JP2015081619A - Vibration isolator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause an isolation object facility to be hardly displaced in a horizontal direction.SOLUTION: Under a state in which a washer 2 is buried in an elastic body 3 and adhered to the elastic body 3 through vulcanization to the elastic body 3, counter-boring holes 4 and 5 are formed from the upper surface of the elastic body 3 into the washer 2, the extremity end of a bolt 9 screwed into a thread hole part 8 provided at a leg part 7 of an isolation object facility 6 is stored in the counter-boring holes 4 and 5 from above an isolator 1 and set on the ground, the leg part 7 is moved in a vertical direction through rotating operation of the bolt 9 and a height of the leg part 7 from a floor part 13 is adjusted. It may also be applicable that the elastic body 3 is provided only at a lower part and a side part of the washer 2 or only at the lower part.

Description

  The present invention relates to a vibration isolator comprising a washer and an elastic body, wherein the washer constitutes a member for receiving a bolt attached to a leg portion of a vibration-proof target facility, and the elastic body absorbs vibration transmitted from the washer. The present invention relates to a vibration isolator that constitutes a member to be operated.

  With reference to FIG. 7, the vibration isolator 101 disclosed in Patent Document 1 will be described. The structure of the vibration isolator 101 is as follows. The vibration isolator 101 has a structure in which an elastic body 103 is disposed below a metal washer 102 and a metal movable body 104 is disposed on the washer 102. The washer 102 and the elastic body 103 are provided with guide recesses 105; 106 penetrating in the vertical direction. A washer hole 107 is provided in the washer 102 so as to be recessed from the upper surface of the washer 102. The movable body 104 is provided with a guide protrusion 108 and a screw hole 109. The screw hole 109 is a hole having an internal thread formed on the inner surface.

  The operation of the vibration isolator 101 will be described. When the elastic body 103 is placed on the floor 110 and the movable body 104 is placed on the washer 102, the guide protrusion 108 is inserted into the guide recess 105; 106 from above. After that, the leg 112 of the vibration isolation target equipment 111 using the vibration isolation device 101 is placed on the movable body 104, and the male thread 114 of the bolt 113 penetrates the leg 112 of the vibration isolation target equipment 111 from the top to the bottom. Then, it is screwed into the screw hole 109 and accommodated in the counterbore 107. The bolt 113 has a head portion 115 at the upper end portion of the male screw portion 114 and a center line 116 extending in the vertical direction.

  Then, a tool such as a wrench is fitted into the head 115 of the bolt 113, and the bolt 113 is rotated in one lateral direction around the center line 116 so that the male threaded portion 114 moves downward as the tool rotates. When operated, the movable body 104 moves upward, and the dimension between the leg portion 112 and the floor portion 110 increases.

  Further, in a state where the dimension between the leg portion 112 and the floor portion 110 is increased, the bolt 113 is moved laterally around the center line 116 so that the male screw portion 114 is moved upward as the tool rotates. When operated to rotate in the other direction, the movable body 104 moves downward, and the dimension between the leg portion 112 and the floor portion 110 becomes small.

  That is, the movable body 104 is moved in the vertical direction by rotating the bolt 113, and the height of the leg 112 from the floor 110 is adjusted. In this way, by adjusting the height of the leg 112 from the floor 110, the level of the vibration-proof target facility 111 is maintained. Then, the elastic body 103 absorbs the vibration input from the vibration isolation target equipment 111 to the vibration isolation device 101. Note that a plurality of vibration isolation devices 101 are used in the vibration isolation target equipment 111 so as to keep the vibration isolation target equipment 111 horizontal.

  However, the vibration isolator 101 has a structure in which the overlapping dimension in the vertical direction between the guide recess 105; 106 and the guide protrusion 108 decreases as the height of the leg 112 from the floor 110 increases. The vibration-proof target equipment 111 is likely to be displaced in the horizontal direction.

