WO2014196196A1 - 防振構造、及び防振構造を備える遮蔽体 - Google Patents
防振構造、及び防振構造を備える遮蔽体 Download PDFInfo
- Publication number
- WO2014196196A1 WO2014196196A1 PCT/JP2014/002968 JP2014002968W WO2014196196A1 WO 2014196196 A1 WO2014196196 A1 WO 2014196196A1 JP 2014002968 W JP2014002968 W JP 2014002968W WO 2014196196 A1 WO2014196196 A1 WO 2014196196A1
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- WIPO (PCT)
- Prior art keywords
- vibrating body
- vibration
- shield
- peripheral
- mounting component
- Prior art date
Links
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 87
- 238000003780 insertion Methods 0.000 claims abstract description 12
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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Images
Classifications
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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
- F16F15/04—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 using elastic means
- F16F15/06—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 using elastic means with metal springs
- F16F15/073—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 using elastic means with metal springs using only leaf springs
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0241—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread with the possibility for the connection to absorb deformation, e.g. thermal or vibrational
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0258—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using resiliently deformable sleeves, grommets or inserts
-
- 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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/32—Belleville-type springs
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
Definitions
- the present invention relates to a connecting structure provided at a connecting portion between a vibrating body that generates vibration and a mounting part to be mounted on the vibrating body, and more particularly, to a vibration isolating structure that suppresses vibration transmitted from the vibrating body to the mounting part.
- the present invention relates to a shield provided with an anti-vibration structure.
- An engine, an exhaust manifold attached to the engine, a turbocharger, and the like are vibrators that are affected by the engine or that vibrate themselves.
- Various components are mounted on such a vibrating body.
- the shield generally includes two metal plates arranged opposite to each other and a heat insulating member interposed therebetween, and other shields around the engine of physical energy such as heat and sound emitted from the vibrator. It is configured to shield parts and transmission to the outside of the vehicle.
- Such a shield may be damaged or generate abnormal noise by directly or indirectly receiving vibration from the vibrating body.
- Patent Document 1 a technique of applying a vibration isolation structure to a connecting portion between a vibrating body and a mounting component is disclosed (for example, Patent Document 1).
- a grommet including a weight member (dump mass) whose weight is adjusted is interposed between the vibrating body and the mounted component to suppress vibration.
- the conventional vibration-proof structure cannot solve the following problems.
- the parts constituting the vibration isolation structure itself are made of an elastic body, but the parts around the engine are required to have heat resistance. Therefore, it must be made of metal, and a metal part cannot be as elastic as a rubber part. In this case, vibration absorption depends exclusively on the elastic characteristics of the component itself.
- the present invention has been made to solve such problems, and absorbs vibration from a vibrating body by actively adopting a shape that exhibits elasticity while being made of a heat-resistant metal.
- An object of the present invention is to provide a possible anti-vibration structure and a shield provided with such an anti-vibration structure.
- the vibration isolating structure of the present invention is provided at a connecting portion between a vibrating body that generates vibration and a predetermined mounting part mounted on the vibrating body, and transmits the vibration body to the mounting part.
- a vibration isolator structure that suppresses vibrations, and is in contact with the vibrator and has a through-hole through which a fixture for fixing the mounting component to the vibrator is inserted.
- a peripheral edge located at the peripheral edge of the vibration isolating structure, and between the vibrator contact part and the peripheral part, so as to surround the vibrator contact part in a single layer or a double or more.
- a slit is formed, and a bridging portion that bridges between the vibrating body contact portion and the peripheral portion is provided.
- the shielding body of the present invention is a shielding body that shields predetermined physical energy emitted from the vibrating body as well as the mounting part, and has the above-described vibration-proof structure.
- the vibration body abutting portion and the slit formed so as to surround the vibration body abutting portion are provided, and the bridge portion formed thereby has an elastic action.
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the vibration proof structure which comprises the vibration proof structure concerning 1st embodiment of this invention, (a) is AA sectional drawing, (b) is BB sectional drawing, (c) is C FIG. FIG.
- FIG. 5 is a cross-sectional view taken along line AA of a vibration isolating structure that constitutes a modification of the vibration isolating structure according to the first embodiment of the present invention. It is an assembly perspective view which shows the relationship between the vibration isolator structure which comprises the vibration isolator structure which concerns on 1st embodiment of this invention, a vibrating body, a shield main body, and a fixing tool. It is a perspective view for demonstrating the attachment method to the shielding body main body of the vibration proof structure which comprises the vibration proof structure which concerns on 1st embodiment of this invention, (a) is a hole to be locked. The figure which shows the state inserted in (b) is a figure which shows the state which bent and joined the latching claw.
- FIG. 1 It is sectional drawing which shows the state which the anti-vibration structure which comprises the anti-vibration structure which concerns on 1st embodiment of this invention has joined to the anti-vibration structure itself, without joining to a shield main body.
- a shield body provided with a vibration isolating structure according to the first embodiment of the present invention.
- a perspective view of the shield concerning a second embodiment of the present invention.
- FIG. 5A is a cross-sectional view taken along the line XX
- FIG. 5B is a cross-sectional view taken along the line YY
- FIG. 5X sectional drawing of the modification of the vibration isolating structure which concerns on 2nd embodiment of this invention.
- It is an assembly perspective view which shows the relationship between the shielding body which concerns on 2nd embodiment of this invention, a vibrating body, and a fixing tool.
- FIGS. 9 to 14 show a second embodiment of the present invention.
- the vibration isolating structure according to these embodiments is applied to a shield 100 attached to a vibrating body 200 such as an engine, an exhaust manifold attached to the engine, and a turbocharger. Since the vibrating body 200 such as an engine, an exhaust manifold, and a turbocharger emits not only vibration but also physical energy such as sound and heat associated with the vibration, the shielding body 100 is disposed around the engine of such physical energy. It is configured to shield other parts and transmission outside the vehicle.
- the shield 100 includes a plurality of parts such as two metal plates opposed to each other and a plate-like heat insulating member interposed therebetween, as shown in FIGS. 8 and 9.
