WO2018038174A1 - 支持部材 - Google Patents
支持部材 Download PDFInfo
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- WO2018038174A1 WO2018038174A1 PCT/JP2017/030181 JP2017030181W WO2018038174A1 WO 2018038174 A1 WO2018038174 A1 WO 2018038174A1 JP 2017030181 W JP2017030181 W JP 2017030181W WO 2018038174 A1 WO2018038174 A1 WO 2018038174A1
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- WIPO (PCT)
- Prior art keywords
- support member
- damping member
- vibration
- space
- wall portion
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
Definitions
- One embodiment of the present invention relates to a support member that supports an article.
- Patent Document 1 As a support member for supporting an article, one described in Patent Document 1 is known.
- the support member supports the article in a state where the base end is a fixed end and the front end is a free end and extends in the longitudinal direction.
- the support member is configured to include a reinforcing fiber composite fiber material, and a space is formed therein.
- an object of the present invention is to provide a support member that can suppress vibration.
- a support member is a support member that supports an article in a state in which a base end is a fixed end and a front end is a free end and extends in a longitudinal direction, and includes a reinforcing fiber composite resin material.
- a tube wall portion that is configured and has a space formed therein is provided, and a damping member that is movable at least partially in the space is disposed in the space.
- a damping member is disposed in the space of the tube wall. At least a part of the vibration damping member is movable in the space. Therefore, the vibration of the support member can be attenuated by moving the damping member in the space when the support member vibrates and repeating the collision with the tube wall portion with the movement. As described above, vibration of the support member can be suppressed.
- the vibration damping member may be made of an easily deformable material that is more easily deformed than the reinforcing fiber composite resin material. With such a configuration, the shock absorption of the vibration damping member is improved.
- the vibration damping member may extend in the longitudinal direction in the space. With such a configuration, since the vibration damping member can collide over a certain range in the longitudinal direction, the shock absorbing property of the vibration damping member is improved.
- the vibration damping member may be fixed to the tube wall. With such a configuration, it is possible to prevent the position of the damping member in the longitudinal direction from being changed in the space of the tube wall portion.
- the vibration damping member may be non-fixed to the tube wall portion. With such a configuration, it is only necessary to dispose the vibration damping member in the space of the tube wall portion during manufacture, so that manufacture is facilitated.
- the damping member may be arranged at a position on the tip side in the space. Since the vibration of the support member has a larger amplitude on the tip side, the vibration can be efficiently damped by arranging the damping member on the tip side.
- the vibration damping member may be fixed to the tube wall at a position on the distal end side. If the damping member is fixed at the position on the distal end side, the position of the entire damping member can be prevented from being shifted from the distal end side having good shock absorption.
- the bulk density of the damping member may be 0.02 g / cm 3 or more. With such a configuration, the shock absorbing performance of the damping member can be improved.
- vibration of the support member can be suppressed.
- FIG. 1 is a perspective view of a substrate storage cassette to which a support member according to an embodiment of the present invention is applied.
- FIG. 2 is a plan view of the support member of FIG. 3 is a cross-sectional view of the support member taken along line III-III in FIG.
- FIG. 4 is a sectional view conceptually showing the vibration damping member.
- FIG. 5A and FIG. 5B are cross-sectional views showing examples of the arrangement of the damping members.
- FIG. 6A and FIG. 6B are cross-sectional views showing examples of the arrangement of the damping members.
- FIG. 7 is a table showing manufacturing conditions of the support member according to the example.
- FIG. 8 is a table showing specifications of the prepreg used in the support member according to the example.
- FIG. 9A is a table showing the measurement results of the weight of the support member
- FIG. 9B is a table showing the specifications of the damping member
- FIG. 10 is a table showing the specifications of the damping member.
- FIG. 11A is a graph showing an example of the measurement result of the vibration damping performance of the comparative example
- FIG. 11B is a graph showing an example of the measurement result of the vibration damping performance of the example.
- FIG. 12 is a table showing the conditions and measurement results of the examples.
- FIG. 13 is a table showing the conditions and measurement results of the examples.
- FIG. 14 is a table showing the conditions and measurement results of the examples.
- FIG. 15A is a table showing the conditions and measurement results of the examples
- FIG. 15B is a table showing the conditions of the examples.
- FIG. 16 is a table showing the conditions and measurement results of the examples.
- FIG. 17 is a table showing the specifications of the polyrope.
- FIG. 18 is a graph showing the relationship between the length of the poly rope and the vibration suppression specification.
- FIG. 19 is a table showing the specifications of the vibration damping member according to the example.
- FIG. 20 is a table showing the conditions and measurement results of the examples.
- the support member 10 is a member for supporting the article.
- the support member 10 is used as a support bar for a substrate storage cassette.
- the support member 10 can be used for any application, and can be applied to, for example, a robot hand, a robot arm, an automatic warehouse lifter, an article transporting fork, a forklift claw, and the like.
- the substrate storage cassette 1 includes a rectangular parallelepiped box-shaped housing 2 for storing the substrate S. On one side wall of the housing 2, an opening 2 a for carrying the substrate S into and out of the housing 2 is formed. A plurality of (for example, 20 to 30) storage units 3 are provided in the housing 2.
- the substrate storage cassette 1 is used, for example, in a manufacturing process of a liquid crystal display (LCD), and a glass substrate as a substrate S is temporarily stored in each storage unit 3 by a robot hand.
