WO2024085202A1 - 制振部材 - Google Patents

制振部材 Download PDF

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Publication number
WO2024085202A1
WO2024085202A1 PCT/JP2023/037791 JP2023037791W WO2024085202A1 WO 2024085202 A1 WO2024085202 A1 WO 2024085202A1 JP 2023037791 W JP2023037791 W JP 2023037791W WO 2024085202 A1 WO2024085202 A1 WO 2024085202A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration
damping member
installation surface
base portion
fixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/037791
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
良周 永井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Natec Co Inc
Original Assignee
Natec Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Natec Co Inc filed Critical Natec Co Inc
Priority to JP2024551843A priority Critical patent/JP7803595B2/ja
Priority to CN202390000594.9U priority patent/CN223768017U/zh
Publication of WO2024085202A1 publication Critical patent/WO2024085202A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • F16F7/00—Vibration-dampers; Shock-absorbers

Definitions

  • This disclosure relates to a vibration-damping member that suppresses the effects of vibration.
  • the fixing plate described in Patent Document 1 is made of a urethane-based elastomer that deforms when a load is applied, but returns to its original shape when the load is removed, and has adhesive properties.
  • the fixing plate in Patent Document 1 is placed between the desk and the device to prevent the device placed on the desk from moving on the desk.
  • the adhesive mat described in Patent Document 2 is made of synthetic resin having adhesiveness and elasticity, and has multiple protrusions on the entire surface of the front side.
  • the back side of the adhesive mat is smooth and has adhesiveness.
  • a typical objective of the present disclosure is to provide a vibration-damping member that can be securely fixed to the installation surface and can adequately suppress the effects of vibration.
  • the vibration-damping member provided by a typical embodiment of the present disclosure is a vibration-damping member that is fixed to a mounting surface and disposed between the mounting surface and an opposing object to suppress the transmission of vibration between the mounting surface and the opposing object, and includes an elastic portion formed from an elastic thermoplastic elastomer, and a base portion formed from a material having higher rigidity than the elastic portion, and having a fixed surface facing the mounting surface, an opposing surface facing the opposing object, and a side portion connecting the fixed surface and the opposing surface, and the elastic portion is integrally molded by injection molding over the fixed surface side, the side portion side, and the opposing surface side of the base portion, thereby accommodating the base portion therein, and the entire portion including the elastic portion is fixed to the mounting surface by the base portion being fixed to the mounting surface.
  • the vibration-damping member disclosed herein is securely fixed to the installation surface and appropriately suppresses the effects of vibration.
  • the vibration-damping member exemplified in this disclosure is fixed to the installation surface and disposed between the installation surface and an opposing object, thereby suppressing the transmission of vibration between the installation surface and the opposing object.
  • the vibration-damping member includes an elastic portion and a base portion.
  • the elastic portion is formed from an elastic thermoplastic elastomer.
  • the base portion is formed from a material having higher rigidity than the elastic portion, and has a fixed surface facing the installation surface, an opposing surface facing the opposing object, and a side portion connecting the fixed surface and opposing surface.
  • the elastic portion is integrally molded by injection molding across the fixed surface side, side portion side, and opposing surface side of the base portion, thereby accommodating the base portion therein.
  • the base portion is fixed to the installation surface, thereby fixing the entire portion, including the elastic portion, to the installation surface.
  • the elastic portion is integrally molded by injection molding over the fixed surface side, side portion side, and opposing surface side of the base portion, so that the base portion having high rigidity is housed inside the elastic portion. Therefore, regardless of the material from which the elastic portion is formed (for example, even if a material with low adhesive strength is selected as the material for the elastic portion), the elastic portion having elasticity can be assembled to the base portion without using adhesives, adhesive tapes, or the like. Furthermore, by fixing the base portion having high rigidity to the installation surface, the entire vibration-damping member including the elastic portion is fixed to the installation surface.
  • the vibration-damping member is fixed to the installation surface in a stable state via the base portion having high rigidity, even without using the adhesive strength of the elastic portion or the adhesive strength of an adhesive or the like. Therefore, the vibration-damping member of the present disclosure is capable of appropriately suppressing the effects of vibration while being sufficiently fixed to the installation surface.
  • the elastic portion is integrally formed over the fixed surface side, side side, and opposing surface side of the base portion, so long as it can accommodate the base portion inside, it does not need to completely cover the entire outer periphery of the base portion. Therefore, part of the base portion may be exposed from the elastic portion.