- the cover 200 covers all or part of the vibrating body 200.
- Such a shield 100 is manufactured, for example, by sandwiching a heat insulating member between two metal plates that have been previously formed into a shape that conforms to the outer shape of the vibrating body 200 and folding the peripheral edges of the two metal plates together. can do.
- the anti-vibration structure according to the first embodiment of the present invention is applied to the anti-vibration structure 1 configured as one part of such a shield 100, and the anti-vibration structure 1 includes the shield 100 and the vibration body.
- the vibration isolation structure 1 that operates as the vibration isolation structure will be described.
- the vibration-proof structure 1 is formed of a flat plate member having a disk shape that can be fitted into an attachment hole 101 formed in the main body of the shield 100.
- the vibration isolating structure 1 is provided at the connecting portion between the shield 100 and the vibrating body 200, it has not only rigidity but also heat resistance, such as stainless steel, magnesium, iron, and the like. It is formed of a spring steel plate made of an alloy or the like, and a metal material obtained by subjecting these to a plating treatment. Although such a metal plate cannot be expected to be as elastic as an elastic body such as rubber, the vibration isolating structure 1 of the present embodiment absorbs vibration transmitted from the vibrating body 200 to the shielding body 100. Therefore, it has a characteristic shape as shown below.
- the vibration-proof structure 1 includes a vibrating body contact portion 2, a peripheral edge portion 4, a slit S, and a bridging portion 3 as characteristic shapes.
- the vibrating body abutting portion 2 is a portion that is in contact with the vibrating body 200, and has an insertion hole 21 through which a fixture 300 such as a bolt, a screw, and a rivet for fixing the shield 100 to the vibrating body 200 is inserted. I have.
- the shape of the vibrating body abutting portion 2 is circular, but it may be other shapes such as a square.
- the peripheral portion 4 is a portion that is located on the peripheral edge of the vibration-proof structure 1 and is in contact with the shield 100 main body, and is inserted into a locked hole 102 that is formed around the attachment hole 101 of the shield 100.
- a locking claw 41 (41a to 41d) that is bent and locked to the main body of the shield 100 is provided later.
- the locking claws 41a to 41d are erected substantially perpendicularly to the surface direction of the peripheral edge portion 4, and have a predetermined radius around the insertion hole 21 so as to evenly distribute the vibration transmitted from the vibrating body 200.
- Four are arranged at equal intervals (for example, 90 degrees) on the circumference of a circle having a circle.
- the locking claws 41a to 41d are arranged at equal intervals, the number is not limited to four.
- Slit S (S1, S2) is an opening part arrange
- the two slits S1 and S2 are divided by the bridging portion 3, the slit S1 is composed of slits S1a and S1b, and the slit S2 is composed of slits S2a and S2b.
- the slits S1a and S1b have a width (WS1) of 0.5 to 5.0 (mm), and the slits S2a and S2b have a width (WS2) of 0.5 to 5.0 (mm).
- slits S (S1, S2) By forming such slits S (S1, S2), the following effects are exhibited. If such a slit S (S1, S2) is not formed and the vibrating body contact portion 2 and the peripheral edge portion 4 are connected to the ground, the vibration from the vibrating body contact portion 2 is Although it is influenced by the distance between them and increases or decreases, it is directly transmitted to the peripheral edge 4. Therefore, if the slits S (S1, S2) are provided as in the present embodiment, a part of the vibration is dissipated from the peripheral part of the slit S and is transmitted from the vibrating body contact part 2 to the peripheral part 4. Will be attenuated.
- the vibration transmitted to the peripheral part 4 is attenuated as the number of such slits S increases, it is preferably double or more than single.
- the slits S (S1, S2) are preferably formed in a shape along the circumference of a circle having a predetermined radius centered on the insertion hole 21, but the insertion hole 21 is the center. It can also be formed in a shape along a regular polygon such as a square.
- an edge portion having an acute angle or an obtuse angle is formed in the peripheral portion of the slit S (S1, S2), but a corner R can be formed in this portion in order to prevent cracks from occurring.
- the bridging portion 3 is a portion that spans between the vibrating body abutting portion 2 and the peripheral edge portion 4, and in this embodiment, the vibrating body abutting portion 2 and the vibrating body abutting portion 2 are formed so as to form a route R (see FIG. 1). It is formed so as to bridge the periphery 4.
- the intermediate bridging portion 31 disposed between the two slits S1 and S2, and the vibrator-side bridging portion 32 (32a, 32b) that connects the intermediate bridging portion 31 and the vibrator contact portion 2 are connected.
- a peripheral bridge portion 33 (33a, 33b) that connects the intermediate bridge portion 31 and the peripheral portion 4 is formed.
- the bridging portion 3 has an arrangement relationship that is not located on the same radiation (normal line) as the locking claw 41 on the radiation spreading around the insertion hole 21.
- the latching claw 41 and the peripheral side bridge portion 33 have an arrangement relationship that is not located on the same radiation.
- the locking claw 41 and the vibrating body side bridging portion 32 have an arrangement relationship that is not located on the same radiation.
- the slit S2 is interposed between the locking claw 41 and the vibrating body side bridge portion 32, the vibration transmitted through the vibrating body side bridge portion 32 is directly transmitted to the locking claw 41. Since it is not (at least detouring the intermediate
- the vibrator-side bridge portions 32a and 32b and the peripheral-side bridge portions 33a and 33b are arranged so as to be orthogonal to each other in a cross shape when viewed from the front. Thereby, the vibration from the vibrating body abutting portion 2 follows the longest path and is transmitted to the peripheral portion 4, so that the vibration attenuation rate can be further increased.
- two vibrator-side bridging portions 32 and two peripheral-side bridging portions 33 are provided, but the number of the vibrator-side bridging portions 32 and the peripheral-side bridging portions 33 is not limited to this number.
- a predetermined contact with respect to the abutting surface (the back surface of the vibrating body abutting portion 2) of the vibrating body abutting portion 2 is brought into contact with the vibrating body 200.
