JP6173033B2 - Swing damper device - Google Patents

Description

  The present invention relates to a rocking damper device used for a storage shelf that can be raised and lowered.

  There exists a thing of patent document 1 as an oscillation damper apparatus which can obtain a damper generating torque at the time of rotation. The swing damper device includes a blade member that is provided on the outer peripheral surface of the rotating member along the axial direction and protrudes in the radial direction, and a valve member that covers the blade member.

  And, almost no torque is generated for the rotation of the rotating member in one direction, and a large torque is generated only when rotating in the reverse direction.

  In such a swing damper device, since the cross-sectional shape of the valve member is formed asymmetrically in the rotational direction, Patent Document 1 has a structure in which erroneous assembly is a problem and erroneous assembly in a different assembly direction is not possible.

  However, whether or not erroneous assembly is possible cannot be known unless the valve member is actually put on the blade member, and as a result, there has been a limit in improving the assembly workability.

JP 2007-327578 A

  The problem to be solved is that the improvement in assembly workability has been limited.

In order to improve the assembly workability, the present invention includes a case in which a partitioning ridge projecting radially inwardly into a working chamber having a cylindrical inner surface is sealed with viscous working liquid, and the working chamber A shaft portion that is concentric and is provided so as to be relatively rotatable, and a drive protrusion that protrudes radially outward from the shaft portion and has a closing surface on one side in the rotation direction. A rotating body provided with a portion, and an outer surface in a radial direction that is disposed between a driving protrusion of the rotating body and an inner surface of the working chamber is a slidable contact surface with respect to an inner peripheral surface of the working chamber. A valve body portion having a concave inner surface loosely fitted in the rotational direction on the strip portion, and the drive convex strip portion includes a closing wall portion having a closing surface, a pair of engaging convex portions, and a pair of engaging surfaces. The closing surface is provided on one side in the rotational direction of the closing wall, and the pair of engaging projections are In order to allow the body portion to loosely fit in the rotational direction, the body portion is provided so as to be opposed to each other on both sides in the axial direction of the closing wall portion, and the engaging surfaces are pivoted on both sides in the axial direction of the closing wall portion. The valve body portion is formed in a symmetrical shape in the rotational direction and the axial direction, and the valve body portion has wall portions on both sides of the rotational direction, and the both wall portions are in the radial direction. In the axial direction of the recess , a pair of driven engagement portions and a pair of positioning engagement portions are formed in the rotation direction and the axial direction, respectively. Formed on both sides, an inner surface that contacts the closing surface is formed on one of the walls, and a symmetric inner surface is formed on the other, and the pair of driven engagement portions are axially opposite to the recess. And the pair of positioning engaging portions are opposed to the recesses. A pair of driven engagement portions of the valve body portion are opposed to each other in the axial direction, and the pair of positioning engagement portions are loosely fitted in the rotation direction on the engagement convex portions on both axial sides of the concave portion. When the rotary body rotates to one side of the working chamber, the valve body portion receives a pressure of the working liquid and rotates relative to the drive ridge portion to face the engagement surface in the axial direction . When the side surface abuts on the closing surface to prevent the working liquid from flowing between the rotating body and the valve body portion or to provide resistance to the flow, and the rotating body rotates to the other side of the working chamber, the relative rotation is performed. The valve body portion is separated from the return surface, and a gap is formed between the drive rib portion and the valve body portion between the recessed portion of both wall portions of the valve body portion and the closing wall portion. The working liquid is allowed to flow.

  In the oscillating damper device according to the present invention, since the valve body portion is formed with the concave portions on both wall portions and formed symmetrically in the rotational direction, and the inner surface is provided symmetrically on both wall portions, the valve body When the part is fitted to the drive ridge part and assembled, it can be properly assembled regardless of the direction. For this reason, the efficiency of the assembling work can be improved.