  With reference to FIG. 8, the vibration isolator 121 disclosed in Patent Document 2 will be described. The structure of the vibration isolator 121 is as follows. The anti-vibration device 121 has a structure in which an elastic body 123 is disposed under a metal bracket 122 and a metal washer 124 is disposed on the bracket 122. A ring-shaped partition wall portion 125 is provided on the upper surface portion of the metal fitting 122. The washer 124 is provided with a countersink hole 126 that is recessed from the top surface of the washer 124 to the inside.

  The operation of the vibration isolator 121 will be described. The elastic body 123 is placed on the floor portion 127, the washer 124 is placed on the portion surrounded by the partition wall portion 125 of the metal fitting 122, and the leg portion 129 of the vibration isolation target equipment 128 is placed on the washer 124. It is burned. The bolt 130 has a male screw part 131, a head part 132, and a center line 133 extending in the vertical direction. The male screw part 131 is screwed into the screw hole part 134; 135 provided in the leg part 129 from the top of the leg part 129 of the anti-vibration target equipment 128 and accommodated in the counterbore hole part 126.

  Then, a tool such as a wrench is fitted into the head 132 of the bolt 130, and the bolt 130 rotates in one lateral direction around the center line 133 as a rotation center so that the male screw 131 moves downward with the tool. If operated, the leg part 129 moves upward, and the dimension between the leg part 129 and the floor part 127 increases.

  Further, in the state where the dimension between the leg portion 129 and the floor portion 127 is increased, the bolt 130 is moved laterally around the center line 133 so that the male screw portion 131 moves upward as the tool rotates. When operated to rotate in the other direction, the leg portion 129 moves downward, and the dimension between the leg portion 129 and the floor portion 127 becomes smaller.

  That is, by rotating the bolt 130, the leg 129 is moved in the vertical direction, and the height of the leg 129 from the floor 127 is adjusted. In this way, by adjusting the height of the leg portion 129 from the floor portion 127, the vibration-proof target facility 128 is kept horizontal. Then, the elastic body 123 absorbs the vibration input from the vibration isolation target facility 128 to the vibration isolation device 121. A plurality of vibration isolation devices 121 are used in the vibration isolation target equipment 128 so that the vibration isolation target equipment 128 is kept horizontal.

  However, the vibration isolator 121 has a structure in which the metal fitting 122, the elastic body 123, and the washer 124 are separated, and the vibration isolation target equipment 128 is easily displaced in the horizontal direction.

  That is, both of the vibration isolator 101 of Patent Document 1 and the vibration isolator 121 of Patent Document 2 have a drawback that the image stabilization target equipment 111; 138 is easily displaced in the horizontal direction.

Utility Model Registration No. 3120892 JP-A-4-118519

  The present invention has been made in view of the above-described background art, and an object thereof is to make it difficult for a vibration-proof target facility to be displaced in the horizontal direction.

  In the vibration isolator according to the present invention, the washer is embedded in the elastic body and bonded to the elastic body so that the screw hole portion provided in the leg portion of the vibration-proof target facility moves in the vertical direction by rotating operation. The concave portion for accommodating the tip of the screwed bolt is formed from the upper surface of the elastic body to the inside of the washer, or the elastic body is disposed on the lower part and the side part of the washer, A recess for accommodating the tip of the bolt that is screwed so that the washer and the elastic body are bonded to each other and moved in the vertical direction by a rotation operation in the screw hole provided in the leg of the vibration-proof target equipment Is formed from the upper surface of the washer to the inside, or an elastic body is disposed under the washer, and the washer and the elastic body are bonded to each other, and are provided on the legs of the vibration-proof target equipment. Screwed into the screw hole to move up and down by rotating operation Recess for accommodating the belt of the tip, characterized in that it is formed over the inside of the upper surface of the washer.

  Although the present invention has a simple configuration composed of a washer and an elastic body, it can appropriately prevent horizontal displacement and load support of the vibration-proof target equipment, and keep the vibration-proof target equipment horizontal. Even if the height is adjusted as described above, since the overlapping dimension in the vertical direction between the bolt and the counterbore hole portion does not change, there is an effect that stable horizontal displacement can be prevented.

