4) The rubber composition is composed of tourmaline powder.

(5) The rubber composition is formed by blending ceramic powder.

(6) The rubber composition is blended with sulfur-free factice.

(7) The rubber composition is blended with a hardness adjusting agent for adjusting the hardness.

(8) The rubber composition, by hardness adjusted by the hardness modifier is formed in a easy sheet attached to the planar wall of the silencer object.

(9) The rubber composition, by hardness adjusted by the hardness modifier is formed in a easy putty attached to non-planar wall surface of the uneven surface or a curved surface or the like of the silencer object.

(10) The rubber composition is formulated with a specific gravity increasing agent for increasing the specific gravity.

(11) The rubber composition includes a fragrance and has a function as a fragrance.

(12) The rubber composition contains a deodorant.

(13) The rubber composition has an antibacterial and deodorizing function by blending plant dry distillation components.

(14) The rubber composition is provided with a photocatalyst and has an antibacterial / deodorant function.

(15) The object to be muffled is a portable toilet made of synthetic resin, and is excreted by the vibration control action when using the portable toilet by being held in close contact with the outer peripheral wall surface of the portable toilet so as to be peelable by self-adhesive force. Is reduced.

According to the present invention, Ri Do from a rubber composition having a self-adhesive plastically deformable, since there is a capable tightly contact possible and repeatedly detachable structure relative to the wall surface of the silencer object, below Excellent effects as listed above can be obtained, and the vibration-suppressing action that suppresses the vibration of sound-deadening objects such as portable toilets can effectively reduce the noise generated during use that leaks to the surroundings. Therefore, it is possible to provide a muffler that can be easily attached to and detached from and easily handled.

(A) Since it has self-adhesiveness, it is attached to the outer wall surface of the sound-deadening object, for example, the inner bucket of a portable toilet with self-adhesive force, thereby suppressing the vibration of the inner bucket (damping action) and excretion It is possible to effectively suppress the excretion sound generated during use.

(B) Since it is plastically deformable, it can be freely deformed, and it can always be in close contact with the wall surface, regardless of the shape or properties of the wall surface of the silencer. Can be fully exhibited.

  That is, even if the wall surface of the sound deadening object is a curved surface that is not a flat surface, or an uneven surface that is not a smooth surface and has many unevennesses, the silencer of the present invention faithfully follows the wall surface. It can be stuck and held in close contact with no gap, and integrated with the object to be silenced. Thereby, the vibration damping action inherent to the silencer can be sufficiently exerted.

(C) Since it has self-adhesiveness, it can be repeatedly attached to and detached from the object to be silenced, and is versatile.

(D) Since it is a rubber composition, the hardness of the physical properties of the rubber composition can be adjusted as appropriate by blending the composition material, and the silencer has the optimum physical properties and configuration for the wall surface of the sound deadening object. Can be obtained.

  For example, when the rubber composition is made into a hard fabric with a hardness adjusting agent, a sheet-like silencer that can be easily mounted on a planar wall surface of the object to be silenced can be obtained. On the other hand, the rubber composition is made into a soft cloth with a hardness adjusting agent, thereby providing a putty-like silencing device that can be easily attached to a non-planar wall surface such as an uneven surface or a curved surface of a silencing object. Can do.

(E) Since it is made of a rubber composition that is insoluble in water, it is possible to easily wash away dirt on the surface with water, and it is possible to easily return to the initial state by washing with water, and to maintain a clean and hygienic state. be able to.

(F) Various functions such as fragrance, deodorization, antibacterial, etc. for purposes and applications by appropriately blending the rubber composition with photocatalysts such as fragrances, plant dry distillation components (terpenes, catechins, etc.) and titanium oxide. It can be added accordingly.

  Hereinafter, embodiments of the present invention will be described in detail.

  The silencer according to the present invention is detachably attached to an appropriate object to be silenced so as to suppress the vibration of the object to be silenced (damping action) and effectively reduce the noise generated during use that leaks to the surroundings. Specifically, it is optimal for sound reduction of portable toilets used in rooms such as hospitals and general homes.

  The silencer of the present invention comprises a rubber composition that is easily plastically deformed by a human hand or finger. This rubber composition is based on a viscoelastic material, and an uncrosslinked rubber-based material is preferably used as the viscoelastic material.

  Examples of rubber-based substrates include IIR (butyl rubber), IR (isoprene rubber), SBR (styrene-butadiene rubber), BR (butadiene rubber), EPM (ethylene propylene rubber), and EPDM (ethylene propylene diene ternary co-polymer). Coalescence), acrylic rubber, polyisobutylene, NR (natural rubber), and the like. These may be used alone, but are preferably used in combination of two or more. Furthermore, it may be combined with other base materials such as a styrene resin, an olefin resin, an ethylene-vinyl acetate resin, and a vinyl chloride resin as long as the plastic deformability of the rubber composition is not impaired.