  • a styrene-based elastomer may be used as the material for the elastic portion.
  • Styrene-based elastomers not only have very high vibration absorption properties, but also have the properties of being less susceptible to deterioration over time than other materials (e.g., urethane-based elastomers, etc.), functioning easily even at low temperatures, and being highly water-resistant, hygienic, and lightweight. Therefore, by using a styrene-based elastomer as the material for the elastic portion, the effects of vibration are more appropriately suppressed.
  • styrene-based elastomers also have the property of being difficult to adhere to other members.
  • the elastic portion is integrally molded on the outer periphery of the base portion and assembled to the base portion, and the base portion is fixed to the installation surface. Therefore, even if a styrene-based elastomer that is difficult to adhere to other members is used for the elastic portion, the entire vibration-damping member is fixed to the installation surface in a stable state.
  • thermoplastic elastomers other than styrene-based elastomers as the material for the elastic part.
  • an olefin-based elastomer when used as the material for the elastic part, an elastic part is formed that has high vibration absorption properties, is resistant to deterioration over time, and is highly resistant to low temperatures, water, and light weight.
  • a polyester-based elastomer when used as the material for the elastic part, an elastic part is formed that has high vibration absorption properties, is resistant to deterioration over time, and is highly resistant to low temperatures, heat, and oil.
  • the vibration-damping member can suppress the effects of vibration while being sufficiently fixed to the installation surface.
  • the fixing surface of the base portion may be formed with multiple protrusions that protrude toward the installation surface.
  • the multiple protrusions appropriately reduce the possibility that the elastic portion integrally molded on the outer periphery of the base portion will shift relative to the base portion (for example, in a direction parallel to the fixing surface of the base portion). This makes it easier to stabilize both the assembly state of the elastic portion relative to the base portion and the fixing state of the vibration-damping member relative to the installation surface. This makes it easier to further suppress the effects of vibration.
  • the shape of each protrusion can be selected as appropriate.
  • the shape of the protrusion may be cylindrical or prismatic (e.g., square prismatic).
  • At least any of the multiple protrusions formed on the fixing surface of the base portion may be exposed to the installation surface without being covered by the elastic portion, so that the vibration-damping member directly contacts the installation surface when fixed to the installation surface.
  • a base portion with protrusions has higher rigidity than an elastic portion. Therefore, by directly contacting at least any of the protrusions on the base portion with the installation surface, the vibration-damping member can be more easily fixed to the installation surface in a more stable state than when the base portion and the installation surface are not in direct contact. This makes it even easier to suppress the effects of vibration.
  • the protrusions when at least one of the protrusions is in direct contact with the installation surface, the protrusions can serve both to suppress displacement of the elastic portion relative to the base portion and to improve the stability of the fixation of the vibration-damping member to the installation surface.
  • the multiple contact protrusions When multiple protrusions (contact protrusions) are in direct contact with the installation surface, the multiple contact protrusions may be arranged with N-fold rotational symmetry (N is an integer of 2 or more) around an axis that passes perpendicularly through the center of the fixing surface.
  • N is an integer of 2 or more
  • the pressure generated between the multiple contact protrusions and the installation surface tends to become more uniform.
  • the vibration-damping member can be more easily fixed to the installation surface in a more stable state.
  • the multiple protrusions may be formed at least at each of the four corners of the fixing surface of the base portion. In this case, the stability of the vibration-damping member when fixed to the installation surface is further improved.
  • At least two of the multiple protrusions formed on the fixing surface of the base portion may be exposed to the installation surface without being covered by the elastic portion, so that they directly contact the installation surface when the vibration-damping member is fixed to the installation surface.
  • the tips of each of the multiple protrusions (contact protrusions) that directly contact the installation surface may be formed on a flat surface located on the same plane. In this case, the contact area between the multiple contact protrusions and the installation surface is likely to increase. Therefore, the pressure generated between the multiple contact protrusions and the installation surface is reduced compared to when the tips of the contact protrusions are not flat surfaces located on the same plane. This further improves stability when fixing the vibration-damping member to the installation surface, and also reduces the possibility of deformation and damage to the installation surface.
