JP2009001085A - Rubber cushion stopper for railway vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber cushion stopper for a railway vehicle showing a soft initial shock when the stopper functions, providing an occupant in a vehicle compartment with an excellent comfortable riding feeling, capable of excellently restricting a lateral displacement of a vehicle body while effectively increasing a deformation resistance under application of a high load and additionally providing an excellent durability. <P>SOLUTION: The rubber cushion stopper 10 for use in restricting a lateral motion of a railway vehicle body is constituted of a rubber stopper body 12 and a metallic plate 14. The metallic plate 14 is provided with bulged-out portions 22 and at the same time the rubber stopper body 12 is provided with concave portions 26 caved toward the bulged-out portions and annular protrusions 28 around the concave portions 26 in advance. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an anti-vibration rubber stopper that is interposed between a vehicle body and a bogie of a railway vehicle and restricts left-right movement of the vehicle body by a stopper action when the vehicle body moves left and right.

Conventionally, in a railway vehicle, an anti-vibration rubber stopper is interposed between the vehicle body and the bogie, and when the vehicle body rolls, that is, moves left and right due to centrifugal force acting on the vehicle body when traveling on a curve, etc. The stopper action of the stopper regulates the displacement of the vehicle body to prevent the vehicle body from shaking significantly.
FIG. 8 shows a specific structural example of the anti-vibration rubber stopper and the peripheral portion.

In the figure, reference numeral 200 denotes a vehicle body, and 202 denotes a carriage frame (cart), which are connected to each other by a connecting device 204 so as to be capable of relative displacement.
The connecting device 204 has a center pin 206 and a cylindrical body 208, which are fixed in a fitted state.
Reference numeral 210 denotes a damper.

  The cart frame 202 is provided with an anti-vibration rubber stopper 214 via a bracket 212, while an abutment arm 216 is provided on the coupling device 204 side so as to face the anti-vibration rubber stopper 214, so that the vehicle travels in a curve. When a centrifugal force is sometimes applied to the vehicle body 200, the anti-vibration rubber stopper 214 and the abutment arm 216 come into contact with each other, and the lateral movement of the vehicle body 200 is restricted by the stopper action of the anti-vibration rubber stopper 214 at that time. It is like that.

  FIG. 9 (a) shows an example of this type of anti-vibration rubber stopper conventionally used (disclosed in Patent Document 1 below). The anti-vibration rubber stopper 214 is made of a block-like rubber elastic body. A rubber stopper main body 218 and a metal plate 220 which is fixed to the rubber stopper main body 218 and holds the rubber stopper main body 218 and also serves as an attachment member.

Here, the rubber stopper main body 218 is provided with a straight through portion (hollow portion) 222.
Since the rubber stopper main body 218 is provided with such a straight portion 222, the rubber stopper main body 218 is deformed as a whole so as to first fill the straight portion 222 when the stopper is operated.
Therefore, the anti-vibration rubber stopper 214 of this example provided with the straight portion 222 has a soft spring characteristic in the initial stage of the stopper action, and the spring characteristic becomes hard in the deformation region after the straight portion 222 is buried, and the deformation resistance is low. The large displacement of the vehicle body is regulated based on the deformation resistance increased when a large load is applied to the vehicle body 200.

However, in the case of the anti-vibration rubber stopper 214 in which the initial spring characteristic at the time of stopper action is softened by such a through-pick-up portion 222, depending on the input load to the vehicle, the edge of the edge portion 222 at the time of stopper action, particularly A in the figure. A large stress is generated locally in the portion indicated by, and cracks are liable to be generated therefrom, which may deteriorate the durability.
Further, in the case of this anti-vibration rubber stopper 214, when the displacement of the left and right movement of the vehicle body 200 increases and the load acting on the anti-vibration rubber stopper 214 becomes large, that is, the displacement restricting force at the time of inputting a large load is not always the case. There was a problem that it could not be obtained sufficiently.
This type of anti-vibration rubber stopper is also disclosed in Patent Document 2 below.

On the other hand, there is one disclosed in Patent Document 3 below as a softening of the spring characteristics at the initial stage of the stopper action without depending on the straight portion 222.
FIG. 9B shows a specific example.
In the anti-vibration rubber stopper 226 shown in the figure, the rubber stopper main body 218 has a mountain-shaped cross section so that the tip end side becomes thinner toward the counterpart member.

