JP5512403B2 - Vibration isolator and vibration isolator bracket - Google Patents

Description

  The present invention is used as a general industrial machine, an engine mount of an automobile, etc., and a vibration isolator that absorbs vibration from a vibration generating part of an engine or the like and suppresses vibration transmission to a vibration receiving part such as a vehicle body, and the like The present invention relates to a vibration isolator bracket used for a vibration isolator.

  For example, an anti-vibration device as an engine mount is disposed between an engine that is a vibration generation unit of a vehicle and a vehicle body that is a vibration receiving unit, and the anti-vibration device absorbs vibration generated by the engine, Suppresses vibration transmission to the vehicle body. As such an anti-vibration device, for example, an elastic body and a pair of liquid chambers are provided inside the anti-vibration device, and a liquid-filled type in which these liquid chambers communicate with each other through a restriction passage serving as an orifice is known. ing. According to the liquid-filled vibration isolator, when vibration is generated due to operation of the mounted engine, the vibration damping function of the elastic body and the viscous resistance of the liquid in the orifice communicating between the pair of liquid chambers The vibration is absorbed by, for example, and vibration transmission to the vehicle body side is suppressed (see, for example, Patent Document 1).

  Incidentally, the vibration isolator described in Patent Document 1 discloses a lower mounting bracket 1 that holds a vibration isolating base 3. The lower mounting member 1 is formed by integrally drawing a metal material such as a steel plate to form a holding cylinder 11 that holds the vibration isolating base 3, a support portion 12 that is connected to the vehicle body side, and a caulking fixing portion 14. ing. However, when drawing is performed in this way, the manufacturing cost becomes high.

  Patent Document 2 discloses a configuration in which a leg member and a holding member are separately configured by bending a plate material and supporting the vibration isolator main body, instead of drawing. However, the leg member and the holding member are separate members, which increases the number of parts.

JP 2001-280404 A JP 2010-65749 A

  An object of the present invention is made in consideration of the above facts, and includes a bracket for a vibration isolator capable of suppressing an increase in manufacturing cost and the number of parts, and a bracket for the vibration isolator. It is to provide an anti-vibration device.

  In order to achieve the above object, an anti-vibration device bracket according to claim 1 of the present invention includes an outer mounting member connected to one of a vibration generating portion and a vibration receiving portion, and the other of the vibration generating portion and the vibration receiving portion. An anti-vibration device that supports the anti-vibration device main body having an inner attachment member to be connected and an elastic body that is disposed between the inner attachment member and the outer attachment member and connects the inner attachment member and the outer attachment member. A bracket for the device, which is plate-shaped, and is provided in a pair on both sides with the outer mounting member of the vibration isolator body interposed therebetween, and is fixed to one of the vibration generating portion and the vibration receiving portion, and the mounting A wing portion that is integrally continuous with the plate portion and disposed so that a direction along the plate surface intersects the outer surface of the outer mounting member; and a leg portion that is integrally continuous with the wing portion and the outer mounting portion. The vibration isolator main body disposed along the side surface of the member A holding side surface, and a side surface holding portion that is integrated with the side surface holding portion and protrudes from the side surface holding portion in the main vibration input direction, thereby preventing relative movement of the outer mounting member and the side surface holding portion in the main vibration input direction. And a blocking unit.

  In the vibration isolator bracket configured as described above, the wing portion that is integrally continuous with the mounting plate portion fixed to one of the vibration generating portion and the vibration receiving portion is disposed so that the plate surface intersects the outer surface of the outer mounting member. Has been. Therefore, as in the case where the plate surface is disposed along the outer mounting member of the vibration isolator main body, the outer mounting member or the plate surface of the leg portion is not processed into a shape along the outer periphery of the outer mounting member. The leg portion can be fixed to the member to which the outer mounting member is fixed by butting or the like.

  Also, the outer mounting member is held by the side surface holding portion that is integrally continuous with the wing portion of the leg portion, and the main vibration input between the outer mounting member and the side surface holding portion is performed by the blocking portion that is continuously continuous with the side surface holding portion. By preventing relative movement in the direction, it is not necessary to hold the vibration isolator main body with a separate member, and the number of parts can be reduced.

The vibration isolator bracket according to claim 2 of the present invention is characterized in that the leg portion, the side surface holding portion, and the blocking portion are formed of a single plate material.