- LCD liquid crystal display
- Each storage unit 3 is provided with a support member 10 that functions as a plurality (for example, three) of support bars, a plurality of (for example, three) side bars 4 and a plurality of (for example, three) side bars 5. ing. As a result, in each storage unit 3, one substrate S is horizontally supported by the plurality of support members 10, the plurality of side bars 4, and the plurality of side bars 5.
- the support member 10 is fixed in a cantilevered manner to the back surface of the housing 2 facing the opening 2a, and extends in the horizontal direction. That is, the support member 10 supports the substrate S in a state where the base end 10a is a fixed end and the front end 10b is a free end and extends in the horizontal direction. The tip 10b of the support member 10 reaches the vicinity of the opening 2a.
- the side bar 4 is fixed in a cantilever manner to one side surface of the casing 2 perpendicular to the back surface facing the opening 2a, and extends in the horizontal direction. That is, the side bar 4 supports one edge of the substrate S in a state where the base end 4a is a fixed end and the front end 4b is a free end and extends in the horizontal direction.
- the front end 4 b of the side bar 4 reaches the vicinity of one support member 10.
- the side bar 5 is fixed in a cantilever manner to the other side surface of the casing 2 perpendicular to the back surface facing the opening 2a, and extends in the horizontal direction. That is, the side bar 5 supports the other edge of the substrate S in a state of extending in the horizontal direction with the base end 5a as a fixed end and the tip 5b as a free end.
- the front end 5 b of the side bar 5 reaches the vicinity of the other support member 10.
- the configuration of the support member 10 described above will be described in more detail.
- the side bars 4 and 5 can also have the same configuration as that of the support member 10.
- the support member 10 is a tapered hollow pipe that tapers toward the tip 10b. Thereby, even if the board
- a columnar protruding member corresponding to an aluminum member 15 described later is erected on the back surface of the housing 2 facing the opening 2a, and the protruding member supports the protruding member.
- the members 10 are inserted into end portions on the base end 10a side and fixed to each other by bonding or the like.
- the aluminum member 15 includes a base portion that is fixed to the housing 2 with bolts or the like, and a rod-shaped portion that is inserted into the support member 10. More specifically, the support member 10 is configured to include a reinforced fiber composite resin material, and includes a tube wall portion 20 in which a space 21 (see FIG. 2) is formed. The support member 10 has a straight portion 10A that extends straight on the base end 10a side, and a taper portion 10B that tapers toward the tip 10b on the tip 10b side. Further, in the straight portion 10A, the aforementioned aluminum member 15 is inserted into a region having a predetermined dimension from the base end 10a. The aluminum member 15 is a solid or hollow rod-shaped member, and is provided so as to fill the space 21 inside the hollow tube wall portion 20.
- the tube wall portion 20 includes a circular tubular (in other words, cylindrical) inner layer 11 extending from the proximal end 10 a to the distal end 10 b. Further, the upper side and the lower side of the inner layer 11 are covered with an outer layer 14 having a circular arc cross section extending from the base end 10a to the tip end 10b. Note that the length of the arc-shaped outer layer 14 in the circumferential direction of the cross section may be a length corresponding to approximately 1/4 of the circumference, that is, a length corresponding to approximately 90 ° in angle. Further, the outer layer 14 may be omitted.
- the inner layer 11 and the outer layers 13 and 14 include a reinforced fiber composite resin material.
- the reinforced fiber composite resin material include fiber reinforced plastics such as glass fiber reinforced plastics (GFRP) and carbon fiber reinforced plastics (CFRP).
- GFRP glass fiber reinforced plastics
- CFRP carbon fiber reinforced plastics
- the inner layer 11 and the outer layers 13 and 14 are configured by laminating one or a plurality of prepregs.
- the fiber of the carbon fiber reinforced resin may be a PAN-based carbon fiber (tensile elastic modulus: 230 to 600 GPa) or a pitch-based carbon fiber (tensile elastic modulus: 600 to 900 GPa).
- a unidirectional prepreg, a woven prepreg, or the like is used as the prepreg constituting the carbon fiber reinforced resin sheet.
- a unidirectional prepreg is a prepreg in which fibers are oriented in only one direction, and may be used at a site where strength and rigidity are desired.
- the woven prepreg is a plain woven or twilled prepreg, which prevents cracking when a radial load is applied to a circular tubular support member, a hole for attaching a receiving sesame for handling a substrate, etc. It may be used to prevent the occurrence of burrs at machined sites.
- Thermosetting resin such as epoxy resin, phenol resin, cyanate resin, unsaturated polyester resin, polyimide resin, bismaleimide resin may be used as the resin impregnated in the carbon fiber reinforced resin sheet, and heat such as polyethylene, polypropylene, etc.
- a plastic resin may be employed.
- the fiber basis weight of the carbon fiber reinforced resin sheet may be set to 25 to 500 g / m 2 .
- the resin content of the carbon fiber reinforced resin sheet may be set to 18 to 50 wt%.
- the thickness of the carbon fiber reinforced resin sheet may be set to 0.03 to 0.5 mm.
- the prepreg constituting the glass fiber reinforced resin a unidirectional prepreg, a woven prepreg, or the like is used.
- Thermosetting resins such as epoxy resin, phenol resin, cyanate resin, unsaturated polyester resin, polyimide resin, bismaleimide resin, etc. may be used as the resin impregnated into the glass fiber reinforced resin, and thermoplastics such as polyethylene and polypropylene. Resin may be employed.