In this anti-vibration rubber stopper 226, at the initial stage of the stopper action, the rubber stopper main body 218 makes contact with the mating member at a narrow portion on the tip side, that is, a portion with a small contact area (pressure receiving area), so that the initial contact is softened. The contact area (pressure receiving area) of the rubber stopper body 218 to the mating member gradually increases as the mating member, that is, the displacement of the left and right movement of the vehicle body increases, and the deformation resistance is increased. Increase regulatory power.
In the anti-vibration rubber stopper 226 shown in FIG. 9 (b), it is conceivable to provide a metal stopper inside the rubber of the anti-vibration rubber stopper 226 in order to cope with displacement restriction at a heavy load. When the rubber portion of the vibration-proof rubber stopper is reduced in thickness and combined with the small pressure receiving area, a large strain is generated in the rubber portion. Therefore, durability cannot be ensured, and in some cases, there is a concern that the metal stopper and the anti-vibration rubber stopper peel off.

Anti-vibration rubber stoppers for railcars that restrict the lateral movement of the vehicle body are required to reliably restrict the displacement of the vehicle body to a certain level or less, so that the metal stopper part is finally applied directly to the counterpart member. Some are designed to regulate displacement.
FIG. 10 shows an example of this as a comparative example.
The anti-vibration rubber stopper 228 shown in the figure is provided with a metal stopper portion 224 integrally projecting on a metal plate 220 that holds the rubber stopper body 218, and the rubber stopper body 218 is the only counterpart at the initial stage when the stopper is operated. A stopper is applied to the side member, and when the displacement reaches the limit, the metal stopper 224 is applied to the counterpart member to restrict further displacement.

However, in the case of the anti-vibration rubber stopper 228 as a comparative example shown in FIG. 10, since the rubber stopper body 218 hits the mating member with a wide contact area (pressure receiving area) from the beginning of the stopper action, the deformation at that time is reduced. In addition, while the durability can be improved, there is a problem that the rubber stopper body 218 does not softly abut against the counterpart member at the initial stage of the stopper operation, and the initial contact is hard.
Thus, when the initial contact at the time of the stopper action becomes hard, an impact force is generated and the ride comfort of the occupant in the vehicle body 200 is deteriorated.
On the other hand, in this anti-vibration rubber stopper 228, if the spring characteristics of the rubber stopper main body 218 are softened, the metal stopper and the mating member will always come into contact with each other at a low load input, and there is a problem in the durability of the metal stopper 224 and the mating member. May occur.

  In the anti-vibration rubber stopper, the initial contact at the time of the anti-vibration action is softened, while at the time of heavy load, the deformation resistance is effectively increased to suppress the displacement of the vehicle body 200 and to ensure that the maximum displacement is below the limit. It is required to be able to regulate and have good durability, but the softness and durability at the initial stage at the time of stopper action are contrary to each other, and it is necessary to secure both in a limited space. It was a difficult task.

Utility Model Registration No. 2571065 Japanese Patent Laid-Open No. 11-208468 Japanese Patent Publication No. 7-84170

  The present invention is based on the above circumstances, and the initial contact at the time of the stopper action is soft, so that the ride comfort of the passenger in the vehicle interior is good, and the deformation resistance is effectively increased at the time of a heavy load to increase the vehicle body. The purpose of this invention is to provide an anti-vibration rubber stopper for a railway vehicle that is capable of satisfactorily regulating the displacement in the left-right direction of the railway vehicle and that has excellent durability.

  Thus, the first aspect of the present invention is an anti-vibration rubber stopper that is interposed between the vehicle body and the bogie of the railway vehicle and regulates the left-right movement of the vehicle body by a stopper action when the vehicle body moves left-right. A rubber stopper main body made of a block-like rubber elastic body, and a metal plate that is fixed to the rubber stopper main body and holds the rubber stopper main body and also serves as an attachment member. The main body side surface has a bulging portion that bulges in a state of being embedded in the rubber stopper main body, and the rubber stopper main body serves as a contact surface to the mating member when the stopper is operated. A concave portion in a form of being recessed from the surface opposite to the surface fixed to the metal plate toward the bulging portion of the metal plate is provided in a state facing the bulging portion in the left-right direction, The metal pre-sound around the recess An annular projecting portion projecting to the opposite side of the groove is formed, and the annular projecting portion is provided in a state where at least the outer peripheral side portion is located on the outer peripheral side with respect to the bulging portion. To do.

