JP2015021503A - Vibration isolator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolator of a new structure capable of easily forming a bag-shaped stopper portion including depression portions on a stopper plate, and realizing superior dimensional accuracy of the stopper portion.SOLUTION: In a vibration isolator 10, a stopper plate 14 is constituted by combining a supporting member 48 and first and second side plate members 50 as separate members to each other, a plurality of contact projections 92 projecting from both end parts in a width direction to a second mounting plate member 20 side at prescribed intervals, are formed on a central plate portion 54 of the supporting plate member 48, depression portions 68c, 70c are disposed on at least one of a first vertical plate portion 68 and a second vertical plate portion 70 of the supporting plate member 48, and the first and second side plate members 50 are positioned to the supporting plate member 48 by being brought into contact with the plurality of contact projections 92 in the width direction, and fitted to the vertical plate portions 68, 70 provided with the depression portions 68c, 70c.

Description

  The present invention relates to an anti-vibration device that can be employed in an engine mount, and more particularly to an anti-vibration device having a novel structure including a stopper mechanism that limits the relative displacement between members to be anti-vibrated.

  As one type of anti-vibration device disposed between anti-vibration-connected members, there is known an anti-vibration device in which a first mounting plate member and a second mounting plate member that are arranged to face each other are connected by a rubber elastic body. It has been. Such an anti-vibration device is used for engine mounts and body mounts for automobiles. For example, as disclosed in Japanese Patent Application Laid-Open No. 2008-232390 (Patent Document 1), the power unit engine is obliquely below. Therefore, the power unit is arranged to be inclined at positions sandwiching the engine from both sides so that the power unit is supported in a vibration-proof manner with respect to the vehicle body.

  Further, in such a vibration isolator, a stopper mechanism is often provided to limit the amount of elastic deformation of the main rubber elastic body and thus the relative displacement amount of the vibration-isolated member. Specifically, as shown in, for example, [FIG. 13] of Japanese Patent Application Laid-Open No. 2008-144922 (Patent Document 2), a stopper plate is attached to the first mounting plate member so as to overlap the stopper plate. First and second stopper portions are provided to extend from the opposite sides of the plate to the second mounting plate member side, respectively, and these first and second stopper portions are provided on the second mounting plate member. First and second stopper mechanisms that limit the relative displacement between the first mounting plate member and the second mounting plate member by contacting the first and second contact portions are configured.

  Further, in order to limit the amount of displacement in various directions required by such a stopper mechanism, as shown in [FIG. There may be a depression portion that comes into contact with the contact portion of the mounting plate member from the back side.

  However, if a bag-shaped stopper part with a corner part is integrally formed on the stopper plate, the manufacturing of the stopper plate requires a high degree of processing technology and a large number of work steps. Not only is the increase in cost a problem, but it may be difficult to manufacture the stopper plate itself. In addition, the stopper plate shown in [FIG. 13] of Patent Document 2 is formed by, for example, a press. However, when the side plate portion and the vertical plate portion constituting the stopper portion are formed by drawing by the press, these stopper plates are formed. Since the side plate portion and the vertical plate portion are gradually thinned toward the extending tip side, there is a possibility that sufficient load resistance cannot be obtained at the corner portion constituting the extending tip end of the stopper portion.

JP 2008-232390 A JP 2008-144921 A

  The present invention has been made in the background of the above-mentioned circumstances, and its solution is to easily form a bag-like stopper portion having a depression portion on the stopper plate, and to provide an excellent stopper portion. An object of the present invention is to provide a vibration isolator having a novel structure capable of realizing high dimensional accuracy.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  In the first aspect of the present invention, the first mounting plate member and the second mounting plate member that are attached to each one of the vibration-proof connected members are disposed opposite to each other, and the main body disposed between the opposing surfaces. While being connected by a rubber elastic body, a stopper plate is attached to the first mounting plate member so as to overlap and extend from the opposite side of the stopper plate to the second mounting plate member side. First and second stopper portions are provided, and the first and second stopper portions are brought into contact with first and second contact portions provided on the second mounting plate member. In the vibration isolator provided with the first and second stopper mechanisms for limiting the relative displacement between the first mounting plate member and the second mounting plate member, the stopper plate is the first mounting plate. Support plate member attached to the member, and the support plate A first side plate member and a second side plate member fixed to both end portions in the width direction orthogonal to the opposing direction of the opposing side portion of the material and extending to the second mounting plate member side, and the support The first and second stoppers are extended from the opposite side portion of the central plate portion to the second mounting plate member side by a central plate portion that is attached by being overlapped with the first mounting plate member. The first and second hanging plate portions constituting the portion, and the contact plate projections projecting toward the second mounting plate member at both ends in the width direction of the central plate portion of the support plate member Are formed at a predetermined distance in the opposing direction of the opposing side portion, and at least one of the first and second vertical plate portions of the support plate member is provided with the first and second vertical plate portions. A depression portion that abuts against the second abutting portion from the back is provided, and the first and second The side plate member is brought into contact with each of a plurality of corresponding contact projections in the width direction and is fitted into the hanging plate portion having the depression portion so as to be positioned with respect to the support plate member. , Feature.