- the fiber basis weight of the glass fiber reinforced resin may be set to 25 to 500 g / m 2 .
- the resin content of the glass fiber reinforced resin may be set to 18 to 50 wt%.
- the thickness of the glass fiber reinforced resin may be set to 0.03 to 0.5 mm, and may be set to 0.1 mm or more.
- a vibration damping member 30 that is movable at least partially in the space 21 is disposed in the space 21.
- the damping member 30 is a member for attenuating the vibration of the support member 10 by repeatedly colliding with the tube wall portion 20 by moving in the space 21 with the vibration of the support member 10.
- the vibration damping member 30 collides with the lower end side of the tube wall portion 20 as shown by the solid line and vibrates with the phantom line as the support member 10 vibrates. Collides with the upper end. Further, the vibration damping member 30 may collide with the lateral end of the tube wall portion 20.
- the vibration damping member 30 may be made of an easily deformable material that is more easily deformed than a reinforcing fiber composite material.
- the easily deformable material is not a material having high rigidity such as a metal or the like, but a material having low rigidity to the extent that it is deformed by being pressed with a predetermined force.
- examples of the easily deformable material include a resin material, an elastic material, and a foam material.
- the resin material include vinyl, polyester, polystyrene, and urethane.
- the elastic material include rubber and silicon rubber.
- Examples of the foam material include polystyrene and urethane.
- the vibration damping member 30 may extend in the longitudinal direction of the tube wall portion 20 in the space 21.
- the damping member 30 may have a long shape such as a string shape or a rod shape.
- the cross-sectional shape of the damping member 30 may be any shape such as a circle, a square, a star, and an irregular shape, and may be solid, hollow, or any shape.
- the damping member 30 may be a single string body, may be composed of a plurality of string bodies, or may be a knitted fiber.
- the vibration damping member 30 may be arranged in the space 21 in a state in which a long shape is extended along the longitudinal direction of the tube wall portion 20.
- the string-like damping member 30 may be folded and arranged in the space 21.
- the vibration damping member 30 may not have a configuration extending in the longitudinal direction.
- the damping member 30 has a shape of a bar, a plate, or a pipe attached to the tip, and the cross-sectional shape is a square, rectangle, circle, ellipse, hollow, or solid shape. Good.
- the vibration damping member 30 may be fixed to the tube wall portion 20.
- the vibration damping member 30 may be fixed to the tube wall portion 20 via a fixing member 31.
- the fixing member 31 is fixed to the inner surface of the tube wall portion 20, and the vibration damping member 30 is fixed to the fixing member 31.
- the fixing member 31 may be fixed by a frictional force with the tube wall portion 20 by being configured to have a dimension equal to or larger than the inner diameter of the tube wall portion 20.
- the fixing member 31 may be fixed to the tube wall portion 20 using an adhesive or the like.
- the material of the fixing member 31 is not particularly limited, and may be made of foamed polystyrene (polystyrene), foamed polyethylene, urethane foam, or the like.
- the method of fixing the vibration damping member 30 is not particularly limited, and an engagement portion that engages the vibration damping member 30 is provided in the space 21 of the tube wall portion 20, and the vibration damping member 30 is attached to the engagement portion. You may fix by engaging. Further, the vibration damping member 30 may be fixed to the tube wall portion 20 with an adhesive or the like. When the damping member 30 is fixed to the pipe wall portion 20, at least a part of the damping member 30 moves relative to the pipe wall portion 20, rather than fixing the entire damping member 30 to the pipe wall portion 20. A part of the damping member 30 is fixed to the tube wall portion 20 so as to be possible.
- the vibration damping member 30 may be unfixed with respect to the tube wall portion 20. That is, the vibration damping member 30 may simply be placed on the inner surface of the tube wall portion 20. For example, as shown in FIG. 6 (b), when the damping member 30 has a string-like shape, the damping member 30 extends in the longitudinal direction in the tube wall portion 20 Just place it on
- the damping member 30 may be disposed in the space 21 at a position on the tip 10b side. That is, as shown in FIGS. 4, 5 (a), 5 (b), and 6 (b), the vibration damping member 30 may be disposed in a region near the tip 10 b in the space 21.
- the position in the space 21 of the damping member 30 is not specifically limited,
- the damping member 30 may be arrange
- the damping member 30 may be disposed in the space 21 near the center position in the longitudinal direction of the support member 10.
- the vibration damping member 30 may be fixed to the tube wall portion 20 at a position on the tip 10b side. That is, since the damping member 30 has a long shape along the longitudinal direction, the fixing member 31 may be disposed at any position along the longitudinal direction. In the present embodiment, as shown in FIG. 4, the fixing member 31 is disposed at a position corresponding to the end portion on the most distal end 10 b side in the damping member 30. With such a configuration, a portion of the damping member 30 near the end on the tip 10 b side can move in the space 21 with the vibration of the support member 10. However, the portion at which the damping member 30 is fixed is not particularly limited, and the damping member 30 may be fixed at any position in the damping member 30. For example, the support member 10 may be fixed at the end on the base end 10 a side, or may be fixed near the center position of the vibration damping member 30.