  According to a second aspect of the present invention, in the first aspect of the present invention, the annular protrusion is provided with an air bleeding groove that communicates between the inner concave portion and the outside so as to cross the annular protrusion.

  According to a third aspect of the present invention, in the second aspect of the present invention, the annular projecting portion has a continuous shape in the circumferential direction except for the air bleeding groove.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the rubber stopper main body and the metal plate are integrally fixed by vulcanization adhesion.

Effects and effects of the invention

  As described above, according to the first aspect of the present invention, the anti-vibration rubber stopper is composed of the rubber stopper main body made of a block-like rubber elastic body and the metal plate serving also as an attachment member. A bulging part that is embedded in the rubber stopper body is provided on the surface on the main body side, while the rubber stopper body faces the bulging part from the surface opposite to the metal plate, which is a contact surface to the mating member. A recess having a concave shape is provided in a state of facing the bulging portion, and an annular protrusion that protrudes on the opposite side of the metal plate is formed around the recess, and the annular protrusion is at least on the outer peripheral side. The portion is provided in a state of being located on the outer peripheral side with respect to the bulging portion.

In the anti-vibration rubber stopper according to the first aspect, the annular protrusion protrudes from the other part around the recess, and at the initial stage of the stopper action, the annular protrusion abuts against the mating member to be deformed. It works.
Therefore, the initial contact at the time of the stopper action can be softened.

In addition, at least the outer peripheral portion of the annular protrusion is provided in a state positioned on the outer peripheral side of the bulging portion, so that the rubber stopper main body is thicker than the portion where the annular protrusion is formed (vehicle left and right). In addition to the effect of the annular protrusion alone (the effect of preferentially contacting the annular protrusion with the mating member to facilitate the deformation of the rubber) Due to the low spring constant due to the thickness, the initial contact at the time of the stopper action can be more effectively softened.
Thereby, the impact at the beginning of the stopper action can be reduced as much as possible, and the ride comfort of the occupant inside the vehicle body can be improved.

  From this state, when the horizontal displacement of the counterpart member, that is, the vehicle body, increases, the rubber stopper main body including the bottom surface of the concave portion comes into contact with the counterpart member at a certain point, In this case, the deformation resistance of the rubber stopper body suddenly increases and the curve of the spring characteristic curve suddenly rises, and the displacement regulating force against the counterpart member is rapidly increased to effectively suppress the displacement.

  When the displacement further increases, the bulging portion (metal stopper portion) finally provided on the metal plate comes into contact with the mating member via the portion between the bottom surface bulging portion of the recess in the rubber stopper body. Here, further displacement of the counterpart member, that is, the vehicle body is prevented, and the vehicle body is regulated within a preset maximum allowable (limit) displacement.

The anti-vibration rubber stopper of claim 1 is also excellent in durability.
The anti-vibration rubber stopper according to claim 1 is soft at the initial stage of the stopper action as described above and can make a stopper action by hitting the counterpart member. At this time, the entire annular protrusion provided around the recess is on the opposite side. Since it hits the mating member with a wide contact area or pressure receiving area when hitting the member, and it hits the mating member at a thick part, it acts as a stopper, so the force applied per unit area at the time of stopper action is effective In addition to the fact that the rubber thickness can be reduced, the distortion of the annular protrusion can be reduced due to the thick rubber, and these two effects can ensure a high durability while ensuring a soft stopper contact. it can.

In the present invention, the annular projecting portion can be provided in a shape that is continuous in the circumferential direction except for an air vent groove described later (claim 3).
In this way, the rubber stopper body can be brought into contact with the counterpart member with a wider contact area and pressure receiving area.

However, if the entire annular protrusion is formed in an annular shape that is continuous in the circumferential direction, air is trapped in the inner portion of the annular protrusion, that is, inside the recess, when the rubber stopper body hits the counterpart member, As a result, there is a risk that an abnormal noise may be generated at the time of contact.
However, according to the second aspect of the present invention, it is possible to prevent such an inconvenience by providing the air bleeding groove so as to cross the annular protrusion.