  • the tips of all of the multiple contact protrusions may be flat surfaces located on the same plane. In this case, the stability of the fixing of the vibration-damping member is further improved. However, even if some of the multiple contact protrusions are not formed on the flat surface described above, the stability of the fixing of the vibration-damping member is improved by forming the tips of at least two or more contact protrusions on a flat surface.
  • the flat surface at the tip of each of the multiple protrusions that directly contact the installation surface and the flat surface of the elastic portion on the installation surface side may be located on the same plane.
  • the vibration-damping member when the vibration-damping member is fixed to the installation surface, not only do the tip surfaces (flat surfaces) of the multiple contact protrusions contact the installation surface, but the flat surface of the elastic portion on the installation surface side also contacts the installation surface at the same time.
  • the contact area between the vibration-damping member and the installation surface is further increased. This further improves stability when fixing the vibration-damping member to the installation surface, and reduces the possibility of deformation and damage to the installation surface.
  • the base portion may have a screw hole formed therein that penetrates from the opposing surface side to the fixed surface side.
  • the base portion is firmly fixed to the installation surface by inserting a screw into the screw hole and screwing it into the installation surface.
  • the entire vibration-damping member, including the elastic portion is stably fixed to the installation surface. If the elastic portion is fixed to the installation surface with a screw without using the base portion, the soft elastic portion may deform, and the head of the screw may come into contact with the target object and damage the target object. There is also a possibility that the soft elastic portion may come off the screw.
  • the entire vibration-damping member, including the elastic portion is firmly fixed to the installation surface, and the possibility of the head of the screw coming into contact with the target object is reduced.
  • a screw hole may be formed in at least one of the contact protrusions (i.e., the protrusions that come into direct contact with the installation surface when the vibration-damping member is fixed to the installation surface) of the base portion.
  • the area around the screw hole on the fixing surface side of the base portion, where high pressure is likely to occur when the screw is screwed comes into direct contact with the installation surface without going through the elastic portion. This reduces the possibility that the soft elastic portion will be damaged by the pressure when the screw is screwed, and further improves stability when the vibration-damping member is fixed to the installation surface.
  • the thickness of the base portion in the area where the protrusion is formed is greater than the thickness of the base portion in the area where the protrusion is not formed. Therefore, by making the position of the screw hole, which is subject to a large load when the screw is screwed, a protrusion with a large thickness is formed, which makes it easier to improve the strength of the base portion.
  • the tip surface of the contact protrusion where the screw hole is formed may be formed into a flat surface.
  • the pressure generated when the screw is screwed into the contact protrusion is easily dispersed by the flat surface at the tip. This further improves stability when fixing the vibration-damping member to the installation surface, and also reduces the possibility of deformation or damage to the member and installation surface.
  • a countersink (which may be a deep countersink) may be formed on the opposing surface of the screw hole.
  • a countersink is a step formed at the entrance of a screw hole, with a diameter larger than the diameter of the head of the screw.
  • the depth of the countersink may be designed to be deeper than the thickness of the head of the screw used.
  • the multiple screw holes may be arranged with N-fold rotational symmetry (N is an integer of 2 or more) around an axis that passes vertically through the center of the approximately plate-shaped base portion.
  • N is an integer of 2 or more
  • screw hole exposure parts that expose (open) the screw holes formed in the base part by omitting material on the object side and installation surface side may be formed. In this case, the worker can easily insert the screws into the screw holes. Also, even if the screws are screwed into the screw holes, the elastic part is less likely to be damaged.
  • a screw may be fixed to a part of the base portion. In this case, by rotating the entire base portion to which the screw is fixed, the vibration damping member is appropriately fixed to the installation surface by the screw.
  • the material of the base may contain a material that has magnetic force. In this case, if there is a substance on the installation surface to which a magnet can be attached, the base will be fixed to the installation surface by magnetic force. This allows the worker to more easily fix the vibration-damping member to the installation surface.
  • the specific method for including a magnetic material in the material of the base portion can be selected as appropriate.
  • a plastic magnet that can be processed using a compound in which plastic contains magnetic powder as the raw material may be used as the material of the base portion.
  • the magnetic base portion can be formed by various methods such as injection molding or compression molding.
  • the magnetic base portion may also be formed by adding at least one of a magnet and a magnetic sheet to at least a portion of the base portion.
  • the base portion may be formed from a magnetic metal, etc.
  • the base portion includes a magnetic material in its material
  • the screw holes in the base portion described above may be omitted.
  • the configuration of the base portion is simplified.