- the length of the vibration damping member 30 (the length of a part that can be freely moved excluding the fixed part) is the vibration damping member 30. May be 50 mm or more, or 100 mm or more. Moreover, when the damping member 30 is arrange
- the length of the damping member 30 may be 3% or more and 6% or more with respect to the entire length of the support member 10.
- the upper limit value of the length of the damping member 30 is not particularly limited, but may be inserted into the entire space of the support member 10.
- the diameter of the cross section of the damping member 30 (the average diameter in the case of a shape other than a circle) may be 1.5 mm or more, and may be 2 mm or more.
- the diameter or vertical height of the damping member 30 may be 8.0% or more and 94% or less with respect to the inner dimension of the support member 10. By setting such a diameter, the damping member 30 can sufficiently suppress vibration.
- the upper limit value of the diameter of the damping member 30 may be a dimension equal to or smaller than the inner diameter of the tube wall portion 20 so that the damping member 30 can move at least within the tube wall portion 20.
- the bulk density of the damping member 30 may be at 0.02 g / cm 3 or more, may be at 0.03 g / cm 3 or more.
- the upper limit value of the bulk density of the vibration damping member 30 is not particularly limited, but may be 0.83 g / cm 3 or less.
- a damping member 30 is disposed in the space 21 of the tube wall portion 20. At least a part of the damping member 30 is movable in the space 21. Therefore, when the support member 10 vibrates, the vibration damping member 30 moves in the space 21, and the vibration of the support member 10 can be attenuated by repeating the collision with the tube wall portion 20 along with the movement. As described above, vibration of the support member 10 can be suppressed.
- the vibration damping member 30 is made of an easily deformable material that is more easily deformed than a reinforcing fiber composite material. With such a configuration, the shock absorption of the vibration damping member 30 is improved.
- a metal member is used as the damping member 30, in addition to an increase in weight, the damping characteristic may not be exhibited unexpectedly. That is, when a metal member is disposed at the tip of the support member 10, the metal material generally has high rigidity, and therefore the metal member is unlikely to repeatedly collide with the tube wall inside the support member 10 even by vibration. Therefore, using a metal member as the damping member may not lead to suppression of vibration.
- a metal member as a vibration damping member also attaches a heavy object to the tip of the support member 10, which leads to a decrease in the natural frequency of the support member 10, and the expected vibration convergence behavior. It may not connect.
- adopted what was comprised with the easily deformable material as the damping member 30 can perform a shock absorption suitably compared with the structure which used the metallic member as the damping member.
- a vibration control structure of the support member a configuration in which a weight body is arranged at the tip of the support member via an elastic body is conceivable.
- this configuration it is necessary to adjust the relationship between the natural frequency of the weight part and the natural frequency of the support member itself (pipe itself). That is, it is necessary to adjust the length of the elastic body, the elastic modulus, and the mass of the weight body so that the weight body swings in the direction opposite to the direction in which the support member swings.
- the natural frequency changes between when the substrate is loaded and when it is not loaded.
- the vibration damping member 30 extends in the longitudinal direction within the space 21. With such a configuration, the vibration damping member 30 can collide over a certain range in the longitudinal direction, so that the shock absorption of the vibration damping member 30 is improved.
- the vibration damping member 30 is fixed to the tube wall portion 20. With such a configuration, it is possible to prevent the position of the vibration damping member 30 in the longitudinal direction from being changed in the space 21 of the tube wall portion 20.
- the damping member 30 is not fixed to the tube wall portion 20. With such a configuration, it is only necessary to arrange the vibration damping member 30 in the space 21 of the pipe wall portion 20 at the time of manufacture, and thus the manufacture is facilitated.
- the damping member 30 is disposed in the space 21 at a position on the tip 10b side. Since the vibration of the support member 10 has a larger amplitude on the tip 10b side, the vibration can be efficiently damped by disposing the damping member 30 on the tip 10b side.
- the vibration damping member 30 is fixed to the tube wall portion 20 at a position on the distal end 10b side. If the damping member 30 is fixed at the position on the tip 10b side, the position of the damping member 30 as a whole can be prevented from shifting from the tip side having good shock absorption. For example, as shown in FIG. 5B, when the damping member 30 is disposed on the distal end 10b side and is fixed on the proximal end 10a side, as time passes, There is a possibility that the portion arranged on the distal end 10b side gradually approaches the fixing member 31 side on the proximal end 10a side. In this case, the vibration suppression effect of the damping member 30 in the vicinity of the tip 10b may be reduced. On the other hand, if the damping member 30 is fixed on the tip 10b side as shown in FIG. 5A, at least the damping member 30 can be prevented from moving away from the vicinity of the tip 10b.
- the bulk density of the damping member 30 is 0.02 g / cm 3 or more. With such a configuration, the shock absorbing performance of the vibration damping member 30 can be improved.
- the present invention is not limited to the above-described embodiment, and any configuration may be adopted as the shape, size, and arrangement of the damping member as long as the attenuation of the supporting member can be reduced. Also good.
- the total length of the support member was 1850 mm (the dimension of “full length of support bar” in FIG. 1), and the straight portion was 310 mm (the dimension of “hand straight length” in FIG. 1).
- the long diameter (vertical diameter) of the straight portion on the base end side was 22 mm, and the long diameter (vertical diameter) of the tip was 15 mm.
- the taper part it inclined so that a diameter might decrease at a fixed ratio from 22 mm to 15 mm toward the front-end
- the insertion length of the aluminum member three types of lengths of 282 mm, 200 mm, and 150 mm (dimensions of “aluminum insertion length” in FIG. 1) were prepared.