  According to the first aspect of the present invention, the stopper plate is configured by combining the support plate member and the first and second side plate members that are separate from each other. Compared with the case where the first and second side plate members are integrally formed by press working, excellent dimensional accuracy can be realized in the support plate member and the first and second side plate members. Therefore, in the first and second stopper mechanisms, the intended load resistance and stopper clearance can be realized with high accuracy, and the improvement of the durability by the stopper function is advantageously achieved.

  In addition, when the support plate member and the first and second side plate members separated from each other are fixed, the first and second side plate members can be easily and accurately positioned with respect to the support plate member. It is said that. That is, first, a plurality of contact protrusions are formed on the central plate portion of the support plate member, and the first and second side plate members are contacted with the contact protrusions in the width direction. The second side plate member is positioned in the width direction with respect to the support plate member.

  Furthermore, at the opposite side of the central plate portion of the support plate member, at least one of the first and second hanging plate portions provided with a depression angle portion is formed, and the first hanging plate portion provided with the depression angle portion is first. And a second side plate member is fitted. Thus, the first and second side plate members are positioned in the opposing direction of the first mounting plate member and the second mounting plate member with respect to the support plate member, and the thicknesses of the first and second side plate members are Inclination in the vertical direction is limited.

  Thus, the first and second side plate members are positioned with respect to the support plate member in a temporarily assembled state before being fixed to the support plate member, and the first and second side plate members are It is accurately fixed so as to extend in a predetermined direction at a predetermined position with respect to the support plate member. Therefore, variations in stopper clearance in the first and second stopper mechanisms, unnecessary inclination of the contact surface, and the like can be avoided, and a desired stopper function can be stably obtained.

  According to a second aspect of the present invention, in the vibration isolator described in the first aspect, both the first and second vertical plate portions have the depression portion, and the first and second Both end portions of the side plate member are fitted and fixed to the first and second hanging plate portions.

  According to the second aspect, since both end portions of the first and second side plate members are fitted into the first and second hanging plate portions, the first and second side plate members are supported at both ends. By positioning with respect to the member, a positioning operation with respect to the support plate member can be obtained more effectively.

  In addition, by providing a depression portion on both the first and second hanging plate portions, the depression portion and the first and second contact portions in both the first stopper mechanism and the second stopper mechanism. The stopper function is exhibited in more directions.

  According to a third aspect of the present invention, in the vibration isolator described in the first or second aspect, the first and second first and second fastening plates are fitted and fixed to the first and second hanging plate portions. An end portion of the side plate member extends to the second mounting plate member side more greatly than an intermediate portion of the first and second side plate members.

  According to the third aspect, since the fixing area of the first and second side plate members to the support plate member is increased, the fixation between the support plate member and the first and second side plate members is realized more firmly. Thus, the load resistance against the stopper load can be advantageously ensured.

  Moreover, the first and second hanging plates of the first and second side plate members are set by increasing the extension dimension of the first and second side plate members toward the second mounting plate member at the end. The positioning action by the insertion into the portion is efficiently exhibited, and the first and second side plate members are fixed to the support plate member at the correct positions and orientations.

  According to a fourth aspect of the present invention, in the vibration isolator described in any one of the first to third aspects, the abutting protrusions are at opposite end portions of the opposite side portion of the central plate portion in the opposite direction. Is formed.

  According to the fourth aspect, at the both ends in the width direction of the central plate portion, the two contact protrusions are arranged at positions separated in the opposing direction of the opposing side portions, so that the first and The second side plate member can be efficiently positioned with respect to the support plate member.

  According to a fifth aspect of the present invention, in the vibration isolator described in any one of the first to fourth aspects, the first mounting plate member is provided with a mounting bolt protruding outward. The first mounting plate member is positioned on both sides of the mounting plate in the opposing direction of the opposing side portion of the stopper plate, and the stopper plate is located with respect to the first mounting plate member. A first positioning projection for positioning the first mounting plate member, and a second positioning projection for positioning the first mounting plate member with respect to the one of the vibration-proof connected members. A positioning projection and a bolt insertion hole through which the mounting bolt is inserted in the central plate portion of the stopper plate. The central plate portion has a bolt insertion hole on both sides of the bolt insertion hole. 1st and 2nd positioning protrusion and each pair The first and second insertion holes are formed at the positions where the first positioning projections are fitted to the first insertion hole over the entire circumference, while the bolt insertion holes And the second insertion hole has a long hole structure extending in the opposing direction of the opposing side portion of the stopper plate, and the first mounting plate member has the first insertion portion of the stopper plate. Tilt in the direction of lifting the insertion hole side is allowed, and the second positioning projection is positioned with respect to the second insertion hole in the width direction.

  According to the fifth aspect, since both the bolt insertion hole and the second insertion hole have a long hole structure, the stopper plate is allowed to tilt to lift the first insertion hole side. Even when the depression angle at the stopper portion is large, the stopper plate can be assembled to the first mounting plate member while avoiding catching on the contact portion of the stopper portion.

  At this time, the first positioning projection is smaller in projection height than the second positioning projection, and is positioned farther from the tilting shaft of the stopper plate than the mounting bolt and the second positioning projection. I'm hurt. Therefore, even when the stopper plate is tilted and assembled to the first mounting plate member while avoiding catching on the contact portion of the stopper portion, the first positioning projection is inserted into the first insertion hole. The tilt angle of the stopper plate is already small or substantially parallel to the first mounting plate member, effectively preventing the stopper plate from being assembled by the first positioning projection being caught around the first insertion hole. Avoided.

