JP2011063964A - Impact absorbing floor post - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an impact absorbing floor post which has a simple structure, which can surely absorb an impact received from a floor board, and which can dramatically reduce propagation of noises and vibrations. <P>SOLUTION: In an employed technological means, a buffer member 4 is a cap member which is molded from an elastically deformable material; a through-hole 41 ranging from an upper position to a lower one is formed; the buffer member 4 is attached in a capping manner and fixed to an upper end opening 22 of a screw rod 2; a top surface of the buffer material 4 is fixed to an undersurface of a floor supporting top board 1 in the state of urging it and adhering thereto; the screw rod 2 and a base member 3 are screwed together; the base member 3 is placed on a slab, so that a sealed space S can be created inside the screw rod 2 and the base member 3; and this enables the impact from the top surface of the floor supporting top board 1 to be damped and absorbed by the elastic deformation of the buffer member 4, and enables the impact to be damped and absorbed by compressing air in the space S along with the elastic deformation of the buffer member 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is an improvement of a plastic floor post used as a building material. More specifically, it can absorb an impact received from a floor plate with a simple structure, and can dramatically reduce the propagation of noise and vibration. The present invention relates to a shock absorbing floor post that can be made.

  As is well known, in recent floor construction, in order to minimize the work of woodwork such as bundling at the site, the floor is adjusted using a height-adjustable floor bundle (so-called “floor post”) using an adjusting bolt mechanism. The construction method to be constructed is becoming popular.

  Therefore, the present applicant has also developed a floor post for construction and has made a plastic as a use material from the viewpoint of excellent formability (for example, see Patent Document 1). ).

  However, in such a conventional plastic floor post, the main body inevitably has a predetermined rigidity in order to increase the support strength, so the floor post absorbs the impact received from the floor material well. However, the impact was transmitted to the slab as it was through the floor post, which could cause noise and vibration damage down the floor.

Japanese Patent Laying-Open No. 2003-74171 (page 3-4, FIG. 1)

  The present invention has been made in view of the above-mentioned problems with conventional plastic floor posts, and the object of the present invention is to simply absorb the impact received from the floor board with a simple structure. An object of the present invention is to provide an impact absorbing floor post that can dramatically reduce the propagation of noise and vibration.

  Means employed by the present inventor for solving the above technical problem will be described with reference to the accompanying drawings.

That is, the present invention comprises a floor receiving top plate 1 for supporting and fixing a floor material at the upper end, and a base member 3 placed on the slab at the lower end.
A rod-shaped plastic hollow molded body, wherein a screw rod 2 having a screw screw 21 formed on its outer periphery is screwed into a nut screw portion 31 formed on the base member 3 and rotated forward and reverse to thereby form the floor material. While the level can be adjusted up and down,
The buffer member 4 is a cap member formed of an elastically deformable material, and forms a through hole 41 extending vertically, and the buffer member 4 is fixedly fastened to the upper end opening 22 of the screw rod 2. And, the upper surface of the buffer member 4 is fixed in a state of being urged and adhered to the lower surface of the floor receiving top plate 1,
By screwing the screw rod 2 and the base member 3 and placing the base member 3 on the slab, a sealed space S is created inside the screw rod 2 and the base member 3. And
A technique in which shock from the upper surface of the floor receiving top plate 1 is absorbed and absorbed by elastic deformation of the buffer member 4 and can be absorbed and absorbed by air compression in the space S accompanying elastic deformation of the buffer member 4. Adopted the means.

  Further, in order to solve the above-mentioned problems, the present invention forms a fastening hole 42 extending in the vertical direction in the buffer member 4 in addition to the above means as required, and the fastening member is formed in the fastening hole 42. The technical means of inserting 5 and fixing the floor receiving top plate 1 and the buffer member 4 in a close contact state can be employed.

  Furthermore, in order to solve the above-described problems, the present invention forms the upper surface of the buffer member 4 in a flat manner in addition to the above-described means as needed, and presses the lower surface of the floor support top plate 1 in a biased and close state. The technical means of enabling can be adopted.

  Furthermore, in order to solve the above-described problems, the present invention includes, in addition to the above-described means, if necessary, press-fit the main body portion of the buffer member 4 into the inner peripheral surface of the screw rod 2 in a tightly fitted state. Therefore, it is possible to adopt a technical means for making it possible to fix both members.

  Furthermore, in order to solve the above-described problems, the present invention forms a convex portion on the outer peripheral surface of the main body of the buffer member 4 or the inner peripheral surface of the screw rod 2 in addition to the above-described means as necessary. It is possible to employ a technical means for fixing both the members 4 by press-fitting the members 4 into the tightly fitted state and attaching them.

  Furthermore, in order to solve the above-described problems, the present invention employs technical means in which ribs 43 are provided along the axial direction on at least a part of the surface of the buffer member 4 in addition to the above means as necessary. can do.

