JP7286347B2 - Bearing mechanism and anti-vibration floor structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bearing mechanism and an anti-vibration floor structure.

In floating floors intended for vibration isolation as shown in Patent Document 1 below and FIG. ing. When the support spring is fixed to the concrete floor, the support spring is dragged in the contraction direction due to drying shrinkage of the concrete (see FIG. 9A). In general, it is assumed that the support spring deforms only in the axial direction (the direction of the supporting force), so if deformation occurs in the direction orthogonal to the axis, there is a possibility that the predetermined performance will not be exhibited. As a method to prevent this, a bearing material that can follow horizontal displacement is installed between the support spring and the concrete floor, and the horizontal displacement due to drying shrinkage is handled by the displacement of the bearing material. (See FIG. 9(b)).

JP 2011-17396 A

In a floating floor structure in which the above bearing members are installed, it is desired that the bearing members be smoothly displaced in the horizontal direction with a small resistance force.

Therefore, the present invention has been made in view of the above circumstances, and proposes a support mechanism and a vibration-proof floor structure that can slide (roll) smoothly in the horizontal direction with a small resistance force.

In order to achieve the above object, the present invention employs the following means.
That is, a support mechanism according to the present invention is a support mechanism provided between a spring unit supported by a lower body and an upper body, comprising: a lower member provided along the upper surface of the spring unit; A lower roller member provided along the upper surface of the and rotatable about the axis with the first direction along the horizontal plane as the axial direction; and a rolling medium plate provided along the upper part of the lower roller member an upper roller member provided along the upper surface of the rolling intermediate plate and rotatable around the axis with a second direction orthogonal to the first direction along the horizontal plane as an axis direction; an upper member provided along an upper portion of the roller member, wherein the lower member is fixed to the upper surface of the spring unit, the upper member is fixed to the upper body, and the upper surface of the lower member and the The lower surface of the intermediate rolling plate is arranged to abut against the outer peripheral surface of the lower roller member, the lower surface of the upper member and the upper surface of the intermediate rolling plate are arranged to abut against the outer peripheral surface of the upper roller member , and the A hard plate is provided so as to be able to contact the outer peripheral surface of the roller portion of the lower roller member and the outer peripheral surface of the roller portion of the upper roller member . At this time, the relative displacement between the roller member and the member that contacts the upper and lower surfaces of the roller member is 1/2 of the relative displacement that occurs between the contact members.

In the support mechanism configured in this manner, when at least one of the lower body and the upper body is about to be displaced in the first direction, the upper roller member rotates around the axis with the second direction as the axial direction. As the upper roller member rotates, the lower surface of the upper member and the upper surface of the intermediate rolling plate slide (roll) along the outer peripheral surface of the upper roller member, and the upper member and the intermediate rolling plate slide (roll). A relative displacement in the direction occurs.
Further, when at least one of the lower body and the upper body is about to be displaced in the second direction, the lower roller member rotates around the axis with the first direction as the axial direction. As the lower roller member rotates, the upper surface of the lower member and the lower surface of the intermediate rolling plate slide (roll) along the outer peripheral surface of the lower roller member, and a second roller is formed between the lower member and the intermediate rolling plate. A relative displacement in the direction occurs.
Thus, displacement of at least one of the lower body and the upper body causes rotation of the upper roller member and the lower roller member, resulting in slippage in the first direction between the upper member and the rolling intermediate plate. Displacement and sliding (rolling) displacement in the second direction occur smoothly between the lower member and the rolling mid-plate.

Further, in the support mechanism according to the present invention, the lower roller member includes a plurality of lower roller portions arranged with intervals in the second direction while the axial direction is directed in the first direction, and the plurality of It is preferable to have a lower roller supporting portion that supports both ends of the lower roller portion in the first direction.

In the support mechanism configured in this manner, since a plurality of lower roller portions are arranged, a large contact surface between the upper surface of the lower member and the lower surface of the rolling intermediate plate and the lower roller portion can be ensured. Therefore, a large load capacity can be obtained even with a small-diameter roller, and relative displacement in the second direction between the lower member and the rolling intermediate plate occurs more smoothly and reliably.
Further, since the lower roller member is a product in which a plurality of lower roller portions are arranged, it is possible to easily install the plurality of lower roller portions.

Further, in the support mechanism according to the present invention, the lower member includes a lower plate provided along the upper surface of the spring unit and connected to the upper body so as to be displaceable in the first direction and the second direction; a rolling lower plate provided along the upper surface of the lower plate and having a lower plate groove formed on the upper surface for accommodating the lower portion of the lower roller member; An intermediate plate lower groove is formed to accommodate an upper portion of the lower roller member, and at least one of the rolling lower plate and the rolling intermediate plate moves along the outer periphery of the lower roller portion as the lower roller portion rotates. It may be displaceable in the second direction by sliding on the surface.

In the bearing mechanism configured as described above, the lower portion of the lower roller member is accommodated in the lower plate groove of the rolling lower plate, and the upper portion of the lower roller member is accommodated in the intermediate plate lower plate groove of the intermediate rolling plate. there is Therefore, the lower roller member does not rotate in any direction other than the direction of rotation about the axis that faces the first direction, and the relative displacement between the lower rolling plate and the intermediate rolling plate is displaced in a direction other than the second direction. is suppressed.