  When the stopper plate is overlapped with the first mounting plate member in close contact, the first positioning protrusion is fitted to the first insertion hole over the entire circumference, and the second positioning protrusion is By being locked and positioned in one direction with respect to the second insertion hole, it is possible to reliably and highly accurately position the stopper plate with respect to the first mounting plate member.

  According to the present invention, the stopper plate is configured by combining the support plate member and the first and second side plate members that are separate from each other, with respect to the contact protrusion that protrudes from the central plate portion of the support plate member. The first and second side plate members are in contact with each other in the width direction, and the first and second side plate members are fitted into the vertical plate portion having the depression portion. Accordingly, when the first and second side plate members are fixed to the support plate member, the first and second side plate members can be fixed while being positioned in multiple directions with respect to the support plate member. In addition, since the support plate member and the first and second side plate members are separated from each other and then assembled, the dimensional change of the member due to processing is avoided, and the intended load resistance and stopper clearance are achieved. Can be set with high accuracy.

The perspective view which shows the engine mount which is a vibration isolator as embodiment of this invention. It is a longitudinal cross-sectional view showing the mounting state of the engine mount shown by FIG. 1, Comprising: The figure corresponded in the II-II cross section of FIG. The top view of the engine mount of the mounting state shown by FIG. The front view of the engine mount of the mounting state shown by FIG. VV sectional drawing in FIG. The front view which shows the mount main body which comprises the engine mount shown by FIG. The front view which shows the stopper plate which comprises the engine mount shown by FIG. The bottom view of the stopper plate shown by FIG. The perspective view of the stopper plate shown by FIG. XX sectional drawing of FIG. XI-XI sectional drawing of FIG. Explanatory drawing which shows sequentially the assembly | attachment process of the stopper plate shown in FIG. 7 with respect to the mount main body shown in FIG. 6 as (a)-(d).

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIGS. 1 to 5 show an engine mount 10 as a vibration isolator as one embodiment of the present invention. The engine mount 10 is a square mount, and has a structure in which the stopper plate 14 shown in FIGS. 7 to 11 is assembled to the mount body 12 shown in FIG.

  More specifically, as shown in FIGS. 1 to 6, the mount main body 12 includes a main rubber elastic body 16 having a substantially rectangular block shape, and the main mounting rubber member 16 provides a first mounting plate member. 18 and the second mounting plate member 20 are elastically connected. That is, each of the first mounting plate member 18 and the second mounting plate member 20 is constituted by a pressed metal plate or the like, and is disposed to face each other with a predetermined distance therebetween. The main rubber elastic body 16 is disposed between the opposing surfaces of the first mounting plate member 18 and the second mounting plate member 20, and the first and second mounting members are attached to the main rubber elastic body 16. The plate members 18 and 20 are vulcanized and bonded. 2 to 5 show a state where the main rubber elastic body 16 is elastically deformed by the input of the shared support load of the power unit mounted on the vehicle. In FIG. 3, the main rubber elastic body 16 is not shown.

  The first mounting plate member 18 has a substantially flat rectangular flat plate shape as a whole, while the second mounting plate member 20 is longer than the first mounting plate member 18 in the longitudinal direction (opposing to be described later). Reinforcing ribs 22 having a large dimension in the opposite direction of the side portions 62 and 62 (left and right direction in FIG. 3) and extending in the longitudinal direction at the center portion in the width direction are provided. Further, on both sides in the longitudinal direction of the second mounting plate member 20, a first contact portion 24 and a second contact portion 26 that protrude outward from the main rubber elastic body 16 are integrally formed.

  The first contact portion 24 and the second contact portion 26 protrude so as to rise from the second mounting plate member 20 toward the first mounting plate member 18, and their bent portions are reinforcing ribs. 22 is reinforced. The first abutting portion 24 and the second abutting portion 26 are formed with a first cushioning rubber 28 and a second cushioning rubber 30 so as to cover the respective surfaces. Is vulcanized and bonded. In the present embodiment, the first and second buffer rubbers 28 and 30 are integrally formed with the main rubber elastic body 16.

  In addition, the first mounting plate member 18 is provided with a mounting bolt 32 which is located at a substantially central portion and protrudes substantially vertically toward the outside. Further, a first positioning projection 34 having a small projection is outwardly provided on one side in the longitudinal direction of the first mounting plate member 18 (the right side in FIGS. 3, 4 and 6) with respect to the mounting bolt 32. Is formed to protrude. On the other hand, on the opposite side of the first positioning plate 34 in the longitudinal direction of the first mounting plate member 18 with the mounting bolt 32 interposed therebetween, it protrudes substantially vertically with a protruding height larger than that of the first positioning projection 34. A second positioning projection 36 is formed to project outward. In the present embodiment, the protrusion height of the first positioning protrusion 34 is set so as not to protrude from the outer surface of the stopper plate 14.

