Anti-vibration support legs for unit rooms

Abstract

To enhance a vibration suppression effect to minimize transmission of vibrations generated at a unit room to other parts of a building.SOLUTION: A vibration-isolation support leg for a unit room 1 comprises a main body 10 made of an elastic material. On a lower surface of the main body 10, a contact surface 12b that contacts a building floor 200 and a separation surface 14a spaced upward from the building floor 200 are formed.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a vibration-isolating support leg for a unit room that supports, for example, a unit bath. [Background technology]

[0002] Typically, a unit room such as a modular bath installed in a building is supported on the floor of the building's framework (hereinafter referred to as the building floor). For example, Patent Document 1 discloses a support leg structure for a floor pan of a modular room. The support leg in Patent Document 1 has a bolt support leg that screws into a nut fixed to the back of the floor pan, and a shock absorber made of an elastic material is provided at the bottom end of the bolt support leg. In Patent Document 2, a vibration-damping material made of asphalt-based resin is provided between the leg of the modular bath body and the building floor. In Patent Document 3, a bolt-type leg that screws into a nut-type seat fixed to the back of the modular room is provided, and a rubber seat is provided at the bottom end of the bolt-type leg. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-105164 [Patent Document 2] Japanese Patent Application Publication No. 5-300842 [Patent Document 3] Japanese Patent Application Laid-Open No. 2004-137879 Summary of the Invention [Problem to be solved by the invention]

[0004] As in Patent Documents 1 to 3, by providing cushioning materials, vibration-damping materials, etc. at the lower ends of the support legs, it is possible to prevent vibrations generated within the unit room after construction and while the residents are living there from being transmitted to the floors below, etc.

[0005] When supporting the unit room on a building floor, it is necessary to fasten the lower ends of the support legs to the building floor to prevent the unit room from moving horizontally. An adhesive is generally used as a means for fastening the lower ends of the support legs to the building floor. When using an adhesive, the adhesive is first applied to the part of the building floor where the support legs will be placed, and then, when installing the unit room, the lower ends of the support legs can be pressed against the adhesive from above to fasten the lower ends of the support legs to the building floor with the adhesive.

[0006] However, with this method, the adhesive is present on the entire underside of the cushioning material, vibration-damping material, etc., so after the adhesive hardens, the entire underside of the cushioning material, vibration-damping material, etc. is constrained by the hardened adhesive, which causes the entire underside of the cushioning material, vibration-damping material, etc. to lose elasticity. When the entire underside of the cushioning material, vibration-damping material, etc. loses elasticity, the vibration absorption ability decreases, which in turn causes the problem that vibrations generated in the unit room are more likely to be transmitted to the floor below, etc.

[0007] The present disclosure has been made in consideration of such points, and its purpose is to enhance the vibration suppression effect of suppressing the transmission of vibrations generated within a unit room to other parts of the building. [Means for solving the problem]

[0008] To achieve the above object, one aspect of the present disclosure can be based on a vibration-isolating support leg for a unit room that is interposed between a unit room and a building floor. The vibration-isolating support leg for a unit room includes a main body made of an elastic material. The underside of the main body is formed with a contact surface that contacts the building floor and a separation surface that is spaced above the building floor.

[0009] With this configuration, vibrations generated in the unit room are transmitted to the main body made of elastic material. The lower portion of the main body is in contact with the building floor, and the underside of this main body is formed with a contact surface that contacts the building floor and a separation surface that is spaced above the building floor. Therefore, when the main body is fixed to the building floor with adhesive, for example, only the contact surface is fixed to the building floor, and the separation surface is not fixed to the building floor and is not restrained by the adhesive. As a result, when vibrations are applied to the main body from the unit room side, elastic deformation of the main body is allowed so that the separation surface displaces vertically. This improves the vibration absorption effect compared to conventional examples in which the entire underside of the buffer material or vibration-damping material is fixed and restrained to the building floor.

[0010] The lower surface of the main body may have a recess formed therein that is recessed upward. In this case, the separating surface may be formed by the inner surface of the recess. This allows the separating surface to be obtained with a simple structure in which a recess is formed in the lower surface of the main body.