Further, in the support mechanism according to the present invention, the upper roller member includes a plurality of upper roller portions arranged with intervals in the first direction while the axial direction is directed in the second direction, and the plurality of and an upper roller supporting portion that supports both ends of the upper roller portion in the second direction.

In the bearing mechanism configured in this manner, since a plurality of upper roller portions are arranged, a large contact surface between the lower surface of the upper member and the upper surface of the intermediate rolling plate and the upper roller portion can be ensured. Therefore, even a roller with a small diameter can withstand a large load, and the relative displacement in the first direction between the upper member and the intermediate rolling plate occurs more smoothly and reliably.
Moreover, since the upper roller member is a product in which a plurality of upper roller portions are arranged, it is possible to easily install the plurality of upper roller portions.

Further, in the support mechanism according to the present invention, the upper member includes an upper plate fixed to the lower surface of the upper body and provided along the lower surface of the upper plate, and the lower surface can accommodate the upper portion of the upper roller member. and a rolling upper plate having an upper plate groove formed therein, and an intermediate plate upper groove capable of accommodating the lower part of the upper roller member is formed on the upper surface of the rolling intermediate plate, and the upper roller At least one of the upper rolling plate and the middle rolling plate may slide on the outer peripheral surface of the upper roller portion to be displaced in the first direction as the roller portion rotates.

In the bearing mechanism constructed in this manner, the upper portion of the upper roller member is accommodated in the upper plate groove of the rolling upper plate, and the lower portion of the upper roller member is accommodated in the intermediate plate upper groove of the rolling intermediate plate. . Therefore, the upper roller member does not rotate in any direction other than the rotation direction about the axis that faces the second direction, and the relative displacement between the upper rolling plate and the intermediate rolling plate is displaced in a direction other than the first direction. is suppressed.

Further, the support mechanism according to the present invention may include a first direction restricting portion that restricts relative displacement in the first direction between the lower member and the intermediate rolling plate.

In the support mechanism configured in this manner, the first direction restricting portion restricts the relative movement in the first direction between the lower member and the intermediate rolling plate. Therefore, when a force displacing at least one of the lower body and the upper body in the first direction acts, there is no relative displacement between the other members in the first direction. encourages relative displacement in the first direction.

Further, the support mechanism according to the present invention may include a second direction restricting portion that restricts relative displacement in the second direction between the upper member and the intermediate rolling plate.

In the support mechanism configured in this manner, the second direction restricting portion restricts the relative movement in the second direction between the upper member and the intermediate rolling plate. Therefore, when a force that displaces at least one of the lower body and the upper body in the second direction acts, there is no relative displacement between the other members in the second direction, and there is no relative displacement between the lower member and the intermediate rolling plate. encourages relative displacement in the second direction.

Further, the anti-vibration floor structure according to the present invention comprises a lower body installed on a foundation, an upper body arranged above the lower body on which a floating floor is installed, and a spring unit supported by the lower body. , a bearing mechanism according to any one of the preceding claims arranged between the spring unit and the upper body, the spring unit comprising a lower plate fixed to the lower body; and a support spring disposed between the lower plate and the upper plate, wherein the lower member comprises: a lower plate provided along the upper surface of the spring unit supported by the body and connected to the upper body so as to be displaceable in the first direction and the second direction; and a rolling lower plate having a lower plate groove formed on the upper surface thereof so as to accommodate the lower portion of the lower roller member.

In the anti-vibration floor structure configured in this manner, when at least one of the lower body and the upper body is about to be displaced in the first direction, the upper roller member rotates around the axis with the second direction as the axial direction. As the upper roller member rotates, the lower surface of the upper member and the upper surface of the intermediate rolling plate slide (roll) along the outer peripheral surface of the upper roller member, and the upper member and the intermediate rolling plate slide (roll). A relative displacement in the direction occurs.
Further, when at least one of the lower body and the upper body is about to be displaced in the second direction, the lower roller member rotates around the axis with the first direction as the axial direction. As the lower roller member rotates, the upper surface of the lower member and the lower surface of the intermediate rolling plate slide (roll) along the outer peripheral surface of the lower roller member, and a second roller is formed between the lower member and the intermediate rolling plate. A relative displacement in the direction occurs.
Thus, displacement of at least one of the lower body and the upper body causes rotation of the upper roller member and the lower roller member, resulting in slippage in the first direction between the upper member and the rolling intermediate plate. (Rolling) displacement and sliding (rolling) displacement in the second direction between the lower member and the rolling intermediate plate occur smoothly.

According to the bearing mechanism and the anti-vibration floor structure according to the present invention, it is possible to smoothly slide (roll) in the horizontal direction with a small resistance force, and to apply almost no horizontal force to the support springs.

It is a figure which shows the structure of the anti-vibration floor structure which concerns on one Embodiment of this invention. 1 is an exploded perspective view of part of a bearing mechanism according to an embodiment of the invention; FIG. 1 is a plan view of a bearing mechanism according to an embodiment of the invention; FIG. (a) A view in the direction of arrow A in FIG. 3, and (b) a cross-sectional view taken along the line XX in FIG. (a) is a view from the arrow B in FIG. 3, and (b) is a cross-sectional view taken along the line YY in FIG. FIG. 2A is a schematic view of a bearing mechanism according to an embodiment of the present invention with a top rolling plate removed, and FIG. 4B is a schematic view with a middle rolling plate removed. FIG. 4 is a perspective view showing configurations of a lower roller member and an upper roller member of the support mechanism according to one embodiment of the present invention; It is a figure which shows the structure of the conventional anti-vibration floating floor. The movement of the support spring due to drying shrinkage of the concrete floor (floating floor) is shown, (a) showing the case where no bearing material is installed between the support spring and the concrete floor, and (b) the movement of the support spring and the concrete floor. It shows a case where a bearing material is installed between them.