  These first and second positioning projections 34 and 36 can be formed by welding other members to the first mounting plate member 18 or by using fixed rivets or the like. Thus, the first mounting plate member 18 is integrally formed. Further, each of the first and second positioning protrusions 34 and 36 has a tapered shape having a distal end outer diameter smaller than a proximal end outer diameter. In particular, in the present embodiment, the first positioning protrusion 34 has a substantially circular short column shape, while the second positioning protrusion 36 has a substantially cylindrical base end portion extending with a substantially constant outer diameter. The hemispherical tip portion is integrally formed, and the main rubber elastic body 16 is filled on the inner peripheral side.

  Further, in the present embodiment, the mounting bolt 32 and the first and second positioning projections 34 and 36 projecting from the first mounting plate member 18 are positioned substantially at the center in the width direction of the first mounting plate member 18. The first mounting plate member 18 is arranged substantially in series on a straight line extending in the longitudinal direction.

  As shown in FIG. 2, the first mounting plate member 18 is bolted by a mounting bolt 32 and a mounting nut 40 to the power unit 38 that is one member that is vibration-proof connected by the engine mount 10. It is fixed and can be attached. In particular, in the present embodiment, a pair of engine mounts 10 and 10 are inclined on the left and right sides of the engine 42 of the power unit 38 to support the engine 42 obliquely from below. In FIG. 2, one of the pair of engine mounts 10 and 10 is shown.

  On the other hand, the second mounting plate member 20 is integrally formed with a pair of mounting pieces 44, 44 extending and extending on both sides in the width direction at the intermediate portion in the longitudinal direction. The second mounting plate member 20 is mounted on the vehicle body 46, which is the other member that is anti-vibrated and connected by the engine mount 10, after the pair of mounting pieces 44 and 44 are overlapped with each other. Are fixed by bolts (not shown) that are inserted through through-holes 47 provided in the mounting holes.

  On the other hand, the stopper plate 14 to be assembled to the mount body 12 has the first and second side plate members 50 and 52 attached to the support plate member 48 as shown in FIGS. Have a structure. Further, the support plate member 48 includes a central plate portion 54 having a rectangular flat plate shape that is slightly larger than the first mounting plate member 18. As shown in FIGS. 1 to 5, the central plate portion 54 is attached to the first mounting plate member 18 so as to be in close contact with each other. In the center plate portion 54, bolt insertion holes 56, first and second positions are provided at corresponding positions of the mounting bolt 32, the first and second positioning projections 34, 36 protruding from the first mounting plate member 18, respectively. Two insertion holes 58 and 60 are formed and are respectively inserted.

  Further, the opposing side portions 62 and 62 which are both ends in the longitudinal direction (left and right direction in FIG. 7) of the central plate portion 54 are connected to the second mounting plate member 20 side in the assembled state to the mount body 12. The first and second hanging plate portions 68 and 70 extending so as to rise toward one surface side are integrally formed.

  Each of the first hanging plate portion 68 and the second hanging plate portion 70 includes upper inclined plate portions 68a and 70a that are bent by approximately 30 to 60 degrees from the central plate portion 54, and each upper inclined plate portion. Further bent from the front ends of 68a and 70a, the vertical plate portions 68b and 70b spread substantially at right angles to the central plate portion 54, and further bent by approximately 30 to 80 degrees from the front ends of the respective vertical plate portions 68b and 70b. Thus, lower inclined plate portions 68c and 70c are provided as depression portions that are overhanged and have depression angles θ and θ ′ (see FIG. 7 respectively). As a result, the first and second vertical plate portions 68 and 70 are formed with groove-shaped concave portions 72 and 74 that open inward in the longitudinal direction and extend in the width direction.

  A separate part 76 is attached to the vertical plate part 70b of the second vertical plate part 70. The separate part 76 is provided with a plurality of attachment holes 78 and 80, and one attachment part. A fixing nut 82 is fixed to the use hole 78. Then, by using these mounting holes 78 and 80 and the fixing nut 82, a heat insulator cover or the like, which is a separate part that covers the engine mount 10 and reduces radiant heat from the engine 42, can be attached and fixed later. It is possible.

  Further, both end portions in the width direction of the support plate member 48 (vertical direction in FIG. 7 orthogonal to the opposing direction of the opposing side portions 62, 62) extend toward the second mounting plate member 20 side. The first and second side plate members 50 and 52 are attached. The first and second side plate members 50 and 52 are formed separately from the support plate member 48, are arranged substantially parallel to each other in the width direction, and are fixed to the support plate member 48. Yes. In the present embodiment, the first side plate member 50 and the second side plate member 52 have the same shape, and are constituted by common parts.

  Further, both end portions of the first and second side plate members 50 and 52 in the longitudinal direction are formed in one of the groove-like recess 72 of the first hanging plate portion 68 and the groove-like recess 74 of the second hanging plate portion 70. Each is fitted and fixed. And the opening part of the width direction both sides of the groove-shaped recessed parts 72 and 74 in the 1st and 2nd vertical board part 70 is covered with the 1st and 2nd side plate members 50 and 52. As shown in FIG. In the present embodiment, both end portions in the longitudinal direction of the first and second side plate members 50 and 52 are the fitting portions 84 and 86 extending greatly toward the second mounting plate member 20 side than the intermediate portion. The fitting portions 84 and 86 are fitted in the groove-like concave portions 72 and 74. Then, the fitting portions 84 and 86 are fixed to the upper inclined plate portions 68a and 70a, the vertical plate portions 68b and 70b, and the lower inclined plate portions 68c and 70c with the outer peripheral surfaces being overlapped to be fixed. The first and second side plate members 50 and 52 are secured to a large area.