  Furthermore, in order to solve the above-described problems, the present invention forms a flange 24 at the upper end of the screw rod 2 as needed, and a hooking lever 44 at the lower end of the buffer member 4 as necessary. It is possible to adopt a technical means for forming and making it possible for the latching collar 44 to be elastically deformed and to be covered with the flange 24.

  Furthermore, in order to solve the above-described problems, the present invention employs technical means in which the buffer member 4 is made of natural rubber or synthetic rubber having a rubber hardness of 50 to 90 in addition to the above means as necessary. be able to.

In the present invention, the floor receiving top plate for supporting and fixing the floor material is provided at the upper end, and the base member placed on the slab is disposed at the lower end, which is a rod-shaped plastic hollow molded body, While screw screws formed on the outer periphery are screwed into nut screw portions formed on the base member, the level of the floor material can be adjusted up and down by rotating forward and reverse,
The buffer member is a cap member formed of an elastically deformable material, and has a through-hole extending vertically, and the buffer member is attached and fixed to the upper end opening of the screw rod. By fixing the upper surface of the member to the lower surface of the floor receiving top plate in a biased and close state, screwing the screw rod and the base member, and placing the base member on the slab By creating a sealed space inside the screw rod and base member,
An impact from the upper surface of the floor receiving top plate can be attenuated and absorbed by elastic deformation of the buffer member, and can be attenuated and absorbed by air compression in the space accompanying the elastic deformation of the buffer member.

  Therefore, by using the shock absorbing floor post of the present invention, it is possible to reliably absorb the impact received from the floor board, and the propagation of noise and vibration can be dramatically reduced. It can be said to be big.

It is a disassembled perspective view showing the floor post of 1st Embodiment of this invention. It is a perspective view showing the buffer member of 1st Embodiment of this invention. It is sectional drawing showing the use condition of the floor post of 1st Embodiment of this invention. It is a disassembled perspective view showing the floor post of 2nd Embodiment of this invention. It is a perspective view showing the buffer member of 2nd Embodiment of this invention. It is sectional drawing showing the use condition of the floor post of 2nd Embodiment of this invention. It is the upper side figure and the side view showing the modification of the buffer member of 2nd Embodiment of this invention. It is a top view showing the modification of the buffer member of 2nd Embodiment of this invention.

  The mode for carrying out the present invention will be described in more detail with reference to the drawings specifically illustrated as follows.

“First Embodiment”
A first embodiment of the present invention will be described with reference to FIGS. In the figure, what is indicated by reference numeral 1 is a floor receiving top plate, what is indicated by reference numeral 2 is a screw rod, and what is indicated by reference numeral 3 is a base member.

  Thus, in configuring the floor post in this embodiment, first, the floor receiving top plate 1 for supporting and fixing the floor material is provided at the upper end, and the base member 3 placed on the slab is arranged at the lower end. Set up. The floor backing plate 1 of the present embodiment employs a plywood in which a plurality of wooden boards are laminated. The base member 3 is manufactured by injection molding of a plastic material (for example, polypropylene (PP)).

  The screw rod 2 is a rod-shaped plastic hollow molded body. A screw screw 21 is formed on the outer periphery, and the screw rod 2 is screwed into a nut screw portion 31 formed on the base member 3. In the present embodiment, the screw rod 2 is manufactured by injection molding of a plastic material (for example, polypropylene (PP)).

  And it has the structure which can raise / lower the level of the said floor material by rotating this screw rod 2 forward / reversely.

  Next, the buffer member 4 is a cap member formed of an elastically deformable material (for example, a rubber material such as styrene butadiene rubber (SBR)), and forms a through hole 41 extending vertically. This is to prevent a bulge in the horizontal direction due to compression elastic deformation and to produce an air cushion effect described later. In this embodiment, a circular hole is provided in a substantially central portion. Further, the buffer member 4 can be made of natural rubber or synthetic rubber having a rubber hardness of 50 to 90 (more preferably 70), and an appropriate elastic deformation rate and support strength can be obtained.

  Then, the buffer member 4 is attached and fixed to the upper end opening 22 of the screw rod 2. In the present embodiment, the two members are fixed by press-fitting the main body of the buffer member 4 into the inner peripheral surface of the screw rod 2 in a tightly fitted state and being attached thereto. When fixing, an adhesive can be used as appropriate, and slippage and lifting due to vibration can be prevented.

  Further, the buffer member 4 is fixed in a state where the upper surface of the buffer member 4 is urged and adhered to the lower surface of the floor receiving top plate 1. At this time, both members can be firmly fixed by curing the adhesive applied to the boundary surface.

  In the present embodiment, the upper surface of the buffer member 4 can be formed flat and pressed against the lower surface of the floor receiving top plate 1 in close contact.