  • a technique for including a magnetic material in the base portion's material and a technique for forming screw holes in the base portion may be used in combination.
  • the worker can, for example, screw in the screws while the vibration-damping member is temporarily fixed in an appropriate position on the installation surface by magnetic force. This allows the vibration-damping member to be fixed more appropriately to the installation surface.
  • vibration-damping member without using a material with magnetic force for the base material.
  • various materials with high rigidity for example, various resins such as ABS resin, various metals such as stainless steel, etc.
  • various materials with high rigidity for example, various resins such as ABS resin, various metals such as stainless steel, etc.
  • the base portion may have an insertion hole formed therein, which penetrates from the opposing surface side to the fixed surface side and through which the elastic portion is inserted.
  • the elastic portion may be integrally molded after being filled (flowed into) the insertion hole by injection molding.
  • both the shift of the elastic portion in a direction parallel to the fixed surface of the base portion and the shift of the elastic portion in a direction away from the fixed surface and opposing surface of the base portion are suppressed. Therefore, both the assembly state of the elastic portion to the base portion and the fixed state of the vibration-damping member to the installation surface are more likely to be stable. This makes it even easier to suppress the effects of vibration.
  • both the insertion hole and the protrusion described above are formed in the base portion, not only is the insertion hole and the protrusion precisely able to suppress deviation of the elastic portion in a direction parallel to the fixed surface of the base portion, but the insertion hole also suppresses deviation of the elastic portion in a direction away from the fixed surface of the base portion and the mating surface. Therefore, by forming both the insertion hole and the protrusion in the base portion, the effect of suppressing deviation of the elastic portion relative to the base portion is synergistically enhanced.
  • the base portion may be provided with multiple insertion holes.
  • multiple insertion holes By forming multiple insertion holes in the base portion, it becomes easier to more appropriately suppress the displacement of the elastic portion relative to the base portion compared to when there is only one insertion hole.
  • the multiple insertion holes may be arranged with N-fold rotational symmetry (N is an integer of 2 or more) about an axis that passes perpendicularly through the center of the fixed surface. In this case, it becomes easier to appropriately suppress the displacement of the elastic portion throughout the entire vibration-damping member.
  • the material of the elastic portion may contain a phosphorescent material.
  • the phosphorescent material stores electromagnetic waves as energy and emits light by itself using the stored energy.
  • the vibration-damping member can be used as a landmark to easily determine the location of items. Therefore, for example, in the event of a disaster such as an earthquake, not only will the possibility of objects falling due to vibrations be reduced, but the vibration-damping member will also make it easier to appropriately assist in securing an escape route and avoiding collisions with items.
  • protrusions of uniform height may be formed on the surface of the elastic part facing the opposing object.
  • the pressure on each of the multiple protrusions is appropriately distributed, making it easier to more appropriately suppress the effects of vibration.
  • the shape of the protrusions formed on the elastic part can be selected as appropriate.
  • a protrusion in the shape of a sphere with a portion cut out (such as a hemisphere) may be formed on the elastic part. In this case, the contact state between the elastic part and the opposing object is more likely to be stable.
  • FIG. 2 is a perspective view of the vibration damping member 1 as viewed from the front surface 2 side (the side that comes into contact with an object).
  • FIG. 2 is a perspective view of the vibration damping member 1 as viewed from the rear surface 3 side (the side that contacts the installation surface).
  • 1 is an exploded perspective view of a vibration damping member 1 with an elastic portion 10 and a base portion 30 disassembled, as viewed from a front surface 2 side (the side that comes into contact with an opposing object).
  • FIG. 1 is an exploded perspective view of a vibration damping member 1 with an elastic portion 10 and a base portion 30 disassembled, as viewed from a rear surface 3 side (the side that contacts the installation surface).
  • FIG. 1 is a perspective view of a vibration damping member 1 cut along a cross section passing through the center and perpendicular to a surface 2, as viewed from the surface 2 side (the side that comes into contact with an opposing object).
  • FIG. 11 is a perspective view of a vibration damping member 101 of a first modified example, as viewed from a front surface 2 side (the side that comes into contact with an opposing object).
  • FIG. 11 is a perspective view of a vibration damping member 201 of a second modified example, as viewed from the front side (the side that comes into contact with an opposing object).
  • the vibration-damping member 1 of this embodiment is formed in a substantially rectangular parallelepiped shape (the vibration-damping member 1 illustrated in Fig. 1 is substantially plate-shaped).