- a step portion having a gradient is provided.
- the vibrating body side bridging portion 32 (32a, 32b) is formed as a stepped portion, and the surface of the vibrating body abutting portion 2 is interposed between the vibrating body abutting portion 2 and the intermediate bridging portion 31.
- a predetermined gradient (for example, about the surface direction of the vibrator contact portion 2 is formed so that a height difference of a height H1 (for example, 0 to 2 (mm)) is formed in a direction perpendicular to the direction. It spans between them with an inclination of 45 degrees.
- the stepped portion is provided in the E direction (surface of the vibrating body abutting portion 2) in FIG. (Direction) is absorbed, vibration transmitted from the vibrating body 200 to the shield 100 is further suppressed.
- such a stepped portion forms a height difference H1 between the vibrating body abutting portion 2 and the peripheral edge portion 4. Therefore, for example, the shielding body 100 has an arrangement relationship as shown in FIG. Is attached to the vibrating body 200, since the peripheral edge portion 4 is at a position H1 higher than the vibrating body contact portion 2 (upward in the figure), the shielding body 100 is separated from the vibrating body 200 by the height difference H1 ( Therefore, direct transmission of physical energy from the vibrating body 200 to the shield 100 can be avoided.
- the peripheral side bridge portion 33 (33a, 33b) can be formed as a stepped portion.
- a height H2 for example, 0 to 2 (mm)
- H2 between the intermediate bridging portion 31 and the peripheral edge portion 4 in a direction perpendicular to the surface direction of the vibrator contact portion 2
- the height difference from 200 (H2-H1) can be separated.
- the stepped portion can be provided not only in the vibrating body side bridge portion 32 and the peripheral side bridge portion 33 but also in the intermediate bridge portion 31.
- a plurality of stepped portions can be formed in the intermediate bridge portion 31 by applying a corrugation process to the intermediate bridge portion 31.
- the anti-vibration structure 1 configured as described above is assembled as follows while having an arrangement relationship as shown in FIG. Specifically, the vibration isolating structure 1 is first attached to the shield 100, and in this state, the fixture 300 such as a bolt is passed through the insertion hole 21, and the fixture 300 is formed in the vibrator 200. Screwed into the fixing hole 201. Accordingly, the shield 100 can be attached to the vibrating body 200 while the anti-vibration structure 1 serving as a connecting part is interposed between the shield 100 and the vibrating body 200. Since the shield 100 mounted in this manner transmits vibration from the vibration body 200 via the vibration isolation structure 1, each part of the vibration isolation structure 1 described above cooperates organically. As described below, vibration transmitted from the vibrating body 200 to the shield 100 is suppressed.
- the vibration from the vibrating body 200 is directly transmitted to the vibrating body contact portion 2 that is in contact with the vibration body 200.
- the vibrating body abutment portion 2 and the peripheral edge portion 4 are not connected to each other, and slits S1 and S2 are interposed therebetween.
- a part of the vibration from the vibrating body 200 is dissipated from the peripheral portions of the slits S1 and S2, and the vibration transmitted from the vibrating body contact portion 2 to the peripheral portion 4 is attenuated.
- the vibrating body contact portion 2 and the peripheral edge portion 4 are connected via the bridging portion 3.
- the bridging portion 3 is flexible because it is formed in a thin plate shape having a predetermined width, and the bridging portion 3 operates as a leaf spring, for example, to absorb vibration in the D direction ( FIG. 2 (b)). Furthermore, since the bridging portion 3 includes the vibrator-side bridging portion 32 formed as a step portion, for example, vibration in the E direction is absorbed (see FIG. 2B). Moreover, since the bridge
- Such an anti-vibration structure 1 is one of the components constituting the shield 100, and the state attached to the main body of the shield 100 is a product form.
- the anti-vibration structure 1 as a primary part can be manufactured, for example, by punching a metal flat plate member into a shape shown in FIG.
- Such an anti-vibration structure 1 is attached to the main body of the shield 100 as described below, and the shield 100 in the final form is manufactured.
- the locking claws 41a to 41d are inserted through the locked holes 102a to 102d formed in the main body of the shield 100, respectively. Subsequently, the locking claws 41a to 41d are pressed while being inclined toward the insertion hole 21 by a press machine or the like so as to be in contact with the shield 100 main body. As a result, as shown in FIG. 6B, the locking claws 41a to 41d are locked to the locked holes 102a to 102d, and the vibration isolating structure 1 is integrated with the shield 100 main body.
- the vibration isolating structure 1 can be made unremovable from the main body of the shield 100 by joining the locking claws 41a to 41d to predetermined positions. Specifically, the locking claws 41a to 41d are joined only to the peripheral portion of the attachment hole 101, or both of the peripheral portion and the peripheral portion 4 of the attachment hole 101, or only to the peripheral portion 4. 1 is not removable from the main body of the shield 100. In particular, as shown in FIG. 7, it is preferable that the locking claw 41 is bonded only to the peripheral edge 4 without being bonded to the peripheral edge of the mounting hole 101. For example, at the point P shown in FIG. 7 (corresponding to the portion where the tip of the locking claw 41 and the peripheral edge 4 overlap in FIG.
- the tip of the locking claw 41d and the peripheral edge 4 are joined. Then, an enclosed space K that surrounds the peripheral edge of the attachment hole 101 is formed inside the bent locking claw 41d.
- the peripheral portion of the mounting hole 101 (the main body of the shielding body 100) can swing while being restrained in the surrounding space K. Vibration is transmitted to the main body of the shield 100 with play, and vibration from the vibration body 200 to the shield 100 is further attenuated and transmitted.
- the anti-vibration structure 1 is integrated into the main body of the shield 100, and the final form of the shield 100 is manufactured.
- joining can be suitably selected from various joining methods, such as welding (for example, spot welding), welding, and adhesion.
- the slit S is provided between the vibrating body abutting portion 2 and the peripheral edge portion 4, and the bridging portion spanned between them.
- 3 exhibits an elastic action, vibration from the vibrating body 200 is absorbed and attenuated, and transmission to the shielding body 100 can be suppressed.