  The rubber composition includes process oil, liquid paraffin, rapeseed oil, cottonseed oil, softening agents such as sub (factis), heavy calcium carbonate, light calcium carbonate, silica, diatomaceous earth, magnesium oxide, talc, Fillers such as sericite, quartz powder, montmorillonite, scallops, oysters, shijimi shell powder, organic hollow particles, inorganic hollow particles and organic / inorganic pigments, coloring materials such as dyes, fragrances, stabilizers, lubricants, antioxidants Other additives such as an agent, an ultraviolet absorber, and an antifungal agent can be arbitrarily used as appropriate.

  For example, when polyethylene glycol is blended in the rubber composition, the adhesive action on the skin of the muffler is suppressed, and the workability with hands and fingers is improved.

  That is, when the silencer is made into a putty-like soft dough and kneaded by hand into an arbitrary shape, the silencer adheres to the human skin due to the self-adhesiveness of the rubber composition itself, and workability is improved. Although it may worsen, by adding polyethylene glycol as an additive, this polyethylene glycol component bleeds to the surface of the rubber composition, and the adhesive action of the rubber composition on human skin is effectively suppressed. As a result, workability with the hands and fingers is improved.

  The polyethylene glycol to be blended is preferably liquid at normal temperature, and those having a molecular weight of 200 to 100 are preferably used. Moreover, the compounding quantity to the rubber composition part of polyethyleneglycol shall be 0-100 weight part, More preferably, you may be 1-50 weight part.

  Moreover, when a factice is mix | blended with a rubber composition as a softening agent, a sulfur-free factice is used suitably. Examples of the sulfur-free factice include “sulfur-free U-8” and “sulfur-free U-10” manufactured by Tenma Sub Chemical Co., Ltd. These may be used alone or in combination of two or more as required.

  Furthermore, since the silencer of the present embodiment is a rubber composition, the hardness of the physical properties of the rubber composition can be adjusted as appropriate by the blending of the composition material. In the case of the form, a silencer having optimum physical characteristics and configuration on the wall surface of the portable toilet) can be obtained.

  For example, when the rubber composition is made into a hard fabric with a hardness adjusting agent, a sheet-like silencer that can be easily mounted on a planar wall surface of the object to be silenced can be obtained. On the other hand, the rubber composition is made into a soft cloth with a hardness adjusting agent, thereby providing a putty-like silencing device that can be easily attached to a non-planar wall surface such as an uneven surface or a curved surface of a silencing object. Can do.

  In addition, with respect to the object to be silenced, the greater the weight of the silencer, the greater the noise reduction / silencing effect. For this purpose, a specific gravity increasing agent for increasing the specific gravity is preferably added to the rubber composition as appropriate. . As the specific gravity increasing agent, metal powders such as iron and tungsten, barium sulfate and the like are preferably used.

  In addition, various additives can be added to the rubber composition as appropriate, and various functions of these additives can be added. The functions to be added are appropriately selected according to the purpose and application. Is done.

For example, the following aspects can be considered.
i) A fragrance | flavor is mix | blended with the said rubber composition, and the function as an aromatic is provided.

ii) A deodorant is blended in the rubber composition to provide a deodorizing function.

iii) The above rubber composition is blended with plant dry distillation components such as terpenes and catechins to provide antibacterial and deodorizing functions.

iv) A photocatalyst such as titanium oxide is blended in the rubber composition to provide an antibacterial / deodorant function.

v) Tourmaline powder is blended with the rubber composition and has a function of generating negative ions and emitting far infrared rays.

Vi) Ceramic powder is blended with the above rubber composition to provide a trace radiation / far infrared radiation function.

  The silencer composed of the above components is kneaded, molded by press molding, injection molding, extrusion molding, or the like, and cut into a predetermined shape size to obtain a product.

  Therefore, the silencer configured as described above is applied to the outer peripheral wall surface of a portable toilet made of synthetic resin, for example, on the outer peripheral wall surface of the bottom portion of the inner bucket for containing and discarding excrement by self-adhesive force. By being held tightly in a peelable manner, excretion noise is reduced due to vibration control when using a portable toilet.

That is, the silencing apparatus of the present embodiment, Ri Do from a rubber composition having a self-adhesive plastically deformable, capable tightly contact possible and repeatedly detachable from the portable toilet wall is mute object configuration since there is a by suppressing damping action of the vibration of the portable toilet can be effectively sound reduction suppressed when using generated sound leaking around, yet easy to handle easily mute detachable from the portable toilet An instrument can be provided.

