JP2003056100A - Vibration absorber using tension member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration absorber which is simple and can cope with vibrations at frequencies in a wide range from a low frequency in a large amplitude as in case of an impact load generated when a child jumps on a building floor, to a high frequency as in the case of falling of a spoon. SOLUTION: The vibration absorber 1 is formed by connecting a tension member 6 to a shape retainer 2. The tension member 6 is formed of an expandable plastic or a rubber elastic body. The shape retainer 2 includes a substrate 3 formed of a metal or a rigid plastic, and legs 4 arranged on both sides of the substrate 3 in a manner being spaced an interval away from the same, for mounting the tension member 6 thereon. Then, the central portion of the tension member 6 between the legs 4 serves as a vibration transmitting portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to vibration absorption of building floors, machinery and the like.

[0002]

2. Description of the Related Art Rubber or leaf springs are generally used for absorbing vibration. The anti-vibration performance of rubber is suitable for medium and high frequency vibrations, but low frequency performance is low. On the other hand, the leaf spring is suitable for a low-frequency impact with a large displacement amount, and has a low vibration-proof performance at a high frequency.

Further, since the vibration-proof material using the vibration-proof rubber is generally used by deforming the spring in the compression direction, only a part of the deformation of the spring absorbs the vibration, and the other is the other. Since the vibration is transmitted to the support material of the vibration isolator, the performance of the material is reduced.

Therefore, for example, like a condominium floor,
While there is a limit to the amount of sinking due to the feeling of lightness on the floor,
When it is necessary to handle both heavy floor impact, which is a big impact such as children jumping, and lightweight floor impact such as when dropping a spoon, it is difficult to request both advanced vibration isolation performance with a simple method. Is the current situation.

[0005]

The problem is that there is no simple vibration absorber that accommodates both low to high frequency vibrations.

[0006]

[Means for Solving the Problems] By roughly dividing vibration into low frequency and medium and high frequencies and using a vibration absorbing method suitable for each frequency, a shock absorber capable of coping with the entire frequency range is provided. . The method uses a shape retainer that supports a thin and flexible tension member on both sides, and applies vibration to the central portion of the tension member.

Either a tension material or a shape-holding member expands or contracts or deforms in response to a large frequency of low amplitude,
The medium and high frequencies are supported by the vibration absorption performance of the tension material and the shape-retaining material that can be freely controlled.

The joining of the tensile member may be performed by joining it to the shape-retaining member having slack or joining it in a tensioned state, and it is selected in relation to the vibrating member. Incidentally, the explanatory drawing shows the case of the tension state.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Legs are provided on both sides of a substrate using metal, plastic, rubber-like elastic body, etc., which are spring materials, and the leg is made to support a thin flexible material. , Using the vibration absorber that arranges the vibration body in the center of the tension member, the shape deformation of the shape holding body different from the load direction,
Also, high vibration isolation performance is obtained due to the vibration absorption performance of any material.

As the shape-retaining body, a metal / plastic / rubber-like elastic body is used. The material of the tension material is glass fiber or carbon fiber in the case of sheet shape, these are solidified with plastic or rubber elastic body, plastic film is used, and in the case of molded products, the shape is maintained using plastic or rubber elastic body Use a thin shape between the joints with the body.

[0011]

EXAMPLE FIG. 1 shows a vibration absorber in which a tensile member is bonded to one side of a shape-retaining body. FIG. 1 (a) shows that a sheet-shaped tension member 6 is erected and joined to a leg 4 of a shape-holding body 2 in which both ends of a substrate 3 made of metal or hard plastic are formed into a substantially semicircular shape and the ends are vertically formed. The material 8 for the vibrating body 7 is provided in the central portion of the material 6.
The tension member 6 and the substrate 3 have a gap that does not come into contact during vibration.

The shape-retaining body 2 is hardly deformed, and when the amplitude is large, the tension member 6 expands and contracts to absorb vibration. The vibration receiving member 8 is attached to the center of the tension member 6 so that the force acts evenly on the left and right. A small convex object 5 is provided on the leg 4 to reduce the transmission of vibration. Further, if a rubber-like elastic body is used for the receiving member 8, it is possible to obtain vibration absorption freely.

FIG. 1B is a partial cross-sectional view, in which a rubber-like elastic body is used for the legs 9 and a substrate 10 made of a hard plate such as metal is joined between the legs 9 to form a shape-holding body. When a load is applied, the upper part of the leg 9 is pulled by the tension member 11 and is deformed as shown by the dotted line to cope with vibration of a large amplitude and the material freely absorbs vibration.