An anti-vibration floor structure according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 7. FIG.
FIG. 1 is a diagram showing the configuration of a vibration-isolating floor structure according to one embodiment of the present invention.
As shown in FIG. 1, the anti-vibration floor structure 100 includes a lower capital (lower body) 91 installed on a base mat (not shown), an upper capital (upper body) 93 on which a floating floor 92 is installed, and a lower A spring unit 94 supported by the capital 91 and a roller bearing (bearing mechanism) 101 provided between the spring unit 94 and the upper capital 93 are provided.
For convenience, of the horizontal directions, the lateral direction of the paper surface shown in FIG. 1 is referred to as the X direction (first direction), and the horizontal direction perpendicular to the X direction is referred to as the Y direction (second direction).

The spring unit 94 has a lower plate 95 , an intermediate plate 96 , an upper plate 97 , a spring body (support spring) 98 and a connecting pipe 99 . The spring body 98 is configured by, for example, installing a plurality of disc springs in the vertical direction. A connecting pipe 99 connects the intermediate plate 96 and the upper plate 97 .

The lower capital 91 is provided with an anchor bolt 91a. A bolt 91b inserted through the mounting hole 95h of the lower plate 95 is screwed into the cap nut 91c of the anchor bolt 91a.

The upper capital 93 is provided with an anchor bolt 93a. A bolt 97b inserted through an insertion hole 97h of the upper plate 97 is screwed onto a cap nut 93c of an anchor bolt 93a.

An insertion hole 97h formed in the upper plate 97 has a sufficiently large clearance c1 around the outer periphery of the shaft portion of the bolt 97a. Thereby, the upper plate 97 can be relatively displaced in the X direction and the Y direction with respect to the upper capital 93 . In other words, the upper plate 97 is connected to the upper capital 93 so as to be displaceable in the X and Y directions.

2 is an exploded perspective view of a portion of roller bearing 101. FIG.
As shown in FIG. 2, the roller bearing 101 includes a lower member 1, a lower flat roller (lower roller member) 3, a rolling mid-plate 40, an upper flat roller (upper roller member) 5, and an upper member 6. , a lower angle (first direction restricting portion) 81 (see FIG. 4(a), same below) and an upper angle (second direction restricting portion) 86 (see FIG. 5(a), same below). I have.

The lower member 1 is provided along the upper surface 97u of the spring unit 94 (see FIG. 1; the same applies hereinafter). The lower member 1 has a lower plate 10 (see FIG. 1; the same shall apply hereinafter) and a rolling lower plate 20 . In this embodiment, the upper plate 97 of the spring unit 94 (see FIG. 1; the same applies hereinafter) also serves as the lower plate 10 .

The rolling lower plate 20 is formed in a plate shape. The rolling lower plate 20 is fixed to the lower plate 10 with the plate thickness direction directed vertically.

FIG. 3 is a plan view of the roller bearing 101. FIG. 4(a) is a view in the direction of arrow A in FIG. 3, and FIG. 4(b) is a cross-sectional view taken along the line XX in FIG. 5(a) is a view in the direction of arrow B in FIG. 3, and FIG. 5(b) is a cross-sectional view taken along the line YY in FIG.
As shown in FIG. 4( a ), the rolling lower plate 20 is provided along the upper surface 10 u of the lower plate 10 .

As shown in FIG. 2, an upper surface 20u of the rolling lower plate 20 is formed with a lower plate groove 20g that is recessed downward. The lower plate groove 20g extends in the Y direction. In this embodiment, the lower plate groove 20g is formed over the entire length of the rolling lower plate 20 in the Y direction. A plurality of lower plate grooves 20g are formed at intervals in the X direction. In this embodiment, four lower plate grooves 20g are formed.

Lower plate grooves 20g are not formed at substantially the center in the X direction and the substantially center in the Y direction of the rolling lower plate 20, and bolt holes 20h are formed therethrough in the vertical direction.

A hard plate 26 is provided in each lower plate groove 20 g of the rolling lower plate 20 . The hard plate 26 has a shape corresponding to the lower plate groove 20g in plan view. The hard plate 26 is provided over the entire length of the lower plate groove 20g in the Y direction. The hard plate 26 is formed in a strip shape and fixed in the lower plate groove 20g. The hard plate 26 is arranged with its plate thickness direction facing the vertical direction.

The lower flat roller 3 has multiple flat rollers 30 . Each flat roller 30 is arranged along the upper surface 26 u of the hard plate 26 . The flat rollers 30 are arranged at four locations corresponding to the lower plate grooves 20g.

6A is a schematic view of the roller bearing 101 with the upper rolling plate 70 removed, and FIG. 6B is a schematic view of the roller bearing 101 with the intermediate rolling plate 40 removed. .
As shown in FIG. 6B, each flat roller 30 is arranged in the center of the corresponding hard plate 26 in the Y direction. In other words, the flat rollers 30 are not provided on both ends of the hard plate 26 in the Y direction in order to ensure a movable dimension.