[0011] The hardness of the elastic material constituting the main body may be set, for example, in the range of 72 to 83 Shore A (JIS Shore A type). That is, if the hardness of the elastic material constituting the main body exceeds 83 Shore A, the hardness of the main body significantly reduces the effectiveness of reducing impact noise applied from the unit room side. However, if the hardness is 83 or less, the effectiveness of reducing impact noise applied from the unit room side can be sufficiently enhanced. Furthermore, as a construction standard for unit rooms, the amount of floor sinking after a heavy object of a certain weight is loaded on the floor must be less than a predetermined amount. However, if the hardness of the elastic material constituting the main body is less than 72 Shore A, the main body becomes too soft and the amount of floor sinking exceeds the predetermined amount. Therefore, by setting the hardness of the elastic material constituting the main body within the above range, the impact noise reduction effect applied from the unit room side can be enhanced while also improving the floor load capacity of the unit room.

[0012] The unit room vibration-isolating support leg may further include a rod-shaped support member extending downward from a member constituting the unit room toward the building floor and made of a material harder than the elastic material constituting the main body. In this case, the main body can be provided at the lower end of the support member, so that the main body is interposed between the rigid support member and the building floor. The main body can be provided with a receiving portion having an insertion hole into which the lower end of the support member is inserted, and a protruding portion formed to protrude radially outward from the receiving portion and downward, and the contact surface can be formed by the underside of the protruding portion.

[0013] The protruding part that comes into contact with the building floor protrudes radially from the receiving part that receives the lower end of the support material, which makes it easier for the protruding part to elastically deform in the vertical direction when vibrations are applied to the main body from the unit room side, further enhancing the vibration suppression effect.

[0014] The protruding portion may be annular in shape with the axis of the support member as its center, thereby enabling the contact surface to be an annular surface, thereby stabilizing the main body in an installed state.

[0015] The protruding portion may protrude radially outward beyond a lower end of the support material when viewed in the axial direction of the support material. The support material may be formed, for example, with a hexagonal bolt, and attached to a member constituting the unit room so that the head of the hexagonal bolt is located at the lower end. In this case, the protruding portion may be formed so as to protrude radially outward beyond the head of the hexagonal bolt when viewed in the axial direction of the support material.

[0016] The separation surface may be located directly below the insertion hole. Furthermore, the separation surface may have a protrusion that protrudes downward. For example, when a large downward load is applied, the protrusion formed on the separation surface can abut against the building floor to withstand the load. [Effects of the Invention]

[0017] As explained above, the underside of the main body, which is made of elastic material, has a contact surface that comes into contact with the building floor and a separation surface that is spaced above the building floor, thereby enhancing the vibration suppression effect of suppressing vibrations generated within the unit room from being transmitted to other parts of the building. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a plan view of a unit room supported by vibration-isolating support legs for a unit room according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of the floor pan. [Figure 3] FIG. 3 is a front view of the floor pan. [Figure 4] FIG. 4 is a side view of the floor pan. [Figure 5] FIG. 5 is an enlarged view of the support portion of the floor pan. [Figure 6] FIG. 6 is a front view of the main body of the vibration-isolating support leg for a unit room. [Figure 7] FIG. 7 is a cross-sectional view of the main body of the vibration-isolating support leg for a unit room. [Figure 8] FIG. 8 is a plan view of the main body of the vibration-isolating support leg for a unit room. [Figure 9] FIG. 9 is a bottom view of the main body of the vibration-isolating support leg for a unit room. [Figure 10] FIG. 10 is a graph showing the measurement results of light floor impact sound levels. [Figure 11] FIG. 11 is a graph showing the measurement results of heavy floor impact sound levels. [Figure 12] FIG. 12 is a diagram showing the structure of a support leg according to a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0020] FIG. 1 is a plan view of a unit room 100 supported by a vibration-isolating support leg 1 for a unit room (shown in FIGS. 2, 3, etc.) according to an embodiment of the present invention. In this embodiment, the unit room 100 is described as a unit bath; however, the present invention can be applied to cases other than a unit bath, such as supporting a shower unit, a toilet unit, or a soundproof room. The unit room 100 includes a floor pan 101, wall panels 102, and a ceiling panel (not shown), which are examples of components constituting the unit room 100. The size and shape of the floor pan 101 are not particularly limited and are appropriately determined depending on the purpose of the unit room 100, etc. Furthermore, the components constituting the unit room 100 are not limited to the floor pan 101, wall panels 102, and ceiling panels described above. If the unit room 100 is a unit bath, a bathtub or the like may be included. If the unit room 100 is a toilet unit, a toilet or the like may be included.

