JP2015034600A - Damper mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damper mounting device capable of suppressing backlash, and preventing excessive bending moment from acting on a damper even in a case of fixed stagnation.SOLUTION: A damper mounting device A1 includes a shaft member 2 inserted to an annular eye-type bracket 1 disposed on one end of a damper D, to be attached to a vibration control object, a connecting portion 20 disposed on the shaft member 2 and accommodated in the eye-type bracket 1, and a pair of connecting members 3A, 3B holding the connecting portion 20 from both sides and rotatably connecting the connecting portion 20 to the eye-type bracket 1. Each of the connecting members 3A, 3B comprises an inner member 30 having an inner peripheral face 30a along an outer peripheral face 20a of the connecting portion 20 and being in slidable contact with the connecting portion 20, an outer member 31 fitted to an inner periphery of the eye-type bracket 1 and disposed at an outer peripheral side of the inner member 30, and a rubber member 32 disposed between the inner member 30 and the outer member 31, for integrating them.

Description

  The present invention relates to a damper mounting device.

  There is a case where a damper called a yaw damper that suppresses the snake behavior of the carriage is provided between the vehicle body and the carriage in the railway vehicle. When the damper is used as a yaw damper, it is usually used in a horizontal position with respect to the railway vehicle. However, not only is the carriage allowed to rotate in the horizontal direction with respect to the vehicle body, Since a pillow spring is interposed between the vehicle body and the vehicle body can be moved up and down with respect to the carriage, the damper rotates in the vertical direction with respect to the vehicle body and the carriage (torsion), and the vehicle body and It must be allowed to rotate laterally with respect to the carriage.

  For this reason, some damper attachment devices for attaching a damper to a vehicle body and a carriage employ a rubber bush or a spherical bearing to allow the damper to be twisted and twisted with respect to the vehicle body and the carriage (see, for example, Patent Document 1). .

JP 2002-46603 A (see paragraph 0010)

  Here, for example, when a vehicle body tilting device is installed in a railway vehicle, the input in the torsional direction to the damper becomes large. Therefore, when a rubber bush is used as the damper mounting device, durability that can withstand the input is ensured. Therefore, it is necessary to reduce the rigidity of the rubber bush in order to increase the size of the rubber bush or to allow the damper to be twisted with respect to the above input, and the degree of freedom of setting the rigidity of the rubber bush is low.

  On the other hand, the spherical bearing has a spherical inner peripheral surface fixed to the end portion of the damper, and the inner peripheral surface is brought into sliding contact with the spherical portion fixed to the vehicle body or the trolley side so that the spherical portion is The structure is excellent in durability with respect to the angle input in the twisting direction and the torsional direction having an angle with respect to the axis of the damper. For this reason, when an angle input becomes large, such as when a vehicle body tilting device is mounted, it is preferable to employ a spherical bearing as the damper mounting device.

  However, the conventional spherical bearing has a problem in that when the wear progresses due to sliding, play occurs. In addition, when the spherical bearing is stiff, there is a possibility that an excessive bending moment acts on the damper and degrades the damper. Such play due to wear and the action of an excessive bending moment on the damper due to firmness may occur regardless of whether or not the vehicle body tilting device is mounted.

  Therefore, the present invention was devised in order to improve the above-described problems, and the object of the present invention is to suppress backlash and to apply an excessive bending moment to the damper even when it is hard. It is an object of the present invention to provide a damper mounting device that does not need to act.

  Means for solving the above-described problems includes: a damper mounting device for mounting a damper to a vibration suppression target; and an annular eye-shaped bracket provided at one end of the damper; A shaft member, a connecting portion provided in the shaft member and accommodated in the eye bracket, and disposed between the eye bracket and the connecting portion, and sandwiching the connecting portion from both sides. A pair of connecting members that rotatably connect the connecting portion to the eye bracket, and each of the connecting members has an inner peripheral surface that follows the outer peripheral surface of the connecting portion and is slidably in contact with the connecting portion. An inner member, an outer member that is fitted to the inner periphery of the eye bracket and disposed on the outer peripheral side of the inner member, and is disposed between the inner member and the outer member. It is to comprise a rubber member for integrating these Te.