It is sectional drawing of the rocking damper apparatus which shows the state at the time of a damping effect | action. Example 1 It is sectional drawing of the rocking damper apparatus which shows the state at the time of damping non-operation. Example 1 It is a perspective view of a shaft part. Example 1 It is a perspective view of a valve body part. Example 1 It is a principal part expanded sectional view which shows the engagement of the axial direction of the valve body part with respect to a axial part. Example 1

  For the purpose of improving the assembly workability, a cylindrical inner surface-shaped working chamber is formed with a partition projection protruding radially inward and sealed with viscous working liquid, and the working chamber is concentric. A shaft portion inscribed in the partitioning ridge portion, and a drive ridge portion projecting radially outward from the shaft portion and having a closing surface on one side in the rotation direction. The outer surface in the radial direction disposed between the rotating body, the driving ridge portion of the rotating body and the inner surface of the working chamber is a slidable contact surface with respect to the inner peripheral surface of the working chamber. A valve body portion having a concave inner surface loosely fitted in the rotation direction, and when the rotary body rotates to one of the working chambers, the valve body portion receives the pressure of the working liquid to Relative rotation and one side of the concave inner surface abuts on the closing surface, When the rotating body rotates to the other side of the working chamber, the relative rotation returns and the concave inner surface is separated from the closing surface. It is a rocking damper device that allows a flow of the working liquid by forming a gap between the drive ridge and the concave inner surface of the valve body, wherein the valve body has wall portions on both sides in the rotational direction. The both wall portions are each formed with a recess that cuts from the inner edge in the radial direction toward the outer side in the radial direction, and is formed in a symmetrical shape in the rotational direction, and abuts against the closing surface on one of the wall portions This was realized by forming an inner surface and forming a symmetrical inner surface on the other side.

  The drive protrusion is provided with a pair of engagement protrusions and a pair of engagement surfaces, and the pair of engagement protrusions are provided so as to face each other on both sides in the axial direction. The engaging surface has a projecting height lower than that of the engaging convex portion and is formed outward in the axial direction on both sides of the rotating direction of the engaging convex portion, and the closing surface is higher than the engaging convex portion. The valve body portion includes a pair of driven engagement portions and a pair of positioning engagement portions, and is formed continuously between the engagement convex portions on one side in the rotational direction of the shaft portion. The pair of driven engagement portions is formed for each of the pair of engagement projections and is formed so as to be loosely fitted to the pair of engagement projections in the rotation direction. Each of the pair of engagement surfaces is positioned to face each other, and the concave portion of the valve body portion is formed between the driven engagement portions in the axial direction. And it can also be.

  1 and 2 show a swing damper device according to a first embodiment of the present invention. FIG. 1 is a sectional view of the swing damper device showing a state during a damping operation, and FIG. 2 shows a state when the damping is not operated. It is sectional drawing of the rocking | fluctuation damper apparatus shown. In the following description, the axial direction means the rotational axis direction of the rotating body, the rotational direction means the rotating direction of the rotating body, and the radial direction means the radial direction of the rotating body.

  The swing damper device 1 according to the first embodiment of the present invention includes a case 3, a rotating body 5 provided in the case 3 so as to be relatively rotatable, and a valve body portion 7 disposed on an outer peripheral surface of the rotating body 5. And.

  The case 3 is formed in a cylindrical shape as a whole, and partitioning ridge portions 11a and 11b are provided in a cylindrical inner surface-shaped working chamber 9 so as to protrude in a pair symmetrically inward in the radial direction. Inside the working chamber 9, a working liquid having viscosity such as silicon oil is enclosed.

  The working chamber 9 is provided with the shaft-like rotating body 5 that is concentric and relatively rotatable. The rotating body 5 has a shaft portion 15. The outer peripheral surface of the shaft portion 15 is inscribed in the partitioning ridge portions 11a and 11b. A pair of drive protrusions 17 project symmetrically from the shaft 15 outward in the radial direction. The drive ridge 17 has a closing surface 19 on one side in the rotational direction.

  The rotating body 5 has a tip 5a supported by the case 3, a flange 5b, and a connecting portion 5c protruding outside the case 3.

  FIG. 3 is a perspective view of the shaft portion, FIG. 4 is a perspective view of the valve body portion, and FIG. 5 is an enlarged cross-sectional view of a main portion showing the engagement of the valve body portion with the shaft portion in the axial direction.

  As shown in FIGS. 1 to 3, the drive protrusion 17 has a shape along the axial direction, and includes a pair of engagement protrusions 21 a and 21 b and a pair of engagement surfaces 23 a and 23 b.

  The pair of engaging convex portions 21a and 21b are provided so as to face each other on both sides in the axial direction, and protrude in the radial direction in a rectangular shape.