  • the vibration-damping member 1 is disposed at an installation position where various counterpart objects are installed.
  • the vibration-damping member 1 is disposed between the installation surface and the counterpart object in a state where it is fixed to the installation surface at the installation position where the counterpart object is installed. As a result, the transmission of vibration between the installation surface and the counterpart object is appropriately suppressed.
  • FIG. 1 is a perspective view of the vibration-damping member 1 as viewed from the front surface 2 side (the side that comes into contact with the object).
  • Figure 2 is a perspective view of the vibration-damping member 1 as viewed from the back surface 3 side (the side that comes into contact with the installation surface).
  • the vibration-damping member 1 comprises an elastic portion 10 and a base portion 30.
  • Figure 3 is an exploded perspective view of the vibration-damping member 1 with the elastic portion 10 and base portion 30 disassembled, as viewed from the front surface 2 side (the side that contacts the opposing object).
  • Figure 4 is an exploded perspective view of the vibration-damping member 1 with the elastic portion 10 and base portion 30 disassembled, as viewed from the back surface 3 side (the side that contacts the installation surface).
  • Figure 5 is an oblique view of the vibration-damping member 1 cut at a cross section passing through the center and perpendicular to the front surface 2, as viewed from the front surface 2 side (the side that contacts the opposing object).
  • the elastic portion 10 is made of an elastic thermoplastic elastomer. When the vibration-damping member 1 is in use, the surface 2 of the elastic portion 10 comes into contact with the opposing object, and the vibration between the installation surface and the opposing object is absorbed by the elastic portion 10.
  • the base portion 30 is formed from a material having higher rigidity than the material of the elastic portion 10. As shown in FIG. 3, the surface of the base portion 30 that faces the opposing object (upper side in FIG. 3) is referred to as the opposing surface 32. As shown in FIG. 4, the surface of the base portion 30 that faces the installation surface (upper side in FIG. 4) is referred to as the fixed surface 33. In addition, the portion of the base portion 30 that connects the opposing surface 32 (see FIG. 3) and the fixed surface 33 (see FIG. 4) is referred to as the side portion 34.
  • the elastic portion 10 is integrally molded by injection molding over the mating surface 32 (see FIG. 3), side portion 34, and fixing surface 33 (see FIG. 4) of the base portion 30.
  • the highly rigid base portion 30 is housed inside the elastic portion 10. Therefore, regardless of the material from which the elastic portion 10 is made (for example, even if a material with low adhesive strength is selected as the material for the elastic portion 10), and even without using adhesives, adhesive tapes, etc., the elastic portion 10 can be properly assembled to the base portion 30.
  • the elastic portion 10 only needs to be able to accommodate the base portion 30 therein, and does not need to completely cover the entire outer peripheral surface of the base portion 30 (the mating surface 32, the side portion 34, and the fixed surface 33).
  • the protrusions 36 (36A, 36B) of the base portion 30 are exposed on the installation surface side (the upper side in FIG. 2). A detailed description of the protrusions 36 will be given later.
  • the base portion 30 when the elastic portion 10 is assembled to the base portion 30 (as shown in Figures 1 and 2), the base portion 30 is fixed to the installation surface, and the entire vibration-damping member 1 including the elastic portion 10 is fixed to the installation surface. Therefore, the vibration-damping member 1 is stably fixed to the installation surface via the highly rigid base portion 30 without using the adhesive force of the material of the elastic portion 10 or the adhesive force of an adhesive or the like. Therefore, the vibration-damping member 1 can appropriately suppress the effects of vibration while being sufficiently fixed to the installation surface.
  • the vibration-damping member 1 of this embodiment is fixed to the installation surface by screwing in the screw 5. Therefore, compared to when the adhesive force of the elastic portion 10 or an adhesive is used, the entire vibration-damping member 1 including the elastic portion 10 is fixed to the installation surface in a strong and stable state.
  • the elastic part 10 will be described in detail.
  • the material of the elastic part 10 in this embodiment is a styrene-based elastomer.
  • the styrene-based elastomer not only has a very high vibration absorption property, but also has a property of being less susceptible to deterioration over time compared to other materials (e.g., urethane-based elastomers, etc.). Therefore, by using a styrene-based elastomer as the material of the elastic part 10, the influence of vibration is further appropriately suppressed.