  According to the damper mounting device of the present invention, the rubber member is pre-compressed in a state where the connecting portion is connected to the eye bracket by the connecting member, so that even if the connecting portion and the inner member are worn due to sliding, the play is suppressed. it can. Even in the case of tightness, it is not necessary to apply an excessive bending moment to the damper due to the elasticity of the rubber member.

It is a side view which shows the use condition of the damper attachment apparatus which concerns on one embodiment of this invention. It is the longitudinal cross-sectional view which expanded and showed the damper attachment apparatus which concerns on one embodiment of this invention. It is the figure which showed the state which decomposed | disassembled the damper attachment apparatus which concerns on one embodiment of this invention, (a) is a front view of a shaft member, (b) is a longitudinal cross-sectional view of a connection member. It is the longitudinal cross-sectional view which expanded and showed the modification of the damper attachment apparatus which concerns on one embodiment of this invention. It is the figure which expanded and showed the damper attachment apparatus which concerns on other embodiment of this invention, (a) is the X1-X1 sectional view taken on the line of (b), (b) is a side view of a damper attachment apparatus. . It is the figure which showed the state which decomposed | disassembled the damper attachment apparatus which concerns on other embodiment of this invention, (a) is a front view of a shaft member, (b) is a side view of a connection member. It is the figure which expanded and showed the modification of the damper attachment apparatus which concerns on other embodiment of this invention, (a) is the X2-X2 sectional view taken on the line of (b), (b) is the side surface of a damper attachment apparatus. FIG.

  Hereinafter, a damper mounting device according to an embodiment of the present invention will be described with reference to the drawings. The same reference numerals given throughout the several drawings indicate the same or corresponding parts.

  As shown in FIG. 1, a damper mounting device A1 according to the present embodiment is for mounting a damper D to a vibration suppression target (not shown), and an annular eye bracket 1 provided at one end of the damper D; A shaft member 2 that is attached to the object to be damped and is inserted into the eye bracket 1; a connecting portion 20 that is provided on the shaft member 2 and is accommodated in the eye bracket 1; and the eye bracket. A pair of connecting members 3A and 3B that are disposed between the connecting portion 20 and the connecting portion 20 so as to sandwich the connecting portion 20 from both sides in the axial direction and rotatably connect the connecting portion 20 to the eye bracket 1. I have. As shown in FIG. 2, each of the connecting members 3A and 3B includes an inner member 30 having an inner peripheral surface 30a that follows the outer peripheral surface 20a of the connecting portion 20 and slidably contacting the connecting portion 20. The outer member 31 that is fitted to the inner periphery of the eye bracket 1 and is disposed on the outer peripheral side of the inner member 30 is disposed between the inner member 30 and the outer member 31 to integrate them. And a rubber member 32.

  In the present embodiment, the damper D is a yaw damper that is interposed between a vehicle body and a carriage in a railway vehicle, and that suppresses the serpentine behavior of the carriage and maintains running stability. The damper D may be other than a yaw damper that suppresses the snake behavior. Further, the damper D may be used for other than railway vehicles. For example, the damper D is interposed between a building and a foundation fixed to the ground, or between a beam on the upper floor and a beam on a lower floor of the building. It may be worn.

  Hereinafter, the damper mounting device A1 that interposes the damper D between the vehicle body that is the object of vibration suppression and the carriage will be described in detail. As described above, the damper mounting device A1 includes the annular eye bracket 1 fixed to the damper side, the shaft member 2 fixed to the vibration suppression target side (not shown), the eye bracket 1 and the shaft member 2. And a pair of connecting members 3A and 3B. In FIG. 1, the damper mounting device A <b> 1 according to the present invention is provided at both ends of the damper D, but may be provided only at one end of the damper D.

  The shaft member 2 is a metal rod-shaped member, and a pair of mounting portions 21 and 21 that are disposed at both ends of the shaft member 2 to open the bolt holes 22 respectively, and a spindle shape that is disposed between the mounting portions 21 and 21. And the connecting portions 20 and 21 protrude from the eye bracket 1 through the shaft hole of the eye bracket 1, and the connecting portion 20 is accommodated in the eye bracket 1. It has become so. The shaft member 2 is fixed to the vibration suppression target side via a bolt (not shown) inserted through the bolt hole 22. The spindle shape refers to a shape in which the bottom surfaces of a pair of truncated cones are abutted. In the present embodiment, the pair of attachment parts 21 and 21 and the connection part 20 are integrally formed, but the pair of attachment parts 21 and 21 and the connection part 20 are formed as separate bodies, and these are fitted and The shaft member 2 may be configured by being joined by welding or the like. Moreover, in this Embodiment, although the shaft member 2 is provided with the spindle-shaped connection part 20, it is good also as providing the spherical connection part 20 (FIG. 4).