The external view which shows the vibration isolator which concerns on form 1 for implementing invention. FIG. 9 is a sectional view taken along line 99-99 in FIG. Sectional drawing equivalent to 99-99 sectional view taken on the line before the height adjustment by the vibration isolator which concerns on Embodiment 1 for implementing this invention. Sectional drawing corresponded to 99-99 sectional view taken on the line after the height adjustment by the vibration isolator which concerns on form 1 for implementing invention. Sectional drawing corresponded to 99-99 sectional view taken on the line which shows the vibration isolator which concerns on the form 2 for implementing invention. Sectional drawing equivalent to 99-99 sectional view taken on the line which shows the vibration isolator which concerns on the form 3 for implementing invention. Sectional drawing corresponded to the 99-99 sectional view which shows the conventional vibration isolator. Sectional drawing corresponded to the 99-99 sectional view taken on the line which shows another conventional vibration isolator.

  With reference to FIG. 2, the structure of the vibration isolator 1 which concerns on the form 1 for implementing invention is demonstrated. The vibration isolator 1 is a model in which a metal washer 2 is embedded in an elastic body 3 and a countersink hole portion 4; 5 is formed from the upper surface of the elastic body 3 to the inside of the washer 2. The washer 2 is not limited to metal, and may be made of carbon fiber or FRP.

  With reference to FIG. 1, the internal structure of the vibration isolator 1 which concerns on the form 1 for inventing is demonstrated. The washer 2 embedded in the elastic body 3 is shaped to be bonded to the elastic body 3 by vulcanization to the elastic body 3. Thus, since the washer 2 and the elastic body 3 are joined to each other by adhesion to the elastic body 3 by vulcanization, the vibration isolator 1 can support a high load and appropriately exhibit the vibration isolating performance. Further, since the washer 2 is embedded inside, it has a rust prevention effect. The washer 2 and the elastic body 3 may be bonded with an adhesive. However, if the washer 2 and the elastic body 3 are bonded by vulcanization, the connection between the washer 2 and the elastic body 3 is formed together with the vulcanization of the elastic body 3.

  The washer 2 can be applied to a multilayer structure. For example, the washer 2 is configured as a separate member divided into a washer upper part 15 and a washer lower part 16 by a boundary line 14 indicated by an imaginary line, and the washer upper part 15 is formed as a through hole and a washer lower part. A configuration in which the bottom of the counterbore hole portion 5 in the washer upper portion 15 is closed at 16 is conceivable. In this case, the counterbore hole 5 can be formed in the washer upper portion 15 by either cutting or pressing. In the state where the washer upper part 15 and the washer lower part 16 are laminated, they are joined together by welding or an adhesive to form an integral washer 2, and this integral washer 2 is embedded in the elastic body 3 to form the elastic body 3. It can be applied even if it is bonded to the elastic body 3 by vulcanization. The washer upper part 15 and the washer lower part 16 may be made of different materials. For example, the washer 2 may be configured by combining a metal, carbon fiber, or FRP washer upper portion 15 and a metal, carbon fiber, or FRP washer lower portion 16 so as to be made of different materials.

  The counterbore holes 4; 5 are tips of male threaded portions 10 of bolts 9 that are screwed into the screw holes 8 provided in the legs 7 of the vibration-proof target equipment 6 so as to move in the vertical direction by rotating operation. It is a recessed part for accommodating a part. The depth of the counterbore holes 4; 5 in the washer 2 is set so that the vertical overlap dimension of the male screw part 10 of the bolt 9 and the washer 2 is one pitch or more of the screw in the male screw part 10 of the bolt 9. ing. The bolt 9 has a head portion 11 at an upper end portion of the male screw portion 10 and has a center line 12 extending in the vertical direction.

  Either a natural rubber or a synthetic rubber can be applied as the material of the elastic body 3. The hardness of the elastic body 3 is selected based on the weight of the vibration-proof target facility 6 and the magnitude of vibration. The bottom part below the washer 2 of the elastic body 3 is a part responsible for vibration isolation and prevention of displacement. The vibration isolation is a function of absorbing vibration transmitted from the vibration isolation target facility 6 to the vibration isolation device 1. The slip prevention is a function for preventing the vibration-proof target equipment 6 from sliding sideways due to vibration. The upper part above the washer 2 of the elastic body 3 is a part that bears protection of the metal by rust prevention and oil resistance.