  • the styrene-based elastomer also has a property of being less likely to adhere to other members.
  • the elastic part 10 is integrally molded on the outer periphery of the base part 30 and assembled to the base part 30, and the base part 30 is fixed to the installation surface. Therefore, even if a styrene-based elastomer that is less likely to adhere to other members is used as the material of the elastic part 10, the entire vibration-damping member 1 is fixed to the installation surface in a stable state. Note that even if an olefin-based elastomer or a polyester-based elastomer is used as the material of the elastic part 10 instead of a styrene-based elastomer, the influence of vibration is appropriately suppressed.
  • the material of the elastic section 10 of this embodiment can also contain a phosphorescent material.
  • the phosphorescent material stores electromagnetic waves as energy and emits light by itself using the stored energy. Therefore, by containing a phosphorescent material in the material of the elastic section 10, even if the location where the vibration-damping member 1 is installed becomes a dark environment due to a power outage or the like, the luminous vibration-damping member 1 can be used as a landmark to easily grasp the placement of items, etc. Therefore, for example, in the event of a disaster such as an earthquake, not only is the possibility of objects falling due to vibration reduced, but the vibration-damping member 1 can also appropriately assist in securing an escape route and avoiding collisions with items, etc.
  • protrusions 11 of uniform height are formed on surface 2 (i.e., the surface that comes into contact with the opposing object) of elastic part 10 on the opposing object side (upper side of the figures). Therefore, when the surface of elastic part 10 is brought into contact with the opposing object, the pressure applied to each of the multiple protrusions is appropriately distributed, making it easier to more appropriately suppress the effects of vibration.
  • protrusions 11 in this embodiment are formed in a shape in which a part of a sphere has been cut off (hemispherical). Therefore, the contact state between elastic part 10 and the opposing object is easier to stabilize.
  • the base portion 30 will be described in detail.
  • a plurality of protrusions 36 (36A, 36B) protruding toward the installation surface are formed on the fixing surface 33 (the surface facing the installation surface) of the base portion 30.
  • the elastic portion 10 is integrally molded by injection molding so as to cover the circumferential direction of each of the plurality of protrusions 36.
  • the possibility that the elastic portion 10 integrally molded on the outer periphery of the base portion 30 will be displaced relative to the base portion 30 (for example, in a direction parallel to the fixing surface 33 of the base portion) is appropriately reduced by the plurality of protrusions 36. Therefore, both the assembled state of the elastic portion 10 to the base portion 30 and the fixed state of the vibration damping member 1 to the installation surface are easily stabilized. Therefore, the influence of vibration is further easily suppressed.
  • At least one of the multiple protrusions 36 (36A, 36B) formed on the fixing surface 33 of the base portion 30 is exposed to the installation surface side (upper side of Figs. 2 and 4) without being covered by the elastic portion 10, and thus comes into direct contact with the installation surface when the vibration-damping member 1 is fixed to the installation surface.
  • the base portion 30 having the protrusions 36 has higher rigidity than the elastic portion 10. Therefore, by bringing at least one of the protrusions 36 of the base portion 30 into direct contact with the installation surface, the vibration-damping member 1 is more easily fixed to the installation surface in a more stable state than when the base portion 30 and the installation surface are not in direct contact. Therefore, the influence of vibration is more easily suppressed.
  • the protrusions 36 can serve both to suppress the displacement of the elastic portion 10 relative to the base portion 30 and to improve the stability of the fixation of the vibration-damping member 1 to the installation surface.
  • the outer shape of the base portion 30 in this embodiment is a substantially rectangular plate.
  • the multiple protrusions 36 in this embodiment include at least four protrusions 36 formed at each of the four corners of the fixing surface 33 of the base portion 30. As a result, stability is further improved when fixing the vibration damping member 1 to the installation surface.
  • the tips (ends on the installation surface side) of the multiple protrusions 36 (36A, 36B) that directly contact the installation surface are formed on a flat surface located on the same plane.
  • the heights of the multiple protrusions 36 that directly contact the installation surface are uniform, and the tip surfaces are formed on a flat surface parallel to the fixing surface 33.
  • the contact area between the multiple protrusions 36 and the installation surface is likely to increase. Therefore, compared to when the tips of the protrusions 36 are not flat surfaces located on the same plane, the pressure generated between the multiple protrusions 36 and the installation surface is reduced.