  The pair of engaging surfaces 23a and 23b are formed so as to protrude outward in the axial direction on both sides in the rotational direction of the engaging convex portions 21a and 21b. In the present embodiment, low protrusions 25 are formed on the outer peripheral surface of the shaft part 15 on the base side of the axially opposed surfaces of the engaging protrusions 21a and 21b, and both end parts of the low protrusions 25 in the axial direction are formed. The engaging surfaces 23a and 23b are formed outward in the axial direction. The engagement surfaces 23a and 23b are located on the base side of the axially opposed surfaces of the engagement convex portions 21a and 21b.

  However, the axial positions of the engagement surfaces 23a and 23b are not particularly limited, and can be offset inward and outward in the axial direction with respect to the axially opposed surfaces of the engagement convex portions 21a and 21b.

  The closing surface 19 is lower than the engaging convex portions 21a and 21b and is formed continuously between the engaging convex portions 21a and 21b on one side in the rotational direction. In the present embodiment, a closed wall portion 27 having a low protruding height is formed on the low convex portion 25 between the engaging convex portions 21 a and 21 b, and a closing surface 19 is formed on one front side of the closed wall portion 27. ing. The closing surface 19 is formed flush with the one side front surface of the pair of engaging convex portions 21a and 21b.

  As shown in FIGS. 1 to 4, the valve body portion 7 is disposed between the drive protrusion 17 of the rotating body 5 and the inner surface of the working chamber 9.

  The valve body portion 7 has an outer surface 7a in the radial direction that is a curved convex sliding contact surface with respect to the inner peripheral surface 9a of the working chamber 9, and a concave inner surface 7b having a concave cross section is loosely fitted in the drive ridge portion 17 in the rotational direction. To do.

  The valve body portion 7 has wall portions 7c and 7d on both sides in the rotational direction, and concave portions 31a and 31b are formed in the both wall portions 7c and 7d so as to cut from the inner edge in the radial direction to the outer side in the radial direction. ing. In this embodiment, the recesses 31a and 31b have a shape that is cut out into a rectangular shape. However, the recesses 31a and 31b only need to be able to form a flow path of the working liquid between the drive ridges 17 and the symmetrical shape of the recesses 31a and 31b can be freely set, and can also be formed as an opening having a lower edge. . The valve body portion 7 is formed in a symmetrical shape in the rotation direction.

  An inner side surface 7ba that contacts the closing surface 19 is formed on one of the walls 7c and 7d, and a symmetrical inner side surface 7bb is formed on the other 7d. When the inner surface 7ba abuts against the closing surface 19, the flow of the working liquid between the drive protrusion 17 and the valve body 7 of the rotating body 5 is prevented. However, when the inner surface 7ba comes into contact with the closing surface 19, a slight gap is formed, and a resistance is given to the flow of the working liquid between the drive protrusion 17 and the valve body 7 of the rotating body 5. It can also be.

  The valve body portion 7 includes a pair of driven engagement portions 35a and 35b and a pair of positioning engagement portions 37a and 37b.

  The pair of driven engaging portions 35a and 35b are formed corresponding to the pair of engaging convex portions 21a and 21b of the rotating body 5, and are loosely fitted to the pair of engaging convex portions 21a and 21b, respectively, in the rotation direction. It is formed as follows. The concave inner surface 7b of the valve body 7 is continuous inside the pair of driven engagement portions 35a and 35b.

  The pair of positioning engagement portions 37a and 37b are formed as opposite ends in the axial direction of the pair of driven engagement portions 35a and 35b, and are respectively connected to the pair of engagement surfaces 23a and 23b of the drive protrusion 17. Positioned opposite the direction.

  The concave portions 31a and 31b of the valve body portion 7 are formed between the driven engagement portions 35a and 35b in the axial direction.

  Accordingly, as shown in FIG. 1, when the rotating body 5 rotates in the direction of one arrow A of the working chamber 9, the valve body portion 7 receives the pressure of the working liquid and rotates relative to the drive protrusion 17 to close the closed surface. 19, the inner side surface 7ba, which is one side of the concave inner surface 7b, abuts to prevent the working liquid from flowing between the rotating body 5 and the valve body portion 7.