  Thereafter, the screw rod 2 and the base member 3 are screwed together, and the base member 3 is placed on the slab (see FIG. 3). Specifically, when the base member 3 is fixed on the slab, an adhesive is applied onto the slab, and the base member 3 is placed before the adhesive is cured. Alternatively, the excess adhesive is oozed out from the bleed hole formed on the bottom surface and cured and fixed. Then, a sealed space S is created inside the screw rod 2 and the base member 3. At this time, even when the bottom surface of the base member 3 has an opening, the base member 3 is closed with the adhesive.

  Thus, the impact received from the upper surface of the floor receiving top plate 1 is attenuated and absorbed by the elastic deformation of the buffer member 4 and is compressed by air in the space S accompanying the elastic deformation of the buffer member 4. Can also be absorbed and attenuated. That is, by forming the through hole 41 in the buffer member 4, the volume of the space S is contracted by the (compression) elastic deformation of the buffer member 4, and the air cushion effect is produced.

  By configuring as described above, the impact received from the floor board can be reliably absorbed, and the propagation of noise and vibration can be dramatically reduced.

“Second Embodiment”
Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the buffer member 4 is formed with fastening holes 42 extending vertically (four in this embodiment), and the fastening members 5 (tapping screws in the present embodiment) are inserted into the fastening holes 42. And the floor receiving top plate 1 and the buffer member 4 can be fixedly fixed in a close contact state (see FIGS. 4 and 5). At this time, it is preferable to use an adhesive in combination, and it can be more reliably fixed without a gap. Further, since the fixing hole 42 is also included in a part of the space S, the volume of the space S is contracted by the (compression) elastic deformation of the buffer member 4, and an air cushion effect is produced.

  Moreover, in this embodiment, the convex part 23 is shape | molded in the internal peripheral surface of the screw rod 2, and both the members are fixed more firmly by press-fitting the shock-absorbing member 4 in the tight-fitting state. Can do. In addition, this convex part can also be formed in the main-body part outer peripheral surface of the buffer member 4.

  At this time, the flange 24 can be formed at the upper end of the screw rod 2, while the latching hook 44 can be formed at the lower end of the buffer member 4, and the hooking hook 44 can be elastically deformed to cover the flange 24. By hooking them, it is possible to prevent slippage and lifting due to vibration. The latching hook 44 may be formed over the entire circumference or may be formed on a part of the outer circumference.

  Furthermore, in the present embodiment, the ribs 43 can be provided along the axial direction on at least a part of the surface of the buffer member 4. For example, even when the rubber material has a low rubber hardness and is soft, the buffer member 4. The amount of elastic deformation can be adjusted while maintaining the supporting strength in the compression direction. The rib 43 may be formed linearly on the outer peripheral surface as shown in FIGS. 4 and 5, or it may have a cross-shaped cross section in the through hole 41 as shown in FIG. Or can be formed linearly on the inner peripheral surface of the through-hole 41 as shown in FIG.

The quality performance test of the product of the present invention is shown below.
<Experimental conditions>
(1) Specimen [Type] Dry double floor structure [Dimensions (mm)] Vertical x Horizontal 2760 x 3560
Floor height 200 (floor floor 168)
[Area density] General cross section 21.8kg / m ²
[Material structure (mm)]
Finishing material: Flooring (thickness 12)
Base panel: Particleboard (thickness 20)
Support leg: Base plate (plywood, 97 × 97, thickness 15)
+ Cushioning material (JIS K 6386, SBR, Class A, rubber hardness 50 degrees) (corresponds to the cushioning member 4 of the present invention and does not attach to the “conventional product”)
+ Support bolt (polypropylene, φ41)
+ Leg bottom (polypropylene, φ100)
(2) Test method [Applicable standards]
JIS A 1440-1: 2007 “Measurement method of floor impact sound level reduction of floor finishing structure on concrete floor in laboratory—Part 1: Method using standard lightweight impact source” and JIS A 1440-2: 2007 “Laboratory Conforms to "Measurement method of floor impact sound level reduction of floor finish structure on concrete floor in JIS-Part 2: Method using standard weight impact source".
[Standard concrete floor thickness] 150mm
[Type of impact source] Standard lightweight impact source and standard weight impact source impact force characteristics (1)
[Measurement points] 5 points

<Experimental result>
The test results comparing the product of the present invention with the conventional product are shown in [Table 1] and [Table 2] below. The determined frequency is an optimum frequency for evaluating the influence of noise.
[Table 1]
(Lightweight impact)
“Conventional product (directly attached to the floor support)”
Determination frequency Frequency (Hz) 63 125 250 500 1k 2k
150mm slab performance (dB) 60 67 68 70 71 72
Double floor reduction (dB) 3.1 1.1 0.6 5.7 21.6 37.9
"Product of the present invention (rubber hardness 50 degrees)"
Frequency (Hz) 63 125 250 500 1k 2k
150mm slab performance (dB) 60 67 68 70 71 72
Double floor reduction (dB) 12.5 15.4 20.3 27.5 38.1 49.6