  As shown in FIG. 2, the pair of connecting members 3 </ b> A and 3 </ b> B are respectively formed in a cylindrical shape, and are also formed in a cylindrical shape and arranged on the outer peripheral side of the inner member 30. A metal outer member 31; and a rubber member 32 made of rubber disposed between the inner member 30 and the outer member 31. The rubber member 32 and the inner member 30, and the rubber member 32 and the outer member 31 are They are bonded and integrated. Then, one connecting member 3A is press-fitted from the left side in FIG. 2 into the gap between the eye-shaped bracket 1 and the shaft member 2, and the other connecting member 3B is press-fitted from the right side in FIG. It is designed to be sandwiched from both sides.

  The inner peripheral surface 30 a of the inner member 30 in each of the connecting members 3 </ b> A and 3 </ b> B is inclined and curved so as to follow the outer peripheral surface 20 a of the connecting portion 20, and slidably contacts the connecting portion 20. In the present embodiment, since the connecting portion 20 has a spindle shape, the inner peripheral surface 30a of the inner member 30 in each of the connecting members 3A and 3B has a truncated cone shape. Further, as shown in FIG. 3, the inner diameter r1 of the end portion 30b on the center side of the connecting portion of the inner member 30 is set to be smaller than the outer diameter r2 at the center 20b of the connecting portion 20, and therefore each connecting member 3A. , 3B cannot be moved to the center 20b of the connecting portion 20 together. Further, the outer peripheral surface 30c of the inner member 30 in each of the connecting members 3A and 3B is curved so as to be closest to the outer member 31 on the center side of the connecting portion and gradually away from the outer member 31 toward the mounting portion side. Thereby, since the thickness of the rubber member 32 is increased on the attachment portion side than on the connection portion center side, it is easy to allow the twisting. In addition, the shape of the outer peripheral surface 30c of the inner member 30 is not limited to the above, and the distance from the outer member 31 may be constant.

  Further, as shown in FIG. 3, in a state in which each of the connecting members 3 </ b> A and 3 </ b> B is detached from the eye bracket 1, the end portion 30 b facing the center side of the connecting portion in the inner member 30 at the time of attachment It protrudes in the axial direction (left side in FIG. 3B) from the end portion 31a facing the center side.

  Next, a method of connecting the eye bracket 1 and the shaft member 2 using the connecting members 3A and 3B in the damper mounting device A1 according to the present embodiment will be described.

  The shaft member 2 is inserted into the eye bracket 1, and the connecting members 3 </ b> A and 3 </ b> B are pressed into the gap between the eye bracket 1 and the shaft member 2 from both sides in the axial direction toward the center 20 b of the connecting portion 20. At this time, as described above, the inner diameter r1 of the end 30b on the central side of the connecting portion in the inner member 30 is set smaller than the outer diameter r2 of the center 20b of the connecting portion 20, and therefore the inner member 30 is connected to the connecting portion. Before reaching the center 20b of 20, the movement toward the center of the connecting portion is prevented.

  On the other hand, the outer member 31 contacts the outer member 31 of the other connecting member (the outer member 31 of the left connecting member 3A in FIG. 2 and the inner member 31 of the right connecting member 3B in FIG. 2 contact). Since it can move, the outer member 31 can be pushed toward the center 20b of the connecting part 20 even if the connecting member 20 prevents the inner member 30 from moving toward the connecting part center side in each connecting member 3A, 3B. . In this way, the rubber member 32 is compressed between the inner member 30 and the outer member 31 by further pressing the outer member 31 from the state where the movement of the inner member 30 is restricted, and the damper mounting device A1 is a rubber member. While precompressing 32, the eye bracket 1 and the shaft member 2 are connected by the connecting members 3A and 3B.

  Hereinafter, the operation and effect of the damper mounting device A1 according to the present embodiment will be described.