  As shown in FIG. 2, when the rotating body 5 rotates in the direction of the other arrow B of the working chamber 9, the relative rotation returns, the concave inner surface 7 b is separated from the closing surface 19, and the drive ridge 17 and the valve body 7. A gap is formed between the concave inner surface 7b and the working liquid is allowed to flow.

  When assembling, the valve body portion 7 is formed in a symmetrical shape in the rotational direction by forming the recess portions 31a and 31b in both wall portions 7c and 7d, and the inner side surfaces 7ba and 7bb are symmetrical in both the wall portions 7c and 7d. Therefore, even when the valve body portion 7 is assembled to the drive projection 17 and assembled in any direction, regular assembly can be performed. For this reason, the efficiency of the assembling work can be improved.

DESCRIPTION OF SYMBOLS 1 Swing damper apparatus 3 Case 5 Rotating body 7 Valve body part 7b Concave inner surface 9 Working chamber 9a Inner peripheral surface of a working chamber 11a, 11b Partition convex part 15 Shaft part 17 Driving convex part 19 Closing surface 21a, 21b Engagement Convex part 23a, 23b Engagement surface 35a, 35b Driven engagement part 37a, 37b Positioning engagement part

Claims (2)

A case in which a partition ridge projecting radially inwardly into a working chamber having a cylindrical inner surface shape is filled with a viscous working liquid;
A shaft portion concentrically provided in the working chamber so as to be relatively rotatable, a shaft portion that is inscribed in the partitioning ridge portion, a radially projecting outward from the shaft portion, and a shape along the axial direction with a closing surface on one side of the rotation direction A rotating body having a drive ridge having
The outer surface in the radial direction, which is disposed between the drive ridge of the rotating body and the inner surface of the working chamber, is a sliding contact surface with respect to the inner peripheral surface of the working chamber, and is free to play in the rotation direction on the drive ridge. A valve body portion having a concave inner surface to be fitted,
The drive ridge portion includes a closing wall portion having a closing surface, a pair of engaging convex portions, and a pair of engaging surfaces,
The closing surface is provided on one side of the rotation direction of the closing wall portion,
The pair of engaging convex portions are provided so as to face each other on both sides in the axial direction of the closing wall portion in order to cause loose fitting in the rotational direction of the valve body portion,
The engagement surface is provided axially outward on both axial sides of the closing wall portion,
The valve body is formed in a symmetrical shape in the rotational direction and the axial direction,
The valve body portion has wall portions on both sides in the rotational direction, and a concave portion that cuts from the inner edge in the radial direction toward the radially outer direction is formed in the both wall portions in the intermediate portion in the axial direction of both wall portions. Forming a pair of driven engagement portions and a pair of positioning engagement portions on both sides in the axial direction of the recess in the rotation direction and the axial direction, and an inner side surface that contacts the closing surface on one of the wall portions Forming a symmetrical inner surface on the other side,
The pair of driven engagement portions are opposed to each other in the rotational direction on both sides in the axial direction with respect to the recess, and the pair of positioning engagement portions are opposed to each other in the axial direction with respect to the recess,
The pair of driven engagement portions of the valve body portion are loosely fitted in the rotation direction to the engagement convex portions on both sides in the axial direction of the concave portion, and the pair of positioning engagement portions are opposed to the engagement surfaces in the axial direction. And
When the rotating body rotates to one side of the working chamber, the valve body portion receives the pressure of the working liquid, thereby rotating relative to the driving protrusion, and the one inner surface abuts on the closing surface and rotates. When the rotating body rotates to the other side of the working chamber, the relative rotation is returned to the closing surface to prevent the valve body part from flowing or preventing the working liquid from flowing between the body and the valve body part. Are spaced apart to form a gap between the concave portions of the both wall portions of the valve body portion and the closing wall portion between the drive ridge portion and the valve body portion, thereby permitting the flow of the working liquid.
A swing damper device characterized by that. The swing damper device according to claim 1,
The closing surface is formed continuously between the engagement protrusions on one side in the rotational direction with a lower height than the engagement protrusions,
The pair of positioning engagement portions are formed as opposed ends in the axial direction of the pair of driven engagement portions, and are positioned to face the pair of engagement surfaces, respectively.
A swing damper device characterized by that.

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