JP4341745B2 - Drainage water tank body - Google Patents

Description

  The present invention relates to a drainage water tank body such as a sink provided with a stainless steel sink tank.

  There exist what is shown in FIG.10 and FIG.11 as this kind of drainage water tank body (for example, refer patent document 1).

  As shown in FIGS. 10 and 11, the sink 1 as the drainage water tank body includes a stainless steel sink tank 2. An anti-vibration elastic sheet 3 having a vibration control function such as a vibration isolating rubber that absorbs or suppresses vibration, water hammer sound, and the like is attached to an almost entire back surface of the bottom 2a of the sink tank 2 with an adhesive 4. . Further, the anti-vibration elastic sheet 3 on the back surface of the bottom portion 2a of the sink tank 2 and the outer peripheral surface of the side wall portion 2b are in close contact with a dew condensation prevention cover 5 having heat insulating properties such as urethane foam resin.

No. 7-28215

JP-A-5-51951

JP 2002-256607 A

  However, in the conventional sink 1, since the vibration-proof elastic sheet 3 is attached to almost the entire back surface of the bottom 2 a of the sink tank 2, the vibration-proof elastic sheet 3 is wasted for the vibration damping effect. As a result, the overall cost was high. Further, since the anti-vibration elastic sheet 3 on the back surface of the bottom portion 2a of the sink tank 2 and the dew condensation prevention cover 5 are closely attached to almost the entire outer peripheral surface of the side wall portion 2b, for example, when ice water or the like is put into the sink tank 2 In some cases, water droplets are generated on the outer periphery of the condensation prevention cover 5 and fall into the cabinet to which the sink tank 2 is attached.

  This invention has been invented in view of such a current situation, and can always reduce the amount of damping sheet sticking as much as possible while maintaining a stable vibration suppression effect and noise suppression effect. An object is to provide an excellent and inexpensive drainage water tank body.

The invention of claim 1 is a drainage water tank body in which a vibration damping sheet is attached to the back surface of the bottom of a water tank having a drain outlet, and a drip-proof cover is attached to the back surface of the bottom of the water tank and the outer peripheral surface of the side wall. In addition, a rectangular vibration-damping sheet is partially pasted at a position facing a predetermined area where the discharged water hits the back surface of the bottom of the water tank, and the drip-proof cover is pasted around the corner and drain Adhering to the bottom of the water tank and the drip-proof cover, a sealed air layer corresponding to the thickness of the damping sheet is provided via the rectangular damping sheet. .

  Invention of Claim 2 is 5% or more of the area ratio which occupies for this back surface of the said rectangular vibration damping sheet | seat partially affixed on the back surface of the bottom part of the said water tank in the drainage water tank body of Claim 1 It is characterized by being set to a range of less than 50%.

As described above, according to the first aspect of the present invention, since the rectangular damping sheet is partially attached to the position facing the predetermined area where the discharged water hits the back of the bottom of the water tank, the damping sheet Even with a small amount of sticking, a stable damping effect and noise suppression effect can always be sufficiently exhibited. In addition, since the vibration damping sheet has a rectangular shape, the cutting yield from the vibration damping sheet original plate can be improved, and the overall cost can be reduced. Furthermore, since the vibration damping sheet has a rectangular shape, it is possible to easily perform the work of attaching the vibration damping sheet to the back surface of the bottom of the water tank, and the rectangular shape between the back surface of the bottom of the water tank and the drip-proof cover. Since the air layer sealed through the vibration damping sheet is provided, the bottom of the water tank can always exhibit a stable damping effect and noise suppression effect even if the damping sheet is applied in a small amount. The heat insulation effect can be enhanced and the occurrence of condensation on the drip-proof cover can be reduced .

  According to the second aspect of the present invention, the area ratio of the rectangular vibration damping sheet partially attached to the back surface of the bottom of the water tank is set in the range of 5% to less than 50%. The sticking amount (use amount) of the vibration damping sheet with 50% or more at which the vibration effect is saturated can be reduced, and the cost can be further reduced accordingly.