  By attaching the first and second side plate members 50 and 52 to the support plate member 48 in this way, the first and second hanging plate portions 68 and 70 and the first and second side plate members 50 and 52 are provided. Is formed with a peripheral wall form extending in a skirt shape as a whole. Further, the groove-like recesses 72 and 74 formed in the first and second hanging plate portions 68 and 70 are respectively fitted to the fitting portions 84 and 86 of the first and second side plate members 50 and 52 on both sides in the width direction. The openings of the stopper plate 14 are covered with each other, and the openings are opposed to each other in the longitudinal direction of the stopper plate 14. As a result, the first and second stopper portions 88 and 90 that open toward the inside in the longitudinal direction are provided at both end portions in the opposing direction (longitudinal direction) of the opposing side portions 62 and 62 in the stopper plate 14. And the second hanging plate portions 68 and 70 and the fitting portions 84 and 86 of the first and second side plate members 50 and 52. The first and second stopper portions 88 and 90 are formed into a bag shape that surrounds one of the first and second contact portions 24 and 26 and opens inside in the longitudinal direction. Strength is given.

  The first and second side plate members 50 and 52 are positioned in the width direction when fixed to the support plate member 48. More specifically, a contact protrusion 92 for positioning the first and second side plate members 50 and 52 in the width direction is formed on the central plate portion 54. The contact protrusions 92 are small protrusions that protrude toward the second mounting plate member 20 and are formed at both ends in the width direction of the central plate portion 54 and spaced apart from each other in the longitudinal direction. A plurality are formed. In the present embodiment, the contact projections 92 are respectively formed at both ends in the longitudinal direction of the central plate portion 54, and one contact projection 92 is disposed in the vicinity of the four corners of the central plate portion 54 having a rectangular flat plate shape. ing.

  The contact protrusion 92 of this embodiment is integrally formed on the central plate portion 54 by press working. However, the abutment protrusion can also be formed by welding other members to the central plate portion 54, attaching a fixed rivet, or the like.

  The upper end portion of the first side plate member 50 is brought into contact with the two contact protrusions 92, 92 provided at one end portion in the width direction of the central plate portion 54 from the outside in the width direction, and the width. The upper end portion of the second side plate member 52 is in contact with the two contact protrusions 92, 92 provided at the other end in the direction from the outside in the width direction. Thus, the first and second side plate members 50 and 52 are positioned in the width direction with respect to the support plate member 48 in a temporarily assembled state before being fixed to the support plate member 48. The side plate members 50 and 52 are in contact with two contact protrusions 92 and 92 that are spaced apart in the longitudinal direction, so that the vertical direction (the direction in which the first mounting plate member 18 and the second mounting plate member 20 face each other). ) To prevent the first and second side plate members 50 and 52 from tilting.

  In such a positioning state in the width direction, the fitting portions 84 and 86 of the first and second side plate members 50 and 52 are fitted into the groove-like concave portions 72 and 74 of the first and second hanging plate portions 68 and 70, respectively. As a result, the first and second side plate members 50 and 52 are positioned with respect to the support plate member 48 in the vertical direction in FIG. Further, the tilting of the first and second side plate members 50 and 52 with the longitudinal direction as an axis is also restricted, and the first and second side plate members 50 and 52 are substantially in a predetermined position with respect to the support plate member 48. It is arranged vertically.

  Although not necessarily clear in the figure, the support plate member 48 and the first and second side plate members 50 and 52 are fixed to each other by welding in the above-described positioning state. Thereby, the first and second side plate members 50 and 52 also function as ribs for reinforcement with respect to the support plate member 48, and the central plate portion 54 and the first and second drooping portions that are particularly curved. The deformation rigidity is improved at the connecting portions with the plate portions 68 and 70.

  The stopper plate 14 as described above is assembled to the mount body 12 to constitute the engine mount 10, and a pair of engine mounts 10 and 10 as shown in FIG. The engine mounts 10 and 10 cooperate to support the vibration of the power unit 38 and limit the amount of displacement of the power unit 38 in a buffering manner.

  Further, when the stopper plate 14 is mounted on the mount body 12, the first and second stopper portions 88 and 90 of the stopper plate 14 fixed to the first mounting plate member 18 are attached to the second mounting plate member 20. Around the provided first and second contact portions 24, 26, a predetermined distance is arranged. As a result, the first and second stopper portions 88 and 90 abut against the first and second abutment portions 24 and 26, so that the first attachment plate member 18 and the second attachment plate member 20 are brought into contact with each other. First and second stopper mechanisms for limiting the relative displacement amount are configured.