FIG. 7 is a perspective view showing the configuration of the flat roller 30 used in the lower flat roller 3 and upper flat roller 5. FIG.
As shown in FIG. 7 , each flat roller 30 has a cage portion 31 (lower roller support portion) and a roller portion (lower roller portion) 36 . In this embodiment, the cage portion 31 is formed by pressing a steel plate into a substantially M shape. The flat roller 30 is inexpensive because it is a mass-produced product.

As shown in FIG. 2, in the lower flat roller 3, the flat roller 30 is arranged with its width direction in the X direction and its longitudinal direction in the Y direction.

As shown in FIG. 7 , the cage portion 31 has a flat portion 32 . The flat plate portion 32 is formed in a plate shape. The flat plate portion 32 is arranged with the plate thickness direction directed in the vertical direction.

A recess 33 recessed downward is formed at substantially the center of the flat plate portion 32 in the width direction. Bent wall portions 34 that are bent downward are formed at both ends of the flat plate portion 32 in the width direction.

A plurality of through holes 32h penetrating vertically are formed in the flat plate portion 32 and the concave portion 33 at intervals in the longitudinal direction. A roller portion 36 is provided in each through hole 32h. The roller portion 36 is supported by the cage portion 31 at both ends in the width direction with the width direction as the axial direction. The roller portion 36 is rotatable around the axis. In other words, in the lower flat roller 3, the roller portion 36 is rotatable about the axis with the axial direction thereof directed in the X direction.

An upper portion 36 u of the outer peripheral surface of the roller portion 36 protrudes upward from the upper surface 32 u of the flat plate portion 32 . A lower portion (not shown; hereinafter the same) of the outer peripheral surface of the roller portion 36 protrudes downward from the lower surface 33 d of the recess 33 . In other words, the upper portion 36 u and the lower portion of the roller portion 36 protrude from the cage portion 31 .

In this embodiment, the lower flat roller 3 has a small friction coefficient of about 0.001 to 0.0025 and a very thin height of about 2 to 7 mm.

As shown in FIG. 4( a ), the intermediate rolling plate 40 is arranged above the lower rolling plate 20 . As shown in FIG. 2, the rolling intermediate plate 40 is formed in a plate shape. The intermediate rolling plate 40 is arranged with the plate thickness direction facing the vertical direction.

An intermediate plate lower groove 40g recessed upward is formed in the lower surface 40d of the rolling intermediate plate 40. As shown in FIG. The intermediate plate lower groove 40g extends in the Y direction. In this embodiment, the intermediate plate lower groove 40g is formed over the entire length of the rolling intermediate plate 40 in the Y direction. A plurality of intermediate plate lower grooves 40g are formed at intervals in the X direction. In this embodiment, four intermediate plate lower grooves 40g are formed.

A hard plate 46 is provided in each middle plate lower groove 40 g of the rolling middle plate 40 . The hard plate 46 has a shape corresponding to the intermediate plate lower groove 40g in plan view. The hard plate 46 is provided over the entire length of the intermediate plate lower groove 40g in the Y direction. The hard plate 46 is formed in a strip shape and fixed in the middle plate lower groove 40g. The hard plate 46 is arranged with the plate thickness direction directed in the vertical direction.

As shown in FIG. 4B, the lower portion of the lower flat roller 3 is arranged in the lower plate groove 20g of the rolling lower plate 20. As shown in FIG. The upper portion of the lower flat roller 3 is arranged in the intermediate plate lower groove 40 g of the rolling intermediate plate 40 . The lower portion of the outer peripheral surface of the roller portion 36 (see FIG. 7; hereinafter the same) of the lower flat roller 3 is provided in the lower plate groove 20g of the rolling lower plate 20. the same.). The upper portion of the outer peripheral surface of the roller portion 36 of the lower flat roller 3 can come into contact with the lower surface 46d of the hard plate 46 provided in the intermediate plate lower groove 40g of the rolling intermediate plate 40 (see FIG. 2; the same shall apply hereinafter). It is

As shown in FIG. 2, the upper surface 40u of the rolling intermediate plate 40 is formed with an intermediate plate upper groove 40j recessed downward. The intermediate plate upper groove 40j extends in the X direction. In this embodiment, the intermediate plate upper groove 40j is formed over the entire length of the rolling intermediate plate 40 in the X direction. A plurality of intermediate plate upper grooves 40j are formed at intervals in the Y direction. In this embodiment, four intermediate plate upper grooves 40j are formed.

The middle plate lower groove 40g and the middle plate upper groove 40j are not formed at substantially the center in the X direction and the substantially center in the Y direction of the rolling middle plate 40, and a bolt hole 40h penetrating in the vertical direction is formed. there is The diameter of the bolt hole 40 h is larger than the diameter of the bolt hole 20 h of the lower rolling plate 20 .

A hard plate 47 is provided in each middle plate upper groove 40j of the rolling middle plate 40 . The hard plate 47 has a shape corresponding to the intermediate plate upper groove 40j in plan view. The hard plate 47 is provided over the entire length of the intermediate plate upper groove 40j in the Y direction. The hard plate 47 is formed in a strip shape and fixed in the intermediate plate upper groove 40j. The hard plate 47 is arranged with the plate thickness direction directed in the vertical direction.

The upper flat roller 5 has multiple flat rollers 30 . Each flat roller 30 is arranged along the upper surface 47 u of the hard plate 47 . The flat rollers 30 are provided at four locations corresponding to the intermediate plate upper grooves 40j.