[0021] FIG. 2 is a plan view of the floor pan 101, and what is indicated by a dashed line in this figure is the unit room vibration-isolating support leg 1. FIG. 3 is a front view of the floor pan 101, and FIG. 4 is a side view of the floor pan 101. As shown in FIGS. 3 and 4, the floor pan 101 is supported on a floor 200 of the building's framework (hereinafter referred to as the building floor 200) via a plurality of unit room vibration-isolating support legs 1. In other words, the unit room vibration-isolating support leg 1 is a member that is interposed between the unit room 100 and the building floor 200 and that suppresses transmission of vibrations generated on the unit room 100 side to the building floor 200.

[0022] The multiple unit room vibration-isolating support legs 1 are arranged at intervals from one another in the horizontal direction. In this embodiment, the multiple unit room vibration-isolating support legs 1 are arranged so as to line up in both the width and depth directions of the unit room 100. The interval between adjacent unit room vibration-isolating support legs 1 is set appropriately depending on the weight of the unit room 100, etc.

[0023] The building in which the unit room 100 is installed may be, for example, a detached house, an apartment building, a hotel, etc., but is not limited to these and may be various types of buildings. The building floor 200 may be, for example, a concrete plate such as a PC (prestressed concrete) plate, but is not limited to being made of concrete and may be made of, for example, metal, wood, etc.

[0024] FIG. 5 shows an enlarged view of one unit room vibration-isolating support leg 1. The unit room vibration-isolating support leg 1 includes a main body 10, a rod-shaped support member 20, an upper nut 110, and a lower nut 111. As shown in FIG. 5, a mounting member 101a, to which the unit room vibration-isolating support leg 1 is attached, is fixed to the underside of a floor pan 101. The mounting member 101a protrudes downward from the underside of the floor pan 101. The mounting member 101a is hollow inside. An insertion hole 101c, into which the support member 20 is inserted, is formed in a lower wall portion 101b of the mounting member 101a so as to penetrate the lower wall portion 101b in the vertical direction. The upper surface of the upper nut 110 of the unit room vibration-isolating support leg 1 abuts against the lower wall portion 101b of the mounting member 101a. In the description of this embodiment, the vibration-damping support leg 1 for the unit room is configured to include an upper nut 110 and a lower nut 111, but this is not limited to this, and the upper nut 110 and the lower nut 111 may also be components that form part of the mounting member 101a.

[0025] In addition to supporting the floor pan 101, the vibration-isolating support leg 1 for a unit room can also support, for example, a bathtub in the case of a unit bath, or a toilet bowl in the case of a toilet unit. In other words, the vibration-isolating support leg 1 for a unit room can support the various components that make up the unit room 100.

[0026] The main body 10 of the vibration-isolating support leg 1 for a unit room is made of an elastic material such as rubber. Examples of elastic materials that make up the main body 10 include, but are not limited to, EPDM (ethylene propylene diene rubber). The main body 10 can also be obtained by mixing multiple types of rubber raw materials. The elastic material that makes up the main body 10 may be primarily made of rubber, with other components such as fillers mixed in.

[0027] The hardness of the elastic material constituting the main body 10 is set in the range of 72 to 83 Shore A. The hardness is indicated by a durometer hardness (durometer type A) measured in accordance with JIS K 6253, and can also be expressed as A72 to A83. To obtain an elastic material having a hardness in the range of 72 to 83 Shore A, the composition of the rubber can be changed. Alternatively, an elastic material having a hardness in the range of 72 to 83 Shore A can be obtained by using commercially available rubber raw materials.

[0028] If the hardness of the elastic material that makes up the main body 10 exceeds 83 Shore A, the main body 10 becomes too hard, and the effect of reducing impact noise applied from the unit room 100 side when supporting the unit room 100 is significantly reduced. If the hardness of the elastic material that makes up the main body 10 is 83 Shore A or less, the effect of reducing impact noise applied from the unit room 100 side can be sufficiently increased.