- the tube wall portion of the support member was configured by laminating a plurality of CFRP sheets.
- Each layer was numbered No. 1 to No. 5 from the inside to the outside in the radial direction, and the conditions in each layer are shown in FIG.
- the “lamination angle” in the table of FIG. 7 is an angle of the fiber with respect to the axial direction of the support member.
- PPG indicates the model number of the prepreg.
- MPT indicates the thickness of the prepreg after molding.
- PLY number indicates the number of prepreg laminates.
- “Lamination position” indicates the mounting state of the sheet. Whether the sheet is wound over the entire circumference (corresponding to the inner layer 11 in FIG. 3) or only the upper and lower ends are wound (on the outer layer 14 in FIG.
- FIG. 8 shows the details of the specifications of each prepreg.
- “AFW” in FIG. 8 represents the weight per unit area of the reinforcing fiber
- “RC” represents the weight ratio of the matrix resin contained in the prepreg
- “GF” represents the state of the glass fiber.
- the weight when the aluminum insertion length is 150 mm, the weight could be 450 g or less.
- the weight of the aluminum insertion length of 200 mm was 450 g.
- the damping member when the damping member is inserted, it becomes larger than 450 g. Therefore, in each of the following experiments, the aluminum insertion length was set to 150 mm.
- the aluminum insertion length was 150 mm, and a support member was prepared under the above manufacturing conditions.
- the support member on which the damping member is not installed is used as a comparative example, and the example in which the damping member according to various conditions is arranged is used as an example.
- Examples 1 to 26 were prepared as support members having a vibration damping member according to the conditions shown in FIGS.
- Examples 31 to 36 were prepared as support members having a vibration damping member according to the conditions shown in FIG.
- the item of “damping member” indicates the name of the adopted damping member.
- the specifications of each product name are shown in FIG. 9B and FIG.
- the “insertion position” indicates a position where the damping member is arranged in the space inside the support member.
- tip indicates that the tip of the support member and the tip of the damping member are arranged to coincide with each other.
- the base end of the support member and the end portion on the base end side of the damping member are arranged to coincide with each other.
- insertion length indicates the overall length when the damping member is extended in the support member.
- fixed indicates whether or not the vibration damping member is fixed, and the fixing location. In the case of “fixed at the front end”, it indicates that the vibration damping member is fixed in a state where the fixing member is disposed at the position of the base end of the support member.
- the transparent tube B when the transparent tube B was used, a circular recess having a diameter of 7 mm was attached to a cylindrical foamed polystyrene having a diameter of 13 mm, and the transparent tube was inserted therein to be fixed.
- a polyrope When a polyrope was used, a cylindrical foamed polystyrene having a diameter of 13 mm was pushed into the tip of the support member, and at that time, the polyrope was sandwiched together and fixed.
- the item “Cost” indicates the cost related to the vibration damping member.
- total weight the total weight of the supporting members including the damping member is shown.
- Examples 37 to 40 were prepared as support members having vibration damping members according to the conditions shown in FIG.
- “silicon tube C” was adopted as the vibration damping member.
- the specification of “silicon tube C” is shown in FIG.
- the “insertion position” was “back”, that is, the base end of the support member.
- the damping member was fixed to an aluminum member provided on the base end side of the support member.
- Other conditions were the same as in the other examples.
- the vibration damping characteristics were measured using a bending vibration damping characteristic evaluation apparatus.
- the base end of the support member is fixed to be in a cantilever fixed state.
- the displacement of the support member during vibration was measured with a laser displacement meter.
- the measurement sampling interval was set to 1 msec, the number of sampling points was set to 40000 points, and the measurement time was set to 40 sec.
- the amplitude starts from a state where the amplitude of the tip of the support member becomes ⁇ 7.5 mm.
- FIG. 11A shows the state of attenuation of the comparative example
- FIG. 11B shows the state of attenuation of the example.
- the measurement result is shown in the item “vibration suppression specification”.
- a vibration suppression spec of 5 seconds or less was evaluated as “ ⁇ ” because the vibration suppression effect was particularly large.
- the vibration suppression specification was larger than 5 seconds, at least smaller than the comparative example was evaluated as “ ⁇ (attenuation)”. A sample having a total weight greater than 450 g was evaluated as “ ⁇ (weight)”.
- the vibration suppression specification is improved at least as compared with the comparative example by arranging the damping member in the space inside the support member. From this, it is understood that the vibration of the support member can be suppressed by using the damping member.
- Example 1 By evaluating Example 1, Example 2, Example 3, and Example 12, a more suitable vibration damping member was selected. Among these, the vibration suppression specification was 0.25 seconds for the transparent tube A of Example 3, and the vibration suppression specification was 0.68 seconds for the polyrop of Example 12, indicating high damping performance. In addition, in the transparent tube A of Example 3, it exceeded the conditions in terms of the total weight. From such a result, it is understood that the vibration damping member has a certain amount of weight and can exhibit sufficient vibration suppressing performance by setting the diameter so that it can move sufficiently within the support member. Therefore, it is understood that the vibration suppression performance can be further improved by using a transparent tube and a polyrope as the damping member. Moreover, as shown in FIG. 14, it is understood that vibration suppression performance can be improved also when a silicone tube, a low foam polystyrene, a strip-shaped nonwoven fabric, a cotton string, or a felt material is used.