FIG. 1 (c) shows a vibration absorber 12 when it is firmly fixed to a support structure. A tension member 16 is erected and joined to a leg 15 of a shape retainer 13 in which both ends of a substrate 14 are curved upward. It is a thing. Holes 18 and 19 are provided in the tension member 16 and the base plate 14 at the same position in the vertical direction, and screws and bolts are penetrated into the holes 19 of the base plate 14 and fastened using the holes 18 provided in the tension member as working holes. The tension member 16 may be formed in an annular shape to cover the shape retaining body.

In FIG. 1 (d), a spring member is used to extend diagonally from both ends of the substrate 22 to form a leg 23, and a tension member 25 is attached to the end portion.
Shape holding body 21 provided with a bent piece 24 for joining
A vibration absorber 2 in which a sheet-like tension member 25 is erected and joined to
It is 0.

A receiving member 26 for joining the vibrating body is attached to the center of the tension member 25, and a hole 27 for attaching to the supporting structure member is provided in the center of the substrate 22. Receiving material 26
In the case of widening the width, the section is T-shaped, and a portion for only the tension member is provided between both sides of the receiving member and the leg. Although the legs are standing upright, they may be vertical.

When plastic is used for the legs, a hollow extruded material is used in addition to the wall thickness depending on the magnitude of the load. For fastening the tension material, in addition to adhering to the shape-retaining body, the bent piece should be made into a small arc shape on the inside, and it should be fastened to the outside of the leg with adhesive. The method of crimping and sandwiching by another member is used.

The vibration absorber 29 shown in FIG.
0 is made of a hard plastic molding material, a part of which is molded into a convex shape 31 and a vibrating body is attached to the central portion via a receiving material 32. The convex portion 31 is deformed at the time of loading to become a spring. The shape retainer is the same as that shown in FIG.

FIG. 1 (f) shows a shape-retaining member 35 made of a hard cylindrical material having a bent piece 36 for joining a tensile member at the top and a projection 37 in point contact with the support structure at the lower end.
Further, a tension member 38 is stretched obliquely downward from the bent piece 36 toward the center portion, and a vibrating body 40 is provided in the center portion via a receiving member 39.
Is a vibration absorber 34 to which is attached.

The position deviation preventing member 41 is for preventing the vibrating body 40 from largely moving sideways. The lower end is fitted to the shape holding body 35 so as to be sandwiched from the left and right, and the upper part is placed above and below the vibrating body 40. Attached in a slidable state.

FIG. 2 shows a vibration absorber when a rubber-like elastic body or plastic is used for the shape-retaining body. Figure 2 (a)
In the vibration absorber 43, the legs 46 for supporting the tension member 48 are diagonally erected on both sides of the substrate 45, the tension member 48 is erected and joined to the top of the leg 46, and the vibration member is provided at the center. The receiving material 49 for joining is attached. In the case of a large vibration, the tensile member 48 and the shape-retaining member 44 are deformed as indicated by the dotted line with respect to the force of the tensile member sinking downward.

FIG. 2B shows the substrate 52, the legs 54, and the tension member 5.
5. The receiving member 56 for joining the vibrating body is integrally molded, and the tensile member 55 is thin so that only the tensile force acts. The receiving member 56 is provided with a vibrating body mounting hole 57, and the substrate 52 is provided with a supporting structure material mounting hole 53. In addition, it is better that the tension material has a certain length,
If it is in a tensioned state, it may have a V groove shape.

In FIG. 2C, the substrate 59 of the vibration absorber of FIG. 2B is used as a target axis, and the leg 60a, the tension member 61a, and the receiving member 62a for joining the vibration members are provided on the opposite side to form an integral body. The vibration absorber 58 is formed and is suitable when vibration with a large amplitude is estimated. The upper receiving member 62 has a hole 63 for attaching a vibration body, the lower receiving member has a hole 63a for attaching a vibration absorber to a support structure, and the substrate 59 has a work hole 64.

FIG. 2 (d) shows a rubber-like elastic body 65 and an anti-tensile member 66 integrated with each other, which is used when the rubber-like elastic body is insufficient in strength when used as a tension material. And suppress elongation.

As the tension preventive material 66, in addition to glass, carbon and metal fibers, a plastic mesh sheet or a molded product is used. As a method of integration, the rubber-like elastic body 65 may be arranged inside or may be attached to the surface as shown in the figure.