- the vibration isolating structure 1 configured as one component of the shield 100 is provided at the connecting portion between the shield 100 and the vibrator 200, so that the vibration is transmitted from the vibrator 200 to the shield 100.
- the characteristic shape with which the vibration-proof structure 1 of the first embodiment is provided is formed in the connecting portion of the shield 100 with the vibrating body 200, so that the vibrating body 200 The vibration transmitted to the main body of the shield 100 excluding the connecting portion is suppressed.
- the second embodiment will be described with a focus on differences from the first embodiment, and description of points common to the first embodiment will be omitted as appropriate.
- a vibrating body abutting portion 2, a peripheral edge portion 4, a slit S, and a bridging portion 3 are formed as a part of the shielding body 100 at a connection portion between the shielding body 100 and the vibrating body 200.
- the vibrating body abutting portion 2 is a portion that is in contact with the vibrating body 200, and has an insertion hole 21 through which a fixture 300 such as a bolt, a screw, and a rivet for fixing the shield 100 to the vibrating body 200 is inserted.
- the peripheral portion 4 is formed as a portion that is located at the periphery of the connecting portion of the shield 100 with the vibrating body 200 and that is connected to the main body of the shield 100 excluding the connecting portion.
- Slit S (S1, S2) is an opening part arrange
- the shape of the vibrating body abutting portion 2 is circular.
- other shapes such as a square can be used, as in the first embodiment, and the slits S (S1, S2) are specific. Since the general shape is the same as that of the first embodiment, the description thereof is omitted.
- the slit S (S1, S2) by forming the slit S (S1, S2), a part of the vibration from the vibrating body contact portion 2 is dissipated from the peripheral portion of the slit S, and the peripheral edge from the vibrating body contact portion 2 The vibration transmitted to the unit 4 is attenuated.
- the bridging portion 3 that is a portion that bridges between the vibrating body contact portion 2 and the peripheral edge portion 4 forms the route R. (Refer to FIG. 10), it is formed so as to bridge between the vibrating body abutting portion 2 and the peripheral edge portion 4 formed at the connecting portion of the shield 100 with the vibrating body 200.
- the intermediate bridging portion 31 disposed between the two slits S1 and S2, and the vibrator-side bridging portion 32 (32a, 32b) that connects the intermediate bridging portion 31 and the vibrator contact portion 2 are connected.
- a peripheral bridge portion 33 (33a, 33b) connecting the intermediate bridge portion 31 and the peripheral portion 4 is formed.
- the vibrator-side bridge portions 32a and 32b and the peripheral-side bridge portions 33a and 33b are arranged so as to be orthogonal to each other in a cross shape when viewed from the front. Thereby, the vibration from the vibrating body abutting portion 2 follows the longest path and is transmitted to the peripheral portion 4, so that the vibration attenuation rate can be further increased.
- two vibrator-side bridging portions 32 and two peripheral-side bridging portions 33 are provided, but the number of the vibrator-side bridging portions 32 and the peripheral-side bridging portions 33 is not limited to this number.
- a predetermined contact with respect to the abutting surface (the back surface of the vibrating body abutting portion 2) of the vibrating body abutting portion 2 is brought into contact with the vibrating body 200.
- a step portion having a gradient is provided.
- the vibrating body side bridging portion 32 (32a, 32b) is formed as a stepped portion, and the surface of the vibrating body abutting portion 2 is interposed between the vibrating body abutting portion 2 and the intermediate bridging portion 31.
- a predetermined gradient (for example, about the surface direction of the vibrator contact portion 2 is formed so that a height difference of a height H1 (for example, 0 to 2 (mm)) is formed in a direction perpendicular to the direction. It spans between them with an inclination of 45 degrees.
- the stepped portion is provided in the E direction (surface of the vibrating body abutting portion 2) in FIG. (Direction) is absorbed, vibration transmitted from the vibrating body 200 to the main body of the shield 100 is further suppressed.
- the shielding member 100 since the step difference portion forms a height difference H1 between the vibrating body abutting portion 2 and the peripheral edge portion 4, for example, the shielding member 100 has an arrangement relationship as shown in FIG. Is attached to the vibrating body 200, since the peripheral edge portion 4 is at a position H1 higher than the vibrating body abutting portion 2 (upward in the figure), the main body of the shield 100 is separated from the vibrating body 200 between the height difference H1 separation. Therefore, direct transmission of physical energy from the vibrating body 200 to the main body of the shield 100 can be avoided.
- the peripheral side bridge portion 33 (33a, 33b) can be formed as a stepped portion.
- a height H2 for example, 0 to 2 (mm) in a direction perpendicular to the surface direction of the vibrating body contact portion 2 between the intermediate bridge portion 31 and the main body of the shield 100 is provided.
- the peripheral bridge portion 33 (33a, 33b) can be bridged between them while having a predetermined gradient.
- the intermediate cross-linking portion 31 is at a position higher by H2 than the main body of the shield 100, but by forming the step portion so as to satisfy the relationship of H1> H2, the shield 100 has a shape as described above.
- the main body can be separated from the vibrator 200 by a height difference (H2 ⁇ H1).
- the stepped portion can be provided not only in the vibrating body side bridge portion 32 and the peripheral side bridge portion 33 but also in the intermediate bridge portion 31.
- a plurality of stepped portions can be formed in the intermediate bridge portion 31 by applying a corrugation process to the intermediate bridge portion 31.
- the shield 100 configured as described above has a positional relationship as shown in FIG. 14, and in this state, the fixing tool 300 such as a bolt is passed through the insertion hole 21, and the fixing tool 300 is passed through the vibrating body 200. And screwed into the fixing hole 201 formed in. Thereby, the shield 100 can be attached to the vibrating body 200. Since the shield 100 mounted in this way transmits vibrations from the vibrating body 200 through the connecting portion as described above, each portion of the connecting portion cooperates organically, and As described above, vibration transmitted from the vibrating body 200 to the main body of the shielding body 100 is suppressed.