  The elastic body 3 can also be applied to a multilayer structure. For example, the elastic body 3 is configured as a separate member divided into an elastic body upper part 18 and an elastic body lower part 19 by a boundary line 17 indicated by a virtual line, and the elastic body upper part 18 protects the metal by rust prevention and oil resistance. It is also conceivable that the elastic body lower portion 19 is made of a material suitable for carrying vibration prevention and deviation prevention. In this case, the elastic body upper part 18 and the elastic body lower part 19 can be applied to the washer 2 by vulcanization to the elastic body 3 in a state where the washer 2 is embedded and laminated.

  With reference to FIG.3 and FIG.4, the effect | action of the vibration isolator 1 which concerns on the form 1 for inventing is demonstrated. First, as shown in FIG. 3, the vibration isolator 1 is placed on the floor 13, the openings of the counterbore holes 4; 5 in the elastic body 3 are directed upward, and the vibration isolator 6 The leg portion 7 is placed on the vibration isolator 1, and the screw hole portion 8 of the leg portion 7 faces the counterbore hole portion 4; 5 of the vibration isolator 1 in the vertical direction.

  Then, the male screw portion 10 of the bolt 9 is screwed into the screw hole portion 8 from above the leg portion 7, and the tip end portion of the male screw portion 10 is accommodated in the counterbore hole portions 4;

  Next, as shown in FIG. 4, a tool (not shown) such as a wrench is fitted into the head 11 of the bolt 9, and the center line 12 is moved so that the male threaded portion 10 of the bolt 9 moves downward with the tool. If the bolt 9 is operated so as to rotate in one lateral direction with the rotation center as the rotation center, the leg portion 7 moves upward to leave the vibration isolator 1 and the dimension H between the leg portion 7 and the floor portion 13 is growing.

  Further, in the state where the dimension H between the leg portion 7 and the floor portion 13 is increased, the bolt 9 with the center line 12 as the center of rotation so that the male screw portion 10 of the bolt 9 moves upward with rotation with a tool. Is operated to rotate in the other direction of the horizontal direction, the leg portion 7 moves downward and approaches the vibration isolator 1, and the dimension H between the leg portion 7 and the floor portion 13 decreases.

  That is, by rotating the bolt 9, the leg portion 7 is moved in the vertical direction, and the height of the leg portion 7 from the floor portion 13 is adjusted. In this way, by adjusting the height of the vibration-proof target facility 6 from the floor 13, the level of the vibration-proof target facility 6 is maintained. And the elastic body 3 absorbs the vibration input into the vibration isolator 1 from the vibration isolation object equipment 6.

  A plurality of anti-vibration devices 1 are used for the anti-vibration target facility 6 so as to keep the anti-vibration target facility 6 horizontal.

  3, the nut 20 is attached to the male screw portion 10 so that the nut 20 is positioned between the head portion 11 and the leg portion 7 of the bolt 9, and as shown in FIG. 6, after the adjustment of the height from the floor portion 13 is completed, the bolts 9 are installed in the vibration-proof target equipment by screwing the nuts 20 into contact with the leg portions 7 as indicated by phantom lines in FIG. 4. It is also possible to prevent the rotation from inadvertently rotating due to vibration from 6.

  With reference to FIG. 5, the internal structure of the vibration isolator 1 which concerns on the form 2 for implementing invention is demonstrated. In the vibration isolator 1, the elastic body 3 is arranged at the lower part and the side part of the washer 2, the washer 2 and the elastic body 3 are bonded to each other by vulcanization to the elastic body 3, and the countersink hole 5 is formed on the washer 2. A model formed from the top to the inside. The counterbore 5 is for receiving the tip of the bolt 9 screwed into the screw hole 8 provided in the leg 7 of the vibration-proof target equipment 6 so as to move in the vertical direction by a rotation operation. It is a recess. In addition, when the side part of the washer 2 needs oil resistance and weather resistance, it is also applicable to coat the side part of the washer 2 with paint or a cover.

