JP6043312B2 - Junction structure - Google Patents

Description

  The present invention relates to a joining structure that joins two joining objects.

  When joining two objects to be joined, a clevis joint may be used. In the clevis joint, a shaft is passed between a pair of arm portions provided on one joining target side, an insertion portion provided on the other joining target side is inserted between the arm portions, and the shaft is attached to the shaft. It can be rotated as a rotating shaft (see Patent Document 1).

  Further, FIG. 5 of Patent Document 2 describes a clevis joint that is rotatable about three axes orthogonal to each other by providing a spherical bearing on the shaft and engaging with the insertion portion. Yes.

Japanese Patent Laid-Open No. 11-002231 Japanese Patent Laid-Open No. 9-15529

  The clevis joint with a spherical bearing is used, for example, for mounting a hydraulic damper for vibration control to a building or the like as disclosed in Patent Document 2. In hydraulic dampers, hydraulic fluid in the cylinder passes through a hydraulic circuit such as a hydraulic valve as the piston moves in the cylinder due to vibration, and the resistance to vibration (damping force) is generated by the fluid resistance at that time. Absorbs shaking of things.

  However, accessories such as a tank for storing hydraulic oil may be attached to the outside of the hydraulic damper, and in cases such as cases where the hydraulic damper is placed in a narrow space, the hydraulic damper rotates in the circumferential direction. Accessories may collide with nearby structures. In some cases, the function of a tank, a valve, or the like provided in the damper may be impaired due to the inclination of the hydraulic damper accompanying the rotation in the circumferential direction.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a joining structure that prevents rotation in the circumferential direction of joining objects and allows other rotations.

The present invention for solving the above-described problem is a joining structure for joining two joining objects, a pair of arm parts provided on one joining object side, and a shaft provided between the arm parts A spherical bearing provided in the middle of the shaft, and a plug portion provided on the other joining target side, inserted between the arm portions, and having a hole engaged with the spherical bearing, bonding object, have a, a rotation preventing member for preventing the rotation of the direction connecting the spherical bearing and the bonding target as a rotation axis, the rotation preventing member, toward the arm portion from the insertion portion And the tip of the anti-rotation member is prevented from rotating from the center position of the spherical bearing. Vertical distance to the arm on the protruding side of the member When a joint structure characterized by having an arcuate portion substantially equal radius.

  As a result, in a clevis joint using a spherical bearing, a joining structure that allows rotation in other directions while preventing rotation in the circumferential direction of the joining object with the direction connecting the joining object and the spherical bearing as a rotation axis is simplified. Can be formed.

Further, by substantially abut an anti-rotation member provided in the insertion portion of the male end of the clevis joint to the arm portion of the female side of the clevis joint, it is possible to prevent the rotation in the circumferential direction of the bonding target in male . When the anti-rotation member is thus provided on the male side of the clevis joint, the tip of the anti-rotation member can be slid on the arm by the arc-shaped portion at the end of the anti-rotation member, thereby allowing the vertical rotation of the joining target.

Further, it is desirable that a pair of the rotation preventing members is provided at a position sandwiching the shaft on a plane along a direction orthogonal to the direction.
Thereby, the forward / reverse rotation of the joining object in the circumferential direction can be effectively prevented. Since the rotation preventing member moves with the rotation of the joining target in the left-right direction, the effect is not impaired by the rotation in the left-right direction.

  According to the present invention, it is possible to provide a joining structure that prevents rotation in the circumferential direction of the joining target and allows other rotations.

The figure which shows joining of the hydraulic damper 10 and the structures 20 and 30 The figure which shows the side surface and upper surface of the joining structure 1 The figure which shows the vertical direction cross section of the joining structure 1 The figure which shows rotation of joining structure 1 The figure which shows the side surface and upper surface of the joining structure 1a The figure which shows the perpendicular direction cross section of the joining structure 1a The figure which shows rotation of joining structure 1a

  Hereinafter, preferred embodiments of a joining structure according to the present invention will be described in detail with reference to the drawings. In the following embodiments, an example in which a hydraulic damper for vibration control is attached to a building or the like will be described. However, the application target of the joint structure according to the present invention is not limited to this.