  In the present embodiment, the inner member 30 and the outer member 31 are both cylindrical, and the inner diameter r1 of the end portion 30b on the center side of the connecting portion in the inner member 30 is larger than the outer diameter r2 at the center 20b of the connecting portion 20. Is set to a small diameter, and in a state where the connecting members 3A and 3B are detached from the eye bracket 1, the end portion 30b facing the connecting portion center side in the inner member 30 is the center of the connecting portion in the outer member 31. It protrudes in the axial direction from the end portion 31a facing the side.

  According to the above configuration, the outer member 31 can move in the axial direction until the outer member 31 contacts the outer member 31 of the other connecting member facing each other, but the inner member 30 cannot move to the center 20 b of the connecting portion 20. . For this reason, the rubber member 32 can be pre-compressed by pushing the outer member 31 between the eye bracket 1 and the inner member 30 in a state where the movement of the inner member 30 is restricted. That is, with the above configuration, the rubber member 32 can be easily pre-compressed. Further, by changing the axial lengths of the inner member 30 and the outer member 31, the preload applied to the inner member 30 can be adjusted, and the sliding resistance between the connecting portion 20 and the inner member 30 can be adjusted. The configuration for pre-compressing the rubber member 32 is not limited to the above, and can be changed as appropriate.

  Moreover, in this Embodiment, the outer diameter of the connection part 20 is formed so that it may become small toward the both ends from the center 20b.

  According to the above configuration, it is possible to easily restrict the movement of the inner member 30 using the outer diameter difference of the connecting portion 20. In the present embodiment, the connecting portion 20 has a spindle shape. For this reason, for example, even when the vehicle body tilting device is mounted and the angle input in the torsional direction acting on the damper D is increased, the input can be released by the sliding of the connecting portion 20 and the inner member 30. Unlike the rubber bush, the rigidity setting freedom degree of the rubber member 32 is not lowered.

  The shape of the connecting portion 20 may be other than a spindle shape, and may be a spherical shape as shown in FIG. In this case, the inner member 30 in each of the connecting members 3 </ b> A and 3 </ b> B includes a substantially hemispherical inner peripheral surface 30 a that follows the outer peripheral surface 20 a of the connecting portion 20. In addition, when the connecting portion 20 is formed into a spherical shape in this way, the angle input in almost all directions acting on the damper D can be released by the sliding of the connecting portion 20 and the inner member 30, and compared with the case where the spindle shape is formed. It becomes easy to allow the damper D to be twisted with respect to the vehicle body and the carriage. However, it is easier to form the connecting portion 20 and the inner member 30 if the connecting portion 20 is spindle-shaped. Moreover, although not shown in figure, the connection part 20 may be the shape where the column shape with a small outer diameter continues in the both ends of the axial direction of a column shape with a large outer diameter. Thus, when the level | step difference is provided in the connection part 20, the inner member 30 can be hooked on this level | step difference, and the movement of the said inner member 30 can be controlled.

  Further, in the present embodiment, the damper attachment device A1 is for attaching the damper D to the vibration suppression target, and attaches the annular eye bracket 1 provided at one end of the damper D to the vibration suppression target. A shaft member 2 inserted through the eye bracket 1, a connecting portion 20 provided in the shaft member 2 and accommodated in the eye bracket 1, the eye bracket 1 and the connecting portion 20, And a pair of connecting members 3A and 3B that are disposed between the connecting portions 20 so as to sandwich the connecting portions 20 from both sides in the axial direction and connect the connecting portions 20 to the eye bracket 1 in a rotatable manner.

  Each of the connecting members 3A and 3B includes an inner member 30 having an inner peripheral surface 30a that follows the outer peripheral surface 20a of the connecting portion 20 and slidably in contact with the connecting portion 20; An outer member 31 that is fitted to the periphery and disposed on the outer peripheral side of the inner member 30, and a rubber member 32 that is disposed between the inner member 30 and the outer member 31 and integrates them. ing.

  According to the above configuration, since the rubber member 32 is pre-compressed in a state where the connecting portion 20 is connected to the eye bracket 1 by the connecting members 3A and 3B, wear of the inner member 30 and the connecting portion 20 proceeds due to sliding. Even if it does, it becomes possible to suppress backlash. Further, even when the connecting portion 20 and the inner member 30 are stiff, the rubber member 32 can be elastically deformed, so that it is not necessary to apply an excessive bending moment to the damper D.