  • the stability when fixing the vibration-damping member 1 to the installation surface is further improved, and the possibility of deformation and damage to the installation surface is also reduced.
  • the tips of all of the multiple protrusions 36 (36A, 36B) are flat surfaces located on the same plane. As a result, the stability of fixing the vibration-damping member 1 is further improved.
  • the base portion 30 has a screw hole 37 formed therein, which penetrates from the mating surface 32 (see FIG. 3) to the fixed surface 33 (see FIG. 4).
  • a screw 5 is inserted into the screw hole 37.
  • the screw 5 inserted into the screw hole 37 is screwed into the installation surface, and the base portion 30 is firmly fixed to the installation surface.
  • the entire vibration-damping member 1, including the elastic portion 10 is stably fixed to the installation surface. If the elastic portion 10 is fixed to the installation surface by the screw 5 without using the base portion 30, the soft elastic portion 10 may deform, and the head of the screw 5 may come into contact with the target object, damaging the target object. There is also a possibility that the soft elastic portion 10 may come off the screw 5.
  • the base portion 30 to which the elastic portion 10 is assembled is fixed to the installation surface by the screw 5, and the entire vibration-damping member 1, including the elastic portion 10, is firmly fixed to the installation surface, and the possibility that the head of the screw 5 may come into contact with the target object is reduced.
  • the screw hole 37 in this embodiment is formed in at least one of the protrusions 36 that directly contact the installation surface when the vibration-damping member 1 is fixed to the installation surface.
  • the periphery of the screw hole 37 on the fixing surface 33 side of the base part 30, where high pressure is likely to occur when the screw 5 is screwed directly contacts the installation surface without the elastic part 10. Therefore, the possibility that the soft elastic part 10 will be damaged by the pressure when the screw 5 is screwed is reduced, and the stability when the vibration-damping member 1 is fixed to the installation surface is improved.
  • the thickness of the base part 30 in the part where the protrusion 36 is formed is greater than the thickness of the base part 30 in the part where the protrusion 36 is not formed. Therefore, by positioning the screw hole 37, which is subjected to a large load when the screw 5 is screwed, in the thick protrusion 36 (specifically, protrusion 36A), the strength of the base part 30 is also easily improved.
  • the multiple protrusions 36 include protrusions 36A in which screw holes 37 are formed, and protrusions 36B in which screw holes 37 are not formed. Protrusions 36A in which screw holes 37 are formed are larger than protrusions 36B in which screw holes 37 are not formed. This improves the strength of protrusions 36A, which are subject to a large load when the screws 5 are screwed in.
  • the tip surface of the protrusion 36A in which the screw hole 37 is formed is formed into a flat surface.
  • the pressure generated when the screw 5 is screwed into the protrusion 36A is easily dispersed by the flat surface at the tip of the protrusion 36A. This further improves stability when the vibration-damping member 1 is fixed to the installation surface, and also reduces the possibility of deformation or damage to the member and the installation surface.
  • a countersink is formed on the mating surface 32 side of the screw hole 37.
  • the countersink is a step formed at the entrance of the screw hole 37, with a diameter larger than the diameter of the head of the screw 5.
  • the depth of the countersink is designed to be deeper than the thickness of the head of the screw 5 used.
  • multiple (four) screw holes 37 are formed in the base portion 30.
  • the elastic part 10 is integrally molded around the base part 30, and on the object side of the screw hole 37 formed in the base part 30, a screw hole exposure part 18 is formed by omitting material to expose (open) the screw hole 37.
  • a screw hole exposure part 17 is formed by omitting material to expose (open) the protrusion 36A and the screw hole 37. Therefore, the worker can easily insert the screw 5 into the screw hole 37. Also, even if the screw 5 is screwed into the screw hole 37, the elastic part 10 is unlikely to be damaged.
  • protrusion exposure portions 16 are formed by omitting material to expose the protrusions 36B.
  • the vibration-damping member 1 is fixed to the installation surface, the protrusions 36B come into appropriate contact with the installation surface.
  • the base portion 30 has an insertion hole 39 formed therein, which penetrates from the mating surface 32 (see Figure 3) to the fixed surface 33 (see Figure 4) and through which the elastic portion 10 is inserted.
  • the elastic portion 10 is filled (flowed into) the insertion hole 39 by injection molding and then integrally molded.