  The leg portion, the side surface holding portion, and the blocking portion can be integrally formed by welding or the like. In this way, the number of parts at the time of manufacturing is reduced by forming the leg portion, the side surface holding portion, and the blocking portion. can do.

  A vibration isolator bracket according to a third aspect of the present invention is fixed to the leg portion, disposed at a position facing the blocking portion with the side surface holding portion interposed therebetween, and the outer mounting portion between the blocking portion and the blocking portion. A clamping part is provided for clamping the member.

  Thus, by providing the clamping part, it is possible to prevent relative movement in the main vibration input direction between the outer mounting member and the side surface holding part by sandwiching the outer mounting member between the blocking part and the clamping part. .

  The bracket for vibration isolator according to claim 4 of the present invention is characterized in that the clamping portion is constituted by a stopper member in the main vibration input direction of the vibration isolator main body.

  In this way, the stopper member can also be configured to serve as the clamping portion.

The bracket for vibration isolator according to claim 6 of the present invention is characterized in that the side surface holding portion has a plate surface arranged along the outer peripheral surface of the outer mounting member.

  Thus, by arranging the plate surface of the side surface holding portion along the outer peripheral surface of the outer mounting member, the side surface holding portion can be easily integrated with the leg portion by bending the plate material.

The vibration isolator bracket according to claim 5 of the present invention is characterized in that the stopper member has a cylindrical shape and is arranged in a direction in which the main vibration input direction and the cylinder axis are orthogonal to each other.

  Thus, by arranging the stopper member in a cylindrical shape in a direction in which the main vibration input direction and the cylinder axis are orthogonal to each other, a bound surface and a rebound surface facing the stopper arm can be easily configured.

  The vibration isolator according to claim 7 of the present invention includes an outer mounting member fixed to the vibration isolator bracket, an inner mounting member connected to the other of the vibration generating portion and the vibration receiving portion, and the inner mounting member. And an elastic body arranged between the outer mounting member and connecting the inner mounting member and the outer mounting member, and a stopper arm fixed to the inner mounting member and extending along the radial direction of the outer mounting member And.

  According to the vibration isolator of the said structure, a manufacturing cost and a number of parts can be suppressed by using the bracket for vibration isolators in any one of Claims 1-6.

  As described above, according to the present invention, the manufacturing cost and the number of parts can be suppressed.

It is a perspective view of the vibration isolator which concerns on embodiment of this invention. It is a disassembled perspective view of the vibration isolator which concerns on embodiment of this invention. It is sectional drawing of the bracket for vibration isolator which concerns on embodiment of this invention, a vibration isolator main body, and a stopper cylinder. It is a front view of the vibration isolator which concerns on embodiment of this invention. It is sectional drawing which shows the holding state in the bracket for vibration isolator which concerns on embodiment of this invention. (A) is an expanded view of the bracket for vibration isolator of embodiment of this invention, (B) is a side view. It is a front view of the vibration isolator which concerns on the modification of embodiment of this invention. It is a front view of the vibration isolator which concerns on the other modification of embodiment of this invention. (A) is an expanded view of the bracket for vibration isolator which concerns on the modification of embodiment of this invention, (B) is a side view. It is sectional drawing of the vibration isolator which concerns on the modification of embodiment of this invention.

  Hereinafter, a vibration isolator bracket 40 and a vibration isolator 10 according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a vibration isolator 10 according to an embodiment of the present invention. The vibration isolator 10 is applied as an engine mount that supports an engine that is a vibration generating unit in an automobile to a vehicle body that is a vibration receiving unit. Note that the symbol S in the figure indicates the axis of the apparatus, the direction along the axis is the axis direction S of the apparatus, and the vertical direction in the figure is the vertical direction of the vibration isolator 10 in the following description. Main vibration (main vibration) for the purpose of vibration isolation is input in the axial direction S.

  As shown in FIG. 2, the vibration isolator 10 of the present embodiment includes a vibration isolator body 12, a stopper cylinder 60, and a vibration isolator bracket 40.

  The vibration isolator main body 12 includes an inner attachment member 14, an outer attachment member 16, and an elastic body 18.

  As shown in FIG. 3, the inner mounting member 14 has a substantially truncated cone shape with a small diameter on the lower side, and a connecting screw hole 14 </ b> A is formed at the upper center (large diameter side center). In the connection screw hole 14A, a female screw for screwing a connection bolt 58 with a stopper arm 56 described later is formed. The inner mounting member 14 has a smaller diameter than the outer mounting member 16.