- the vibration from the vibrating body 200 is directly transmitted to the vibrating body contact portion 2 that contacts the vibration body 200.
- the vibrating body abutment portion 2 and the peripheral edge portion 4 are not connected to each other, and slits S1 and S2 are interposed therebetween. Thereby, a part of the vibration from the vibrating body 200 is dissipated from the peripheral portions of the slits S1 and S2, and the vibration transmitted from the vibrating body contact portion 2 to the peripheral portion 4 is attenuated. Further, the vibrating body contact portion 2 and the peripheral edge portion 4 are connected via the bridging portion 3.
- the bridging portion 3 is flexible because it is formed in a thin plate shape having a predetermined width, and the bridging portion 3 operates as a leaf spring, for example, to absorb vibration in the D direction ( (Refer FIG.11 (b)). Furthermore, since the bridging portion 3 includes the vibrator-side bridging portion 32 formed as a step portion, for example, vibration in the E direction is absorbed (see FIG. 11B). Moreover, since the bridge
- the slit S is provided between the vibrating body abutting portion 2 and the peripheral edge portion 4, and the bridging portion 3 spanned between them exhibits an elastic action. Vibration from the vibrating body 200 is absorbed and attenuated, and transmission to the shield 100 can be suppressed.
- the vibration isolating structure of the present invention and the shielding body including the same has been described.
- the vibration isolating structure according to the present invention and the shielding body including the same are not limited to the above-described embodiments. It goes without saying that various modifications can be made within the scope of the present invention.
- the shield 100 is formed of two metal plates, but may be formed of one or more metal plates. Further, in order to avoid the concentration of torsional stress on the bridging portion 3 due to screwing of the fixing tool 30, for example, in order to improve the sliding of the surface (front and back) of the vibrating body side washer portion 2, this portion or the whole is covered with molybdenum. A sliding process such as a coating process can also be performed.
- the present invention can be widely used for a shielding body that covers a vibrating body that generates vibration, such as an engine, an exhaust manifold attached to the engine, and a turbocharger.
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Abstract
Description
このような振動体には様々な部品が装着されており、例えば、装着部品として、エキゾーストマニホールドカバー、ヒートインシュレーターなどと称される遮蔽体がある。
遮蔽体は、一般的に、対向配置される二枚の金属板と、これらの間に介在する断熱部材とを備え、振動体から発せられる熱、音などの物理的エネルギーのエンジン周りの他の部品や車外への伝達を遮蔽するように構成されている。
このような遮蔽体は、振動体からの振動を直接又は間接的に受けて、破損したり異音を発生したりすることがある。
例えば、特許文献1に記載の防振構造では、振動体と装着部品との間に、重量調整されたおもり部材(ダンプマス)を備えるグロメットを介在させて、振動を抑制するようになっている。
例えば、振動体からの振動を吸収するためには、防振構造を構成する部品自体が弾性体で構成される方が有利に作用することになるが、エンジン周りの部品には耐熱性が要求されることから金属で構成しなければならず、金属製の部品ではゴム製の部品ほどの弾性効果を望むことはできない。そうすると、振動の吸収は専ら構成部品そのものの弾性特性に依存してしまうことになる。
なお、図1~図8は、本発明の第一実施形態を示し、図9~図14は、本発明の第二実施形態を示している。
エンジン、エキゾーストマニホールド、及びターボチャージャーなどの振動体200は振動のみならず、振動に伴う音、熱などの物理的エネルギーを発することから、遮蔽体100は、このような物理的エネルギーのエンジン周りの他の部品や車外への伝達を遮蔽するように構成されている。
このような遮蔽体100は、例えば、予め振動体200の外形に適合した形状に成形加工された二枚の金属板の間に断熱部材を挟み込み、二枚の金属板の周縁を共に折り返すことにより、製造することができる。