  Next, a damper mounting device A2 according to another embodiment of the present invention will be described with reference to the drawings. About the structure similar to damper mounting apparatus A1 which concerns on one embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  As shown in FIG. 5, the damper attachment device A2 according to the present embodiment is for attaching the damper D to the vibration suppression target, as in the case of the one embodiment, and is an annular provided at one end of the damper D. The eye bracket 1, a shaft member 4 that is attached to the object to be damped and inserted through the eye bracket 1, and a connecting portion 40 that is provided on the shaft member 4 and accommodated in the eye bracket 1. A pair of connecting members 5A, which are disposed between the eye bracket 1 and the connecting portion 40, sandwich the connecting portion 40 from both sides, and rotatably connect the connecting portion 40 to the eye bracket 1. 5B. Each of the connecting members 5A and 5B includes an inner member 50 having an inner peripheral surface 50a that follows the outer peripheral surface 40a of the connecting portion 40 and slidably in contact with the connecting portion 40, and an inner portion of the eye bracket 1. An outer member 51 that is fitted to the periphery and disposed on the outer peripheral side of the inner member 50, and a rubber member 52 that is disposed between the inner member 50 and the outer member 51 to integrate them are provided. ing.

  Since the damper D of the present embodiment is the same as the damper D of the embodiment, the damper mounting device A2 for interposing the damper D between the vehicle body to be controlled and the carriage will be described in detail below. To do. As described above, the damper mounting device A2 connects the annular eye bracket 1 fixed to the damper side, the shaft member 4 fixed to the vibration suppression target side, and the eye bracket 1 and the shaft member 4 to each other. A pair of connecting members 5A and 5B.

  The shaft member 4 is a metal rod-shaped member, and a pair of mounting portions 41 and 41 that are disposed at both ends of the shaft member 4 so that the bolt holes 42 are opened, and a columnar shape that is disposed between the mounting portions 41 and 41. The connecting part 40 penetrates through the axial hole of the eye bracket 1 and both mounting parts 41 and 41 protrude from the eye bracket 1, and the connecting part 40 is accommodated in the eye bracket 1. It has become so. The shaft member 4 is fixed to the vibration suppression target side via a bolt (not shown) inserted through the bolt hole 42. In the present embodiment, the pair of mounting portions 41 and 41 and the connecting portion 40 are integrally formed, but the pair of mounting portions 41 and 41 and the connecting portion 40 are formed as separate bodies, and these are fitted and The shaft member 4 may be configured by being joined by welding or the like. Moreover, in this Embodiment, although the shaft member 4 is provided with the column-shaped connection part 40, the connection part 40 may be spindle shape or a spherical form (FIG. 7).

  As shown in FIG. 5B, the pair of connecting members 5A and 5B are respectively formed of a metallic inner member 50 formed in a half-cylindrical shape and the inner member 50 formed in a half-cylindrical shape. A metal outer member 51 disposed on the outer peripheral side of the rubber member, and a rubber member 52 made of rubber disposed between the inner member 50 and the outer member 51. The rubber member 52, the inner member 50, and rubber The member 52 and the outer member 51 are bonded and integrated. Then, the connecting portion 40 is press-fitted into the eye bracket 1 from one side of the eye bracket 1 with the connecting members 5A and 5B sandwiched from both sides in the radial direction.

  The inner peripheral surface 50a of the inner member 50 in each of the connecting members 5A and 5B is curved in an arc shape so as to follow the outer peripheral surface 40a of the connecting portion 40, and slidably contacts the connecting portion 40. Furthermore, in this Embodiment, the inner periphery of the inner member 50 in each connection member 5A, 5B is set shorter than 1/2 length of the outer periphery of the connection part 40, and it connects with both connection members 5A, 5B. When the portion 40 is sandwiched from both sides in the radial direction, a gap S is formed between the inner member 50 in one connecting member 5A and the inner member 50 in the other connecting member 5B. Further, as shown in FIG. 5A, the outer peripheral surface 50b of the inner member 50 in each of the connecting members 5A and 5B is closest to the outer member 51 on the center side in the axial direction of the connecting portion 40 and extends toward the mounting portion side. The outer member 51 is curved so as to be gradually separated. Thereby, since the thickness of the rubber member 52 is increased on the attachment portion side than on the connection portion center side, it is easy to allow the twisting. The shape of the outer peripheral surface 50b of the inner member 50 is not limited to the above, and the distance from the outer member 51 may be constant.