- Example 4 By evaluating Example 4, Example 5, Example 6, and Example 7, a more suitable position of the damping member was examined. In Example 4 and Example 5, and Example 6 and Example 7, conditions differ only by the point whether the damping member is arrange
- FIG. 18 is a graph plotting the relationship between the length of the poly rope and the vibration suppression specification for Examples 21 to 26. In each embodiment, the longer the length of the damping member is, the higher the vibration suppression specification is.
- any item of rigidity, total weight, vibration suppression performance, and cost is provided if the insertion length is 400 mm. It is understood that good evaluation can be obtained.
- Example 27 in which conditions suitable as a vibration damping member for the support bar were set was created as a sample for final evaluation.
- a 600 mm polyrope was adopted as the damping member, a polyethylene material was punched into the polyrope as a fixing member, and the polyrope was inserted into the polyrope, and fixed to the tip of the support member using an adhesive.
- the conditions were the same as the layer configuration shown in FIG. 7 (a) except that the “PLY number” of No 4 was set to 4.
- three samples were prepared as Examples 27-1, 27-2, and 27-3. The measurement results of these deflections, total weight, and vibration suppression specifications are shown in FIG.
- Total weight (support member + damping member) indicates the total weight of the entire support member
- total weight (support member only) indicates the weight obtained by removing the weight of the damping member from the support member.
- Example 27 Mass change and bulk density of damping member
- the vibration damping member of Example 27 has a three-strike string shape, and this was divided into 2/3 as viewed in the axial direction (two out of three striking) was designated as Example 28.
- Example 30 was obtained by using the damping member of Example 27 as a backup material.
- Specific specifications of the poly rope are shown in FIG.
- the measurement result of each Example is shown in FIG. From the measurement results of Examples 27 to 29, it is understood that the greater the mass per length, the higher the vibration suppressing effect.
- the bulk density in the case of one of the three polyropes is 0.83 g / cm 3
- the bulk density of the backup material is 0.02 g / cm 3.
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Abstract
Description
次に、支持部材の実施例について説明を行う。ただし、支持部材は以下の実施例に限定されるものではない。
支持部材の全長を1850mm(図1の「サポートバー全長」の寸法)とし、このうちストレート部を310mm(図1の「手元ストレート長さ」の寸法)とした。また、基端側のストレート部の長径(垂直方向の直径)を22mmとし、先端の長径(垂直方向の直径)を15mmとした。テーパ部については、先端に向かって22mmから15mmに直径が一定の割合で減少するように傾斜させた。アルミ部材の挿入長さについては282mm、200mm、150mm(図1の「アルミ挿入長さ」の寸法)の3タイプの長さを準備した。
上述の製造条件にて、アルミ部材の挿入長さを282mm、200mm、150mmとして支持部材を3つ準備した。これらの支持部材の先端に300gfの負荷を付与し、撓みを測定した。「荷重撓み」が6mm以下という条件を満たすことが、サポートバーとしてより好ましい。図9(a)に示すように、いずれのアルミ挿入長さの支持部材についても、撓みが6mmとなり、「荷重撓み±6mm」という条件を満たした。一方、重量については、450g以下であることがサポートバーとしてはより好ましいが、図9(a)に示すように、アルミ挿入長さ150mmの場合に、重量を450g以下とすることができた。なお、アルミ挿入長さ200mmの重量は450gであったが、制振部材を挿入する場合は、450gより大きくなる。従って、以下の各実験では、アルミ挿入長さを150mmとした。