  The outer mounting member 16 has a substantially cylindrical shape, and is disposed on the radially outer side of the inner mounting member 14 coaxially with the inner mounting member 14 when viewed in the axial direction S. The inner attachment member 14 is disposed so as to protrude outward in the axial direction S with respect to the outer attachment member 16. The axial centers of the inner mounting member 14 and the outer mounting member 16 are arranged along the axial direction S. A step portion 16 </ b> B is formed at the intermediate portion of the outer mounting member 16. The outer mounting member 16 has an elastic body connecting portion 16A on the upper side with the stepped portion 12B interposed therebetween, and a lower side forming a partition holding portion 16C having a smaller diameter than the elastic body connecting portion 16A. A caulking portion 16D that is caulked radially inward is formed at the lower end of the partition holding portion 16C. The outer mounting member 16 is connected to the vehicle body via a vibration isolator bracket 40.

  Between the inner mounting member 14 and the outer mounting member 16, a rubber elastic body 18 serving as a main vibration absorber is disposed. The elastic body 18 is vulcanized and bonded to the outer surface of the inner mounting member 14 and is also vulcanized and bonded to the elastic body connecting portion 16A and the step portion 16B of the outer mounting member 16. The inner mounting member 14 and the outer mounting member 16 are vulcanized and bonded. And are connected elastically.

  In the elastic body 18, a recess 18 </ b> A is formed on the outer side in the axial direction S of the inner mounting member 14 inside the outer mounting member 16. The elastic body 18 is integrally formed with a thin film-like covering portion 18D extending downward from the lower end portion thereof. The covering portion 18 </ b> D is vulcanized and bonded to the inner peripheral surface of the partition holding portion 16 </ b> C of the outer mounting member 16 to cover the inner wall of the outer mounting member 16. A step portion 16E is formed below a portion corresponding to the step portion 16B of the covering portion 18D. A flange portion 24 of the partition member 20 described later is brought into contact with the step portion 16E.

  A partition member 20 and a restriction passage member 30 are arranged on the inner peripheral side of the covering portion 18D. In the partition member 20 and the restriction passage member 30, the partition clamping portion 16C and the crimping portion 16D are fixed by being crimped radially inward. The partition member 20 has a cylindrical shape with a flange, and includes a cylindrical portion 22, a flange portion 24, and a movable elastic film 28.

  The cylindrical portion 22 is cylindrical, and a flange portion 24 is configured at the upper end portion of the cylindrical portion 22 so as to extend outward in the radial direction. The outer peripheral end of the flange portion 24 is brought into contact with the step portion 16E, and positioning in the axial direction S is performed. The flange portion 24 is formed with a communication hole (not shown) through which a main liquid chamber 38 (described later) and the restriction passage 26 are communicated.

  A movable elastic film 28 is disposed inside the cylindrical portion 22 in the radial direction. The movable elastic film 28 has a disk shape and can be elastically deformed. The movable elastic film 28 is bonded to the inner wall of the cylindrical portion 22 so as to partition the cylindrical portion 22 in the vertical direction. The movable elastic film 28 is made of an elastically deformable film such as rubber or resin.

  A main liquid chamber 38 is formed on the inner side surrounded by the recess 18 </ b> A on the lower surface of the elastic body 18 and the upper surface of the partition member 20. A liquid is sealed in the main liquid chamber 38. As the liquid, water, oil, ethylene glycol or the like can be used.

  The restriction passage member 30 is annular and includes a passage outer cylinder portion 32, a bottom portion 34, and a passage inner cylinder portion 36.

  The passage outer cylinder portion 32 has a cylindrical shape whose outer diameter is slightly smaller than that of the partition holding portion 16C, and is disposed on the inner peripheral side of the partition holding portion 16C. The passage outer cylinder portion 32 is disposed to be opposed to the outer peripheral surface of the cylinder portion 22 of the partition member 20, and is in pressure contact with the inner peripheral surface of the partition holding portion 16C via the covering portion 18D.

  The bottom portion 34 is formed to be bent radially inward from the lower end portion of the passage outer cylinder portion 32, and is spaced apart from the flange portion 24 on the outer peripheral side of the cylinder portion 22 of the partition member 20. Further, the bottom portion 34 is disposed so as to overlap the cylindrical portion 22 when viewed from the inside of the cylindrical portion 22 in the axial direction S, that is, from the radial direction.