  With reference to FIG. 6, the internal structure of the vibration isolator 1 according to Embodiment 3 for carrying out the invention will be described. In the vibration isolator 1, an elastic body 3 is disposed under the washer 2, and the washer 2 and the elastic body 3 are bonded to each other by vulcanization to the elastic body 3. It is a model formed over the entire area. The counterbore 5 is for receiving the tip of the bolt 9 screwed into the screw hole 8 provided in the leg 7 of the vibration-proof target equipment 6 so as to move in the vertical direction by a rotation operation. It is a recess. In addition, when the side part and upper surface part of the washer 2 require oil resistance and weather resistance, it is also applicable that the side part and upper surface part of the washer 2 are coated or covered with a cover.

  5 and 6, the washer 2 is constituted by the washer upper part 15 and the washer lower part 16 described in FIG. 1, and the elastic body 3 is constituted by the elastic body upper part 18 and the elastic body lower part 19 explained in FIG. It is also applicable. Further, as described in paragraph 0020, the washer 2 can be applied to any one of metal, carbon fiber, and FRP. Further, as described in paragraph 0021, the washer 2 and the elastic body 3 may be bonded with an adhesive in addition to bonding by vulcanization. When the washer 2 is composed of the washer upper portion 15 and the washer lower portion 16 described with reference to FIG. 1, it can be applied even if the washer upper portion 15 and the washer lower portion 16 are made of different materials as described in paragraph 0022. .

  1, 5, and 6, instead of providing a screw hole 8 in the leg 7, a through hole is provided, and a nut continuous with the through hole is used as a screw hole 8, which is either the upper part or the lower part of the leg 7. Even if it is provided in one or both, it is applicable.

1 is an anti-vibration device, 2 is a washer, 3 is an elastic body, 4; 5 is a counterbore hole portion, 6 is an anti-vibration target device, 7 is a leg portion 7, 8 is a screw hole portion, 9 is a bolt 9 and 10 is Male thread part, 11 is head, 12 is center line, 13 is floor part, 14 is boundary line, 15 is upper part of washer, 16 is lower part of washer, 17 is boundary line, 18 is upper part of elastic body, 19 is lower part of elastic body, 20 is a nut, 21 to 98 are missing numbers, 99 is a line indicating the position of the cross section, 100 is a missing number, 101 is a vibration isolator, 102 is a washer, 103 is an elastic body, 104 is a movable body, 105; 106 is a guide recess, 107 is a counterbore hole portion, 108 is a guide convex portion, 109 is a screw hole portion, 110 is a floor portion, 111 is an anti-vibration target equipment, 112 is a leg portion, 113 is a bolt, 114 is a male screw portion, 115 is a head portion, 116 is a center line, 117 to 120 are missing numbers, 121 is a vibration isolator, 122 is a metal fitting, and 123 is a bullet. Body, 124 is washer, 125 is a partition wall portion, 126 is a counterbore hole portion, 127 is a floor portion, 128 is equipment for vibration isolation, 129 is a leg portion, 130 is a bolt, 131 is a male screw portion, 132 is a head portion, 133 Is a center line, 134; 135 is a screw hole.

Claims (3)

  The tip of a bolt that has a washer embedded inside the elastic body and bonded to the elastic body, and is screwed into the screw hole provided in the leg of the anti-vibration target equipment so as to move up and down by rotation An anti-vibration device characterized in that a countersink hole portion for housing the elastic member is formed from the upper surface of the elastic body to the inside of the washer.   An elastic body is arranged on the lower and side portions of the washer, the washer and the elastic body are bonded to each other, and twisted so that the screw hole provided in the leg portion of the vibration-proof target equipment moves up and down by rotating operation. A vibration isolator having a countersink hole portion for accommodating a tip portion of a bolt inserted therein, extending from the upper surface of the washer to the inside.   An elastic body is placed under the washer, the washer and the elastic body are bonded to each other, and screwed into the screw hole provided in the leg portion of the anti-vibration target equipment so as to move up and down by rotating operation. A vibration isolator having a countersink hole for receiving the tip of a bolt formed from the upper surface of the washer to the inside.

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