アルミ挿入長さを150mmとし、上述の製造条件にて支持部材を準備した。このうち、制振部材を設置しない支持部材を比較例として、各種条件に係る制振部材を配置したものを実施例とした。具体的には、図12及び図13に示すような条件に係る制振部材を有する支持部材として、実施例1~26を準備した。また、図14に示すような条件に係る制振部材を有する支持部材として、実施例31~36を準備した。「制振部材」の項目では、採用した制振部材の品名を示している。各品名の仕様は、図9(b)及び図10に示されている。「挿入位置」は、支持部材の内部の空間内における、制振部材を配置する位置を示している。当該項目において「先端」の場合は、支持部材の先端と制振部材の先端が一致するように配置していることを示している。「奥」の場合は、支持部材の基端と制振部材の基端側の端部とが一致するように配置している。「挿入長さ」の項目では、制振部材を支持部材内で延ばしたときの全長の寸法を示している。「固定」の項目では、制振部材の固定の有無と、固定箇所を示している。「先端固定」の場合は、支持部材の基端の位置に固定部材を配置した状態で制振部材を固定していることを示す。固定部材の具体的な構成に関し、透明チューブBを用いた場合は、直径13mmの円柱形発泡スチロールに直径7mmの円形くぼみをつけ、そこに透明チューブを差し込むことで固定した。ポリロープを用いた場合は、直径13mmの円柱形発泡スチロールを支持部材の先端部に押し込み、その際にポリロープごと同時に挟み込むことで固定した。「コスト」の項目では、制振部材に係るコストを示している。「総重量」の項目では、制振部材を含めた支持部材の合計の重量を示している。
曲げ振動減衰特性評価装置を用いて、振動減衰特性を測定した。この装置では、支持部材の基端を固定することで片持ち固定状態とした。レーザ変位計で振動時の支持部材の変位を測定した。測定のサンプリング間隔を1msecとし、サンプリングポイント数を40000ポイントに設定し、測定時間を40secに設定した。当該設定条件にて、支持部材の先端に900gfの負荷(初期撓みは約18mm)を付与し、当該負荷を解除した後、支持部材の先端の振幅が±7.5mmとなった状態から振幅が±1.5mm以下となるまでに要する時間を振動抑制スペックとして測定した。測定結果の一例を図11に示す。図11(a)に比較例の減衰の様子が示され、図11(b)に実施例の減衰の様子が示される。図11(a)に示すように、比較例では撓みの減衰する速度が遅く、図11(b)に示すように、実施例では速やかに撓みが小さくなっている。図12~14では、「振動抑制スペック」の項目に測定結果を示している。また、「評価」の項目では、振動抑制スペックが5秒以下であるものが、振動抑制効果が特に大きいものとして「○」と評価した。また、振動抑制スペックが5秒より大きいが、少なくとも比較例より小さいものを「△(減衰)」と評価した。なお、総重量が450gより大きいものは、「△(重量)」と評価した。図12~14、及び図20から理解されるように、制振部材を支持部材の内部の空間に配置することにより少なくとも比較例よりは振動抑制スペックが向上している。このことより、制振部材を用いることで、支持部材の振動を抑制できることが理解される。
実施例1、実施例2、実施例3、実施例12について評価を行うことにより、より好適な制振部材の選定を行った。このうち、実施例3の透明チューブAでは振動抑制スペックが0.25秒となり、実施例12のポリロープでは振動抑制スペックが0.68秒となり、高い制振性能を示した。なお、実施例3の透明チューブAでは、総重量の点で条件を上回っていた。このような結果から、制振部材は、ある程度の重さがあり、支持部材内で十分に動くことができる直径に設定することで、十分な振動抑制性能を発揮できることが理解される。従って、制振部材として、透明チューブ及びポリロープを採用すると、より振動抑制性能を向上できることが理解される。また、図14に示すように、シリコーンチューブ、低発泡スチロール、帯状不織布、綿紐、フェルト材を用いた場合も振動抑制性能を向上できることが理解される。
実施例4、実施例5、実施例6、実施例7について評価を行うことにより、より好適な制振部材の位置について検討した。実施例4と実施例5、及び実施例6と実施例7では、制振部材が先端側に配置されているか、基端側に配置されているか、という点のみで条件が異なっている。いずれの場合においても、先端側に制振部材を配置した方が、振動抑制スペックが向上している。従って、制振部材を支持部材の先端側に配置することで、より振動抑制性能を向上できることが理解される。
実施例18~20、及び実施例21~26について評価を行うことにより、より好適な制振部材の長さについて検討した。実施例18~20は、透明チューブBを採用し、制振部材の挿入長さのみを変化させている。実施例21~26は、ポリロープを採用し、制振部材の挿入長さのみを変化させている。実施例21~26について、ポリロープの長さと振動抑制スペックの関係性についてプロットしたグラフを図18に示す。各実施例では、制振部材の長さを長くすればするほど、振動抑制スペックが上昇している。特に、透明チューブB及びポリロープのいずれについても、制振部材が支持部材の先端側に挿入されている場合、挿入長さ400mmであれば、剛性、総重量、振動抑制性能、コストのいずれの項目についても良好な評価が得られることが理解される。
上述の評価及び検討から、サポートバーに対する制振部材として好適な条件を設定した実施例27を最終評価用のサンプルとして作成した。実施例27では制振部材として600mmのポリロープを採用し、固定部材としてポリエチレン材に穴をあけてポリロープに差し込み、支持部材の先端に接着剤を用いて固定した。なお、実施例27では、図15(b)に示すように、図7(a)で示す層構成に対し、No4の「PLY数」を4とした点以外は同様の条件とした。実施例27として3つのサンプルを準備して実施例27-1、27-2、27-3とした。これらの撓み、総重量、及び振動抑制スペックの測定結果を図15(a)に示す。「総重量(支持部材+制振部材)」とは、支持部材全体の総重量を示し、「総重量(支持部材のみ)」とは、支持部材から制振部材の重量を除いた重量を示す。図12に示す結果から、いずれの最終サンプルでも、剛性、総重量、振動抑制性能においていずれも良好な評価が得られた。
実施例27の制振部材は3ツ打ちの紐状であり、これを軸方向から見て2/3に分割(3ツ打ちのうちの2本分)したものを実施例28とした。実施例27の制振部材を軸方向から見て1/3に分割したもの(3ツ打ちのうちの1本分)を実施例29とした。また、実施例27の制振部材をバックアップ材にしたものを実施例30とした。ポリロープの具体的な仕様については図17に示す。各実施例の測定結果を図16に示す。実施例27~29の測定結果より、長さ当たりの質量が大きいほど、振動抑制効果が高くなることが理解される。また、ポリロープ3ツ打ちのうちの1本分とした場合のかさ密度は、0.83g/cm3であり、バックアップ材のかさ密度は、0.02g/cm3であるが、実施例29と実施例30の比較より、制振部材が同じ重さであっても、かさ密度が高いポリロープの方が振動抑制効果が高くなることが理解される。
図12の実施例5,7及び図20の実施例37~40に示すように、制振部材を支持部材の基端側に配置した場合も、「評価」が比較例よりも良好な「○」か「△」になっていた。「挿入長さ」が750mm以上である実施例37~39では、「評価」が「○」となった。「挿入長さ」が500mmである実施例40では、減衰性能の点から、「評価」が「△」となった。この点より、制振部材を支持部材の基端側に配置した場合、制振部材の十分な挿入長さを確保することで、振動抑制効果を向上できることが理解される。シリコンチューブCを用いた制振部材を支持部材の基端側に配置した場合、挿入長さを750mm以上とすることで、振動抑制効果を向上できることが理解される。