In the present invention, the rubber stopper main body and the metal plate can be fixed together by vulcanization bonding (Claim 4).
In this way, the rubber stopper main body and the metal plate can be manufactured separately, and the required manufacturing process of the anti-vibration rubber stopper can be reduced compared to the case where they are fixed together by bonding later, thereby reducing the cost. be able to.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes an anti-vibration rubber stopper of the present embodiment that is interposed between a vehicle body and a bogie of a railway vehicle and restricts left-right movement of the vehicle body by a stopper action, and is a rubber made of a block-like rubber elastic body. It has a stopper main body 12 and a metal plate 14 serving as an attachment member that is fixed to and holds the rubber stopper main body 12.
Here, the rubber stopper body 12 and the metal plate 14 are integrally fixed by vulcanization adhesion.

The metal plate 14 has an extending portion 16 extending rightward from the rubber stopper main body 12 in the drawing, and a mounting hole formed by a female screw hole in the extending portion 16 and a portion hidden by the rubber stopper main body 12. 18 and 20 are provided (see FIG. 2B).
The metal plate 14 has a bulging portion (metal stopper portion) 22 bulging upward in the drawing on the upper surface, that is, the surface on the rubber stopper main body 12 side in FIG. 2, and this bulging portion 22 is a rubber. It is embedded in the stopper body 12.
Here, the bulging portion 22 has a substantially square shape in each of the cross-sectional shapes of the transverse section and the longitudinal section, and the upper surface in the drawing is a flat surface.
However, the protruding peripheral edge and the root peripheral edge both have a circular arc surface 24 in cross section.
Further, the bulging portion 22 has a quadrangular planar shape.

On the other hand, the rubber stopper main body 12 is recessed toward the bulging portion 22 of the metal plate 14 from a surface opposite to the fixing surface with the metal plate 14 which becomes a contact surface with the counterpart member when the stopper is operated. The concave portion 26 in the form is provided at the central portion in plan view.
Here, as shown in FIGS. 2 and 3, the concave portion 26 is provided in a state of facing the bulging portion 22 in the vertical direction in the drawing (left and right direction when attached to the vehicle).

As shown in FIG. 1, the rubber stopper main body 12 as a whole has a quadrangular prism shape, and an annular protrusion that protrudes upward in the drawing so as to surround the recess 26, that is, on the opposite side to the metal plate 14. A portion 28 is formed.
Here, the annular projecting portion 28 is provided in a form having a uniform width and continuous in the circumferential direction.
Therefore, this annular protrusion 28 also has a quadrangular shape in plan view.
The annular protrusion 28 has a flat top surface and is formed with the same protrusion height over the entire circumference.

The annular projecting portion 28 has an outer surface that is perpendicular to the metal plate 14, and the inner peripheral surface on the concave portion 26 side is recessed toward the bottom surface of the concave portion 26 as it is lowered downward in the figure. It is set as the inclined surface 30 which approaches the center side.
Further, the annular protrusion 28 is provided with an air vent groove 32 that communicates the recess 26 with the outside at the center position of the pair of long side portions so as to cross the annular protrusion 28.
Here, the bottom surface of the air bleeding groove 32 is flush with the bottom surface of the recess 26. That is, the depth of the air bleeding groove 32 is the same as the depth of the recess 26.

As shown in FIGS. 2 and 3, the rubber stopper main body 12 has an outer shape in plan view larger than the outer shape of the bulging portion 22, and the outer peripheral portion of the annular protrusion 28 is It is located on the outer peripheral side with respect to the bulging portion 22.
Accordingly, the rubber stopper main body 12 has a substantially H-shaped cross section in all cross sections including the cross sectional shape shown in FIG. 2 and the vertical cross sectional shape shown in FIG. 3 (except for the cross section at the air vent groove 32). .

Particularly in the outer peripheral portion than the bulging section 22, it is h ₀ (thickness in the lateral direction in an assembled state of the vehicle) vertically thick in the figure forms a thick.
Specifically, the thickness h ₀ of this portion is the thickness h ₂ of the portion between the thickness (projection height) h ₁ of the annular protrusion 28 in the same direction and the bottom surface of the bulging portion 22 and the recess 26. If, which is bulged height of the bulging portion 22, i.e. the thickness h ₃ and the thickness h ₀ of the sum of the parts of the bulged portion 22 an outer peripheral side.