[First embodiment]
FIG. 1 is a diagram showing the joining of the hydraulic damper 10 and the structures 20 and 30. 1A shows a side surface, and FIG. 1B shows an upper surface.

  In the hydraulic damper 10, a piston (not shown) attached to the piston rod 102 is movably provided in the cylinder 101. The joining structure 1 of the present embodiment attaches the end of the hydraulic damper 10 on the cylinder 101 side to the structure 20.

  The end of the hydraulic damper 10 on the piston rod 102 side is attached to the structure 30 by the joining structure 2. The cylinder 101 is also provided with a tank 103 and a valve 104 for storing hydraulic oil.

  Next, the junction structure 1 will be described with reference to FIGS. 2A is a side view of the bonding structure 1, and FIG. 2B is a view showing the upper surface of the bonding structure 1. FIG. FIGS. 3A to 3C are views showing a vertical section of the joint structure 1, and show sections taken along lines aa, bb, and cc in FIG. 2B, respectively.

  As shown in FIGS. 2 and 3, the joint structure 1 includes a rotation preventing member on a clevis joint composed of fixed parts 11 and 18, arm parts 12 and 14, an insertion part 13, a shaft 15, a spherical bearing 16 and the like. 17 is provided.

  The fixing portion 11 is a plate-like member that is fixed to the structure 20 to be joined on one side (fixed side). A pair of arm portions 12 and 14 are provided above and below the fixed portion 11, thereby constituting a female side portion of the clevis joint. The arm portions 12 and 14 are plate-like members that protrude from the fixed portion 11.

  A shaft 15 is passed between the arms 12 and 14. A spherical bearing 16 is provided in the middle of the shaft 15. The outer surface shape of the spherical bearing 16 is a shape obtained by cutting off the upper end portion and the lower end portion of the sphere.

  The fixing portion 18 is a plate-like member that is fixed to an end portion on the cylinder 101 side of the hydraulic damper 10 to be joined on the other side (movable side). The fixing portion 18 is provided with an insertion portion 13, thereby forming a male side portion of the clevis joint. The insertion part 13 is a plate-like member protruding from the fixing part 18.

  The insertion part 13 is inserted between the arm parts 12 and 14. The insertion part 13 is provided with a hole 131. The hole 131 has a spherical sliding member 132 on the inner peripheral surface. The spherical sliding member 132 has an inner surface shape corresponding to the outer surface shape of the spherical bearing 16 and is rotatably engaged with the spherical bearing 16.

  The rotation preventing member 17 is provided so as to protrude from the insertion portion 13 to the arm portion 12 side. The anti-rotation member 17 has a planar shaft along a direction (corresponding to the left-right direction in FIG. 3C) perpendicular to the direction D (see FIG. 2A) connecting the hydraulic damper 10 and the spherical bearing 16. A pair is provided at positions sandwiching 15.

  The tip of the rotation preventing member 17 contacts (substantially contacts) the arm portion 12. The tip of the rotation preventing member 17 has a spherical shape, and the vertical section of the tip of the rotation preventing member 17 shown in FIG. 3B shows the tip or arm portion of the rotation preventing member 17 from the center position of the spherical bearing 16. An arcuate portion having a radius substantially equal to a vertical distance R up to 12 (see FIG. 2A) is provided.

  In this joint structure 1, when the hydraulic damper 10 tries to rotate in the circumferential direction as shown by the arrow C in FIGS. The rotation is prevented by the rotation preventing member 17 in contact therewith. As described above, since the rotation prevention member 17 is disposed in a pair along the direction orthogonal to the direction D with the shaft 15 interposed therebetween, forward / reverse rotation in the circumferential direction is prevented.

  On the other hand, in the joint structure 1, the hydraulic damper 10 shown in FIG. 1 and FIG. Since the rotation preventing member 17 is attached to the insertion portion 13 provided on the hydraulic damper 10 side, even when the hydraulic damper 10 rotates in the left-right direction as shown in FIG. However, the shaft 15 is held along the direction orthogonal to the direction D connecting the hydraulic damper 10 and the spherical bearing 16. Therefore, even when the hydraulic damper 10 rotates in the left-right direction, the circumferential rotation of the hydraulic damper 10 is preferably prevented.