  The passage inner cylinder portion 36 is formed by being bent downward from the inner end portion of the bottom portion 34, and is disposed along the cylinder portion 22 of the partition member 20. The lower end portion of the passage inner cylinder portion 36 protrudes below the lower end portion of the second mounting member 12.

  A restriction passage that is surrounded by the inner peripheral surface of the passage outer cylindrical portion 32 and the upper surface of the bottom portion 34, the lower surface of the flange portion 24, and the outer peripheral surface of the cylindrical portion 22, and communicates the main liquid chamber 38 and the sub liquid chamber 39 described later. 26 is configured.

  A part of the restricting passage member 30 in the circumferential direction is configured with a communication port 30 </ b> A configured by cutting out a part in the circumferential direction of the passage inner cylinder part 36 and a part in the circumferential direction of the bottom part 34. In addition, about the part which notched the bottom part 34, the reinforcement part 34A for crimping is left on the radial direction outer side. An elastic film diaphragm 50 is vulcanized and bonded to the restriction passage member 30 so as to cover the lower opening. In the restriction passage member 30, a seal portion 56 is integrally vulcanized with the diaphragm 50 so as to cover the radially inner side of the bottom portion 34 and the inner peripheral surface of the passage inner cylinder portion 36. The outer periphery of the diaphragm 50 is bonded to the restriction passage member 30 by the seal portion 56. In addition, an inner film portion 58 that is formed integrally with the seal portion 56 and covers the inside of the bottom portion 34 and the inside of the passage outer cylinder portion 32 is formed.

  The diaphragm 50 includes a cylindrical wall portion 52 and a movable bottom portion 54. The cylindrical wall portion 52 has a substantially cylindrical shape, and the upper end is bonded to the inner peripheral side of the bottom portion 34 of the restriction passage member 30 as a seal portion 56. A portion corresponding to the communication port 30 </ b> A of the cylindrical wall portion 52 has a convex shape outward in the radial direction, and is bonded to the outer peripheral side of the bottom portion 34. As a result, a communication path 50 </ b> R communicating with the sub-liquid chamber 39 described later is formed between the outer periphery of the cylindrical portion 22 and the diaphragm 50.

  The movable bottom portion 54 has a bowl shape, the outer periphery thereof is continuous with the cylindrical wall portion 52, and is formed so that the bottom portion of the bowl faces upward when there is no vibration input. The movable bottom portion 54 is configured integrally with the cylindrical wall portion 52.

  A sub liquid chamber 39 is formed on the inner side surrounded by the diaphragm 50 and the lower surface of the partition member 20. The sub liquid chamber 39 communicates with the main liquid chamber 38 via the communication port 30A, the restriction passage 26, and the communication hole 24A. Diaphragm 50 having a convex shape below communication port 30A is configured to be thicker than other portions. Hereinafter, this portion of the diaphragm 50 is referred to as “communication convex portion 50A”. Similarly to the main liquid chamber 38, the sub liquid chamber 39 is also filled with liquid.

  The partition member 20 is formed in the hollow portion of the restricting passage member 30 so that the side opposite to the flange portion 24 is the diaphragm 50 side, and the communication port 30A and the communication hole 24A do not overlap in the circumferential direction but are shifted from each other. It is press-fitted through the seal portion 56. By the seal portion 56, the cylindrical portion 22 of the partition member 20 and the in-passage cylindrical portion 36 of the restriction passage member 30 are in close contact with each other.

  As shown in FIGS. 1, 2, and 4, the stopper cylinder 60 has a quadrangular cylinder shape, and the cylinder axis direction is arranged in a direction orthogonal to the axial direction S. Bolt holes 62 </ b> A and main body holes 62 </ b> B are coaxially formed on a pair of mutually facing surfaces of the stopper cylinder 60. The bolt hole 62A has a diameter through which a bolt B, which will be described later, can be inserted, and the main body hole 62B has a diameter slightly smaller than the outer diameter of the outer mounting member 16 of the vibration isolator main body 12, and the upper end surface of the outer mounting member 16 Are configured to contact each other. The surface where the bolt hole 62A is configured is the rebound stopper surface 65, and the surface where the main body hole 62B is configured is the bound stopper surface 63. In the bound stopper surface 63, one end side of the surface where the main body hole 62 </ b> B is configured protrudes to the outside from the tube ends of the other three surfaces of the stopper tube 60. The stopper cylinder 60 can be configured by forming a single metal plate into a rectangular tube shape by bending, and abutting and welding both end faces. In this embodiment, they are abutted at the abutting portion 62C. By manufacturing the stopper cylinder 60 by bending, the number of manufacturing processes is reduced compared to the case of manufacturing by drawing, and the stopper cylinder 60 can be manufactured at low cost.