The annular protrusion 28 has an outer peripheral portion located on the outer peripheral side of the bulging portion 22 over substantially half of the width dimension in plan view.
However, as a result of the protruding portion 22 having an arcuate surface 24 on the protruding side, the rubber stopper main body 12 is thicker in the vertical direction in the figure than h ₁ + h _{2 in} the upper portion of the arc surface 24. It is.

FIG. 4 shows a change in the state of the anti-vibration rubber stopper 10 of this embodiment when the stopper is operated.
FIG. 4 (I) shows a state before the stopper action is performed. Naturally, at this time, the rubber stopper body 12 is not deformed at all.
FIG. 4 (II) shows the initial state of the stopper action. At this time, the annular projecting portion 38 alone contacts the mating member, and the stopper action is performed by elastic deformation of the annular projecting portion 28.

At this time, since the annular protrusion 28 is deformed by itself and acts as a stopper, the shape of the annular protrusion 28 due to the projecting shape itself, that is, the high deformability of the annular protrusion 28 itself, softly forms the mating member. hit in addition to forming a stopper action, part rubber stopper body 12 forms an annular projection 28, in detail, especially thick thickness h ₀ of the outer peripheral portion, by the spring constant is soft low, when the stopper action The initial hit can be made even softer.
Thereby, the impact when the vibration isolating rubber stopper 10 hits the mating member can be reduced as much as possible, and the ride comfort of the passenger inside the vehicle body can be improved.

  When the displacement of the mating member, that is, the vehicle body further increases from this state, the entire abutting surface of the rubber stopper body 12 including the bottom surface of the recess 26 comes into contact with the mating member (FIG. 4 (III)). Here, the deformation resistance of the rubber stopper main body 12 suddenly increases, the curve of the spring characteristic curve in the anti-vibration rubber stopper 10 suddenly rises, and the deformation restraining force on the counterpart member increases rapidly, and the displacement is effective. Suppress it.

  Further, from this state, when the displacement further increases as shown in FIG. 4 (IV), the bulging portion 22 finally provided on the metal plate 14 becomes the bulging portion 22 and the concave portion 26 in the rubber stopper body 12. It will be in the state which contacted the other party member via the part between bottoms, and the further displacement of a vehicle body is blocked here, and the displacement is controlled within the set maximum displacement.

FIG. 6 shows the spring characteristic (load-deflection characteristic diagram) of the vibration isolating rubber stopper 10 according to the present embodiment in comparison with that of the anti-vibration rubber stopper 228 of the comparative example shown in FIG.
As shown in the figure, the spring characteristic curve A of this embodiment has a soft spring characteristic with a smaller load under the same displacement at the beginning of the stopper action than the spring characteristic curve B of the comparative example. On the other hand, as the displacement increases, the rise of the spring characteristic curve suddenly becomes stiff and the spring characteristic becomes harder. When the displacement exceeds a certain displacement, the anti-vibration rubber stopper 10 of the present embodiment is compared with the comparative example. The spring characteristics become stiff.

In this way, the spring characteristics suddenly become stiff from the middle of the entire upper surface (upper surface in the figure) including the bottom surface of the recess 26 when the state shown in FIG. 4 (II) changes to the state shown in (III). per rubber stopper main body 12 and the mating member, located between the subsequent section of the thickness h ₂ at the bulge portion 22 shown in FIG. 2 (a) metal plate 14, i.e. between the bottom surface and the bulge portion 22 of the recess 26 This is because the thin rubber part to be compressed is compressed.

Note that the inflection point indicated by X in the spring characteristic curve A in FIG. 6 represents the point at which the counterpart member hits the bottom surface of the recess 26 of the rubber stopper body 12 and the spring characteristic changes rapidly from there. .
Further, (II), (III), and (IV) in FIG. 5 represent the load-deflection relationship during deformation after (II), (III), and (III) in FIG. 4, respectively. In these figures, the part surrounded by a round dotted line is the corresponding part.