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

  1 is a plan view showing a sink according to a first embodiment of the present invention, FIG. 2 is a plan view showing an adhesive relationship between a sink tank and a drip-proof cover of the sink, and FIG. 3 is a sectional view taken along line YY in FIG. FIG. 4 is an enlarged cross-sectional view of the vibration damping sheet attached to the bottom surface of the sink tank.

  As shown in FIGS. 1 to 3, the sink (drainage water tank body) 10 includes a stainless steel sink tank (water tank) 11. That is, the sink tank 11 is formed of a stainless steel plate in a box shape having an upper surface opened by pressure forming such as a deep drawing press, and is attached to the opening 18 a of the sink top plate 18.

  As shown in FIGS. 1 and 2, a drain port 12 is formed at the center rear portion of the bottom 11 a of the sink tank 11. Further, as shown in FIG. 3, rectangular damping sheets 13 and 14 are attached to the back surface 11b of the bottom portion 11a of the sink tank 11, and the back surface 11b and the side wall portion 11c of the bottom portion 11a of the sink tank 11 are attached. A drip-proof cover 15 is attached to the outer peripheral surface 11d via rectangular vibration damping sheets 13 and 14. The bottom portion 11a of the sink tank 11 is a flat portion except for a corner portion between the bottom portion 11a and the side wall portion 11c.

  As shown in FIG. 4, each damping sheet 13 and 14 has a predetermined thickness (for example, 1.70 mm) of butyl rubber adhesives 13b and 14b on the back surfaces of thin (for example, 0.01 mm) aluminum foils 13a and 14a. The butyl rubber adhesives 13b and 14b are coated with release papers 13c and 14c to form a two-layer structure. In Example 1, as the vibration damping sheets 13 and 14, Dipolgy FDC (product name: manufactured by CCI Inc.) was used.

  As shown in FIGS. 1 and 2, the vibration damping sheet 13 is cut into a square shape (for example, 150 mm × 150 mm) and the vibration damping sheet 14 is cut into a rectangular shape (for example, 300 mm × 150 mm) in advance. After the release papers 13c and 14c are peeled off, a position facing a predetermined area where water discharged from a faucet or the like on the back surface 11b of the bottom portion 11a of the sink tank 11 hits (along the solid curve indicated by the symbol M in FIG. 1) Position) is partially pasted and fixed. That is, each of the square damping sheets 13 and 13 is adhered and fixed to the left and right sides of the drain port 12 on the back surface 11b of the bottom 11a of the sink tank 11, and the rectangular shape is formed on the front side of the drain port 12 on the back surface 11b. The vibration damping sheet 14 is stuck and fixed. The area ratio (sticking area ratio) occupying the back surface 11b of each of the rectangular damping sheets 13, 13, and 14 partially pasted on the back surface 11b of the bottom portion 11a of the sink tank 11 is 32.5%. Yes. The noise level of the sink tank 11 in the case where the pasting area ratio is 32.5% is indicated by a symbol A in FIG.

  Further, as shown in FIG. 3, the drip-proof cover 15 is formed in a box shape whose upper surface is opened by a high-foaming polyethylene sheet, and the sink tank 11 is interposed via rectangular vibration-damping sheets 13 and 14. The periphery of the corner portion and the drainage between the bottom portion 11a and the side wall portion 11c of the back surface 11b of the bottom portion 11a by the adhesive 17 so as to cover the entire surface of the rear surface 11b of the bottom portion 11a and the entire outer peripheral surface 11d of the side wall portion 11c. It is stuck and fixed around the mouth 12 (this portion is indicated by the oblique line N in FIG. 2). Thus, an air layer in which the thickness of each damping sheet 13 and 14 (the gap indicated by t in FIG. 3) is sealed between the back surface 11 b of the bottom 11 a of the sink tank 11 and the surface of the drip-proof cover 15. 16 is formed.

  The drip-proof cover 15 is attached after the damping sheets 13, 13, and 14 are attached to the back surface 11b of the bottom portion 11a of the sink tank 11, and then around the corner portion and the drain port 12 (in FIG. 2). This is done by placing a sheet of paper on the portion other than the oblique line N), spraying the adhesive 17 and spraying it, removing the corresponding paper, and then applying the drip-proof cover 15 and affixing. ing.