As shown in FIG. 6A, each flat roller 30 is arranged at the center of the corresponding hard plate 47 in the X direction. In other words, the flat rollers 30 are not provided on both ends of the hard plate 47 in the X direction in order to ensure a movable dimension.

The configuration of the upper flat roller 5 is similar to that of the lower flat roller 3 except that the flat roller 30 is arranged in a different direction. Descriptions of the same configurations of the upper flat roller 5 and the lower flat roller 3 are omitted. In the upper flat roller 5, the width direction of the flat roller 30 is oriented in the Y direction and the longitudinal direction thereof is oriented in the X direction. In the upper flat roller 5, the roller portion 36 is rotatable about the axis with the axial direction directed in the Y direction. A plurality of roller portions 36 are arranged at intervals in the X direction. The cage portion 31 supports both ends of the roller portion 36 in the Y direction. In the upper flat roller 5, the cage portion 31 is the upper roller support portion and the roller portion 36 is the upper roller portion.

As shown in FIG. 4( a ), the upper member 6 has an upper plate 60 and a rolling upper plate 70 fixed to the upper plate 60 . The upper plate 60 is formed in a plate shape. The upper plate 60 is arranged with its plate thickness direction directed in the vertical direction. As shown in FIG. 1, the lower surface of the upper capital 93 is provided with an embedded steel plate 93t. A bolt 60a inserted through the upper plate 60 passes through the embedded steel plate 93t and is screwed to a cap nut 93e provided on the upper capital 93. As shown in FIG.

As shown in FIG. 4B, upper plate recesses 61 that are recessed downward are formed at substantially the center in the X direction and substantially the center in the Y direction of the upper plate 60 .

A bolt hole 60h is formed vertically through the bottom (lower surface) of the upper plate recess 61 . The diameter of the bolt hole 60 h is substantially the same as the diameter of the bolt hole 40 h of the rolling intermediate plate 40 .

As shown in FIG. 5( a ), the rolling upper plate 70 is arranged above the rolling medium plate 40 and along the lower surface 60 d of the upper plate 60 . As shown in FIG. 2, the rolling upper plate 70 is formed in a plate shape. The rolling upper plate 70 is arranged with its plate thickness direction directed in the vertical direction.

A lower surface 70d of the upper rolling plate 70 is formed with an upper plate groove 70g recessed upward. The upper plate groove 70g extends in the X direction. In this embodiment, the upper plate groove 70g is formed over the entire length of the rolling upper plate 70 in the X direction. A plurality of upper plate grooves 70g are formed at intervals in the Y direction. In this embodiment, four upper plate grooves 70g are formed.

No upper plate grooves 70g are formed at substantially the center in the X direction and the substantially center in the Y direction of the rolling upper plate 70, and bolt holes 70h are formed through the rolling upper plate 70 in the vertical direction. The diameter of the bolt hole 70 h is substantially the same as the diameter of the bolt hole of the rolling intermediate plate 40 .

As shown in FIG. 4B, the fixing bolts 71 inserted through the bolt holes 60h of the upper plate 60 pass through the bolt holes 70h of the upper rolling plate 70, the bolt holes 40h of the intermediate rolling plate 40, and the lower rolling plate. 20 and screwed into the bolt holes 10h of the lower plate 10. As shown in FIG. A washer 72 is provided between the head of the fixing bolt 71 and the bottom of the upper plate recess 61 of the lower plate 10 . The diameter of the washer 72 is larger than the diameter of the bolt hole 60 h of the upper plate 60 . The diameter of the bolt hole 60 h of the upper plate 60 , the diameter of the bolt hole 70 h of the upper rolling plate 70 , and the diameter of the bolt hole 40 h of the intermediate rolling plate 40 are sufficiently larger than the diameter of the shaft portion of the fixing bolt 71 . In other words, the bolt hole 60h of the upper plate 60, the bolt hole 70h of the upper rolling plate 70, and the bolt hole 40h of the intermediate rolling plate 40 have a sufficiently large clearance c2 on the outer circumference of the shaft portion of the fixing bolt 71. there is The diameter of the bolt hole 20 h of the lower rolling plate 20 and the diameter of the bolt hole 10 h of the lower plate 10 are substantially the same as or slightly larger than the diameter of the fixing bolt 71 .

The lower rolling plate 20 , the intermediate rolling plate 40 and the upper rolling plate 70 are sandwiched between the lower plate 10 and the upper plate 60 by the fixing bolts 71 .

As shown in FIG. 2, a hard plate 76 is provided in each upper plate groove 70g of the rolling upper plate 70. As shown in FIG. The hard plate 76 has a shape corresponding to the upper plate groove 70g in plan view. The hard plate 76 is provided over the entire length of the upper plate groove 70g in the X direction. The hard plate 76 is formed in a band plate shape and fixed in the upper plate groove 70g. The hard plate 76 is arranged with the plate thickness direction directed in the vertical direction.

