WO2022091587A1 - 防振装置用ブラケット - Google Patents
防振装置用ブラケット Download PDFInfo
- Publication number
- WO2022091587A1 WO2022091587A1 PCT/JP2021/032904 JP2021032904W WO2022091587A1 WO 2022091587 A1 WO2022091587 A1 WO 2022091587A1 JP 2021032904 W JP2021032904 W JP 2021032904W WO 2022091587 A1 WO2022091587 A1 WO 2022091587A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reinforcing member
- bracket
- present
- surrounding
- outer peripheral
- Prior art date
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 245
- 229920003002 synthetic resin Polymers 0.000 claims description 30
- 239000000057 synthetic resin Substances 0.000 claims description 30
- 238000005192 partition Methods 0.000 claims description 20
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 10
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 10
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 104
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 239000002759 woven fabric Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
-
- 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
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3863—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the rigid sleeves or pin, e.g. of non-circular cross-section
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0241—Fibre-reinforced plastics [FRP]
Definitions
- the present invention relates to a bracket for an anti-vibration device.
- a reinforcing member made of fiber reinforced plastic is fixed to the outer periphery of the surrounding part of the bracket body made of synthetic resin for the purpose of achieving both weight reduction and durability improvement.
- a reinforcing member made of fiber reinforced plastic is fixed to the outer periphery of the surrounding part of the bracket body made of synthetic resin for the purpose of achieving both weight reduction and durability improvement.
- An object of the present invention is to provide a bracket for a vibration isolator with improved durability.
- the bracket for a vibration isolator includes a bracket main body formed of synthetic resin and a reinforcing member formed of fiber reinforced plastic, and the reinforcing member has a bracket whose inner surface is the inner surface of the reinforcing member.
- the inclined surface is formed by a curved surface protruding outward. In this case, the durability can be further improved.
- the cross-sectional contour shape of the curved surface is formed by one radius of curvature, and it is preferable that the radius of curvature is larger than the maximum thickness of the reinforcing member. In this case, the durability can be further improved.
- the section end face of the reinforcing member includes a section end face extending in the side direction, and at least a part of the section end face of the reinforcement member is , It is preferable that the end face extends in the lateral direction. In this case, the durability can be further improved.
- the compartment end face of the reinforcing member includes a longitudinally extending end face extending in the longitudinal direction, and at least a part of the compartment end face of the reinforcing member is said. It is preferably a longitudinally extending end face. In this case, the durability can be further improved.
- the inclined surface may be formed by a flat surface.
- FIG. 3 is a plan view showing a reinforcing member related to the anti-vibration device bracket of FIG. 1 in a state of being unfolded in a plane.
- 2A is a side view in the lateral direction showing the reinforcing member of FIG. 2A from the lateral direction of the reinforcing member. It is a side view of FIG. It is an enlarged view of the bracket for the vibration isolator which shows the region including the extending end face in the lateral direction of the reinforcing member roughly from the axial direction in the bracket for the vibration isolation device of FIG.
- bracket for the anti-vibration device which shows roughly the area including the extending end face in the lateral direction of the reinforcing member in the bracket for the anti-vibration device which concerns on other Embodiments of this invention from the axial direction. .. It is an enlarged view of the bracket for the anti-vibration device which shows the region including the extending end face in the lateral direction of the reinforcing member roughly from the axial direction in the bracket for the anti-vibration device which concerns on a comparative example of this invention.
- FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is an enlarged view of FIG. It is a plan view of FIG. It is a bottom view of FIG.
- FIG. 1 is a perspective view showing FIG. 1 from the left front plane side.
- FIG. 1 is a perspective view showing FIG. 1 from the left rear plane side.
- FIG. 1 is a perspective view showing FIG. 1 from the left front bottom surface side.
- FIG. 1 is a perspective view showing FIG. 1 from the left back bottom surface side.
- FIG. 1 is a front view of a vibration isolator bracket 1 (simply referred to as “bracket 1”) according to an embodiment of the present invention.
- FIG. 1 is a view of a so-called left-right direction view when the bracket 1 is mounted on the vehicle, when the bracket 1 is viewed from the left-right direction of the vehicle when the bracket 1 is mounted on the vehicle.
- FIG. 1 is a view when the bracket 1 is viewed from the left when the bracket 1 is mounted on the vehicle. That is, the left direction in FIG. 1 is the front direction when the vehicle is mounted, and the right direction in FIG. 1 is the rear direction when the vehicle is mounted.
- the upward direction in FIG. 1 is referred to as an upward direction when the vehicle is mounted, and the downward direction in FIG. 1 is referred to as a downward direction when the vehicle is mounted.
- the bracket 1 is an engine mount bracket for mounting the engine on the vehicle body.
- the bracket 1 can be connected to the vehicle body.
- the bracket 1 has a through hole 1A.
- the through hole 1A is a through hole formed in the bracket main body 2.
- the vibration isolator main body (not shown) can be accommodated in the through hole 1A.
- the vibration isolator main body can be connected to the engine. Thereby, the bracket 1 can connect the vehicle body and the engine via the vibration isolator main body.