本発明の第一実施形態に係る防振構造は、このような遮蔽体100の一つの部品として構成される防振構造体1に適用され、この防振構造体1が遮蔽体100と振動体200との連結部分に設けられることにより、振動体200から遮蔽体100へ伝達される振動を抑制するようになっている。
以下、防振構造として動作する防振構造体1について説明する。
例えば、防振構造体1は、大きさD(=12~100(mm))の外形、及び0.05~1.20(mm)の板厚を有している。
また、防振構造体1は、遮蔽体100と振動体200との連結部分に設けられることから、剛性を備えることはもちろんのこと、耐熱性を備える、例えば、ステンレス、マグネシウム、鉄、これらの合金等からなるバネ鋼板、及びこれらにメッキ処理等を施した金属材料で形成されている。
このような金属製の板材ではゴムなどの弾性体ほどの弾性効果を望むことはできないものの、本実施形態の防振構造体1は、振動体200から遮蔽体100へ伝達される振動を吸収すべく、以下に示すような特徴的な形状を備えている。
本実施形態では、振動体当接部2の形状を円形としたが、四角などの他の形とすることもできる。
係止爪41a~41dは、周縁部4の面方向に対してほぼ垂直に立設され、振動体200から伝達される振動を均等に分散するように、挿通孔21を中心とする所定の半径を有する円の円周上に等間隔(例えば、90度)に4つ配置されている。
このように、係止爪41a~41dは等間隔に配置されることが好ましいものの、その数は四つに限定されない。
本実施形態では、スリットS(S1,S2)は、挿通孔21を中心とする所定の半径(例えば、S1内側半径(RS1)=9(mm),S2内側半径(RS2)=12.5(mm)を有する円の円周に沿った円弧状に形成されるとともに、二重に亘って振動体当接部2を取り囲むように、二条のスリットS1,S2が形成されている。
二条のスリットS1,S2は、架橋部3によってそれぞれ分断され、スリットS1はスリットS1a,S1b、スリットS2はスリットS2a,S2bから構成されている。
また、スリットS1a,S1bは幅(WS1)0.5~5.0(mm)、スリットS2a,S2bは幅(WS2)0.5~5.0(mm)を有するとともに、それぞれ挿通孔21を中心とする所定の中心角(例えば、AS1,AS2=約150度)に亘って開口されている。
仮に、このようなスリットS(S1,S2)が形成されることなく、振動体当接部2と周縁部4とが地続きにつながっているとすると、振動体当接部2からの振動はこれらの間の距離に左右されて増減するものの周縁部4に直接的に伝達されることになる。そこで、本実施形態のようにスリットS(S1,S2)を設けることとすれば、一部の振動がスリットS周縁部から放散され、振動体当接部2から周縁部4へ伝達される振動が減衰されることになる。
また、本実施形態のようにスリットS(S1,S2)は、挿通孔21を中心とする所定の半径を有する円の円周に沿った形状に形成することが好ましいが、挿通孔21を中心とする正方形などの正多角形に沿った形状に形成することもできる。
さらに、本実施形態では、スリットS(S1,S2)の周縁部において、鋭角又は鈍角のエッジ部分を形成したが、亀裂発生防止のため、この部分にコーナーRを形成することもできる。
このような架橋部3により、振動体当接部2からの振動は、振動体側架橋部32を経て中間架橋部31に伝達され、さらに、円弧状に形成された中間架橋部31を周回して、周縁側架橋部33を経て周縁部4に伝達されることになる。
また、架橋部3は、例えば、中間架橋部31の幅がW1=0.5~10.0(mm)、振動体側架橋部32の幅がW2=0.5~10.0(mm)、周縁側架橋部33の幅がW3=0.5~10.0(mm)となる、細板状に形成されている。
このような構成により、架橋部3全体が板バネとして動作し、例えば、図2(b)中のD方向(振動体側座金部2の面方向に対して垂直な方向)の振動を吸収することができる。特に、ルートRが略S字を描くことから、架橋部3が螺旋形状の板バネとして動作する。
例えば、係止爪41と周縁側架橋部33とは、同じの放射線上に位置しない配置関係を有している。これにより、振動体当接部2から係止爪部41へ至る経路が長くなることから、経路の途中で減衰する振動の割合を増加させることができる。
また、同様に、係止爪41と振動体側架橋部32も同じの放射線上に位置しない配置関係を有している。なお、この場合、係止爪41と振動体側架橋部32との間にはスリットS2が介在することから、振動体側架橋部32を経て伝達される振動が係止爪41に直接伝達されるわけではないので(少なくとも中間架橋部31を迂回する)、係止爪41と振動体側架橋部32とを同じ放射線上に配置させることもできる。
これにより、振動体当接部2からの振動は、最も長い経路を辿って、周縁部4へ伝達されることになり、振動の減衰率をさらに増大させることができる。
なお、本実施形態では、振動体側架橋部32及び周縁側架橋部33をそれぞれ2つ設けたが、振動体側架橋部32及び周縁側架橋部33の数はこの数に限定されない。
具体的には、本実施形態では、振動体側架橋部32(32a,32b)が段差部として形成され、振動体当接部2と中間架橋部31との間に振動体当接部2の面方向に対して垂直な方向に高さH1(例えば、0~2(mm))の高低差が形成されるように、所定の勾配(例えば、振動体当接部2の面方向に対して約45度の傾き)を有しながらこれらの間を架け渡している。
このように、振動体当接部2から周縁部4へ至るまでの経路において、段差部を備えることにより、この段差部が図2(b)中のE方向(振動体当接部2の面方向)の振動を吸収することから、振動体200から遮蔽体100へ伝達される振動がさらに抑制されることになる。
例えば、図4に示すように、中間架橋部31と周縁部4との間に振動体当接部2の面方向に対して垂直な方向に高さH2(例えば、0~2(mm))の高低差が形成されるように、周縁側架橋部33(33a,33b)を所定の勾配を有しながらこれらの間に架け渡すこともできる。
この場合、中間架橋部31の方が周縁部4よりもH2高い位置にあるが、H1>H2の関係を満たすように、段差部を形成することにより、上記のように遮蔽体100を振動体200から高低差(H2-H1)分離間させることができる。
また、段差部は、振動体側架橋部32、周縁側架橋部33のみならず、中間架橋部31にも設けることができる。例えば、中間架橋部31に波付け加工を施すことによって、中間架橋部31に複数の段差部を形成することもできる。
具体的には、防振構造体1は、最初に遮蔽体100に取り付けられ、その状態でボルトなどの固定具300を挿通孔21に貫通させるとともに、この固定具300を振動体200に形成された固定穴201に螺入させる。これにより、遮蔽体100と振動体200との間に連結部品としての防振構造体1を介在させながら、遮蔽体100を振動体200に装着することができる。
このように装着された遮蔽体100は、振動体200からの振動が防振構造体1を介して伝達されることから、前述した防振構造体1の各部が有機的に協働することにより、以下のように、振動体200から遮蔽体100へ伝達される振動が抑制される。
ところが、振動体当接部2と周縁部4との間は地続きにつながらずに、これらの間にはスリットS1,S2が介在している。これにより、振動体200からの振動の一部はスリットS1,S2周縁部から放散され、振動体当接部2から周縁部4へ伝達される振動が減衰することになる。