[Table 2]
(Weight impact)
“Conventional product (directly attached to the floor support)”
Determination frequency Frequency (Hz) 63 125 250 500 1k 2k
150mm slab performance (dB) 60 67 68 70 71 72
Double floor reduction (dB) -1.6 -4.4 -2.6 0.2 5.7 6.9
"Product of the present invention (rubber hardness 50 degrees)"
Frequency (Hz) 63 125 250 500 1k 2k
150mm slab performance (dB) 60 67 68 70 71 72
Double floor reduction (dB) 0 4.6 12.5 14.2 15.2 15.8

  From the above results, the product of the present invention has an excellent noise reduction effect, and in particular, a high effect is obtained at the determined frequency.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. The shape of the top plate 1 is not limited to a rectangular shape, but can be changed to a circle or a polygon.

  Further, the floor receiving top plate 1 can be made of a plastic material as well as wood, and the material used for the screw rod 2 and / or the base member 3 is not limited to polypropylene (PP), but also polyethylene (PE) or polyethylene terephthalate. Thermoplastic resins such as (PET) and vinyl chloride can be employed.

  Furthermore, a screw thread can be formed on the main body portion of the buffer member 4 to be attached to the screw rod 2, and at this time, it can be surely sealed with an adhesive.

  Furthermore, the contact surface between the floor receiving top plate 1 and the buffer member 4 is not limited to a flat one, and may be one that can be hermetically sealed in an uneven fitting type. Belong to the scope.

1 Floor receiving plate 2 Screw rod
21 Screw screw
22 Top opening
23 Convex
24 Flange 3 Base member
31 Nut screw 4 Buffer member
41 Through hole
42 Fastening hole
43 Ribs
44 Snap fastener 5 Fastening member S Space

Claims (8)

A floor receiving top plate 1 that supports and fixes the floor material is provided at the upper end, and a base member 3 that is placed on the slab is disposed at the lower end,
A rod-shaped plastic hollow molded body in which a screw rod 2 having a screw screw 21 formed on its outer periphery is screwed into a nut screw portion 31 formed on the base member 3 and rotated forward and backward to thereby form the floor material. While the level is adjustable up and down
The shock-absorbing member 4 is a cap member formed of an elastically deformable material, and has a through-hole 41 extending up and down. The shock-absorbing member 4 is fixedly attached to the upper end opening 22 of the screw rod 2. And the upper surface of the buffer member 4 is fixed in a state of being urged and adhered to the lower surface of the floor receiving top plate 1,
When the screw rod 2 and the base member 3 are screwed together and the base member 3 is placed on the slab, a sealed space S is created inside the screw rod 2 and the base member 3. And
The shock from the upper surface of the floor receiving top plate 1 can be attenuated and absorbed by the elastic deformation of the buffer member 4 and can be attenuated and absorbed by the air compression in the space S accompanying the elastic deformation of the buffer member 4. Characteristic shock absorbing floor post.   The buffer member 4 is formed with a fastening hole 42 extending vertically, and the fastening member 5 is inserted into the fastening hole 42 to fasten the floor receiving top plate 1 and the buffer member 4 in close contact with each other. The shock absorbing floor post according to claim 1, wherein the shock absorbing floor post can be fixed.   The shock absorbing floor post according to claim 1 or 2, wherein the upper surface of the buffer member (4) is formed flat and can be pressed against the lower surface of the floor receiving top plate (1) in a biased and close contact state.   4. Both the members can be fixed by press-fitting the main body of the buffer member 4 into the inner peripheral surface of the screw rod 2 in a tightly fitted state and being attached thereto. Shock-absorbing floor post as described in   Convex portions are formed on the outer peripheral surface of the main body portion of the buffer member 4 or the inner peripheral surface of the screw rod 2, and both the members can be fixed by press-fitting the buffer member 4 into a tightly fitted state and mounting it. The shock absorbing floor post according to claim 4.   The shock absorbing floor post according to any one of claims 1 to 5, wherein a rib 43 is provided along at least a part of the surface of the buffer member 4 along the axial direction.   A flange 24 is formed at the upper end of the screw rod 2, while a latching hook 44 is formed at the lower end of the buffer member 4. The hooking hook 44 is elastically deformed and covered with the flange 24. The shock absorbing floor post according to any one of claims 1 to 6, wherein the shock absorbing floor post can be worn.   The shock absorbing floor post according to any one of claims 1 to 7, wherein the buffer member 4 is made of natural rubber or synthetic rubber having a rubber hardness of 50 to 90.

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