  As shown in FIGS. 1, 3, and 4, the vibration isolator bracket 40 includes a pair of bracket members 42 and 46.

  The pair of bracket members 42 and 46 are disposed at positions facing each other with the vibration isolator main body 12 interposed therebetween. Each of the bracket members 42 and 46 is formed by bending a single metal plate, and includes mounting plate portions 42A and 46A, first wing portions 42B and 46B, second wing portions 42C and 46C, and side surface holding portions. 44B, 44C (collectively referred to as “side surface holding portion 44”), side surface holding portions 48B, 48C, collectively referred to as “side surface holding portion 48”), and blocking portions 45B, 45C (collectively referred to as “blocking”). Part 45 ”) and blocking parts 47B and 47C (collectively referred to as“ blocking part 47 ”). The bracket members 42 and 46 can also be manufactured at a low cost by manufacturing them by bending as compared with the case of manufacturing by drawing.

  The mounting plate portion 42A of the bracket member 42 has a plate surface arranged in a direction substantially orthogonal to the axial direction S of the outer mounting member 16 of the vibration isolator main body 12, and has a connection hole 42H for connection with a vehicle body (not shown). It is configured. The first wing portion 42B is bent so as to rise from the mounting plate portion 42A, and the plate surface is in a direction along the axial direction S of the outer mounting member 16 and intersects the circumferential direction of the outer peripheral surface of the outer mounting member 16. It is arranged to become. The second wing portion 42C is bent so as to rise from the side opposite to the first wing portion 42B of the plate surface of the mounting plate portion 42A, and the plate surface is in a direction along the axial direction S of the outer mounting member 16 and outside. It arrange | positions so that it may become the direction which intersects the circumferential direction of the outer peripheral surface of the attachment member 16. As shown in FIG.

  The first wing portion 42B and the second wing portion 42C are arranged so that their plate surfaces are substantially parallel to each other, and one end surface 42T formed along the plate thickness direction is connected to the outer mounting member 16 of the vibration isolator main body 12. It arrange | positions so that it may oppose. A first joint portion 42BS and a second joint portion 42CS are formed on the tip side of each of the first wing portion 42B and the second wing portion 42C. The first joint portion 42BS and the second joint portion 42CS are arranged so that the plate surfaces are substantially orthogonal to the side surfaces of the stopper cylinder 60, and the end surfaces thereof are fixed to the outer surface of the stopper cylinder 60. The first wing portion 42B, the second wing portion 42C, and the mounting plate portion 42A form one of the pair of legs of the present invention.

  A side surface holding portion 44B is formed below the first joint portion 42BS at the intermediate portion in the axial direction S of the first wing portion 42B. The side surface holding portion 44B is formed integrally and continuously with the first wing portion 42B, and extends in a direction away from the first wing portion 42B. The side surface holding part 44 </ b> B has a plate surface arranged along the outer peripheral surface of the outer mounting member 16, and the inner side of the plate surface has an R shape along the circumferential direction of the outer peripheral surface of the outer mounting member 16. Further, the end surface 44T continuous with the one end surface 42T of the side surface holding portion 44B is in contact with the back surface (stopper back surface 63R) side of the bound stopper surface 63 of the stopper cylinder 60, as shown in FIG.

  A side surface holding portion 44C is formed below the second joint portion 42CS at the intermediate portion in the axial direction S of the second wing portion 42C. The side surface holding portion 44C is continuously formed integrally with the second wing portion 42C, and extends in a direction away from the second wing portion 42C. The plate surface of the side surface holding portion 44 </ b> C is disposed along the outer peripheral surface of the outer mounting member 16, and the inner side of the plate surface has an R shape along the circumferential direction of the outer peripheral surface of the outer mounting member 16. Further, the end surface continuous with the one end surface 42T of the side surface holding portion 44C is in contact with the back surface (stopper back surface 63R) side of the bound stopper surface 63 of the stopper cylinder 60 in the same manner as the side surface holding portion 44B.