FIG. 3 shows a vibration absorber in which tension members are stretched on both sides between the legs of the shape retainer. In FIG. 3A, a shape-retaining body 69 made of metal or hard plastic in which discontinuous substantially cylindrical legs 71 are provided on both sides of a substrate 70 is used, and tension members 72 are arranged on both sides of the substrate 70 to form legs. In the vibration absorber 68, which is erected and joined to 71, the receiving member 73 for attaching the vibration body to the central portion of the tension member 72 and the receiving member 74 for attaching the vibration absorber to the support structure member are joined to the tension member on the opposite side. is there. The receiving member 73 is provided with a mounting hole 75. Since the legs have a discontinuous cylindrical shape, they are deformed into springs when a large amplitude vibration is applied.

FIG. 3 (b) shows a shape-retaining body using another form of leg, in which a substrate 78 is integrated with the central portion of a leg 79 having a U-shaped cross section with bent ends to form a shape-retaining body 77. It is a vibration absorber 76 in which tension members 80 are attached to both surfaces and receiving members 81 and 82 are joined to the central portion.

The vibration absorber 83 shown in FIG. 3 (c) is a method for improving the vibration absorbing performance, and the vibration absorbers 84,
By sandwiching the interposing material 86 in the middle of 85, the upper vibration absorber 84
The vibration receiving member 94 is joined to the top.

The shape-holding body 87 is provided with a leg 90 also in the center of the substrate 88 in order to reduce the amplitude, and the substrate 88 and the leg 8 are provided.
The shape-holding body 87 is covered in tension by a sheet-like tension member 91 using a plastic or rubber-like elastic body having a hollow portion in 9, 90. The hollow 92 is for improving the vibration absorbing performance and reducing the weight by the deformation of the legs 89 and 90. still,
The vibration absorber may be used alone, and is suitable when a large receiving area is required or when the sinking amount with respect to the load is reduced.

The interstitial material 86 is made of a hard material or a rubber-like elastic material and both ends thereof are formed into a cylindrical support material 96, and this portion is pulled on the central position between the legs 89 and 90 of the vibration absorbers 84 and 85. It is arranged on the material 91. The vibration receiving member 94 has two convex portions 95 on the lower side, and is joined to the tension member on the center position of each leg of the upper vibration absorber 84.

Substrate 88 between legs 89 and 90 and tension member 91
Has a gap 93 that does not come into contact with the substrate 88 even if the tension member 91 is lowered by vibration. The vibration absorber having such a structure has high performance because the residual vibration of the vibration absorber 84 at the upper stage is absorbed by the vibration absorber 85 at the lower end.

The tension member is fastened by a method of adhesively joining to the leg, a method of forming an annular shape by heat welding or pressure bonding with a metal between the leg members, and a ring material slightly larger than the shape-retaining member using a heat shrinkable plastic film. As the above, a method of arranging a shape retaining body inside and heating is used. If heat-shrinkable plastic is used as the tension material, the work of fastening the tension material to the legs such as adhesion is not required, and the productivity of the vibration absorber can be improved.

The vibration absorber 98 of FIG. 4 is an extension of the vibration absorber of FIG. 2 (b). Leg 1 leaving substrate 99
00, the tension member 101, and the vibration receiving member 102 are discontinuous by providing a cutting portion 103 at a position that serves as an appropriate vibration absorber, and locally deforms when the load moves or is unevenly distributed, and the influence on the whole is reduced. is doing. An attachment suitable for the vibrating body is attached to the vibration receiving member 102 as needed and used.

FIG. 5 shows an attachment which is attached to a load receiving material, and is an example of a shape suitable for the material to be attached. Figure 5 (a)
Is a portion 10 of the vibration receiving member 104 whose bottom is wide in plan view.
5 is used when the lower end of the bolt 106 having 5 is joined and fixed by tightening with a nut.

FIG. 5B shows an attachment in which a pipe with a seat 107 having an internal thread is joined to the vibration receiving member 104, and the height of the mounting member can be adjusted by rotating the bolt 108. There is also an opening at 104. A circular vibrating body mounting member 10 is provided on the top of the bolt 108.
9 is attached, but the shape is replaced with one suitable for the attachment material.

FIG. 5 (c) shows an attachment 110 having a U-shaped bend attached to the load receiving member 104.
Used when attaching wooden or steel timber, use the hole 111
Secure with nails or bolts.

FIG. 6 shows a belt-shaped vibration absorber unit 113 in which the vibration absorber of FIG. 3 (a) is attached at predetermined intervals to a grooved steel 114 as a connecting material. The connecting member 114 has a U-shaped cross section by bending both sides of the long side so as not to be bent or bent in the length direction. The number and intervals of the vibration absorbers 116 to be attached depend on the application. The vibration absorber unit 113 has a vibration receiving member joined and fixed to a channel steel.