  In particular, the stopper plate 14 includes first and second stopper portions 88 and 90 having a bag shape including first and second hanging plate portions 68 and 70 and first and second side plate members 50 and 52. The vertical direction of the vehicle (A and B in FIG. 2) and the lateral direction of the vehicle (in FIG. 2) with respect to the first and second contact portions 24 and 26 of the second mounting plate member 20 are formed. C, D) and the vehicle front-rear direction (E, F in FIG. 3), the first and second stopper portions 88, 90 are respectively connected to the first and second contact portions 24. , 26 are opposed to each other at a predetermined distance. Therefore, in the first and second stopper mechanisms including the first and second stopper portions 88 and 90 and the first and second abutting portions 24 and 26, any of the vehicle up / down / left / right and front / rear directions is used. In this case, the stoppers 88 and 90 and the contact parts 24 and 26 have a stopper function for restricting the relative displacement amount based on mutual contact via the first and second buffer rubbers 28 and 30. Thus, a compact and effective stopper mechanism can be realized. In particular, the lower inclined plates 68c and 70c, which are the depressions of the stopper portions 88 and 90, are in contact with the first and second contact portions 24 and 26 from the back surface. The stopper function can be exhibited.

  The central plate portion 54 and the first and second hanging plate portions 68 and 70 are formed by bending a metal plate with a press. It is possible to prevent the thickness of the plate portions 68 and 70 from being reduced, and to ensure load resistance in the vertical and horizontal directions of the vehicle. Further, since the first and second side plate members 50 and 52 are separated from the support plate member 48 and are fixed afterward, the thicknesses of the first and second side plate members 50 and 52 are also set with high accuracy. Thus, sufficient load resistance is ensured in the longitudinal direction of the vehicle.

  In addition, the first and second side plate members 50 and 52 are brought into contact with the plurality of contact projections 92 protruding from the central plate portion 54 in the width direction, and the fitting portions 84 and 86 are suspended. By being fitted into the groove-like recesses 72 and 74 of the plate portions 68 and 70, the plate portions 68 and 70 are positioned with respect to the support plate member 48. Therefore, even if the support plate member 48 and the first and second side plate members 50 and 52 are separately fixed later, the first and second stopper portions 88 and 90 can be stably formed. The desired stopper function can be obtained.

  In particular, in the present embodiment, two abutting protrusions 92 and 92 are formed at both end portions in the longitudinal direction for each end in the width direction of the central plate portion 54, and the first and second The side plate members 50 and 52 are in contact with the contact protrusions 92 and 92 at both ends in the longitudinal direction. Therefore, the first and second side plate members 50 and 52 can be effectively positioned with respect to the support plate member 48 with few contact protrusions 92.

  In addition, the first and second side plate members 50 and 52 are fitting portions 84 and 86 in which both end portions in the longitudinal direction protrude largely toward the second mounting plate member 20 side than the intermediate portion. In addition, an increase in the weight of the stopper plate 14 is suppressed while securing a large area for fixing the second side plate members 50 and 52 to the support plate member 48 and increasing the load resistance of the stopper portions 88 and 90.

  By the way, in order to exhibit the multi-directional stopper function as described above, the mount body provided with the first and second contact portions 24 and 26 having a longitudinal dimension LA of the downward opening portion of the stopper plate 14. 12 is smaller than the longitudinal dimension LB in FIG. Therefore, when the stopper plate 14 is assembled to the mount body 12, the stopper plate 14 has one opening end in the longitudinal direction as shown in FIGS. 12 (a) to 12 (d) in sequence. The tip of the lower inclined plate portion 68c of the first stopper portion 88 is inserted inward from the first abutting portion 24 of the second mounting plate member 20, and the position is set as a substantially rotational center α to the stopper. The other side in the longitudinal direction of the plate 14 is gradually rotated from the inclined state so as to be superimposed on the first mounting plate member 18. In other words, when the state in which the stopper plate 14 is superimposed on the first mounting plate member 18 is used as a reference, the first insertion of the stopper plate 14 with respect to the first mounting plate member 18 around the rotation center α. Tilt in the direction of lifting the hole 58 side is allowed.

  The assembly process of the stopper plate 14 to the first mounting plate member 18 accompanied by the tilting rotation includes the mounting bolt 32 provided on the first mounting plate member 18, the first and second positioning projections 34, 36 and a specific structure of the bolt insertion hole 56 and the first and second insertion holes 58 and 60 in the central plate portion 54 of the stopper plate 14 through which they are inserted.

  That is, in the first mounting plate member 18, the first positioning protrusion 34 is provided on the side far from the tilting rotation center α of the stopper plate 14 with respect to the mounting bolt 32, and the stopper plate 14 is tilted. A second positioning projection 36 is provided on the side close to the rotation center α.

  On the other hand, in the stopper plate 14, the first insertion hole 58 is formed in such a size that it can be fitted over the entire circumference of the outer peripheral surface of the first positioning projection 34 and exert a positioning action on each other. In addition, the second insertion hole 60 can be engaged with the second positioning projection 36 in the width direction (vertical direction in FIG. 8) of the stopper plate 14 orthogonal to the tilting rotation direction to exert a positioning action. The second positioning projection 36 is formed with a large play dimension so that the second positioning projection 36 is allowed to move in the second insertion hole 60 in a direction perpendicular to the direction (the left-right direction in FIG. 8). Further, the bolt insertion hole 56 can engage with the mounting bolt 32 in the width direction of the stopper plate 14 and exert a positioning action in the width direction of the stopper plate 14, as in the second insertion hole 60. In the longitudinal direction, the mounting bolt 32 is formed with such a large play dimension that it is allowed to move within the bolt insertion hole 56.