- the vibration isolator main body is omitted.
- the vibration isolator main body include a vibration isolator in which an inner cylinder and an outer cylinder are connected by an elastic body (for example, rubber).
- an elastic body for example, rubber
- the outer cylinder is attached to the bracket 1, while the inner cylinder is attached to the engine.
- the bracket 1 can connect the bracket 1 to the engine while connecting the vibration isolator main body to the vehicle body. Further, the bracket 1 is not limited to the engine mount bracket. The bracket 1 connects the bracket main body 2 to one of the vibration generating side and the vibration receiving side other than the engine and the vehicle body, while connecting the vibration isolator main body to the other of the vibration generating side and the vibration receiving side. Can be done.
- Reference numeral O1 is the central axis of the bracket 1 (hereinafter, also simply referred to as “central axis O1”).
- the central axis O1 is coaxial with the central axis of the through hole 1A.
- the direction in which the central axis O1 extends is referred to as "axis direction”.
- the "axis direction” is synonymous with the "left-right direction when mounted on a vehicle”.
- the direction orthogonal to the central axis O1 is referred to as "axis direct direction”.
- the "axially oriented direction” includes the "front-back direction when the vehicle is mounted” and the "vertical direction when the vehicle is mounted”.
- the direction extending in an annular shape around the central axis O1 is referred to as "enclosed direction”.
- the bracket 1 includes a bracket main body 2 made of synthetic resin and a reinforcing member 3 made of fiber reinforced plastic.
- thermoplastic synthetic resin examples include polyamides (PA) such as 6-6 nylon, 6 nylon, and 9 nylon, polypropylene (PP), and the like.
- PA polyamides
- PP polypropylene
- the bracket main body 2 has a surrounding portion 20 that surrounds the vibration isolator main body.
- a through hole 1A is formed inside the surrounding portion 20.
- the surrounding portion 20 has a first surrounding portion 21 and a second surrounding portion 22.
- the through hole 1A is formed by the first surrounding portion 21 and the second surrounding portion 22.
- the second surrounding portion 22 is a fixed base portion that can be fixed to the vehicle body.
- the second surrounding portion 22 has an overhanging portion 22a that projects outward in the direction perpendicular to the axis of the first surrounding portion 21.
- the overhanging portion 22a projects in the front-rear direction when the vehicle is mounted, and outwards in the front-rear direction when the vehicle is mounted, than the first surrounding portion 21.
- the first surrounding portion 21 and the second surrounding portion 22 are integrally formed of the same synthetic resin. As described above, the vibration isolator main body can be accommodated in the through hole 1A. At this time, the first surrounding portion 21 surrounds the vibration isolator main body together with the second surrounding portion 22. As shown in FIG. 1, in the present embodiment, the first surrounding portion 21 is a bridging portion that is arched over the second surrounding portion 22 in the left-right direction view when the vehicle is mounted.
- reference numeral 20a is a reinforcing member arranging portion 20a of the surrounding portion 20.
- the reinforcing member arranging portion 20a of the surrounding portion 20 is a portion of the surrounding portion 20 in which the reinforcing member 3 is arranged.
- the reinforcing member arranging portion 20a of the surrounding portion 20 connects the outer peripheral portion 211 extending in the surrounding direction, the inner peripheral portion 212 extending in the surrounding direction, and the outer peripheral portion 211 and the inner peripheral portion 212. It is formed by a connecting portion 213 that extends in the surrounding direction as well as.
- the surrounding direction means the direction in which the surrounding portion 20 extends around the central axis O1.
- the outer peripheral portion 211, the inner peripheral portion 212, and the connecting portion 213 are integrally formed of the same synthetic resin.
- the inner surface 32 of the reinforcing member 30 is embedded in the bracket main body 2.
- the bracket 1 is an injection-molded product having the reinforcing member 3 as an insert product.
- the reinforcing member 3 is arranged in the cavity of the molding mold, and the bracket main body 2 is formed by injecting the synthetic resin into the cavity.
- the reinforcing member 3 is fixed in a state of being embedded in the bracket main body 2.
- the reinforcing member 3 is fixed in a state where the inner surface 32 of the reinforcing member 3 is embedded in the outer surface side of the surrounding portion 20.
- the inner surface 32 of the reinforcing member 3 is embedded in the bracket main body 2, while the outer surface 33 of the reinforcing member 3 is exposed from the bracket main body 2.
- FIG. 2A is a plan view of the reinforcing member 3.
- the reinforcing member 30 is shown in a state of being unfolded in a plane.
- the reinforcing member 3 is shown so that the inner surface 32 of the reinforcing member 3 can be visually recognized.
- the reinforcing member 3 has a partition end surface 31 for partitioning the reinforcing member 3 in a plane shape.
- "dividing the reinforcing member 3 into a plane” means making the contour shape of the reinforcing member 3 polygonal in a plan view of the reinforcing member 3.
- each of the four corner portions (vertices of the polygonal shape) of the reinforcing member 3 has an angular shape (a shape in which two straight lines intersect at one point) in a plan view. However, it may be formed in a rounded shape (curved shape).