  As described above, according to the sink 10 of the first embodiment, the square-shaped vibration damping sheet 13 is located at a position facing the predetermined region M where the water discharged from the faucet or the like on the back surface 11b of the bottom portion 11a of the stainless sink tank 11 hits. And the rectangular damping sheet 14 are partially pasted and fixed, so that the area ratio of the damping sheets 13 and 14 to the area of the back surface 11b of the flat part of the bottom 11a of the sink tank 11 is a small amount of 32.5. %, A stable vibration suppression effect and noise suppression effect can always be sufficiently exerted, and noise such as sound of water falling on the bottom 11a of the sink tank 11 and sound generated when placing tableware is surely reduced. be able to.

  In the case of this stainless steel sink tank 11, the flat part of the bottom part 11a of the sink tank 11 is the largest, and the corner part between the bottom part 11a and the side wall part 11c is made of a hard material and hardly generates noise. The effect of sticking the vibration damping sheet on the part is small. Therefore, even if the area ratio (sticking area ratio) occupying the back surface 11b of the flat portion of the bottom portion 11a of each of the rectangular damping sheets 13, 13, 14 is 32.5%, stable vibration damping effect and noise suppression are always achieved. The effect can be fully exhibited.

  In addition, since each damping sheet 13, 14 has a square shape and a rectangular shape, the cutting yield from the damping sheet base plate can be improved, and the cost of the entire sink 10 including the sink tank 11 can be reduced. Can be planned. That is, as shown in FIG. 9, it is possible to reduce the use amount (sticking amount) of 50% or more of the damping sheet at which the damping effect is saturated, and the cost can be further reduced accordingly. Furthermore, each damping sheet 13 and 14 has a square shape and a rectangular shape and can be attached by peeling the release papers 13c and 14c, so that the bottom 11a of the sink tank 11 can be attached to the back surface 11b. The pasting work of the vibration damping sheets 13 and 14 can be easily performed.

  Further, a drip-proof cover 15 is attached to the back surface 11b of the bottom portion 11a of the sink tank 11 and the outer peripheral surface 11d of the side wall portion 11c with rectangular vibration damping sheets 13 and 14 interposed therebetween, and the back surface 11b of the bottom portion 11a of the sink tank 11 and Since the sealed air layer 16 corresponding to the thickness of each damping sheet 13 and 14 (gap t) is formed between the surface of the drip-proof cover 15 and the bottom of the sink tank 11 by the sealed air layer 16. The heat insulating effect of 11a can be enhanced, and the occurrence of condensation on the drip-proof cover 15 can be reduced. Further, since the drip-proof cover 15 is fixed to the periphery of the back surface 11b of the bottom portion 11a of the sink tank 11 (around the corner portion between the bottom portion 11a and the side wall portion 11c) and the drain port 12 by the adhesive 17, Misalignment and slack of the drip-proof cover 15 with respect to the sink tank 11 can be reliably prevented, and the installation work of the drip-proof cover 15 can be improved.

  FIG. 5 is a plan view showing a sink according to a second embodiment of the present invention, and FIG. 6 is a plan view showing an adhesive relationship between a sink tank and a drip-proof cover of the sink.

Since the sink 10 'of the second embodiment is longer in the lateral direction than the sink 10 of the first embodiment, the rectangular vibration dampings are formed on the left and right sides of the drain port 12 on the back surface 11b of the bottom 11a of the sink tank 11. The configuration in which the sheets 14 and 14 are attached and fixed together, and the rectangular vibration damping sheet 14 is also attached and fixed to the front side of the drain port 12 on the back surface 11b is the configuration of the first embodiment. Different. In addition, since the other structure is the same as that of the said Example 1, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted.

  The area ratio (sticking area ratio) of the rectangular vibration damping sheet 14 partially pasted on the back surface 11b of the bottom 11a of the sink tank 11 of Example 2 to the back surface 11b is 39.9%. Thus, the same operations and effects as those of the first embodiment are obtained. The noise level of the sink tank 11 when the sticking area ratio is 39.9% is indicated by reference sign B in FIG.

  FIG. 7 is a plan view showing a sink according to a third embodiment of the present invention, and FIG. 8 is a plan view showing an adhesive relationship between a sink tank and a drip-proof cover of the sink.