[0029] Furthermore, as a construction standard for the unit room 100, the amount of sinking of the floor pan 101 after a heavy object of a predetermined weight is loaded onto the floor pan 101 must be less than a predetermined amount. If the hardness of the elastic material constituting the main body 10 is below 72 Shore A, the main body 10 will become soft and the amount of sinking of the floor pan 101 will exceed the predetermined amount. Therefore, by keeping the hardness of the elastic material constituting the main body 10 within the above range, it is possible to improve the impact noise reduction effect applied from the unit room 100 side while also improving the floor load capacity of the unit room 100.

[0030] The support member 20 extends downward from a member constituting the unit room 100 (floor pan 101 in this example) toward the building floor 200. The support member 20 is made of a material harder than the elastic material constituting the main body 10, such as a metal such as iron or stainless steel. In this embodiment, the support member 20 is made of a hexagonal bolt, and has a hexagonal column-shaped head 20a and a shaft 20b with a threaded groove formed on the outer circumferential surface. The support member 20 is attached to the floor pan 101 with the head 20a located at the lower end and the shaft 20b extending upward. Therefore, the axis A of the support member 20 extends in the up-down direction (vertical direction).

[0031] That is, both the upper nut 110 and the lower nut 111 are threaded onto the shaft portion 20b of the support material 20, and by tightening the upper nut 110 and the lower nut 111 in a direction in which they approach each other, the upper nut 110 and the lower nut 111 are locked and do not rotate relative to the shaft portion 20b. In this state, the shaft portion 20b of the support material 20 protrudes upward from the top surface of the upper nut 110, and the protruding portion is inserted into the insertion hole 101c of the mounting member 101a.

[0032] By loosening the upper nut 110 and the lower nut 111, they can be rotated relative to the shaft portion 20b, thereby adjusting the support height provided by the unit room vibration-isolating support leg 1. After adjusting the height, the upper nut 110 and the lower nut 111 can be tightened in a direction that brings them closer to each other to lock them into place.

[0033] The main body 10 is provided at the lower end of the support material 20. The main body 10 is provided with a receiving portion 11 that receives a head portion 20a, which is the lower end of the support material 20, and a protruding portion 12 that protrudes radially outward from the receiving portion 11 and also protrudes downward, and the receiving portion 11 and the protruding portion 12 are integrally molded.

[0034] As shown in FIGS. 6 to 9 , the receiving portion 11 has a cylindrical shape concentric with the axis A of the support member 20. The receiving portion 11 is formed with an insertion hole 11a into which the head portion 20a of the support member 20 is inserted. The insertion hole 11a opens to the upper end surface of the receiving portion 11. The horizontal cross-sectional shape of the insertion hole 11a is hexagonal, similar to the cross-sectional shape of the head portion 20a of the support member 20. Therefore, the inner surface of the insertion hole 11a is composed of six faces. As a result, when the head portion 20a of the support member 20 is inserted into the insertion hole 11a, the outer surface of the head portion 20a and the inner surface of the insertion hole 11a face or abut against each other, thereby suppressing rotation of the support member 20 around the axis A relative to the main body portion 10. The depth of the insertion hole 11a is set to be approximately the same as the vertical dimension of the head portion 20a of the support member 20. The lower surface of the head 20a of the support member 20 abuts against the bottom surface of the insertion hole 11a, and the downward load from the head 20a of the support member 20 acts on the bottom surface of the insertion hole 11a.

[0035] The protruding portion 12 is integrated with the radially outer portion of the receiving portion 11 and protrudes radially outward from the radially outer portion of the receiving portion 11. The protruding portion 12 is formed over the entire circumferential direction of the receiving portion 11 and forms an annular shape centered on the axis A of the support material 20. As shown in FIG. 7 and other figures, an annular groove 13 is formed between the upper end of the protruding portion 12 and the receiving portion 11. This separates the upper end of the protruding portion 12 from the receiving portion 11.