- the partition end surface 31 of the reinforcing member 3 partitions the reinforcing member 3 in a rectangular shape (planar shape) in a plan view.
- the section end surface 31 of the reinforcing member 3 includes a lateral extending end surface 31a extending in the lateral direction and a longitudinal extending end surface 31b extending in the longitudinal direction.
- the partition end surface 31 of the reinforcing member 3 includes two lateral extending end surfaces 31a. As shown in FIG. 2A, the two extending end faces 31a in the lateral direction extend in the lateral direction in parallel with each other in a plan view.
- the partition end surface 31 of the reinforcing member 3 includes two longitudinal extending end surfaces 31b. As shown in FIG. 2A, the two longitudinal extending end faces 31b extend in parallel to each other in the longitudinal direction in a plan view. As a result, in the present embodiment, the partition end surface 31 of the reinforcing member 3 partitions the reinforcing member 3 in a rectangular shape in a plan view.
- FIG. 2B shows the reinforcing member 3 from the lateral direction.
- the longitudinal extending end surface 31b of the reinforcing member 3 is shown to be frontal.
- At least a part of the section end surface 31 of the reinforcing member 3 is an inclined surface 32a formed by the inner surface 32 of the reinforcing member 3 which is inclined toward the outer surface 33 of the reinforcing member 3.
- the inclined surface 32a is inclined toward the outer surface side edge 3e1 of the reinforcing member 3 toward the outer surface 33 of the reinforcing member 31.
- the “outer surface side edge 3e1 of the reinforcing member 3” means the edge of the outer surface 33 of the reinforcing member 3.
- the “inner surface side edge 3e2 of the reinforcing member 3” to be described later means the end edge of the inner surface 32 of the reinforcing member 3.
- the inner surface 32 of the reinforcing member 3 includes an inclined surface 32a.
- the inclined surface 32a extends toward the outer surface 33 toward the longitudinal direction side of the reinforcing member 31. Further, in the present embodiment, the inclined surface 32a is inclined toward the outer surface side edge 3e1 of the reinforcing member 3 toward the outer surface 33 of the reinforcing member 31.
- the reinforcing member 3 is a sheet member having a thickness t.
- the thickness t is the thickness between the inner surface 32 of the reinforcing member 3 and the outer surface 33 of the reinforcing member 3.
- the inclined surface 32a is formed so that the thickness t of the reinforcing member 3 decreases toward the outer surface side edge 3e1 of the reinforcing member 3.
- the inclined surface 32a forms the inner surface 32 of the reinforcing member 3 together with the flat surface 32b parallel to the outer surface 33 of the reinforcing member 3.
- the inner surface 32 of the reinforcing member 3 is formed by the inclined surface 32a and the flat surface 32b.
- the inclined surface 32a of the inner surface 32 is a lateral view of the reinforcing member 3 (width direction view of the reinforcing member 3), and the extending end surface 31a of the reinforcing member 3 in the lateral direction.
- the outer surface side edge 3e1 of the reinforcing member 3 is the outer surface side edge of the extending end surface 31a in the lateral direction of the reinforcing member 3.
- the inclined surface 32a of the inner surface 32 is formed by a curved surface protruding outward.
- the cross-sectional contour shape of the curved surface is formed by one radius of curvature R.
- the radius of curvature R is larger than the maximum thickness tmax of the reinforcing member 3.
- the maximum thickness tmax is the thickness between the flat surface 32b on the inner surface 32 of the reinforcing member 3 and the outer surface 33 of the reinforcing member 3.
- the longitudinal extending end surface 31b of the reinforcing member 3 extends in the surrounding direction of the surrounding portion 20. That is, in the bracket 1, the longitudinal extending end surface 31b of the reinforcing member 3 is the surrounding extending end surface extending in the surrounding direction of the surrounding portion 20. Further, referring to FIG. 3, in the bracket 1, the lateral extending end surface 31a of the reinforcing member 3 extends in the axial direction of the surrounding portion 20. That is, in the bracket 1, the lateral extending end surface 31a of the reinforcing member 3 is an axial extending end surface extending in the axial direction of the surrounding portion 20.
- the reinforcing member 3 is embedded in the bracket main body 2.
- a boundary may be formed between the circumferential end surface 31 of the reinforcing member 3 and the surrounding portion 20 as shown in FIG.
- the reinforcing member 3 is embedded so as to form a boundary between the lateral extending end surface 31a of the reinforcing member 3 and the surrounding portion 20 of the bracket main body 2.
- the vibration isolator main body is connected to the surrounding portion 20 of the bracket main body 2. Therefore, for example, as shown by the white arrow in FIG. 1, a load (external force) is applied to the surrounding portion 20 of the bracket main body 2 from the central axis O1 toward the outside in the axial direction.
- the bracket 1 is an engine mount bracket as described above. Therefore, in the present embodiment, the load is applied to the surrounding portion 20 of the bracket main body 2 mainly from the three axial directions of the front-rear direction when the vehicle is mounted, the left-right direction when the vehicle is mounted, and the vertical direction when the vehicle is mounted.