  Specifically, the silencer has self-adhesive properties. By attaching and attaching to the outer peripheral wall surface of the inner bucket of a portable toilet with self-adhesive force, vibration of the inner bucket is suppressed (damping action) and excreted. It is possible to effectively suppress the excretion sound generated during use.

  In addition, since the muffler can be plastically deformed, it can be deformed, and it can always be in close contact with the wall, regardless of the shape or properties of the outer peripheral wall of the inner bucket. The vibration effect can be sufficiently exhibited.

  That is, even if the wall surface of the inner bucket is a curved surface that is not a flat surface, or an uneven surface that is not a smooth surface but has a large number of unevenness, the silencer of this embodiment faithfully follows the wall surface. It can be stuck and held in close contact with no gap, and can be integrated with the inner bucket, so that the original vibration damping action of the silencer can be sufficiently exhibited.

  Moreover, since the muffler itself has self-adhesiveness, it can be repeatedly attached to and detached from the inner bucket, and is versatile.

  Furthermore, since the silencer is composed of the rubber composition, the physical properties of the rubber composition can be adjusted as appropriate by blending the composition materials, and the physical properties and configuration are optimal for the inner bucket. It can be a silencer.

  For example, when the rubber composition is made into a hard fabric with a hardness adjusting agent, a sheet-like silencer that can be easily mounted on the planar wall surface of the inner bucket can be obtained. On the other hand, by making the rubber composition a soft fabric with a hardness adjusting agent, it is possible to provide a putty-like silencer that can be easily mounted on a non-planar wall such as an uneven surface or a curved surface of an inner bucket. it can.

  In addition, since the muffler is made of a rubber composition that is insoluble in water, the dirt on the surface can be easily washed away with water, and can be easily restored to the initial state by washing with water, and also in a clean and hygienic state. Can be maintained.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example and a comparative example, these do not restrict | limit the scope of the present invention at all.

  The raw materials used in the following examples and comparative examples are shown in Table 1. In the following description, “part” means “part by weight” unless otherwise specified.

Examples 1-10:
The raw materials having the composition shown in Table 2 are kneaded using a pressure kneader and an open roll, and after obtaining a sheet having a predetermined thickness by press molding using an open roll or a sheet mold, the raw material is cut into a disk shape. The silencer sample (Examples 1 to 10) according to the present invention was obtained.

Comparative Examples 1-3:
The raw materials having the composition shown in Table 3 are kneaded using a pressure kneader and an open roll, and after obtaining a sheet with a predetermined thickness by press molding using an open roll or a sheet mold, the raw material is cut into a disk shape. Comparative samples (Comparative Examples 1 to 3) were obtained.

  For each sample of Examples 1 to 10 and Comparative Examples 1 to 3 obtained as described above, a confirmation experiment was performed for the following characteristics.

A. Confirmation experiment on sound reduction / silence performance and desorption performance:
(A) Equipment and tools used:
(I) Poly bucket Poly bucket made of polypropylene (capacity 9.5 l: opening diameter 300 mm × bottom diameter 190 mm × height 200 mm)
(Ii) Separation funnel 500 ml separation funnel (cock orifice diameter 5 mm)
(Iii) Sound level meter “SD-2200” (trade name: manufactured by Fuso Rika Products Co., Ltd.)

(B) Sample:
Examples 1 to 10 (see Table 2)
・ Comparative Examples 1 to 3 (see Table 3)

(C) Experimental method:
i) Attach the sample in close contact with the bottom outer peripheral wall of the poly bucket and place the tip of the glass tube of the separating funnel at a height of 30 mm from the inner bottom surface of the poly bucket. , Pour water into the center of the inner bottom of the poly bucket with the amount of water dropped in about 15 seconds (split funnel cock fully opened) It was measured by.

  At this time, the sound collecting microphone of the sound level meter is installed at a height of 300 mm from the inner bottom surface of the poly bucket, and the measured sound volume (noise value) is the maximum amount of sound generated at the time of water injection. Recorded.

  The above operation was repeated 5 times for each of the samples (Examples 1 to 10 and Comparative Examples 1 to 3), and the average value of the measured values in these 5 times of water injection was determined. They are shown in Table 3 and FIGS. 1 and 2, respectively.

ii) Using the self-adhesive force, the sample is attached to the outer wall surface of the bottom of the bottom of the bucket once in close contact, peeled off, and then attached again in close contact multiple times. I investigated. The above operation is repeated a plurality of times for each of the samples (Examples 1 to 10 and Comparative Examples 1 to 3), and the results are shown in Table 2 and Table 3, respectively.

(D) Experimental results:
As is clear from the experimental results in Table 2, each of Examples 1 to 10 has self-adhesiveness and has sufficient adhesive strength by itself, so that it can be repeatedly detached and workability is very high. Turned out to be good.