The support structure is fixed with screws or the like from the working holes 115 made of grooved steel, which are provided at the same positions as the holes of the adhesive or the vibration receiving material. The connecting member 114 can be made of wood,
In this case, the vibration absorber 116 is attached to the groove-shaped groove portion by adhesion or screws.

FIG. 7 shows the vibration absorber 119 of FIG.
The vibration absorber unit 117 is attached to the face material 118 at predetermined intervals. In the vibration absorber 117, the vibration receiving material of the vibration absorber is fixed to the position where the bending of the face material 118 is equal to or less than a predetermined interval with an adhesive or a screw.

FIG. 8 shows the case where the vibration absorber is used on the building floor. FIG. 8A shows that when the floor slab 121 such as concrete is laid on the support structure 126 of H-shaped steel, the vibration absorber 122 extending from FIG. 3A is mounted on the support structure 126 and the slab 121 is attached. I'm laying. For joining the slabs, bolts 125 are mounted on the vibration receiving material 123 of the vibration absorber 122 at the corners of the slab 121, and the bolts 1
A metal object 124 for preventing the slab 121 from moving is fixed to the 25. The vibration absorber 122 and the support structure 126 are fixed by adhesion.

FIG. 8 (b) shows a case where the double-floor of a building is used.
The vibration absorber 127 shown in FIG. 8C is used at the 29 support points.

In the vibration absorber 127 of FIG. 8C, a mounting support 131 made of a particle board or the like is integrated on the top of the height-adjustable bolt 130 of FIG. 5B on the vibration support. It is a thing.

The face material 129 and the mounting support material 131 are nail screws,
Join by adhesion or the like. The support floor 128 is used not only for concrete but also for ALC, wooden floor, etc. by the same method, and is fixed by adhesion or the like.

The vibration absorbing unit 132 shown in FIG.
It shows the case where it is used for the floor of a wooden building, in which the attachment of FIG. 5 (c) is integrated on the grooved steel 135 of the strip-shaped connecting unit unit of FIG. 6, and the joist supporting the floor material 136 is attached to the attachment. 137 is installed. The connection unit 132 is attached to the beam 133 with screws from the attachment holes of the vibration absorber 134, and the joists 137 are nailed from the attachment holes.

[0045]

INDUSTRIAL APPLICABILITY According to the present invention, the tensile material is a non-stretchable material such as glass or carbon fiber, a stretchable material such as a plastic sheet or a rubber-like elastic body, a metal that does not deform into a shape-retaining body, or a deformable material Since a leaf spring and a rubber-like elastic body are used in combination, it is possible to cope with the vibration conditions.

For medium and high frequencies, the tension material is in a state where it easily vibrates in a tensioned state, so that the vibration amount is large and the energy loss is large. Also, a stretchable material such as a plastic sheet is used for the tension material, or a leg is used. By using a rubber-like elastic material as the material, it is possible to obtain the vibration damping property due to the vibration absorbing performance of the material.

On the other hand, with respect to a large vibration having a low frequency and a large amplitude such as a large impact, unlike the vibration in a state where the vibration damping material is compressed and restrained, the tension member is pressed downward. Along with this, as shown by the dotted lines in the drawings, the leg material deforms inward and absorbs the shock.

As described above, since the vibration absorber of the present invention responds to low to high frequencies in different ways, it is possible to avoid the heavy impact of low frequencies when a child jumps, which is a problem on the floor of an apartment. In addition, it is possible to obtain high vibration isolation performance against a wide range of solid transmission vibrations, including high-frequency light impacts when dropping a spoon.

The vibration absorber according to claim 5 is a vibration absorber which is suitable for a case where the area of the building is large, such as concrete or ALC floor slab, and weight, or when the vibration moves, and the flexure of the floor slab is stabilized. Can be one.

Since the vibration absorber according to claim 6 is a floor base material, it is sufficient to put a finishing floor material on the floor surface material, which improves the productivity at the site and shortens the construction period and reduces the cost. .

In the vibration absorber according to claim 7, when the individual vibration absorbers are directly attached to the support structure based on the module such as the floor of the building, it takes a long time to perform positioning and attachment. Since the vibration absorber of is attached, the number of positioning points can be reduced and the mounting can be facilitated, which improves the productivity in the field and shortens the construction period and cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a vibration absorber.