- the load applied to the surrounding portion 20 of the bracket main body 2 is transmitted to the reinforcing member 3 through the surrounding portion 20. That is, the inner surface 32 of the reinforcing member 3 is a surface that directly receives the load from the bracket main body 2.
- the partition end surface 31 of the reinforcing member 3 is formed by the outer surface 33 of the reinforcing member 31 that is inclined toward the inner surface 32 of the reinforcing member 3 in the lateral view of the reinforcing member 3. be able to.
- the inner surface side edge 3e2 of the section end surface 31 of the reinforcing member 3 has an acute angle, as shown in FIG. 4D, the surface area of the inner surface 32 of the reinforcing member 3 is large, while the surface area of the outer surface 33 of the reinforcing member 3 is large.
- the partition end surface 31 of the reinforcing member 3 when the partition end surface 31 of the reinforcing member 3 is a vertical surface in the width direction of the reinforcing member 3, the partition end surface 31 of the reinforcing member receives a load input on the outer side in the axial direction.
- the shape is parallel.
- the surface area of the inner surface 32 of the reinforcing member 3 and the surface area of the outer surface 33 of the reinforcing member 3 are the same.
- the bracket 1 in the bracket 1 according to the present embodiment, at least a part of the section end surface 31 of the reinforcing member 3 is on the outer surface 33 of the reinforcing member 3 in the width direction of the reinforcing member 3. It is an inclined surface 32a formed by the inner surface 32 of the reinforcing member 3 which is inclined toward.
- the load when a load is applied to the inner surface 32 of the reinforcing member 3 on the outer side in the axial direction, the load can be released along the inclined surface 32a.
- the stress concentration that may occur on the partition end surface 31 of the reinforcing member 3 is suppressed. Therefore, according to the bracket 1 according to the present embodiment, it is possible to improve the durability.
- the section end surface 31 of the reinforcing member 3 includes the extension end surface 31a in the lateral direction extending in the lateral direction.
- the inclined surface 32a is the extending end surface 31a in the lateral direction.
- the lateral extending end surface 31a of the reinforcing member 3 is an axial extending end surface. That is, in the present embodiment, the lateral extending end surface 31a of the reinforcing member 3 receives the load on the outer side in the axial direction so as to be orthogonal to the input direction (outer side in the axial direction) of the load.
- the lateral extending end surface 31a of the reinforcing member 3 is the longitudinal end surface of the reinforcing member 3 wound around the outer surface side of the surrounding portion 20 of the bracket main body 2.
- the extending end surface 31a in the lateral direction of the reinforcing member 3 tends to cause stress concentration when a load is applied to the outside in the axial direction in combination with the restoring force for the winding of the reinforcing member 3. Therefore, according to the present embodiment, the durability can be further improved.
- the inclined surface 32a of the inner surface 32 is formed by a curved surface protruding outward.
- the load applied to the inclined surface 32a can be released more efficiently along the inclined surface 32a. Therefore, according to the present embodiment, the durability can be further improved.
- the cross-sectional contour shape of the curved surface is formed by one radius of curvature R in the lateral (longitudinal) view of the reinforcing member 3, and the radius of curvature is the same.
- R is larger than the maximum thickness tmax of the reinforcing member 3.
- the inclined surface 32a of the inner surface 32 is gently inclined toward the outer surface side edge 3e1 of the inclined surface 32a while forming a curved surface. Therefore, according to the present embodiment, the durability can be further improved.
- the inclined surface 32a of the inner surface 32 can be formed by a flat surface.
- the cross-sectional contour shape of the inclined surface 32a is formed by a straight line in the lateral direction (longitudinal direction) view of the reinforcing member 3.
- the inner surface side edge 3e2 of the compartment end surface 31 of the reinforcing member 3 has an obtuse angle between the compartment end surface 31 and the inner surface 32 of the reinforcing member 3.
- the stress concentration can be reduced as compared with the case where the partition end surface 31 of the reinforcing member 3 is a vertical surface in the width direction view of the reinforcing member 3.
- the partition end surface 31 of the reinforcing member 3 includes a longitudinal extending end surface 31b extending in the longitudinal direction.
- the inclined surface 32a is the longitudinal extending end surface of the reinforcing member 3. It is preferably 31b.
- the longitudinal extending end surface 31a of the reinforcing member 3 is embedded in the bracket main body 2, if the longitudinal extending end surface 31b of the reinforcing member 3 is an inclined surface 32a, the force applied to the outside in the axial direction causes the force applied to the outside in the axial direction. It is possible to suppress the stress concentration generated on the longitudinal extension end surface 31b of the reinforcing member 3. Therefore, in this case, the durability can be further improved.
- FIG. 5 is a sectional view taken along the line AA of FIG.
- FIG. 5 shows the reinforcing member arranging portion 20a in a cross section orthogonal to the surrounding direction.
- the cross section is an axial cross section formed by a plane including the central axis O1.
- FIG. 6 is an enlarged view of FIG.
- the cross-sectional shape of the reinforcing member arranging portion 20a is such that the cross-sectional width W3 of the connecting portion 213 is the outer peripheral portion 211. It has an I-shape narrower than the cross-sectional width W1 of the above and the cross-sectional width W2 of the inner peripheral portion 212.