また、振動体当接部2と周縁部4とは架橋部3を介してつながっている。架橋部3は、所定の幅を有する細板状に形成されていことから可撓性を有することとなり、架橋部3が板バネとして動作することで、例えば、D方向の振動が吸収される(図2(b)参照)。
さらに、架橋部3は、段差部として形成された振動体側架橋部32を備えていることから、例えば、E方向の振動が吸収されることになる(図2(b)参照)。
また、架橋部3は、略S字を描くルートRの振動伝達経路を有して形成されていることから、振動体当接部2から周縁部4へ伝達される振動の伝達経路をなるべく長くして、経路途中での振動の減衰を増進するようになっている。
このように、防振構造体1各部が有機的に協働することにより、振動体200からの振動が遮蔽体100へ減衰されて伝達されることになり、振動の伝達が抑制されることになる。
一次部品としての防振構造体1は、例えば、金属製の平板部材をプレス加工機により図2(a)に示す外形に打ち抜くプレス抜きにより製造することができる。
このような防振構造体1は、以下のように遮蔽体100の本体へ取り付けられて、最終形態となる遮蔽体100が製造されることになる。
続いて、プレス加工機などにより、係止爪41a~41dを、挿通孔21側に傾けながら押圧して遮蔽体100本体に接するように折り曲げる。これにより、図6(b)に示すように、係止爪41a~41dが被係止孔102a~102dに係止され、防振構造体1は遮蔽体100本体と一体化される。
具体的には、係止爪41a~41dを、取り付け孔101の周縁部のみ、又は取り付け孔101の周縁部及び周縁部4の双方、若しくは、周縁部4のみに接合させて、防振構造体1を遮蔽体100本体から取り外し不能とする。
特に、図7に示すように、係止爪41を、取り付け孔101の周縁部に接合させることなく、周縁部4のみに接合させることが好ましい。
例えば、図7に示すポイントPにおいて(図6(b)において係止爪41の先端部と周縁部4とが重なっている部分に相当)、係止爪41dの先端部分と、周縁部4とを接合させる。そうすると、折り曲げられた係止爪41dの内側には、取り付け孔101の周縁部を囲む包囲空間Kが形成されることになる。
このような包囲空間Kを形成することにより、取り付け孔101の周縁部(遮蔽体100の本体)は、この包囲空間K内に拘束されるものの揺動可能となることから、防振構造体1からの振動が遊びをもって遮蔽体100本体に伝達されることになり、振動体200から遮蔽体100への振動がさらに減衰されて伝達されることになる。
このような接合により、防振構造体1が遮蔽体100本体に一体化されて、最終形態の遮蔽体100が製造されることになる。
なお、接合は、溶接(例えば、スポット溶接)、溶着、接着など様々な接合方法のうちから適宜選択することができる。
次に、本発明の第二実施形態について説明する。第一実施形態では、遮蔽体100と振動体200との連結部分に、遮蔽体100の一つの部品として構成される防振構造体1を設けることにより、振動体200から遮蔽体100へ伝達される振動を抑制するようにした。これに対して、本実施形態では、第一実施形態の防振構造体1が備える特徴的な形状を、遮蔽体100の振動体200との連結部分に形成することにより、振動体200から当該連結部分を除く遮蔽体100の本体へ伝達される振動を抑制するようになっている。
以下、第一実施形態と相違する点を中心に第二実施形態について説明し、第一実施形態と共通する点については説明を適宜省略する。
振動体当接部2は、振動体200に当接される部分であり、遮蔽体100を振動体200に固定するためのボルト、ネジ、リベットなどの固定具300の挿通される挿通孔21を備えている。
周縁部4は、遮蔽体100の振動体200との連結部分の周縁に位置して、当該連結部分を除く遮蔽体100の本体に連接する部分として形成される。
スリットS(S1,S2)は、振動体当接部2と周縁部4との間に配置される開口部分であり、一重又は二重以上に亘って振動体当接部2を取り囲むように形成されている。
このような架橋部3により、振動体当接部2からの振動は、振動体側架橋部32を経て中間架橋部31に伝達され、さらに、円弧状に形成された中間架橋部31を周回して、周縁側架橋部33を経て遮蔽体100の本体に伝達されることになる。
また、架橋部3は、例えば、中間架橋部31の幅がW1=0.5~10.0(mm)、振動体側架橋部32の幅がW2=0.5~10.0(mm)、周縁側架橋部33の幅がW3=0.5~10.0(mm)となる、細板状に形成されている。
このような構成により、架橋部3全体が板バネとして動作し、例えば、図11(b)中のD方向(振動体側座金部2の面方向に対して垂直な方向)の振動を吸収することができる。特に、ルートRが略S字を描くことから、架橋部3が螺旋形状の板バネとして動作する。
これにより、振動体当接部2からの振動は、最も長い経路を辿って、周縁部4へ伝達されることになり、振動の減衰率をさらに増大させることができる。
なお、本実施形態では、振動体側架橋部32及び周縁側架橋部33をそれぞれ2つ設けたが、振動体側架橋部32及び周縁側架橋部33の数はこの数に限定されない。
具体的には、本実施形態では、振動体側架橋部32(32a,32b)が段差部として形成され、振動体当接部2と中間架橋部31との間に振動体当接部2の面方向に対して垂直な方向に高さH1(例えば、0~2(mm))の高低差が形成されるように、所定の勾配(例えば、振動体当接部2の面方向に対して約45度の傾き)を有しながらこれらの間を架け渡している。
このように、振動体当接部2から周縁部4へ至るまでの経路において、段差部を備えることにより、この段差部が図11(b)中のE方向(振動体当接部2の面方向)の振動を吸収することから、振動体200から遮蔽体100の本体へ伝達される振動がさらに抑制されることになる。
例えば、図13に示すように、中間架橋部31と遮蔽体100の本体との間に振動体当接部2の面方向に対して垂直な方向に高さH2(例えば、0~2(mm))の高低差が形成されるように、周縁側架橋部33(33a,33b)を所定の勾配を有しながらこれらの間に架け渡すこともできる。
この場合、中間架橋部31の方が遮蔽体100の本体よりもH2高い位置にあるが、H1>H2の関係を満たすように、段差部を形成することにより、上記のように遮蔽体100の本体を振動体200から高低差(H2-H1)分離間させることができる。
また、段差部は、振動体側架橋部32、周縁側架橋部33のみならず、中間架橋部31にも設けることができる。例えば、中間架橋部31に波付け加工を施すことによって、中間架橋部31に複数の段差部を形成することもできる。
このように装着された遮蔽体100は、振動体200からの振動が、前述したような連結部分を介して伝達されることから、当該連結部分の各部が有機的に協働することにより、以下のように、振動体200から遮蔽体100の本体へ伝達される振動が抑制される。
ところが、振動体当接部2と周縁部4との間は地続きにつながらずに、これらの間にはスリットS1,S2が介在している。これにより、振動体200からの振動の一部はスリットS1,S2周縁部から放散され、振動体当接部2から周縁部4へ伝達される振動が減衰することになる。
また、振動体当接部2と周縁部4とは架橋部3を介してつながっている。架橋部3は、所定の幅を有する細板状に形成されていことから可撓性を有することとなり、架橋部3が板バネとして動作することで、例えば、D方向の振動が吸収される(図11(b)参照)。
さらに、架橋部3は、段差部として形成された振動体側架橋部32を備えていることから、例えば、E方向の振動が吸収されることになる(図11(b)参照)。