FIG. 2 is a perspective view of a vibration absorber.

FIG. 3 is a perspective view of a vibration absorber.

FIG. 4 is a perspective view of the extended vibration absorber.

FIG. 5 is a perspective view of the attachment.

FIG. 6 is a perspective view of a vibration absorber unit in which a vibration absorber is integrated with grooved steel.

FIG. 7 is a perspective view of a vibration absorber unit in which a vibration absorber is integrated with a planar material.

FIG. 8 is a perspective view when a vibration absorber is used to support the building floor.

[Explanation of symbols]

1: Vibration absorber 2: Shape retainer
3: substrate 4: legs 5: convex object
6: Tensile material 7: Vibrating body 8: Receiving material
9: leg 10: substrate 11: tension material 1
2: Vibration absorber 13: Shape retainer 14: Substrate 1
5: Leg 16: Tensile material 17: Receiving material 1
9: hole 20: vibration absorber 21: shape retainer 2
3: Leg 24: Bent piece 25: Tensile material 2
6: Receiving material 29: Vibration absorber 30: Tensile material 3
1: Convex shape 32: Receiving material 34: Vibration absorber 3
5: Shape retainer 36: Bent piece 37: Protrusion 3
8: Tensile material 39: Receiving material 40: Vibrating body 4
1: misregistration prevention material 43: vibration absorber 44: shape retainer 4
5: Substrate 46: Leg 48: Tensile material 4
9: Receiving material 50: Vibration absorber 51: Shape retainer 5
2: substrate 53: hole 54: leg 5
5: Tensile material 56: Receiving material 57: Hole 5
8: Vibration absorber 59: Substrate 60: Leg 6
1: Tensile material 62: Receiving material 64: Hole 6
5: Rubber-like elastic body 66: Tensile preventive material 68: Vibration absorber 6
9: Shape retainer 70: Substrate 71: Leg 7
2: Tensile material 73: Receiving material 75: Hole 7
6: Vibration absorber 77: Shape retainer 78: Substrate 7
9: leg 80: tension material 81: receiving material 8
3: Vibration absorber 84: Vibration absorber 85: Vibration absorber 8
6: Interstitial material 87: Shape retainer 88: Substrate 8
9: Leg 90: Leg 91: Tensile material 9
2: Hollow 93: Gap 94: Vibration receiving material 9
5: convex shape 96: support material 98: vibration absorber 9
9: Substrate 100: Leg 101: Tensile material 10
2: Receiving material 103: Cutting part 104: Receiving material 10
6: Bolt 107: Pipe with seat 108: Bolt 10
9: Mounting member 110: Attachment 111: Hole 11
3: Vibration absorber unit 114: Channel steel 115: Working hole 11
6: Vibration absorber 117: Vibration absorber unit 11
8: Face material 119: Vibration absorber 121: Floor slab 12
2: Vibration absorber 123: Receiving material 124: Movement prevention hardware 12
5: Bolt 126: Support structure material 127: Vibration absorber 12
9: Face material 130: Bolt 131: Receiving material 13
2: Vibration absorber unit 133: Wooden beam 134: Vibration absorber 13
5: Channel steel 136: Floor material 137: Joist

Claims (8)

[Claims] Claim: What is claimed is: 1. A tension member is joined to a shape-retaining body having legs on which tension members are installed with a gap being provided on both sides of the substrate. Absorber. 2. A tension member is erected on a shape-retaining body in which a leg for laying a tension member is provided on both sides of the substrate with a gap on both sides of the substrate, and a central portion between the legs of the tension member serves as a vibration transmitting portion. Claim 1
Vibration absorber. 3. The vibration absorber according to claim 1 or 2, wherein a rubber-like elastic body having a cross-sectional shape in which both end portions are thin and a central portion is thick is used as a tension material. 4. The vibration absorber according to claim 1 or 2, wherein heat-shrinkable plastic is used as the tension material. 5. The vibration absorber according to any one of claims 1, 2 and 3, wherein the shape retainer is extended in a joining line direction between the substrate and the leg. 6. A vibration absorber unit in which a plurality of vibration absorbers according to any one of claims 1, 2 and 3 are attached to a face material at predetermined intervals. 7. A vibration absorber unit in which a plurality of vibration absorbers according to any one of claims 1, 2 and 3 are attached to an elongated connecting body at predetermined intervals. 8. A vibration in which the vibration absorber according to claim 1, 2 or 3 is arranged at a predetermined interval on a support structure or a support floor, and an upper floor is provided on the vibration absorber. Absorption bed.