As shown in FIG. 5( b ), the lower portion of the upper flat roller 5 is arranged in the middle plate upper groove 40 j of the rolling middle plate 40 . The upper portion of the upper flat roller 5 is arranged in the upper plate groove 70 g of the rolling upper plate 70 . The lower portion of the outer peripheral surface of the roller portion 36 of the upper flat roller 5 can come into contact with the upper surface 47u (see FIG. 2; the same shall apply hereinafter) of the hard plate 47 provided in the intermediate plate upper groove 40j of the rolling intermediate plate 40. It is The upper portion of the outer peripheral surface of the roller portion 36 of the upper flat roller 5 can come into contact with the lower surface 76d (see FIG. 2, the same applies hereinafter) of the hard plate 76 provided in the upper plate groove 70g of the rolling upper plate 70. ing.

As shown in FIG. 4B, the lower angles 81 are provided on both end surfaces of the lower rolling plate 20 and the intermediate rolling plate 40 in the X direction, and the intermediate rolling plate 40 is relative to the lower member 1 in the X direction. Y-direction relative displacement is allowed while restricting displacement. The lower angle 81 has an L shape when viewed in cross section along the X direction and the vertical direction. Each lower angle 81 has a mounting plate portion 82 and a regulating plate portion 83 .

The mounting plate portion 82 is arranged on the upper surface 10 u of the lower plate 10 . A screw 84 is inserted through the mounting hole of the mounting plate portion 82 and screwed into the mounting hole of the lower plate 10 .

The restricting plate portion 83 is provided at the end portion of the mounting plate portion 82 in the X direction. The restricting plate portion 83 is disposed in contact with the X-direction end surfaces of the lower rolling plate 20 and the intermediate rolling plate 40 . As a result, relative displacement in the Y direction is allowed while restricting relative displacement in the X direction among the lower plate 10, the lower rolling plate 20, and the intermediate rolling plate 40. FIG.

As shown in FIG. 5(b), the upper angles 86 are provided on both end surfaces of the upper rolling plate 70 and the intermediate rolling plate 40 in the Y direction, and are arranged relative to the upper member 6 of the intermediate rolling plate 40 in the Y direction. The relative displacement in the X direction is made free while restricting the displacement. The upper angle 86 has an L shape when viewed in cross section along the Y direction and the vertical direction. Each upper angle 86 has a mounting plate portion 87 and a restricting plate portion 88 .

The mounting plate portion 87 is arranged on the lower surface 60 d of the upper plate 60 . A screw 89 is inserted through the mounting hole of the mounting plate portion 82 and screwed into the mounting hole of the upper plate 60 .

The restriction plate portion 88 is provided at the Y-direction end portion of the mounting plate portion 87 . The restricting plate portion 88 is disposed in contact with the Y-direction end surfaces of the upper rolling plate 70 and the intermediate rolling plate 40 . Thereby, the relative displacement in the X direction is allowed while restricting the relative displacement in the Y direction between the upper plate 60, the upper rolling plate 70, and the intermediate rolling plate 40. FIG.

In the anti-vibration floor structure 100 described above, the operation of the roller support 101 when the floating floor 92 dries and shrinks will be described.
First, the case where the floating floor 92 dries and shrinks and the floating floor 92 and the upper capital 93 supporting the floating floor 92 are displaced to one side in the X direction will be described.
As the upper capital 93 is displaced to one side in the X direction, the upper plate 60 fixed to the upper capital 93 with bolts and the rolling upper plate 70 provided along the lower surface 60d of the upper plate 60 are displaced to one side in the X direction. A force to the side acts, and the roller portion 36 of the upper flat roller 5 rotates. The rotation direction is such that the upper portion of the outer peripheral surface faces from the other side to the one side in the X direction when viewed from above. As the roller portion 36 rotates, the rolling upper plate 70 slides on the outer peripheral surface of the roller portion 36 . As a result, the upper plate 60 and the rolling upper plate 70 are displaced to one side in the X direction.

Next, the case where the floating floor 92 dries and shrinks and the floating floor 92 and the upper capital 93 supporting the floating floor 92 are displaced to one side in the Y direction will be described.
As the upper capital 93 is displaced to one side in the Y direction, the upper plate 60 fixed to the upper capital 93 with bolts, the upper rolling plate 70 provided along the lower surface 60d of the upper plate 60, and the upper rolling plate 70 are formed. A force toward one side in the Y direction acts on the rolling intermediate plate 40 provided along the lower surface 70d of 70, and the roller portion 36 of the lower flat roller 3 rotates. The rotation direction is such that the upper portion of the outer peripheral surface faces from the other side to the one side in the Y direction when viewed from above. As the roller portion 36 rotates, the rolling intermediate plate 40 slides on the outer peripheral surface of the roller portion 36 . As a result, the upper plate 60, the upper rolling plate 70, and the intermediate rolling plate 40 are displaced to one side in the Y direction.

In the anti-vibration floor structure 100 configured in this manner, when the upper capital 93 is about to be displaced in the X direction, the upper flat roller 5 rotates around the axis with the Y direction as the axial direction. As the upper flat roller 5 rotates, the lower surface 70d of the upper rolling plate 70 and the upper surface 40u of the intermediate rolling plate 40 slide (roll) along the outer peripheral surface of the upper flat roller 5, and the upper rolling plate 70 and the rolling medium plate 40 produce relative displacement in the X direction.
Further, when the upper capital 93 is about to be displaced in the Y direction, the lower flat roller 3 rotates around the axis with the X direction as the axial direction. As the lower flat roller 3 rotates, the upper surface 20 u of the lower rolling plate 20 and the lower surface 40 d of the intermediate rolling plate 40 slide (roll) along the outer peripheral surface of the lower flat roller 3 . and the rolling intermediate plate 40 produce relative displacement in the Y direction.
Therefore, the displacement of the upper capital 93 causes the rotation of the upper flat roller 5 and the lower flat roller 3, which causes the sliding between the upper rolling plate 70 and the middle rolling plate 40 in the X direction ( Rolling) displacement and sliding displacement in the Y direction between the lower rolling plate 20 and the middle rolling plate 40 occur smoothly. Therefore, the horizontal force acting on the support spring can be greatly reduced.