Claims (8)
- 基端を固定端とし、且つ、先端を自由端として長手方向に延びた状態で物品を支持する支持部材であって、
強化繊維複合樹脂材料を含んで構成され、内部に空間が形成された管壁部を備え、
前記空間内には、当該空間内において少なくとも一部分が移動可能な制振部材が配置されている、支持部材。 - 前記制振部材は、前記強化繊維複合樹脂材料に比して変形し易い易変形材料によって構成される、請求項1に記載の支持部材。
- 前記制振部材は、前記空間内にて前記長手方向に延びる、請求項1又は2に記載の支持部材。
- 前記制振部材は、前記管壁部に固定されている、請求項1~3の何れか一項に記載の支持部材。
- 前記制振部材は、前記管壁部に対して非固定とされている、請求項1~3の何れか一項に記載の支持部材。
- 前記制振部材は、前記空間内において、前記先端側の位置に配置されている、請求項1~5の何れか一項に記載の支持部材。
- 前記制振部材は、前記先端側の位置で前記管壁部に固定されている、請求項3に記載の支持部材。
- 前記制振部材のかさ密度は、0.02g/cm3以上である、請求項1~7の何れか一項に記載の支持部材。
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JP2018535744A JP6592201B2 (ja) | 2016-08-24 | 2017-08-23 | 支持部材 |
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GB2305220A (en) * | 1981-07-02 | 1997-04-02 | Secr Defence | Ships propeller dampers |
JP2001200888A (ja) * | 2000-01-18 | 2001-07-27 | Honda Motor Co Ltd | 制振装置 |
JP2003266359A (ja) * | 2002-03-08 | 2003-09-24 | Tatsumo Kk | 制振機能を持った搬送装置 |
JP2009243537A (ja) * | 2008-03-29 | 2009-10-22 | Tokai Rubber Ind Ltd | フォーク用制振装置 |
JP2011109027A (ja) * | 2009-11-20 | 2011-06-02 | Jx Nippon Oil & Energy Corp | サポートバー及び基板収納カセット |
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JP3771360B2 (ja) * | 1997-10-24 | 2006-04-26 | 新日本石油株式会社 | 繊維強化複合材料製管状体 |
JP4029104B2 (ja) | 2006-01-30 | 2008-01-09 | 新日本石油株式会社 | 楕円状支持部材 |
JP2008111538A (ja) * | 2006-10-31 | 2008-05-15 | Toyota Motor Corp | 制振材料の取付け構造および取付け方法 |
JP2008215405A (ja) * | 2007-02-28 | 2008-09-18 | Tokai Rubber Ind Ltd | 板ばね式制振装置 |
JP6144084B2 (ja) * | 2013-03-27 | 2017-06-07 | Jxtgエネルギー株式会社 | 支持部材 |
FR3014517B1 (fr) * | 2013-12-05 | 2016-01-01 | Seco E P B | Element d'amortissement adaptable a au moins un facteur extrinseque de l'amortisseur |
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2017
- 2017-08-23 WO PCT/JP2017/030181 patent/WO2018038174A1/ja active Application Filing
- 2017-08-23 JP JP2018535744A patent/JP6592201B2/ja active Active
- 2017-08-23 KR KR1020197008329A patent/KR102122695B1/ko active IP Right Grant
- 2017-08-23 CN CN201780052363.1A patent/CN109642635B/zh active Active
- 2017-08-24 TW TW108214538U patent/TWM590592U/zh unknown
- 2017-08-24 TW TW106128741A patent/TW201825560A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US3872950A (en) * | 1972-07-13 | 1975-03-25 | Brown Tractors Ltd | Vibration damper for tractor roll-bar |
GB2305220A (en) * | 1981-07-02 | 1997-04-02 | Secr Defence | Ships propeller dampers |
JP2001200888A (ja) * | 2000-01-18 | 2001-07-27 | Honda Motor Co Ltd | 制振装置 |
JP2003266359A (ja) * | 2002-03-08 | 2003-09-24 | Tatsumo Kk | 制振機能を持った搬送装置 |
JP2009243537A (ja) * | 2008-03-29 | 2009-10-22 | Tokai Rubber Ind Ltd | フォーク用制振装置 |
JP2011109027A (ja) * | 2009-11-20 | 2011-06-02 | Jx Nippon Oil & Energy Corp | サポートバー及び基板収納カセット |
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CN109642635A (zh) | 2019-04-16 |
JPWO2018038174A1 (ja) | 2019-03-14 |
KR20190039805A (ko) | 2019-04-15 |
KR102122695B1 (ko) | 2020-06-12 |
JP6592201B2 (ja) | 2019-10-16 |
TWM590592U (zh) | 2020-02-11 |
CN109642635B (zh) | 2021-01-15 |
TW201825560A (zh) | 2018-07-16 |
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