[0036] The outer peripheral surface 12a of the protruding portion 12 is configured as a tapered surface whose diameter increases as it approaches the lower end. When viewed in the direction of the axis A of the support material 20 (vertical direction), the protruding portion 12 protrudes radially outward beyond the head portion 20a of the support material 20. Specifically, the lower portion of the protruding portion 12 has an outer diameter larger than the inner diameter of the insertion hole 11a. Furthermore, the lower portion of the protruding portion 12 has a larger diameter than the annular groove 13.

[0037] The lower portion of the overhanging portion 12 is a portion of the main body 10 that protrudes downward, and this protruding portion forms a ring shape centered on the axis A of the support material 20. As a result, a recess 14 that is recessed upward is formed on the underside of the main body 10. Due to the formation of the recess 14, only a portion of the underside of the main body 10 comes into contact with the building floor 200, and the other portion becomes a non-contact surface that does not come into contact with the building floor 200.

[0038] That is, the underside of the main body 10 is formed with a contact surface 12b that comes into contact with the building floor 200, and a separation surface 14a that is spaced above the building floor 200. The contact surface 12b is formed by the underside of the overhanging portion 12. Because the overhanging portion 12 is annular, the contact surface 12b also has an annular shape centered on the axis A of the support material 20. The difference in height between the contact surface 12b and the separation surface 14a only needs to be set so that the separation surface 14a does not come into contact with the building floor 200 during use, and can be set to, for example, 5 mm or more, or 8 mm or more.

[0039] The separation surface 14a is formed by the inner surface of the recess 14, and is surrounded by the contact surface 12b when the main body 10 is viewed from below. The separation surface 14a is located directly below the insertion hole 11a. Therefore, when viewed along the axis A of the support member 20, the bottom surface of the insertion hole 11a overlaps with the separation surface 14a.

[0040] A protrusion 15 that protrudes downward is formed on the separation surface 14a. The protrusion 15 has a ring shape centered on an extension of the axis A of the support material 20. Therefore, the protrusion 15 is not formed on the extension of the axis A of the support material 20, but is formed to surround the extension of the axis A of the support material 20. Furthermore, the tip surface (lower surface) of the protrusion 15 in the protruding direction is positioned above the contact surface 12b. Therefore, as shown in FIG. 5, the lower surface of the protrusion 15 does not contact the building floor 200 when installed. However, for example, if an extremely large load greater than that during normal use is applied to the floor pan 101, the main body 10 may elastically deform, causing the lower surface of the protrusion 15 to contact the building floor 200. Note that the protrusion 15 may be omitted.

[0041] 5, adhesive 202 is applied to the portion of the building floor 200 to which the main body 10 is fixed. The adhesive 202 fixes the lower end of the protruding portion 12 to the upper surface of the building floor 200. This prevents the main body 10 from moving horizontally relative to the building floor 200.

[0042] After the unit room vibration-isolating support leg 1 is installed, vibrations generated within the unit room 100 are transmitted to the main body 10 via the support material 20. Because the support material 20 is made of metal, it is unlikely that the support material 20 will absorb any vibrations. In this embodiment, the lower portion of the main body 10 is the part that comes into contact with the building floor 200, and the underside of this main body 10 is formed with a contact surface 12b that comes into contact with the building floor 200 and a separation surface 14a that is spaced above the building floor 200. Therefore, for example, when the main body 10 is fixed to the building floor 200 with adhesive 202, only the contact surface 12b is fixed to the building floor 200, and the separation surface 14a is not fixed to the building floor 200 and is not restrained by the adhesive 202. As a result, when vibration is applied to the main body 10 from the unit room 100 side, elastic deformation of the main body 10 is permitted so that the separating surface 14a displaces in the vertical direction, thereby improving the vibration absorption effect compared to the conventional example in which the entire underside of the buffer material, vibration-damping material, etc. is fixed and restrained to the building floor 200.

[0043] The protruding portion 12 that contacts the building floor 200 protrudes radially from the receiving portion 11 that receives the lower end of the support material 20, and has a shape that protrudes downward, so that when vibration is applied to the main body 10 from the unit room 100 side, the protruding portion 12 is more likely to elastically deform in the vertical direction. This further enhances the vibration suppression effect.