  Since the sink 10 ″ of the third embodiment is smaller than the sink 10 of the first embodiment, the drain port 12 is formed at the rear side of the center of the bottom portion 11a of the sink tank 11, and A configuration in which a pair of vibration damping sheets 14 and 14 are attached in a rectangular shape and fixed to the front side of the drain port 12 on the back surface 11b is different from the configuration in the first embodiment. Since it is the same as that of Example 1, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted.

  The area ratio (sticking area ratio) of the rectangular vibration damping sheets 14 and 14 partially pasted on the back surface 11b of the bottom 11a of the sink tank 11 of Example 3 to the back surface 11b is 29.2%. Thus, the same operations and effects as those of the first embodiment are obtained. The noise level of the sink tank 11 when this sticking area ratio is 29.2% is indicated by the symbol C in FIG.

  As shown in FIG. 9, in the first, second, and third embodiments, the rectangular part that is partially attached to the back surface 11 b of the bottom part 11 a of the sink tank 11, as shown in the relationship between the damping sheet application area ratio and the noise level. Since the area ratio (sticking area ratio) occupying the back surface 11b of each shape damping sheet 13, 14 is set to a range of 5% to 50% (ideal value is a range of 30% to 35%). It is possible to reduce the amount (use amount) of the damping sheet of 50% or more where the effect is saturated, and accordingly, the cost of the sinks 10, 10 ′, 10 ″ can be further reduced.

  In each of the above embodiments, the ideal value of the area ratio (applied area ratio) of each damping sheet 13, 14 occupying the back surface 11b of the bottom 11a of the sink tank 11 is 30% to 35%. As shown in FIG. 9, the vibration sheet is excessively pasted. As shown in FIG. 9, a significant reduction in the noise level cannot be expected. Is not very meaningful.

  In addition, according to each said Example, although the case where it applied to the kitchen sink as a drainage water tank body was demonstrated, the said drainage water tank body is not restricted to a sink, said each implementation to other drainage water tank bodies, such as a wash bowl. Of course, the examples can be applied. Of course, the sink tank is not limited to stainless steel but may be made of other materials such as resin.

It is a top view which shows the sink of Example 1 of this invention. It is a top view which shows the adhesive relationship of the sink tank of the said sink, and a drip-proof cover. It is sectional drawing which follows the YY line in FIG. It is an expanded sectional view of the damping sheet affixed on the back surface of the bottom part of the said sink tank. It is a top view which shows the sink of Example 2 of this invention. It is a top view which shows the adhesive relationship of the sink tank of a sink of the said Example 2, and a drip-proof cover. It is a top view which shows the sink of Example 3 of this invention. It is a top view which shows the adhesive relationship of the sink tank of a sink of the said Example 3, and a drip-proof cover. It is explanatory drawing which shows the relationship between the sticking area rate of the said damping sheet, and a noise level. It is sectional drawing of the sink of a prior art example. It is an expanded sectional view of the principal part of the sink of the said prior art example.

Explanation of symbols

10, 10 ', 10 "sink (drainage tank)
DESCRIPTION OF SYMBOLS 11 Think tank 11a Bottom part 11b Back surface 11c Side wall part 11d Outer peripheral surface 13 Square-shaped damping sheet (rectangular damping sheet)
14 Rectangular damping sheet (rectangular damping sheet)
15 Drip-proof cover (condensation prevention cover)
16 Sealed air layer M Predetermined area where discharged water hits

Claims (2)

A drainage water tank body in which a vibration damping sheet is attached to the back surface of the bottom of the water tank having a drain outlet, and a drip-proof cover is attached to the back surface of the bottom of the water tank and the outer peripheral surface of the side wall. A rectangular vibration damping sheet is partially attached to a position facing a predetermined area where the discharged water hits, and the drip-proof cover is attached and fixed around the corner portion and around the drainage port. A drainage water tank body , wherein a sealed air layer corresponding to the thickness of the vibration damping sheet is provided between the bottom surface of the bottom and the drip-proof cover via the rectangular vibration damping sheet .   The drainage water tank body according to claim 1, wherein the area ratio of the rectangular vibration damping sheet partially attached to the back surface of the bottom of the water tank is within a range of 5% or more and less than 50%. Drainage water tank body characterized by setting.

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