- the cross-sectional width W2 of the inner peripheral portion 212 is narrower than the cross-sectional width W1 of the outer peripheral portion 211.
- the “cross-sectional width” is the target portion (outer peripheral portion 211, inner peripheral portion 212, and connecting portion 213) extending along the axial direction in the axial cross-sectional view of FIG. ) Axial width.
- the outer peripheral portion 211 has a flat rectangular cross section along the axial direction in an axial cross section.
- the cross-sectional width W1 of the outer peripheral portion 211 is the width between the axial ends e1 of the outer peripheral portion 211.
- the inner peripheral portion 212 has a flat rectangular cross section along the axial direction in the axial cross section.
- the cross-sectional width W2 of the inner peripheral portion 212 is the width between the axial ends e2 of the inner peripheral portion 212.
- the connecting portion 213 has a flat rectangular cross section along the axial direction in the axial cross section.
- the cross-sectional width W3 of the connecting portion 213 is the width between the axially closest portions e3 of the connecting portion 213 in the axial direction.
- the side surface f3 of the connecting portion 213 is continuous with the inner peripheral side surface f1 of the outer peripheral portion 211, and is a curved surface formed by an inwardly concave curve when viewed in the cross section. It includes f3a and a curved surface f3b formed by a curved line that is concave inward when viewed in the cross section, and is connected to the outer peripheral side surface f2 of the inner peripheral portion 212.
- the inner peripheral side surface f1 of the outer peripheral portion 211 is a plane formed by a straight line in an axial cross-sectional view.
- the inner peripheral side surface f1 of the outer peripheral portion 211 is connected to the axial end e1 of the outer peripheral portion 211 at an acute angle side angle ⁇ with respect to the axial direction.
- the outer peripheral side surface f2 of the inner peripheral portion 212 is a plane formed by a straight line in an axial cross-sectional view.
- the outer peripheral side surface f2 of the inner peripheral portion 212 is connected to the axial end e2 of the inner peripheral portion 212 at an acute angle side angle ⁇ with respect to the axial direction.
- the curved surface f3a of the connecting portion 213 is a curve formed by a curve having a radius of curvature r1 and recessed inward in the axial direction in the axial cross-sectional view.
- the curved surface f3b of the connecting portion 213 is a curve formed by a curve having a radius of curvature r2 and recessed inward in the axial direction in an axial cross-sectional view.
- the radius of curvature r1 and the radius of curvature r2 can be the same radius of curvature.
- the radius of curvature r1 and the radius of curvature r2 can be different radii of curvature.
- the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213 are surrounded by the reinforcing member arranging portion 20a of the surrounding portion 20.
- a recess 23 extending in the direction is formed.
- the recess 23 has two surrounding end surfaces 214.
- the surrounding-direction end surface 214 is a surface that forms the surrounding-direction end of the recess 23.
- the end surface 214 in the surrounding direction defines the range in which the recess 23 extends in the surrounding direction.
- the end surface 214 in the surrounding direction is connected to the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213. That is, in the present embodiment, the recess 23 is formed by an outer peripheral portion 211, an inner peripheral portion 212, a connecting portion 213, and an end surface 214 in the surrounding direction. Further, in the present embodiment, the surrounding end surface 214 is connected to the through hole 1A. As a result, in the present embodiment, the recess 23 is opened to the through hole 1A at the end in the surrounding direction.
- the cross-sectional width W2 of the inner peripheral portion 212 becomes wider toward the second surrounding portion 22.
- the cross-sectional width W2 takes the maximum width of the cross-sectional width W2 when approaching a certain distance with respect to the second surrounding portion 22. Then, the cross-sectional width W2 becomes narrower from the maximum width of the cross-sectional width W2 toward the second surrounding portion 22.
- the axial end e2 of the inner peripheral portion 212 is formed by a curve having a radius of curvature r22 near the second surrounding portion 22.
- the reinforcing member arranging portion 20a of the surrounding portion 20 is reinforced by arranging the reinforcing member 3.
- the reinforcing member 3 is made of fiber reinforced plastic (FRP).
- (Continuous) fiber reinforced plastic is a composite material with improved strength by impregnating a fibrous element with a synthetic resin.
- the fiber reinforced plastic include prepreg.
- the fibrous element include glass fiber woven fabric, carbon fiber woven fabric, metal fiber woven fabric, organic fiber, fiber woven fabric having higher bending strength than the bracket body 2, and other materials including these woven fabrics.
- a glass fiber woven fabric is used as the fibrous element.
- the fiber-reinforced plastic include a UD (Uni Direction) material in which the fibrous element having directionality contains a synthetic resin, and a woven material in which the woven fibrous element contains a synthetic resin. ..
- the bracket 1 can be integrally formed by injection molding, for example, with the reinforcing member 3 as an insert product. In the bracket 1 according to the present embodiment, for example, the fibrous elements are arranged in a direction oriented in the surrounding direction.
- the reinforcing member 3 extends in the surrounding direction of the surrounding portion 20 and is arranged in the surrounding portion 20.