[0044] (Floor impact sound level test) Next, we will explain the results of floor impact sound level tests when using vibration-isolating support legs 1 for unit rooms. A unit bath as shown in Figures 1 to 4 was prepared as the unit room 100 supported by vibration-isolating support legs 1 for unit rooms. The unit bath measures 1800 mm in width, 1400 mm in depth, and 240 mm in floor height. The building floor 200 is a 200 mm thick rough concrete slab, measuring 2690 mm x 1780 mm. The room temperature during the test was in the range of 17°C to 20°C.

[0045] As Examples 1 to 3, main body portions 10 having the shapes shown in Figures 6 to 9 and support materials 20 having the shape shown in Figure 5 were prepared. As shown in Table 1, the main body portion 10 of Example 1 is made of EPDM having a Shore A hardness of 70, the main body portion 10 of Example 2 is made of EPDM having a Shore A hardness of 75, and the main body portion 10 of Example 3 is made of EPDM having a Shore A hardness of 80. The contact surfaces 12b of the main body portions 10 of Examples 1 to 3 are fixed to a building floor 200 with an adhesive 202 as shown in Figure 5.

[0046] The comparative example shown in FIG. 12 is an example in which the main body 10 is omitted and the head 20a of the support material 20 is placed directly on the building floor 200.

[0047] [Table 1]

[0048] The lightweight floor impact sound level test complies with JIS-A-1418-1. The heavy-duty floor impact sound level test complies with JIS-A-1418-2. There were five sound source points, one at the center of the floor slab and four diagonal midpoints of the same slab. There were five sound receiving points, one at the center of the floor slab and four diagonal midpoints directly below the entire surface of the floor slab on the upper floor. The average value of the sound pressure received at the five sound receiving points was calculated and used as the measurement data. For the lightweight floor impact sound level, the average sound pressure value was used for each measurement data. For the heavy-duty floor impact sound level, the maximum sound pressure level was calculated and used as the measurement data. The measurement data are shown in the graphs of Figures 10 and 11.

[0049] For the light floor impact sound level measurement, a tapping machine (manufactured by Rion: FI-01) was used as the sound generator, and for the heavy floor impact sound level measurement, a banging machine (manufactured by Rion: FI-02) was used as the sound generator. For both the light floor impact sound level measurement and the heavy floor impact sound level measurement, sound pressure was measured using an acoustic measuring instrument manufactured by B&K.

[0050] As shown in Table 1, in Example 1, the L value of the light floor impact sound was LL-62, and in Examples 2 and 3, the L value of the light floor impact sound was LL-65. Furthermore, the L value of the heavy floor impact sound in Examples 1 to 3 was LH-54. Thus, in all of Examples 1 to 3, both the light floor impact sound level and the heavy floor impact sound level are significantly lower than in the comparative example shown in Figure 12. When using a main body 10 made of an elastic material with a Shore A hardness of more than 80, both the L value of the light floor impact sound and the L value of the heavy floor impact sound are significantly worsened.

[0051] (Floor pan deflection test) Next, a deflection test of the floor pan 101 will be described. The main bodies 10 of Examples 1 to 3 described above were prepared, and each was used to construct a vibration-isolating support leg 1 for a unit room. For each of the cases where the floor pan 101 was supported by the vibration-isolating support leg 1 for a unit room using the main body 10 of Example 1, where the floor pan 101 was supported by the vibration-isolating support leg 1 for a unit room using the main body 10 of Example 2, and where the floor pan 101 was supported by the vibration-isolating support leg 1 for a unit room using the main body 10 of Example 3, the amount of vertical displacement was measured using a dial gauge at four locations: the drain outlet, the center of the washing area, and the center of the horizontal part of the wall-mounting surface (in the width and depth directions). The room temperature during the test was normal.

[0052] A static load of 120 kg (1177 N) was applied to the center of floor pan 101 via a 280 mm diameter load plate with a rubber plate approximately 10 mm thick attached to the backside. Before applying the load, the dial gauge was set to 0, and 10 minutes after applying the load, the displacement amounts at four points were measured with the dial gauge, and the obtained displacement amounts were taken as the deflection (sinking amount) of each part of floor pan 101.