  A blocking portion 45B is integrally formed continuously with the side surface holding portion 44B. The blocking portion 45B extends downward from the lower portion of the side surface holding portion 44B, is folded inward in the radial direction of the outer mounting member 16, and is engaged with the step portion 16B. The blocking portion 45B sandwiches the elastic connecting portion 16A of the outer mounting member 16 with the stopper back surface 63R.

  Further, a blocking portion 45C is integrally and continuously formed on the side surface holding portion 44C. The shape of the blocking portion 45C, the engagement with the stepped portion 16B, and the sandwiching of the elastic connecting portion 16A are the same as those of the blocking portion 45B.

  The bracket member 46 is disposed at a position facing the bracket member 42 and the vibration isolator main body 12 in the radial direction. The bracket member 46 includes a mounting plate portion 46A, a first wing portion 46B, a second wing portion 46C, side surface holding portions 48B and 48C, and blocking portions 47B and 47C. These configurations and the attachment of each part are the same as those of the attachment plate part 42A, the first wing part 42B, the second wing part 42C, the side surface holding parts 44B and 44C, and the blocking parts 45B and 45C of the bracket member 42. Further, the first wing portion 46B and the second wing portion 46C are configured with a first joint portion 46BS and a first joint portion 46CS that are configured in the same manner as the first joint portion 42BS and the first joint portion 42CS. Similarly to the one end face 42T, one end face 46T is configured in the first joint 46BS and the first joint 46CS. The side surface holding portions 48B and 48C each have an end surface 48T similar to the end surface 44T. The first wing portion 46B, the second wing portion 46C, and the mounting plate portion 46A form the other of the pair of leg portions of the present invention.

  The bracket members 42 and 46 are fixed to the stopper cylinder 60 as described above, and the elastic coupling portion 16A of the vibration isolator body 12 is interposed between the stopper back surface 63R of the stopper cylinder 60 and the blocking portions 45 and 47. The relative movement in the axial direction S between the bracket members 42 and 46 and the outer mounting member 16 is prevented.

  The vibration isolator bracket 40 is connected to the vehicle body by fastening bolts (not shown) to the vehicle body (not shown) via the connection holes 42H and 46H.

  The vibration isolator body 12 is inserted from below the vibration isolator bracket 40 so that the inner mounting member 14 is on the stopper cylinder 60 side (upper side), and the outer mounting member 16 is inside the side surface holding portions 44 and 45. It is fixed to.

  As shown in FIG. 3, a stopper arm 56 is fixed to the upper surface (large diameter surface) side of the inner mounting member 14. The stopper arm 56 has an elongated shape with a rectangular cross section, and has a connection hole 56A. The stopper arm 56 is fixed to the inner attachment member 14 by the bolt B being screwed into the connection screw hole 14A of the inner attachment member 14 via the connection hole 56A. The stopper arm 56 extends to the outside of the outer mounting member 16 on the side where the bound stopper surface 63 is projected. The outer side of the stopper arm 56 is covered with a rubber member having a thickness, and an upper rubber portion 57A is formed on the upper surface side of the stopper arm 56, and a lower rubber portion 57B is formed on the lower surface side of the stopper arm 56. . The upper rubber portion 57A is disposed so as to face the rebound stopper surface 65, and the lower rubber portion 57B is disposed so as to face the bound stopper surface 63. The stopper arm 56 is connected to an engine (not shown) at the end on the extended side.

  Next, manufacture of the vibration isolator bracket 40 and assembly of the vibration isolator body 12 will be described.

  As for the bracket member 42, the metal plate is punched into the shape shown in FIG. 6A, the first wing portion 42B and the second wing portion 42C are folded, and the side surface holding portions 44B and 44C are arranged on the outer periphery of the outer mounting member 16. Curve to the shape along. Similarly, in the case of the bracket member 46, the metal plate is punched into the same shape as the bracket member 42, the first wing portion 46B and the second wing portion 46C are folded, and the side surface holding portions 45B and 45C are attached to the outside. It is bent into a shape along the outer periphery of the member 16.

  Also for the stopper cylinder 60, a metal plate is punched out, bent into a square cylinder, and the end faces in the longitudinal direction are butted and welded.