- the reinforcing member 3 is arranged in the first surrounding portion 21.
- the reinforcing member 3 is a band-shaped reinforcing member.
- the cross-sectional width of the reinforcing member 3 is equal to the cross-sectional width W1 of the outer peripheral portion 211.
- the longitudinal extending end surface 31b of the reinforcing member 3 coincides with the axial end e1 of the outer peripheral portion 211.
- two fixing holes 22h are formed in the second surrounding portion 22. As shown in FIG. 7, the two fixing holes 22h are arranged at intervals in the axial direction with the first surrounding portion 21 interposed therebetween in a plan view.
- the fixing hole 22h is arranged in the recess 2c provided in the bracket main body 2.
- the recess 2c has a shape in which a part of the first surrounding portion 21 is cut out.
- the reinforcing member arranging portion 20a sandwiches the central axis O1 in the front direction portion when the vehicle is mounted and the rear direction when the vehicle is mounted.
- the parts are arranged so that they are evenly reinforced.
- the portion to be reinforced by the reinforcing member 3 can be different in the front-rear direction when mounted on the vehicle.
- the reinforcing member 3 is arranged on the outer peripheral portion 211 of the reinforcing member arranging portion 20a.
- the reinforcing member 3 covers the outer peripheral surface of the outer peripheral portion 211 of the reinforcing member arranging portion 20a in the reinforcing member arranging portion 20a of the surrounding portion 20 of the bracket main body 2. are doing. As a result, in the present embodiment, the reinforcing member 3 forms the outer peripheral surface of the bracket 1 in the reinforcing member arranging portion 20a of the bracket main body 2.
- the anti-vibration device bracket accommodates the anti-vibration device main body in the through hole 1A formed by the surrounding portion 20. Therefore, stress tends to be concentrated on the surrounding portion 20.
- the conventional anti-vibration device bracket has a rectangular cross-sectional shape when viewed in a cross section orthogonal to the surrounding direction. Therefore, from another point of view, the conventional bracket for anti-vibration device should not be accompanied by an increase in weight while further improving the durability while further reducing the weight and ensuring the durability. There was room for improvement.
- the reinforcing member arranging portion 20a of the surrounding portion 20 is arranged in the surrounding direction with the outer peripheral portion 211 extending in the surrounding direction.
- the extending inner peripheral portion 212 is connected to the outer peripheral portion 211 and the inner peripheral portion 212, and is formed by a connecting portion 213 extending in the surrounding direction.
- the bracket main body 2 has a cross-sectional shape of the reinforcing member arranging portion 20a when the reinforcing member arranging portion 20a is viewed in a cross section orthogonal to the surrounding direction.
- the cross-sectional width W3 is I-shaped, which is narrower than the cross-sectional width W1 of the outer peripheral portion 211 and the cross-sectional width W2 of the inner peripheral portion 212.
- the bracket 1 has the cross-sectional shape of the reinforcing member arranging portion 20a of the surrounding portion 20 of the bracket main body 2 in the shape of a rail as a track of a train or the like.
- the cross-sectional shape of the reinforcing member arranging portion 20a is I-shaped, so that it is possible to secure durability while further reducing the weight. From another point of view, according to the bracket 1, it is possible to further improve the durability without increasing the weight.
- the cross-sectional width W2 of the inner peripheral portion 212 is narrower than the cross-sectional width W1 of the outer peripheral portion 211. In this case, the weight can be further reduced by the amount that the cross-sectional width W2 of the inner peripheral portion 212 is narrowed.
- the side surface f3 of the connecting portion 213 includes a curved surface f3a formed by an inwardly concave curve and a curved surface f3b formed by an inwardly concave curve.
- the durability can be improved by reducing the stress concentration generated in the bracket main body 2 at the time of load input.
- the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213 are in the surrounding direction in the reinforcing member arranging portion 20a of the surrounding portion 20.
- a recess 23 extending into the shape is formed. In this case, the manufacturing quality can be easily ensured.
- the surrounding portion 20 is provided with a built-up portion such as a rib for reinforcement, the surrounding portion 20 can be reinforced.
- the resin flows are likely to be separated from each other, such as merging and separating of the resin flows during injection molding. Therefore, in this case, it is necessary to control the weld line that may occur in the product or to make it inconspicuous, and it is difficult to ensure the manufacturing quality.
- the recess 23 is formed by the inner peripheral side surface f1 of the outer peripheral portion 211, the outer peripheral side surface f2 of the inner peripheral portion 212, and the side surface f3 of the connecting portion 213.
- the area on the inner peripheral portion 212 side that receives the load from the vibration isolator main body is secured, the area on the outer peripheral portion 211 side where stress is generated is increased, and the cross-sectional area of the connecting portion 213 is reduced. Can be done.
- the resin flow becomes uniform during injection molding of the bracket 1, and the reinforcing member 3 can be easily applied. Therefore, according to the bracket 1, the manufacturing quality can be easily ensured.
- the bracket 1 may have an injection-molded gate mark G on the inner peripheral side surface f1 of the outer peripheral portion 211.