In the lower flat roller 3, since a plurality of roller portions 36 are arranged, the upper surface 26u of the hard plate 26 provided on the lower rolling plate 20 and the lower surface 46d of the hard plate 46 provided on the intermediate rolling plate 40 and a large contact surface with the roller portion 36 can be secured. Therefore, even a roller with a small diameter can withstand a large load, and the relative displacement in the Y direction between the lower rolling plate 20 and the intermediate rolling plate 40 is more smoothly and reliably generated.

Moreover, since the lower flat roller 3 is a product in which a plurality of roller portions 36 are arranged, the plurality of roller portions 36 can be easily installed.

Further, the lower portion of the lower flat roller 3 is accommodated in the lower plate groove 20g of the rolling lower plate 20, and the upper portion of the lower flat roller 3 is accommodated in the middle plate lower groove 40g of the rolling intermediate plate 40. Therefore, the lower flat roller 3 does not rotate in directions other than the rotation direction around the axis in the X direction, and the relative displacement between the lower rolling plate 20 and the intermediate rolling plate 40 is displaced in directions other than the Y direction. is suppressed.

In addition, the lower plate groove 20g and the intermediate plate lower plate groove are spaced apart in the X direction, and since one flat roller 30 is accommodated in one groove, the flat rollers 30 do not come into contact with each other.

In the upper flat roller 5, since a plurality of upper roller portions 36 are arranged, the lower surface 76d of the hard plate 76 provided on the rolling upper plate 70 and the upper surface of the hard plate 47 provided on the rolling intermediate plate 40 A large contact surface between 47u and the upper roller portion 36 can be ensured. Therefore, even a roller with a small diameter can withstand a large load, and the relative displacement in the X direction between the upper rolling plate 70 and the middle rolling plate 40 is more smoothly and reliably generated.

Moreover, since the upper flat roller 5 is a product in which a plurality of roller portions 36 are arranged, the plurality of roller portions 36 can be easily installed.

Further, the upper portion of the upper flat roller 5 is accommodated in the upper plate groove 70g of the rolling upper plate 70, and the lower portion of the upper flat roller 5 is accommodated in the intermediate plate upper groove 40j of the rolling intermediate plate 40. As shown in FIG. Therefore, the upper flat roller 5 does not rotate in directions other than the direction of rotation about the axis in the Y direction, and the relative displacement between the upper rolling plate 70 and the intermediate rolling plate 40 is displaced in directions other than the X direction. is suppressed.

Also, the upper plate groove 70g and the intermediate plate upper groove 40j are spaced apart in the Y direction, and one flat roller 30 is accommodated in one groove, so that the flat rollers 30 do not come into contact with each other.

In addition, since the relative movement in the X direction between the lower member 1 and the intermediate rolling plate 40 is restricted by the lower angle 81, when a force that displaces the upper capital 93 in the X direction acts, the movement between the other members will occur. , relative displacement in the X direction is urged between the upper rolling plate 70 and the middle rolling plate 40 .

In addition, since the upper angle 86 restricts the relative movement in the Y direction between the upper member 6 and the intermediate rolling plate 40, when a force that displaces the upper capital 93 in the Y direction acts, the movement between the other members is prevented. Relative displacement in the Y direction is promoted between the lower rolling plate 20 and the intermediate rolling plate 40 without causing any relative displacement in the Y direction.

Moreover, the height of the lower flat roller 3 and the upper flat roller 5 is very thin, about 2 to 7 mm, and the height of the entire roller support 101 can be suppressed to 100 mm or less. Therefore, when the roller bearing 101 is installed above the spring unit 94, it is possible to suppress an increase in the height of the device, so that the height under the floor is less affected.

Also, by setting the specifications in consideration of the rolling distance and support weight of the lower flat roller 3 and the upper flat roller 5, it can be applied as a bearing for equipment seismic isolation, floor seismic isolation, and building seismic isolation.

Also, the upper plate 97 of the spring unit 94 can also function as the lower plate 10 of the roller bearing 101, in which case it is not necessary to provide a separate lower plate.

It should be noted that the various shapes, combinations, etc., of the constituent members shown in the above-described embodiment are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present invention.

For example, in the embodiment shown above, the upper member 6 has an upper plate 60 and a rolling upper plate 70, and the lower member 1 has a lower plate 10 and a rolling lower plate 20. It is not limited to this. Even if the upper plate is directly provided with the upper plate groove and the upper plate also has the function of the rolling upper plate, and the lower plate is directly provided with the lower plate groove and the lower plate also has the function of the rolling lower plate. good.

Further, in the embodiment shown above, the clearance c1 is provided in the insertion hole 97h of the lower plate 10 so that the lower plate 10 can be horizontally displaced with respect to the upper capital 93, but the present invention is limited to this. Instead, the upper member may be displaceable in the first direction and the second direction with respect to the upper body.