  Then, one end surfaces 42T of the first joint portion 42BS and the second joint portion 42CS of the bracket member 42 are fixed to the side surfaces of the stopper cylinder 60 by welding or the like, and the upper end surfaces 44T of the side surface holding portions 44B and 44C are connected to the stopper rear surface 63R. Make contact. Further, one end surfaces 46T of the first joint portion 46BS and the second joint portion 46CS of the bracket member 46 are fixed to the side surface of the stopper cylinder 60 by welding or the like, and the upper end surface of the side surface holding portion 45 is brought into contact with the stopper back surface 63R. . Thereby, the stopper cylinder 60 and the vibration isolator bracket 40 are integrated.

  Next, the vibration isolator main body 12 is inserted from below the vibration isolator bracket 40, the inner mounting member 14 is disposed in the stopper cylinder 60, and the upper end surface of the outer mounting member 16 abuts against the stopper back surface 63R. Let In this state, the blocking portions 45 and 47 are folded inward in the radial direction, and the outer mounting member 16 is fixed between the stopper back surface 63R and the blocking portions 45 and 47.

  Next, the stopper arm 56 is inserted into the stopper cylinder 60, placed on the upper surface of the inner mounting member 14, and the fastening hole 56A is disposed at a position corresponding to the connecting screw hole 14A. Then, the fastening bolt B is inserted from the bolt hole 62 </ b> A of the stopper cylinder 60 and screwed into the connecting screw hole 14 </ b> A to connect the stopper arm 56 and the inner mounting member 14.

  Thereby, the vibration isolator body 12 is assembled to the vibration isolator bracket 40 and the stopper cylinder 60.

  Next, the operation of the vibration isolator 10 according to this embodiment will be described.

  In the vibration isolator 10, when vibration is input from the engine or the vehicle body side, the elastic body 18 which is the main vibration absorber is elastically deformed. Due to this elastic deformation, the input vibration is attenuated and absorbed.

  Further, in the vibration isolator 10, when vibration in a relatively low frequency range, such as shake vibration, is input from the engine, the internal volume of the main liquid chamber 38 is expanded or contracted due to elastic deformation of the elastic body 18, and the main liquid chamber 38. With the expansion / contraction of the liquid, the liquid flows between the main liquid chamber 38 and the sub liquid chamber 39 through the restriction passage 26. At this time, a liquid column resonance occurs in the restriction passage 26, and a vibration isolation effect and a vibration suppression effect can be obtained by the liquid column resonance or the like.

  On the other hand, when a relatively high frequency range vibration such as idle vibration is input from the engine, the restriction passage 26 is clogged. At this time, the movable elastic film 28 is elastically deformed so as to expand and contract the volume in the main liquid chamber 38. As a result, an increase in the hydraulic pressure in the main liquid chamber 38 is suppressed and an increase in the dynamic spring constant can be suppressed, so that vibrations in a high frequency range can also be effectively absorbed.

  As described above, in the vibration isolator bracket 40 of the present embodiment, the side surface holding portions 44 and 45 that hold the outer mounting member 16 of the vibration isolator main body 12 have the first wing portion 42B and the second wing portion 42C. Alternatively, since it is continuous with the first wing portion 46B and the second wing portion 46C and is formed by bending one plate material, it is necessary to provide a member for holding the outer mounting member 16 separately. The number of parts can be reduced. In addition, the manufacturing cost can be reduced as compared with the case of drawing.

  In the present embodiment, the side surface holding portion 44 of the bracket member 42 and the side surface holding portion 45 of the bracket member 46 are separated from each other. However, as shown in FIG. They may extend in the direction, attach to each other, and be welded.

  In this embodiment, the outer mounting member 16 is fixed between the stopper back surface 63R of the stopper cylinder 60 and the blocking portions 45 and 47. However, as shown in FIG. 8, the blocking portion 45 of the side surface holding portions 44 and 45 is used. , 47 are formed integrally with the side surface holding portions 44, 45 at positions facing the side holding portions 44, 45, and the holding portions 44A, 45A are folded inward in the radial direction and engaged with the upper end surface of the outer mounting member 16. Alternatively, the elastic body connecting portion 16A of the outer mounting member 16 may be sandwiched and fixed between the blocking portions 45, 47 and the sandwiching portions 44A, 45A.