  In the present embodiment, the first insertion hole 58 has a circular shape with an inner diameter dimension slightly larger than the maximum outer diameter dimension of the first positioning protrusion 34. The second insertion hole 60 has an oval shape having a minor axis dimension slightly larger than the maximum outer diameter dimension of the second positioning projection 36 and a major axis dimension more than twice the maximum outer diameter dimension. It is said that. On the other hand, the bolt insertion hole 56 has an elliptical shape having a minor axis dimension slightly larger than the maximum outer diameter dimension of the mounting bolt 32 and a major axis dimension more than twice the maximum outer diameter dimension.

  Accordingly, the first mounting plate member with respect to the bolt insertion hole 56 of the stopper plate 14 that is inclined with respect to the first mounting plate member 18 in the steps up to FIGS. The 18 mounting bolts 32 can be inserted in a relatively inclined state. 12C to 12D, the second positioning protrusion 36 of the first mounting plate member 18 is similarly inserted into the second insertion hole 60 of the stopper plate 14. It is possible to make it.

  Then, as shown in FIG. 12D, the lower end of the lower inclined plate portion 70c in the second stopper portion 90 of the stopper plate 14 is the protruding portion of the second contact portion 26 in the mount body 12. When the stopper plate 14 is tilted and rotated until it exceeds, the region of the minimum dimension LA between the first and second stopper portions 88 and 90 on the stopper plate 14 is changed to the first and second contacts on the second mounting plate member 20. The position of the maximum dimension LB of the contact portions 24 and 26 is exceeded. Therefore, the stopper plate 14 can be relatively displaced on the first mounting plate member 18 of the mount body 12 in a substantially plane direction. Further, since the second insertion hole 60 through which the second positioning protrusion 36 and the mounting bolt 32 are inserted and the bolt insertion hole 56 have a long hole shape, The mounting bolt 32 is allowed to move within the insertion holes 60 and 56.

  Accordingly, as shown in FIG. 12D, after the tilting and rotating operation of the stopper plate 14 is finished and the stopper plate 14 is made substantially parallel to the first mounting plate member 18, there is provisional displacement. Even when the stopper plate 14 is relatively displaced relative to the first mounting plate member 18, the first positioning protrusion 34 is aligned and fitted into the first insertion hole 58. Can do. As a result, as shown in FIGS. 1 to 5, the stopper plate 14 is assembled in close contact with the first mounting plate member 18.

  In the assembled state shown in FIG. 2 and the like, the first positioning projection 34 is fitted into the first insertion hole 58 over the entire circumference, so that the first positioning projection 34 is fitted at the first fitting position. The mounting plate member 18 and the stopper plate 14 are accurately positioned. At the same time, the second positioning projection 36 is fitted and locked in the plate width direction, so that the first positioning projection 36 and the first insertion hole 58 have a first circumferential direction around the fitting center point. The mounting plate member 18 and the stopper plate 14 are positioned. Based on the synergistic positioning action of the first and second positioning protrusions 34, 36 and the first and second insertion holes 58, 60, the first mounting plate member 18 and the stopper plate 14 are overlapped. They are positioned accurately and stably in all directions of the mating surfaces to prevent mutual displacement. In particular, the second positioning protrusion 36 is formed at a protruding height that penetrates the stopper plate 14 and is inserted and locked in a locking hole formed at a corresponding position of the power unit 38. 36, the first mounting plate member 18 is also positioned with respect to the power unit 38.

  In particular, the second positioning projection 36 is provided on the opposite side of the first positioning projection 34 with the mounting bolt 32 in between, so that the first positioning projection 34 and the second positioning projection 36 are separated from each other. Can be set sufficiently large. Therefore, the positioning accuracy and strength of the first mounting plate member 18 and the stopper plate 14 based on the cooperative action of the first and second positioning protrusions 34 and 36 are further improved.

  In the present embodiment, the mounting bolt 32 and the second positioning projection 36 are arranged in series, and each has a fitting and locking action with respect to the bolt insertion hole 56 and the second insertion hole 60. Therefore, the circumferential positions of the first positioning protrusion 34 and the first insertion hole 58 are defined. Thereby, the strength and reliability of the positioning action by the first positioning protrusion 34 and the first insertion hole 58 can be further improved.

  Further, the first positioning protrusion 34 of the present embodiment has a larger separation distance from the rotation center α of the stopper plate 14 than the second positioning protrusion 36, and the protrusion of the first positioning protrusion 34. The height is smaller than that of the second positioning protrusion 36. From this, interference of the first positioning projection 34 can be effectively avoided with respect to the tilting operation of the stopper plate 14 as shown in FIG. 12, and the first positioning projection 34 has the first insertion hole. By being fitted over the entire circumference with respect to 58, a highly accurate positioning action can be realized.

  2, the stopper plate 14 is firmly positioned and fixed with respect to the first mounting plate member 18 by the tightening force of the mounting bolt 32 and the mounting nut 40. The stopper plate 14 is substantially integrated with the first mounting plate member 18 based on the tightening force, and the stopper function can be stably exhibited.

  As mentioned above, although embodiment of this invention has been explained in full detail, this invention is not limited by the above-mentioned specific description. For example, the specific shape, the number of sizes formed, the arrangement in the longitudinal direction, etc. of the contact protrusions can be changed as appropriate, and are limitedly interpreted by the specific description of the embodiment. It is not a thing.