- the reinforcing member 3 is firmly fixed to the bracket body 2 without spoiling the aesthetic appearance.
- Examples of the molding method of the bracket 1 include so-called hybrid molding in which the reinforcing member 3 is used as an insert product and injection molding is performed together with the bracket body 2.
- the synthetic resin supplied into the mold may unintentionally wrap around to the outer peripheral surface side of the reinforcing member 3. Such wraparound of the synthetic resin may spoil the aesthetic appearance on the outer peripheral surface of the reinforcing member 3 at the time of product completion.
- the gate for injection molding it is conceivable to arrange the gate for injection molding at a position far from the reinforcing member 3 in the mold.
- the pressure for bringing the synthetic resin into close contact with the reinforcing member 3 may be insufficient.
- the gate mark G is formed on the inner peripheral side surface f1 of the outer peripheral portion 211 in the bracket main body 2.
- the synthetic resin is supplied from the inner peripheral surface of the reinforcing member 3 in the mold.
- the gate mark G is formed in the region including the axial angle portion 2e of the outer peripheral portion 211.
- the axial angle portion 2e of the outer peripheral portion 211 is a portion where the axial end e1 of the outer peripheral portion 211 and the inner peripheral side surface f1 are connected to each other.
- the synthetic resin is supplied in the mold from the inner peripheral surface side of the reinforcing member 3 in the vicinity of the axial end 3e3 of the reinforcing member 3.
- the synthetic resin is supplied so as to hold the axial end 3e3 of the reinforcing member 3 against the mold, it is possible to effectively suppress the resin from wrapping around the outer peripheral surface of the reinforcing member 3.
- the gate mark G is the boundary between the bracket body 2 and the reinforcing member 3 from the axial corner portion 2e of the outer peripheral portion 211 along the axial end e1 (the outer peripheral portion 211 (bracket body 2). It extends to the outer peripheral surface 2f).
- the synthetic resin in the mold has a constant input angle (excluding 90 degrees, an angle of 0 degrees) with respect to the inner peripheral surface of the reinforcing member 3 at the position closest to the axial end 3e3 of the reinforcing member 3. It is supplied so as to hold the axial end 3e3 of the reinforcing member 3 against the mold with an acute angle exceeding the mold.
- the synthetic resin is ejected from the inner peripheral side of the outer peripheral portion 211 closest to the reinforcing member 3, so that the resin wraparound to the outer peripheral surface of the reinforcing member 3 can be further suppressed.
- the gate marks G are formed on both sides in the axial direction.
- the gate mark G may be formed on at least one of the axial direction and the axial direction.
- the gate marks G are formed on both sides in the left-right direction when mounted on the vehicle.
- one gate mark G is formed on one side in the axial direction and one on the other side in the axial direction.
- the number of gate marks G can be at least one on at least one of the axial direction and the axial direction.
- one gate mark G is formed on both sides in the left-right direction when the vehicle is mounted, and one in the rear direction when the vehicle is mounted.
- FIG. 13 is a perspective view showing the cross section AA of FIG. 1 from the right front plane side. According to FIG. 13, the cross section AA of FIG. 2 has no gate mark G as shown in FIG. 13 when viewed from the upper side in the rear direction when the vehicle is mounted.
- the form (shape) of the surrounding portion 20 is not limited to the form (shape) of the above-described embodiment.
- the portion of the reinforcing member 3 to be embedded in the bracket main body 2 is not limited to the surrounding portion 20 formed so as to surround the through hole 1A.
- the reinforcing member 3 can be embedded in a portion where the two ends are not connected, such as a U-shape or an I-shape, without surrounding the through hole.
- the surrounding portion 20 has an elliptical shape in the axial direction, but can have various shapes such as a perfect circle shape and a rectangular shape.
- the outer peripheral surface of the reinforcing member 3 is aligned with the outer surface of the surrounding portion 20 of the bracket main body 2, but is projected outward from the outer surface of the surrounding portion 20. Therefore, a step can be provided between the surrounding portion 20 and the outer surface of the surrounding portion 20.
- the reinforcing member 3 is embedded in the surrounding portion 20 of the bracket main body 2 as the outer peripheral surface of the bracket 1 so that it can be visually recognized from the outside, but the surrounding portion 20 is not visible from the outside. Can be completely buried.
- the mounting surface of the second surrounding portion 22 is formed by a flat surface.
- the mounting surface of the second surrounding portion 22 can be formed by a surface having a shape corresponding to the shape of the mounting side of the vehicle body or the like.