  Moreover, as is clear from the experimental results in Table 2 and FIG. 1, the noise when each of Examples 1 to 10 was pasted by self-adhesive force was 70 dB or less for any of Examples 1 to 10, and pasted. A sound reduction effect of -10 dB or more was obtained compared to the noise in the absence. Further, as is clear from FIG. 2, it was found that the greater the specific gravity of the sample, the higher the sound reduction effect.

  On the other hand, as is clear from the experimental results of Table 3, the self-adhesive strength of Comparative Examples 1 to 3 is weak and there is a problem of peeling off due to its own weight even when pasted. It turns out that it does not function.

  As is clear from the experimental results in Table 3 and FIG. 1, the noise when the comparative examples 1 to 3 are attached with double-sided tapes is substantially the same as that of the examples 1 to 10 of the present invention. Although the effect was obtained, it is necessary to replace the double-sided tape with a new one in order to re-apply it after peeling off, the workability in repeated removal and attachment is very poor, and it is satisfactory as a silencer for portable toilets Turned out not to be.

  From the above, in the silencer according to the present invention (Examples 1 to 10), the vibration of the portable toilet is greatly suppressed by the vibration control action, and the excretion sound during use effectively leaks out. It can be seen that it can relieve the mental pain of a portable toilet user.

  Moreover, since the silencer (Examples 1-10) which concerns on this invention has moderate self-adhesiveness, it has confirmed that it can repeat desorption | detachment, is excellent in workability | operativity, and also can be washed with water, and is excellent also in the sanitary aspect.

  Note that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope thereof.

  For example, although the above-described embodiment is a silencer for sound reduction of a portable toilet used in a room such as a hospital or a general household, the present invention is not limited to such a portable toilet, and the same It can also be applied to devices that are restricted from being used in silence, such as at night, such as washing machine washing noise and kitchen sink washing sound that require sound reduction measures.

It is a diagram which shows the experimental result of the sound reduction / silence confirmation experiment performed compared with the comparative example about the silencer for portable toilets which is one Embodiment of this invention. Similarly, it is a diagram which shows the relationship between the sound reduction effect and specific gravity of the silencer for portable toilets.

Claims (16)

A muffler that reduces the generated sound by suppressing the vibration of the mute object by mounting on the wall of the mute object,
Ri Do from a rubber composition having a plastically deformable, self-adhesive, characterized <br/> that it is a capable tightly contact possible and repeatedly detachable structure relative to the wall surface of the silencer object muffling Instruments.   The muffler according to claim 1, wherein the rubber composition is a rubber composition based on a viscoelastic material.   The muffler according to claim 2, wherein the viscoelastic material is an uncrosslinked rubber-based material.   The muffler according to any one of claims 1 to 3, wherein the rubber composition is blended with polyethylene glycol.   The muffler according to any one of claims 1 to 3, wherein the rubber composition is formulated with tourmaline powder.   The muffler according to any one of claims 1 to 3, wherein the rubber composition contains ceramic powder.   The muffler according to any one of claims 1 to 3, wherein the rubber composition contains a sulfur-free factice.   The silencer according to any one of claims 1 to 3, wherein the rubber composition is blended with a hardness adjusting agent for adjusting the hardness. The rubber composition, by hardness adjusted by the hardness modifier, silencer device according to claim 8, characterized in that it is formed in a planar wall surface mounting easier sheet silencer object . Wherein said rubber composition, which by hardness adjusted by the hardness modifier, characterized in that it is formed in an uneven surface or a curved surface such as a non-planar wall surface mounting easier putty silencer object Item 9. The muffler according to Item 8.   The silencer according to any one of claims 1 to 3, wherein the rubber composition is blended with a specific gravity increasing agent for increasing the specific gravity.   The said rubber composition is equipped with the fragrance | flavor and is equipped with the function as an aromatic, The silencer as described in any one of Claim 1 to 3 characterized by the above-mentioned.   The silencing device according to any one of claims 1 to 3, wherein the rubber composition contains a deodorant.   The silencing device according to any one of claims 1 to 3, wherein the rubber composition has an antibacterial and deodorizing function by blending a plant carbonization component.   The said rubber composition is mix | blended with a photocatalyst and is equipped with an antibacterial and deodorizing function, The silencer as described in any one of Claim 1 to 3 characterized by the above-mentioned. The silencing object is a portable toilet made of synthetic resin,
2. The excretion sound is reduced by the vibration control action when using the portable toilet by being held in close contact with the outer peripheral wall surface of the portable toilet so as to be peelable by self-adhesive force. The muffler for portable toilets as described in any one of 1 to 15.

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