  In the present embodiment, the bracket members 42 and 46 are each described as being formed of a single metal plate. However, the bracket members 42 and 46 are not necessarily formed of a single metal plate. It may be formed of a single metal plate. In this case, as shown in FIG. 9, the single plate 42P1 in which the first wing 42B and the mounting plate 42A are integrally formed, and the second wing 42C and the mounting plate 42A are integrally formed. The formed single plate 42P2 can be prepared, the first wing portion 42B and the second wing portion 42C can be folded, and the two attachment plate portions 42A can be overlapped and attached to the vehicle body with bolts or the like. . Thus, the strength of the mounting portion with the vehicle body can be increased by configuring the mounting plate portion 42A with two plates.

  In this embodiment, the outer peripheral surface of the outer mounting member 14 of the vibration isolator main body 12 is directly held by the bracket members 42 and 46. However, the vibration isolator main body 12 is accommodated in another member, for example, a cylindrical member, The outside may be held by bracket members 42 and 46.

  The anti-vibration device body 12 described in the present embodiment is an example, and the anti-vibration device body having another configuration can be held by the anti-vibration device bracket 40. For example, in the present embodiment, the anti-vibration device 10 in which the liquid-sealed anti-vibration device body 12 is attached to the anti-vibration device bracket 40 has been described. As shown in FIG. A so-called solid-type vibration isolator main body 13 that is not liquid-sealed can also be attached.

10 Anti-Vibration Device 12 Anti-Vibration Device Body 12 Anti-Vibration Device Bracket 13 Anti-Vibration Device Body 14 Inner Mounting Member 16 Outer Mounting Member 16B Step 18 Elastic Body 40 Anti-Vibration Device Brackets 42, 46 Bracket Member 42A Mounting Plate 42B First wing portion 42C Second wing portion 44A Holding portion 44T Upper end surface 44 Side surface holding portion 44T End surface 45 Blocking portion 46 Bracket member 46T One end surface 46A Mounting plate portion 46B First wing portion 46C Second wing portion 47 Blocking portion 48 Side surface holding 48T End surface 60 Stopper cylinder (stopper member)
63R Stopper reverse side S Axial direction

Claims (7)

An outer mounting member connected to one of the vibration generating unit and the vibration receiving unit, an inner mounting member connected to the other of the vibration generating unit and the vibration receiving unit, and disposed between the inner mounting member and the outer mounting member. A vibration isolator bracket for supporting a vibration isolator body having an elastic body connecting the inner mounting member and the outer mounting member,
A plate-like mounting plate provided on both sides across the outer mounting member of the vibration isolator main body and fixed to one of the vibration generating portion and the vibration receiving portion, and the mounting plate portion continuous integrally. And a wing portion arranged so that a direction along the plate surface intersects the outer surface of the outer mounting member,
A side surface holding part that is integrally continuous with the wing part and is arranged along a side surface of the outer mounting member to hold the vibration isolator body;
A blocking portion that is integrally continuous with the side surface holding portion, protrudes from the side surface holding portion in the main vibration input direction, and prevents relative movement in the main vibration input direction between the outer mounting member and the side surface holding portion;
Bracket for vibration isolator equipped with. The anti-vibration device bracket according to claim 1, wherein the leg portion, the side surface holding portion, and the blocking portion are formed of a single plate material.   2. The device according to claim 1, further comprising a pinching portion that is fixed to the leg portion, is disposed at a position facing the blocking portion with the side surface holding portion interposed therebetween, and holds the outer mounting member between the blocking portion. 2. Bracket for vibration isolator according to 2.   The anti-vibration device bracket according to claim 3, wherein the clamping portion is configured by a stopper member in a main vibration input direction of the anti-vibration device main body. The anti-vibration device bracket according to claim 4, wherein the stopper member has a cylindrical shape and is disposed in a direction in which the main vibration input direction and the cylinder axis are orthogonal to each other. The anti-vibration device bracket according to any one of claims 2 to 5, wherein a plate surface of the side surface holding portion is arranged along an outer peripheral surface of the outer mounting member. Bracket for vibration isolator according to any one of claims 1 to 6,
An outer mounting member fixed to the vibration isolator bracket;
An inner mounting member coupled to the other of the vibration generating portion and the vibration receiving portion;
An elastic body disposed between the inner mounting member and the outer mounting member to connect the inner mounting member and the outer mounting member;
A stopper arm fixed to the inner mounting member and extending to the outside of the outer mounting member;
Anti-vibration device with

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