[0053] The amount of deflection for each part is shown in Table 2. The specified values ​​are 1.0 mm or less at the drain outlet, 3.0 mm or less at the center of the washing area, and 2.0 mm or less at the center (width direction) of the horizontal part of the wall-mounting surface and the center (depth direction) of the horizontal part of the wall-mounting surface. These specified values ​​are just an example, and different values ​​may be used. In Table 2, the upper row shows the amount of deflection when a static load is applied, and the lower row shows the amount of distortion of the floor when the static load is removed.

[0054] [Table 2]

[0055] In Examples 2 and 3, the deflection of each part of the floor pan 101 was below the specified value. In Example 1, the deflection of the central part (width direction) of the horizontal part of the wall-riding surface exceeded the specified value (2.0 mm). However, when the main body 10 was made of an elastic material with a Shore A hardness of 72, the deflection of the central part (width direction) of the horizontal part of the wall-riding surface was below the specified value. Therefore, the floor deflection test results shown in Table 2 show that an elastic material with a Shore A hardness of 72 or more is preferable.

[0056] Table 3 shows the test results when a bathtub (total weight 110 kg) was placed in a modular bathroom, a weight equivalent to 270 L of water was added to the bathtub, and a load of 100 kg (980 N) was applied to the center of floor pan 101 via a rubber plate approximately 5 mm thick and 150 mm in diameter. The specified value is 1 mm or less. This specified value is an example and may be a different value.

[0057] [Table 3]

[0058] In Table 3, the upper row indicates the amount of deflection after one hour of application of a static load, and the lower row indicates the amount of distortion of the floor when the static load is removed. In Examples 2 and 3, the amount of deflection of each part of the floor pan 101 was below the specified value. In Example 1, the center of the washing area, the center of the horizontal part of the wall-mounting surface (width direction), and the center of the horizontal part of the wall-mounting surface (depth direction) exceeded the specified value (1.0 mm). However, when the main body 10 made of an elastic material with a Shore A hardness of 72 was used, the amount of deflection of the center of the washing area, the center of the horizontal part of the wall-mounting surface (width direction), and the center of the horizontal part of the wall-mounting surface (depth direction) was below the specified value. Therefore, the floor deflection test results shown in Table 3 indicate that an elastic material with a Shore A hardness of 72 or more is preferable.

[0059] The above-described embodiments are merely examples in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0060] As described above, the vibration-isolating support leg for a unit room according to the present disclosure can be used, for example, when supporting a unit bath or the like on a building floor. [Explanation of symbols]

[0061] 1 Anti-vibration support legs for unit rooms 10 Main body 11 Receiving part 11a Insertion hole 12 Overhang 12b Contact surface 14 Recess 14a Separation surface 15 Protrusion 20 Support material 100 unit rooms

Claims

1. A vibration-isolating support leg for a unit room interposed between the unit room and a building floor, a main body made of an elastic material; a rod-shaped support member extending downward from the member constituting the unit room toward the building floor and made of a material harder than the elastic material constituting the main body portion; The support member is formed of a hexagonal bolt and is attached to the member constituting the unit room so that the head of the hexagonal bolt is located at the lower end thereof, The main body is provided at a lower end of the support member, The main body is provided with a receiving portion having an insertion hole into which the lower end of the support material is inserted, and a protruding portion formed so as to protrude radially outward from the head of the hexagonal bolt and radially outward from the receiving portion and protrude downward when viewed in the axial direction of the support material, The lower surface of the main body is formed with a recess recessed upward, a contact surface formed by the lower surface of the protruding portion and contacting the building floor, a separation surface formed by the inner surface of the recess and located directly below the insertion hole and spaced upward from the building floor, and a protrusion protruding downward, A vibration-damping support leg for a unit room, wherein the lower surface of the protrusion is positioned between the contact surface and the spacing surface which is formed by the inner surface of the recess and is positioned directly below the insertion hole.

2. The vibration-isolating support leg for a unit room according to claim 1, The hardness of the elastic material constituting the main body is set in the range of 72 to 83 Shore A.

3. The vibration-isolating support leg for a unit room according to claim 1, The protruding portion forms a ring shape centered on the axis of the support material.

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