In the above-described embodiment, the lower rolling plate 20, the middle rolling plate 40 and the upper rolling plate 70 are provided with hard plates 26, 46, 47 and 76, respectively. Although the outer peripheral surface of the roller portion 36 of the flat roller 30 can be brought into contact with 47 and 76, the present invention is not limited to this. A configuration in which the outer peripheral surface of the lower roller member directly contacts the lower rolling plate and the intermediate rolling plate, or a configuration in which the outer peripheral surface of the upper roller member directly contacts the upper rolling plate and the intermediate rolling plate may be employed.

In the embodiment shown above, the upper plate 97 of the spring unit 94 also functions as the lower plate 10 of the roller bearing 101, but the present invention is not limited to this, and the upper plate is provided separately from the lower plate. good too.

1... Lower member 3... Lower flat roller (lower roller member)
5 ... Upper flat roller (upper roller member)
6 Upper member 10 Lower plate 20 Rolling lower plate 20g Lower plate grooves 26, 46, 47, 76 Hard plate 30 Flat roller 31 Cage portion (lower roller support portion, upper roller support portion)
36 ... Roller part (lower roller part, upper roller part)
40... Rolling middle plate 40g... Middle plate lower groove 40j... Middle plate upper groove 60... Upper plate 70... Rolling upper plate 70g... Upper plate groove 81... Lower angle (first direction restricting portion)
86 ... Upper angle (second direction control part)
91 ... lower capital (lower body)
92... Floating floor 93... Upper capital (upper body)
94 Spring unit 95 Lower plate 97 Upper plate 98 Spring body (support spring)
100... Anti-vibration floor structure 101... Roller bearing (bearing mechanism)

Claims (8)

A support mechanism provided between a spring unit supported by the lower body and the upper body,
a lower member provided along the upper surface of the spring unit;
a lower roller member provided along the upper surface of the lower member and rotatable about the axis with the first direction along the horizontal plane as the axis direction;
a rolling mid-plate along the top of the lower roller member;
an upper roller member provided along the upper surface of the intermediate rolling plate and rotatable about the second direction perpendicular to the first direction along the horizontal plane as the axial direction;
an upper member along the top of the upper roller member;
The lower member is fixed to the upper surface of the spring unit,
The upper member is fixed to the upper body,
The upper surface of the lower member and the lower surface of the intermediate rolling plate are disposed in contact with the outer peripheral surface of the lower roller member,
the lower surface of the upper member and the upper surface of the intermediate rolling plate are disposed in contact with the outer peripheral surface of the upper roller member ;
A bearing mechanism, wherein a hard plate is provided so as to be able to abut against the outer peripheral surface of the roller portion of the lower roller member and the outer peripheral surface of the roller portion of the upper roller member. The lower roller member is
a plurality of lower roller portions oriented in the first direction and spaced apart in the second direction;
2. The support mechanism according to claim 1, further comprising a lower roller supporting portion that supports both ends of the plurality of lower roller portions in the first direction. The lower member is
a lower plate provided along the upper surface of the spring unit and connected to the upper body so as to be displaceable in the first direction and the second direction;
a rolling lower plate provided along the upper surface of the lower plate and having a lower plate groove formed on the upper surface to accommodate the lower portion of the lower roller member;
An intermediate plate lower groove capable of accommodating an upper portion of the lower roller member is formed in the lower surface of the rolling intermediate plate,
At least one of the lower rolling plate and the middle rolling plate slides on the outer peripheral surface of the lower roller portion to be displaced in the second direction as the lower roller portion rotates. 3. A bearing mechanism according to claim 2. The upper roller member is
a plurality of upper roller portions having axial directions directed in the second direction and arranged at intervals in the first direction;
4. The support mechanism according to any one of claims 1 to 3, further comprising an upper roller supporting portion that supports both ends of the plurality of upper roller portions in the second direction. The upper member is
an upper plate fixed to the lower surface of the upper body;
a rolling upper plate provided along the lower surface of the upper plate and having an upper plate groove formed on the lower surface for accommodating the upper portion of the upper roller member;
An intermediate plate upper groove is formed on the upper surface of the rolling intermediate plate to accommodate the lower part of the upper roller member,
At least one of the upper rolling plate and the intermediate rolling plate slides on the outer peripheral surface of the upper roller portion to be displaced in the first direction as the upper roller portion rotates. 5. A bearing mechanism according to claim 4. 6. The bearing according to any one of claims 1 to 5, further comprising a first direction restricting portion that restricts relative displacement in the first direction between the lower member and the intermediate rolling plate. mechanism. 7. The apparatus according to any one of claims 1 to 6, further comprising a second direction restricting portion that restricts relative displacement in the second direction between the upper member and the intermediate rolling plate. bearing mechanism. a lower body installed on the foundation;
an upper body disposed above the lower body and on which a floating floor is installed;
a spring unit supported by the lower body;
a bearing mechanism according to any one of claims 1 to 7 arranged between the spring unit and the upper body;
The spring unit is
a lower plate secured to the lower body;
an upper plate connected to the upper body displaceably in the first direction and the second direction;
a support spring positioned between the lower plate and the upper plate;
The lower member is
a lower plate provided along the upper surface of the spring unit supported by the lower body and connected to the upper body so as to be displaceable in the first direction and the second direction;
a rolling lower plate provided along the upper surface of the lower plate and having a lower plate groove formed on the upper surface to accommodate the lower portion of the lower roller member. structure.

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