  Further, as shown in FIG. 6, when the connecting members 5 </ b> A and 5 </ b> B are detached from the eye bracket 1, both circumferential ends 50 c and 50 d of the inner member 50 are both circumferential ends 51 a of the outer member 51. , 51b protrudes in the radial direction (left side in FIG. 5B). In the present embodiment, the inner member 50 of the pair of connecting members 5A and 5B is symmetric in FIG. The length of the inner member 50 of the pair of connecting members 5A, 5B is set to be shorter than the outer periphery of the connecting portion 40, and the connecting members 5A, 5B, When the connecting portion 40 is sandwiched from both sides in the radial direction by 5B, a gap S may be formed between the inner member 50 in one connecting member 5A and the inner member 50 in the other connecting member 5B. .

  Next, a method of connecting the eye bracket 1 and the shaft member 4 using the connecting members 5A and 5B in the damper mounting device A2 according to the present embodiment will be described.

  The connecting portion 40 of the shaft member 4 is press-fitted into the eye bracket 1 from one side of the eye bracket 1 with the connecting members 5A and 5B sandwiched from both sides in the radial direction. At this time, as described above, the sum of the inner peripheries of the inner members 50 and 50 is set shorter than the outer periphery of the connecting portion 40, so that a gap S is formed between the inner members 50 and 50.

  On the other hand, the outer member 51 can move until it comes into contact with the outer member 51 of the other connecting member. Therefore, even if the movement of the inner member 50 is blocked by the connecting portion 40 when being pressed into the eye bracket 1. The outer member 51 can be moved in the radial direction toward the center of the connecting portion 40. Thus, by pushing the outer member 51 further from the state in which the movement of the inner member 50 is restricted, the rubber member 52 is compressed between the inner member 50 and the outer member 51, and the damper mounting device A2 is a rubber member. While pre-compressing 52, the eye bracket 1 and the shaft member 4 are connected by the connecting members 5A and 5B.

  Hereinafter, the operation and effect of the damper mounting device A2 according to the present embodiment will be described.

  In the present embodiment, the inner member 50 and the outer member 51 are both halved cylinders, and the total inner circumference of the inner member 50 of the pair of connecting members 5A and 5B is set shorter than the outer circumference of the connecting portion 40. When the connecting members 5A and 5B are detached from the eye bracket 1, both circumferential ends 50c and 50d of the inner member 50 project more radially than the circumferential ends 51a and 51b of the outer member 51. ing.

  According to the above configuration, when the eye bracket 1 and the shaft member 4 are connected by the connecting members 5A and 5B, the outer member 51 is connected to the eye bracket 1 and the inner member 50 in a state where the movement of the inner member 50 is restricted. Since the rubber member 52 can be precompressed by pushing between the two, the rubber member 52 can be easily precompressed. Further, by changing the circumferential lengths of the inner member 50 and the outer member 51, the preload applied to the inner member 50 can be adjusted, and the sliding resistance between the connecting portion 40 and the inner member 30 can be adjusted. The configuration for pre-compressing the rubber member 52 is not limited to the above, and can be changed as appropriate.

  Further, in the present embodiment, the damper attachment device A2 is for attaching the damper D to the vibration suppression target, and attaches the annular eye bracket 1 provided at one end of the damper D to the vibration suppression target. A shaft member 4 inserted into the eye bracket 1, a connecting portion 40 provided in the shaft member 4 and accommodated in the eye bracket 1, the eye bracket 1 and the connecting portion 40, And a pair of connecting members 5A and 5B that sandwich the connecting portion 40 from both sides in the radial direction and rotatably connect the connecting portion 40 to the eye bracket 1.

  Each of the connecting members 5A and 5B includes an inner member 50 having an inner peripheral surface 50a that follows the outer peripheral surface 40a of the connecting portion 40 and slidably in contact with the connecting portion 40, and an inner portion of the eye bracket 1. An outer member 51 that is fitted to the periphery and disposed on the outer peripheral side of the inner member 50, and a rubber member 52 that is disposed between the inner member 50 and the outer member 51 to integrate them are provided. ing.