また、架橋部3は、略S字を描くルートRの振動伝達経路を有して形成されていることから、振動体当接部2から周縁部4へ伝達される振動の伝達経路をなるべく長くして、経路途中での振動の減衰を増進するようになっている。
このように、遮蔽体100の振動体200との連結部分の各部が有機的に協働することにより、振動体200からの振動が遮蔽体100の本体へ減衰されて伝達されることになり、振動の伝達が抑制されることになる。
また、固定具30の螺入に伴う架橋部3へのねじれ応力の集中を回避すべく、例えば、振動体側座金部2の表面(表裏)のすべりを良くするために、この部分又は全体にモリブデンコーティング処理などのすべり加工処理を施すこともできる。
2 振動体当接部
3 架橋部
31 中間架橋部
32(32a,32b) 振動体側架橋部
33(33a,33b) 周縁側架橋部
4 周縁部
41(41a~41d) 係止爪
S(S1,S2) スリット
100 遮蔽体
101 取り付け孔
102(102a~102d) 被係止孔
200 振動体
201 固定穴
300 固定具
Claims (7)
- 振動を発生する振動体と前記振動体に装着される所定の装着部品との連結部分に設けられ、前記振動体から前記装着部品へ伝達される振動を抑制する防振構造であって、
前記振動体に当接されるとともに、前記装着部品を前記振動体に固定するための固定具の挿通される挿通孔を有する振動体当接部と、
当該防振構造の周縁に位置する周縁部と、
前記振動体当接部と前記周縁部との間に配置され、一重又は二重以上に亘って前記振動体当接部を取り囲むように形成されるスリットと、
前記振動体当接部と前記周縁部との間を架け渡す架橋部と、を備える
ことを特徴とする防振構造。 - 前記周縁部が、前記装着部品に形成される被係止孔に挿通された後に折り曲げられて前記装着部品に係止される係止爪を有し、
前記係止爪が所定の箇所に接合されることにより、前記装着部品と一体化される
ことを特徴とする請求項1記載の防振構造。 - 前記係止爪は、前記装着部品に接合されることなく、当該防振構造を構成する所定の部分に接合され、
折り曲げられた前記係止爪の内側には、前記装着部品の一部を囲む包囲空間が形成される
ことを特徴とする請求項1又は2記載の防振構造。 - 前記架橋部と前記係止爪は、
前記挿通孔を中心に広がる放射線上において、前記スリットを挟まない限り、同じの放射線上に位置しない配置関係を有する
ことを特徴とする請求項1~3のいずれか一項に記載の防振構造。 - 前記連結部分に、前記装着部品の一部として設けられ、
前記周縁部が、前記連結部分の周縁に位置して、前記連結部分を除く前記装着部品の本体に連接する部分として形成される
ことを特徴とする請求項1記載の防振構造。 - 前記振動体当接部から前記周縁部へ至るまでの経路において、前記振動体当接部の前記振動体と当接する当接面に対して所定の角度の勾配を有する段差部を備える
ことを特徴とする請求項1~5のいずれか一項に記載の防振構造。 - 前記装着部品であるとともに前記振動体から発せられる所定の物理的エネルギーを遮る遮蔽体であって、
請求項1~6のいずれか一項に記載の防振構造を備える
ことを特徴とする遮蔽体。
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US14/895,105 US20160186833A1 (en) | 2013-06-04 | 2014-06-04 | Vibration isolation structure, and shield provided with vibration isolation structure |
EP14808178.9A EP3006773B1 (en) | 2013-06-04 | 2014-06-04 | Vibration isolation structure, and shield provided with vibration isolation structure |
JP2015521303A JP6424160B2 (ja) | 2013-06-04 | 2014-06-04 | 防振構造、及び防振構造を備える遮蔽体 |
KR1020157034930A KR20160018539A (ko) | 2013-06-04 | 2014-06-04 | 방진 구조, 및 방진 구조를 구비하는 차폐체 |
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US (1) | US20160186833A1 (ja) |
EP (1) | EP3006773B1 (ja) |
JP (1) | JP6424160B2 (ja) |
KR (1) | KR20160018539A (ja) |
WO (1) | WO2014196196A1 (ja) |
Cited By (3)
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JP2018523775A (ja) * | 2015-07-24 | 2018-08-23 | デーナ、オータモウティヴ、システィムズ、グループ、エルエルシー | インシュレーティングアイソレータアセンブリ |
JP2018154974A (ja) * | 2017-03-15 | 2018-10-04 | 住ベシート防水株式会社 | シート防水構造およびシート防水構造の施工方法 |
JP2021518898A (ja) * | 2018-04-11 | 2021-08-05 | レイセオン カンパニー | 共振周波数同調メタル・アイソレータ |
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WO2015105716A2 (en) | 2014-01-13 | 2015-07-16 | Meadwestvaco Corporation | Dispensing pump with skirt spring |
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- 2014-06-04 KR KR1020157034930A patent/KR20160018539A/ko not_active Application Discontinuation
- 2014-06-04 US US14/895,105 patent/US20160186833A1/en not_active Abandoned
- 2014-06-04 JP JP2015521303A patent/JP6424160B2/ja not_active Expired - Fee Related
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US20160186833A1 (en) | 2016-06-30 |
KR20160018539A (ko) | 2016-02-17 |
JP6424160B2 (ja) | 2018-11-14 |
EP3006773B1 (en) | 2019-02-27 |
EP3006773A4 (en) | 2017-02-22 |
EP3006773A1 (en) | 2016-04-13 |
JPWO2014196196A1 (ja) | 2017-02-23 |
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