  • the material of the base part 30 in this embodiment includes a material having magnetic force. Therefore, if a substance to which a magnet is attached exists on the installation surface side on which the vibration-damping member 1 is installed, the base part 30 is fixed to the installation surface by magnetic force. Therefore, the worker can fix the vibration-damping member 1 to the installation surface more easily. For example, the worker can screw in the screw 5 while the vibration-damping member 1 is temporarily fixed to an appropriate position on the installation surface by magnetic force. Therefore, the vibration-damping member 1 can be fixed to the installation surface more appropriately.
  • vibration-damping member 1 is firmly fixed by the magnetic force of the base part 30, it is also possible to omit various configurations for fixing the vibration-damping member 1 with the screw 5 (for example, the screw hole 37 of the base part 30, etc.).
  • the base 30 is made of a plastic magnet that can be processed using a compound made of plastic containing magnetic powder as a raw material. Therefore, the base 30 can be appropriately formed with magnetic force by various methods such as injection molding or compression molding.
  • the material of the base 30 can be changed.
  • the base 30 can be formed with magnetic force by adding at least one of a magnet and a magnetic sheet to at least a part of the base 30. It is also possible to form the base 30 without including a magnetic material in the material of the base 30.
  • ABS resin which has high rigidity, durability, and impact resistance and is easy to process, can be used as the material of the base 30.
  • At least one of a rigid metal (e.g., stainless steel) and a synthetic resin can be used as the material of the base 30.
  • FIG. 6 is a perspective view of the vibration-damping member 101 of the first modified example, viewed from the surface 2 side (the side that contacts the opposing object).
  • the surface 2 i.e., the surface that contacts the opposing object
  • the opposing object side upper side of the figure
  • the elastic part 110 does not need to be provided with the protrusion 11 (see Figures 1, 3, and 5). Even in this case, the effects of vibration are appropriately suppressed.
  • the positions and number of the screw holes through which the screws 5 are inserted can be changed, as shown in the first modified example.
  • FIG. 7 is a perspective view of the vibration-damping member 201 of the second modified example, viewed from the front side (the side that comes into contact with the opposing object).
  • the shape of the vibration-damping member 201 is not limited to a substantially rectangular parallelepiped shape, and may be formed into a substantially disc shape, etc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)
PCT/JP2023/037791 2022-10-19 2023-10-19 制振部材 Ceased WO2024085202A1 (ja)

Priority Applications (2)

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CN202390000594.9U CN223768017U (zh) 2022-10-19 2023-10-19 减振部件

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JP2022-167884 2022-10-19

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211379A (en) * 1975-07-17 1977-01-28 Mitsubishi Steel Mfg Co Ltd Vibration damping method and the damping material
JPS6056542A (ja) * 1983-09-07 1985-04-02 九州日立マクセル株式会社 樹脂成形品への可塑物層の積層成形方法
JPH01163236U (https=) * 1988-05-09 1989-11-14
JPH10146234A (ja) * 1996-11-19 1998-06-02 Meidensha Corp 机上への装置の固定手段
JP2008075704A (ja) * 2006-09-19 2008-04-03 Tdo Graphics Co Ltd 振動吸収シート
JP2009039374A (ja) * 2007-08-10 2009-02-26 Nisshin Kagaku:Kk 粘着性マット及び粘着性吸盤付き支持具
JP2011111499A (ja) * 2009-11-25 2011-06-09 Kuraray Co Ltd 家電製品用防振部材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5211379A (en) * 1975-07-17 1977-01-28 Mitsubishi Steel Mfg Co Ltd Vibration damping method and the damping material
JPS6056542A (ja) * 1983-09-07 1985-04-02 九州日立マクセル株式会社 樹脂成形品への可塑物層の積層成形方法
JPH01163236U (https=) * 1988-05-09 1989-11-14
JPH10146234A (ja) * 1996-11-19 1998-06-02 Meidensha Corp 机上への装置の固定手段
JP2008075704A (ja) * 2006-09-19 2008-04-03 Tdo Graphics Co Ltd 振動吸収シート
JP2009039374A (ja) * 2007-08-10 2009-02-26 Nisshin Kagaku:Kk 粘着性マット及び粘着性吸盤付き支持具
JP2011111499A (ja) * 2009-11-25 2011-06-09 Kuraray Co Ltd 家電製品用防振部材

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JP7803595B2 (ja) 2026-01-21
JPWO2024085202A1 (https=) 2024-04-25

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