  Further, the first side plate member and the second side plate member may have different shapes from each other, and are not necessarily constituted by common parts.

  In addition, the specific shapes and structures of the first and second stopper portions and the first and second contact portions are appropriately changed according to required stopper characteristics such as the input direction of the load and the magnitude of the input load. Is possible. Furthermore, for example, even when the depression portion is set only in one of the first and second vertical plate portions constituting the first and second stopper portions, the first and second side plate members 50 and 52 are provided. Of the first and second side plate members 50 and 52 with respect to the one vertical plate portion having the depression portion, and the first and second side plate members with respect to the support plate member. The side plate member can be effectively positioned.

  Moreover, the mounting method of the stopper plate 14 with respect to the mount main body 12 shown to the said embodiment is an illustration to the last, For example, in the structure where the depression part was set only in one stopper part, it is a 1st attachment plate member. On the other hand, the stopper plate may be assembled without requiring tilting rotation.

  Furthermore, the specific structure of the mount body is not limited. For example, a fluid-filled vibration isolator having an incompressible fluid sealed therein can be employed as the mount body.

10: engine mount (vibration isolation device), 12: mount main body, 14: stopper plate, 16: main rubber elastic body, 18: first mounting plate member, 20: second mounting plate member, 24: first Abutting portion, 26: second abutting portion, 32: mounting bolt, 34: first positioning projection, 36: second positioning projection, 38: power unit (one member to be vibration-proof coupled), 46: Vehicle body (the other member to be vibration-proof connected), 48: support plate member, 50: first side plate member, 52: second side plate member, 54: center plate portion, 56: bolt insertion hole, 58: first One insertion hole, 60: second insertion hole, 62: opposite side portion 68: first hanging plate portion, 70: second hanging plate portion, 68c, 70c: lower inclined plate portion (a depression portion), 84, 86: fitting part, 88: first stopper part, 90: second stopper part, 92: contact Cause

Claims (5)

The first mounting plate member and the second mounting plate member attached to each one of the vibration-proof connected members are opposed to each other and are connected by a main rubber elastic body disposed between the opposing surfaces. A stopper plate is attached to the first mounting plate member so that the first and second stopper portions extend from the opposing side portions of the stopper plate to the second mounting plate member side. And the first and second stopper portions abut on the first and second abutting portions provided on the second mounting plate member, thereby the first mounting plate member and the first stopper portion. In the vibration isolator provided with the first and second stopper mechanisms for limiting the relative displacement amount with the second mounting plate member,
The stopper plate is fixed to the support plate member attached to the first attachment plate member, and the second attachment plate fixed to both ends of the support plate member in the width direction perpendicular to the opposing direction of the opposing side portion. The first and second side plate members extending to the member side, and
The support plate member is overlapped with the first mounting plate member and attached to the central plate portion, and extends from the opposite side portion of the central plate portion to the second mounting plate member side, and the first and second While comprising the first and second hanging plate portion constituting the stopper portion of
A plurality of contact protrusions projecting toward the second mounting plate member are formed at both ends in the width direction of the central plate portion of the support plate member at a predetermined distance in the opposing direction of the opposing side portion. And at least one of the first hanging plate portion and the second hanging plate portion in the support plate member is provided with a depression portion that comes into contact with the first and second contact portions from the back side, The first and second side plate members are brought into contact with each of the corresponding contact projections in the width direction, and are fitted into the vertical plate portion having the depression portions and positioned with respect to the support plate member. An anti-vibration device characterized in that   Both the first and second hanging plate portions have the depression portions, and both end portions of the first and second side plate members are fitted into the first and second hanging plate portions. The vibration isolator according to claim 1, which is fixed.   The end portions of the first and second side plate members that are fitted and fixed to the first and second hanging plate portions are more than the second portion than the intermediate portion of the first and second side plate members. The vibration isolator according to claim 1 or 2, which extends greatly toward the mounting plate member.   The anti-vibration device according to any one of claims 1 to 3, wherein the contact protrusion is formed at both end portions of the central plate portion in the facing direction of the facing side portion. The first mounting plate member is provided with a mounting bolt protruding outward, and the first mounting plate member is provided with the mounting bolt in a direction opposite to the opposing side portion of the stopper plate. A first positioning projection for positioning the stopper plate with respect to the first mounting plate member, and a projecting height larger than that of the first positioning projection. A second positioning projection for positioning the mounting plate member with respect to one of the vibration-proof connected members, and
Bolt insertion holes through which the mounting bolts are inserted are formed in the central plate portion of the stopper plate, and the first and second positioning protrusions and the respective positioning projections on both sides of the bolt insertion holes are formed in the central plate portion. First and second insertion holes are formed at corresponding positions, and the first positioning projections are fitted to the first insertion holes over the entire circumference. Both the hole and the second insertion hole have an elongated hole structure extending in the opposing direction of the opposing side portion of the stopper plate, and the first plate of the stopper plate with respect to the first mounting plate member 2. A tilt in the direction of lifting the insertion hole side of the first insertion hole is allowed, and the second positioning projection is positioned with respect to the second insertion hole in the width direction. The vibration isolator of any one of -4.

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