The anti-vibration rubber stopper 10 of this embodiment is also excellent in durability.
The anti-vibration rubber stopper 10 of the present embodiment is soft at the initial stage of the stopper action and can hit the counterpart member to perform the stopper action. At this time, the entire annular protrusion 28 provided around the recess 26 is the counterpart member. Because it hits the mating member with a wide contact area, that is, a pressure receiving area, and hits the mating member at a thick part, it acts as a stopper, so the force applied per unit area at the time of stopper action is effectively In addition to being able to be reduced, the rubber thickness can be reduced by reducing the distortion of the annular protrusion, and by these two effects, it is possible to ensure high durability while ensuring a soft stopper contact. it can.

  In this embodiment, since the annular protrusion 28 is provided in a circumferentially continuous shape except for the air vent groove, the rubber stopper body 12 can be brought into contact with the counterpart member with a wider contact area and pressure receiving area. In addition, since the air bleeding groove 32 is provided so as to cross the annular protrusion 28, it is possible to effectively prevent noise generated due to air trapped inside the concave portion 26 at the time of contact. it can.

  In the present embodiment, since the rubber stopper body 12 and the metal plate 14 are integrally fixed by vulcanization adhesion, the rubber stopper body 12 and the metal plate 14 are manufactured separately and later bonded together. Compared to the case of fixing, it is possible to reduce the required manufacturing process of the anti-vibration rubber stopper 10 and to reduce the cost.

Although the embodiments of the present invention have been described in detail above, these are merely examples.
For example, the shape of the rubber stopper main body 12 exemplified above is merely an example, and this is, for example, a cylindrical shape, a hexagonal column shape, a triangular prism shape as shown in FIG. 7, or an elliptical column as shown in (D). It can be formed into various other shapes.
In addition, this invention can be comprised in the form which added the various change in the range which does not deviate from the meaning.

It is the figure which showed the vibration proof rubber stopper which is one Embodiment of this invention. (A) It is an AA sectional view in Drawing 1 (B). (B) It is the II sectional drawing in FIG.1 (B). FIG. 2 is a cross-sectional view of Wu in FIG. It is action | operation explanatory drawing of the vibration isolating rubber stopper of the embodiment. It is the figure showing the relationship of the load-deflection at the time of each stopper effect | action of FIG. It is the figure which showed the spring characteristic curve of the vibration proof rubber stopper of the embodiment with the comparative example. It is the figure which showed the principal part of each other embodiment of this invention. It is the figure which showed an example of the anti-vibration rubber stopper and its peripheral part in a railway vehicle. It is the figure which showed an example of the conventional anti-vibration rubber stopper. It is the comparative example figure which showed the vibration proof rubber stopper different from FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Anti-vibration rubber stopper 12 Rubber stopper main body 14 Metal plate 22 Bumping part 26 Recessed part 28 Annular protrusion part 32 Air vent groove

Claims (4)

A rubber stopper made of a block-like rubber elastic body, which is interposed between a vehicle body and a carriage of a railway vehicle and restricts the left-right movement of the vehicle body by a stopper action when the vehicle body moves left and right. A main body and a metal plate that is fixed to the rubber stopper main body and holds the rubber stopper main body, and also serves as an attachment member;
The metal plate has a bulging portion that bulges in a state of being embedded in the rubber stopper body on the surface on the rubber stopper body side, and the rubber stopper body serves as a counterpart member when acting as a stopper. A concave portion that is recessed toward the bulging portion of the metal plate from a surface opposite to the surface that is fixed to the metal plate, which is a contact surface of the metal plate, faces the bulging portion in the left-right direction. Provided in a state, and an annular protrusion that protrudes on the opposite side of the metal plate is formed around the recess,
The anti-vibration rubber stopper for a railway vehicle is characterized in that the annular projecting portion is provided in a state where at least a portion on the outer peripheral side is positioned on the outer peripheral side with respect to the bulging portion.   2. The anti-vibration rubber stopper for a railway vehicle according to claim 1, wherein the annular protrusion is provided with an air vent groove that communicates between the inner recess and the outside so as to cross the annular protrusion. .   3. The anti-vibration rubber stopper for a railway vehicle according to claim 2, wherein the annular protrusion has a shape that is continuous in the circumferential direction except for the air bleeding groove.   4. The anti-vibration rubber stopper for a railway vehicle according to claim 1, wherein the rubber stopper main body and the metal plate are integrally fixed together by vulcanization adhesion.

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