  According to the above configuration, since the rubber member 52 is pre-compressed in a state where the connecting portion 40 is connected to the eye bracket 1 by the connecting members 5A and 5B, wear of the inner member 50 and the connecting portion 40 proceeds due to sliding. Even if it does, it becomes possible to suppress backlash. Further, even when the connecting portion 40 and the inner member 50 are stiff, the rubber member 52 can be elastically deformed, so that it is not necessary to apply an excessive bending moment to the damper D.

  Moreover, in the said embodiment, the connection part 40 is cylindrical. For this reason, for example, even when the vehicle body tilting device is mounted and the angle input in the torsional direction acting on the damper D is increased, the input can be released by the sliding of the connecting portion 40 and the inner member 50. Unlike the rubber bush, the rigidity setting freedom degree of the rubber member 52 is not lowered.

  The connecting portion 40 may have a shape other than the cylindrical shape, may be spherical as shown in FIG. 7, or may be spindle-shaped as in the embodiment although not shown. As described above, when the shape of the connecting portion 40 is changed, the shape of the inner peripheral surface 50a of the inner member 50 in each of the connecting members 5A and 5B is also changed following the shape of the outer peripheral surface of the connecting portion 40. Further, when the connecting portion 40 has a spindle shape, the angle input in the torsional direction acting on the damper D can be released by the sliding of the connecting portion 40 and the inner member 50 as in the case of the cylindrical shape. On the other hand, when the connecting portion 40 is made spherical as shown in FIG. 7, the angle input in almost all directions acting on the damper D can be released by the sliding of the connecting portion 40 and the inner member 50, and it has a cylindrical shape or a spindle shape. Compared to the case, it becomes easier to allow the damper D to be twisted with respect to the vehicle body and the carriage. However, it is easier to form the connecting part 40 and the inner member 50 if the connecting part 20 is formed in a columnar shape.

  Although preferred embodiments of the present invention have been described in detail above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

A1, A2 Damper mounting device D Damper r1 Inner member inner diameter r2 Inner member inner diameter r2 Outer member diameter in the center of the connecting member 1 Eye bracket 2, 4 Shaft member 20, 40 Connecting member 3A, 3B, 5A, 5B Connecting member 30, 50 Inner member 31, 51 Outer member 32, 52 Rubber member 20a, 40a Outer peripheral surface 20b of connecting portion Center of connecting portion 30a, 50a Inner peripheral surface of inner member 30b End portion 31a End portions 50a and 50d on the center side of the connecting portion in the outer member (facing) End portions 51a and 51b in the circumferential direction on the inner member End portions in the circumferential direction on the outer member

Claims (6)

In the damper mounting device that mounts the damper to the vibration suppression target,
An annular eye-shaped bracket provided at one end of the damper, a shaft member attached to the object to be controlled and inserted through the eye-shaped bracket, and provided in the shaft member and accommodated in the eye-shaped bracket A connecting portion, and a pair of connecting members that are arranged between the eye bracket and the connecting portion, sandwich the connecting portion from both sides, and rotatably connect the connecting portion to the eye bracket.
Each of the connecting members has an inner peripheral surface that follows the outer peripheral surface of the connecting portion and is slidably in contact with the connecting portion, and is fitted to the inner periphery of the eye bracket and the inner member. A damper mounting device comprising: an outer member disposed on an outer peripheral side; and a rubber member disposed between the inner member and the outer member to integrate them.   The damper attachment device according to claim 1, wherein the pair of connecting members sandwich the connecting portion from both sides in the axial direction.   The damper mounting device according to claim 1, wherein the pair of connecting members sandwich the connecting portion from both sides in the radial direction.   The damper mounting device according to claim 2, wherein an outer diameter of the connecting portion is formed so as to decrease from the center toward both ends.   The inner member and the outer member are both cylindrical, and the inner diameter of the end portion of the inner member on the center side of the connecting portion is set to be smaller than the outer diameter at the center of the connecting portion. In a state where it is detached from the eye-shaped bracket, the end portion of the inner member facing the central portion of the connecting portion protrudes in an axial direction from an end portion of the outer member facing the central portion of the connecting portion. The damper mounting device according to claim 4.   The inner member and the outer member are both half-cylindrical, and the total inner circumference of the inner member of the pair of connecting members is set to be shorter than the outer circumference of the connecting portion. 4. The damper mounting device according to claim 3, wherein both ends of the inner member in the circumferential direction protrude in a radial direction from both ends of the outer member in the circumferential direction in a state of being detached from the mold bracket. .

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