- 1 Bracket for anti-vibration device, 1A: Through hole, 2: Bracket body, 20: Surrounding part, 20a: Reinforcing member placement part, 21: First surrounding part, 211: Outer peripheral part, 212: Inner peripheral part, 213: Connecting part, 22: Second surrounding part, 23: Recessed part, 3: Reinforcing member, 31: Reinforcing member's section end surface, 31a: Reinforcing member's lateral extending end surface (reinforcing member's axial extending end surface), 31b : Longitudinal extending end surface of the reinforcing member (extending end surface in the surrounding direction of the reinforcing member), 32: Inner surface of the reinforcing member, 32a: Inclined surface of the inner surface of the reinforcing member (partition end surface of the reinforcing member), 32b: Inner surface of the reinforcing member Flat surface, 33: outer surface of the reinforcing member, 3e1: outer surface side edge of the rein
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vibration Prevention Devices (AREA)
- Springs (AREA)
Abstract
Description
Claims (6)
- 合成樹脂によって形成されたブラケット本体と、繊維強化プラスチックによって形成された補強部材と、を備えており、前記補強部材は、当該補強部材の内面が前記ブラケット本体に埋設されている、防振装置用ブラケットであって、
前記補強部材は、当該補強部材を面状に区画する区画端面を有しており、
前記補強部材の前記区画端面の少なくとも一部は、前記補強部材の外面に向かって傾斜している当該補強部材の内面によって形作られている傾斜面である、防振装置用ブラケット。 - 前記傾斜面は、外向きに突出している曲面によって形作られている、請求項1に記載された防振装置用ブラケット。
- 前記曲面の断面輪郭形状は、1つの曲率半径によって形作られており、前記曲率半径は、前記補強部材の最大厚さよりも大きい、請求項2に記載された防振装置用ブラケット。
- 前記補強部材の区画端面は、短手方向に延びている短手方向延在端面を含んでおり、前記補強部材の前記区画端面の前記少なくとも一部は、前記短手方向延在端面である、請求項1~3のいずれか1項に記載された防振装置用ブラケット。
- 前記補強部材の区画端面は、長手方向に延びている長手方向延在端面を含んでおり、前記補強部材の前記区画端面の前記少なくとも一部は、前記長手方向延在端面である、請求項1~4のいずれか1項に記載された防振装置用ブラケット。
- 前記傾斜面は、平面によって形作られている、請求項1、4又は5のいずれか1項に記載された防振装置用ブラケット。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP21885706.8A EP4239212A1 (en) | 2020-10-28 | 2021-09-07 | Bracket for anti-vibration device |
CN202180073202.7A CN116507826A (zh) | 2020-10-28 | 2021-09-07 | 隔振装置用支架 |
US18/249,738 US20240011537A1 (en) | 2020-10-28 | 2021-09-07 | Bracket for anti-vibration device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2020-180881 | 2020-10-28 | ||
JP2020180881A JP7444758B2 (ja) | 2020-10-28 | 2020-10-28 | 防振装置用ブラケット |
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WO2022091587A1 true WO2022091587A1 (ja) | 2022-05-05 |
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PCT/JP2021/032904 WO2022091587A1 (ja) | 2020-10-28 | 2021-09-07 | 防振装置用ブラケット |
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US (1) | US20240011537A1 (ja) |
EP (1) | EP4239212A1 (ja) |
JP (1) | JP7444758B2 (ja) |
CN (1) | CN116507826A (ja) |
WO (1) | WO2022091587A1 (ja) |
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JP7444765B2 (ja) * | 2020-06-22 | 2024-03-06 | 株式会社プロスパイラ | 防振装置用ブラケット |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09170635A (ja) * | 1995-12-19 | 1997-06-30 | Tokai Rubber Ind Ltd | 筒型マウント装置およびその製造方法 |
JPH09257075A (ja) * | 1996-03-25 | 1997-09-30 | Daihatsu Motor Co Ltd | 合成樹脂製の防振マウント用ブラケット |
JP2019078380A (ja) * | 2017-10-26 | 2019-05-23 | 株式会社ブリヂストン | 防振装置用ブラケット及び防振装置用ブラケットの製造方法 |
WO2020129514A1 (ja) * | 2018-12-20 | 2020-06-25 | 株式会社ブリヂストン | ブラケット |
-
2020
- 2020-10-28 JP JP2020180881A patent/JP7444758B2/ja active Active
-
2021
- 2021-09-07 US US18/249,738 patent/US20240011537A1/en active Pending
- 2021-09-07 CN CN202180073202.7A patent/CN116507826A/zh active Pending
- 2021-09-07 WO PCT/JP2021/032904 patent/WO2022091587A1/ja active Application Filing
- 2021-09-07 EP EP21885706.8A patent/EP4239212A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09170635A (ja) * | 1995-12-19 | 1997-06-30 | Tokai Rubber Ind Ltd | 筒型マウント装置およびその製造方法 |
JPH09257075A (ja) * | 1996-03-25 | 1997-09-30 | Daihatsu Motor Co Ltd | 合成樹脂製の防振マウント用ブラケット |
JP2019078380A (ja) * | 2017-10-26 | 2019-05-23 | 株式会社ブリヂストン | 防振装置用ブラケット及び防振装置用ブラケットの製造方法 |
WO2020129514A1 (ja) * | 2018-12-20 | 2020-06-25 | 株式会社ブリヂストン | ブラケット |
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JP2022071755A (ja) | 2022-05-16 |
JP7444758B2 (ja) | 2024-03-06 |
US20240011537A1 (en) | 2024-01-11 |
EP4239212A1 (en) | 2023-09-06 |
CN116507826A (zh) | 2023-07-28 |
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