  Further, since the tip of the rotation preventing member 17 has the arc-shaped portion, the vertical rotation of the hydraulic damper 10 shown by the arrow A in FIGS. 1 and 2A is also allowed. That is, as shown in FIG. 4B, when the hydraulic damper 10 rotates in the vertical direction, the tip of the rotation preventing member 17 slides on the arm portion 12 in the circumferential direction of the arc-shaped portion and moves up and down. Directional rotation is allowed.

  In addition, as the joint structure 2 that joins the piston rod 102 and the structure 30 in FIG. 1, a normal clevis joint with a spherical bearing in which the rotation preventing member 17 is omitted in the joint structure 1 can be used.

  As described above, in the present embodiment, in the clevis joint using the spherical bearing 16, the circumferential direction of the hydraulic damper 10 with the direction D connecting the hydraulic damper 10 to be joined and the spherical bearing 16 as the rotation axis is used. The joint structure 1 that allows rotation in other directions while preventing rotation can be easily formed.

  Moreover, in this embodiment, the rotation prevention member 17 provided in the insertion part 13 of the male side of the clevis joint is brought into contact with the female arm part 12 of the clevis joint, so that the hydraulic damper 10 on the male side is Circumferential rotation can be prevented.

  When the anti-rotation member 17 is provided on the male side of the clevis joint in this way, the tip of the anti-rotation member 17 slides on the arm portion 12 if the arc-shaped portion described above is provided at the end of the anti-rotation member 17. Thus, the vertical rotation of the hydraulic damper 10 can be allowed. Further, by forming the tip of the rotation preventing member 17 in a spherical shape, the contact area with the arm portion 12 can be reduced, and the hydraulic damper 10 can be smoothly rotated in the left and right and up and down directions to suppress wear. There is.

  Further, since a pair of the rotation preventing members 17 are provided at positions where the shaft 15 is sandwiched on the plane along the direction orthogonal to the direction D, the forward and reverse rotations of the hydraulic damper 10 in the circumferential direction can be effectively prevented. Since the rotation preventing member 17 moves with the rotation of the hydraulic damper 10 in the left-right direction, the effect is not impaired during the rotation in the left-right direction.

  However, the present invention is not limited to this. For example, in the present embodiment, the rotation preventing member 17 is brought into contact with the arm portion 12, but may be brought into contact with the arm portion 14. Further, the arrangement and the number of the rotation preventing members 17 are not limited to those in the present embodiment, and it is sufficient that the rotation of the hydraulic damper 10 in the circumferential direction can be prevented. For example, the rotation preventing member 17 may be provided so as to protrude from the upper and lower surfaces of the insertion portion 13 on one side of the shaft 15 and to come into contact with the arm portions 12 and 14.

  Moreover, although the example which attaches the hydraulic damper 10 to the structures 20 and 30 was shown in this embodiment, it is not restricted to this. For example, an example in which the hydraulic damper 10 is attached to a weight for TMD (Tuned Mass Damper) is also conceivable. TMD is designed to reduce the shaking of the building by providing a weight on the top of the building and transmitting the shaking of the building to the weight by synchronizing the shaking cycle of the building and the shaking of the weight. By attaching the hydraulic damper 10 to this weight, the vibration of the weight can be absorbed. The joining structure 1 can also be applied to attachment of such a weight and the hydraulic damper 10.

  In addition, the joining structure 1 can be used for joining other than the hydraulic damper 10. For example, it can be applied to joining of a hydraulic cylinder or the like. In addition, the present invention can be applied to various types of joints that are desired to prevent circumferential rotation.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. 2nd Embodiment is an example which provides the rotation prevention member 17 in the female side part of a clevis joint. The second embodiment will be described with respect to differences from the first embodiment, and description of similar points will be omitted.

  5 and 6 are views showing a joint structure 1a according to a second embodiment of the present invention. 5A is a side view of the bonding structure 1a, and FIG. 5B is a view showing the upper surface of the bonding structure 1a. 6 (a) to 6 (c) are views showing a vertical section of the joint structure 1a, and are respectively a line a′-a ′, a line b′-b ′, and a line c′-c ′ in FIG. 5 (b). The cross section by is shown. In FIG. 5, the vertical, horizontal, and circumferential rotations of the hydraulic damper 10 are indicated by arrows A, B, and C as described above.

  In this joining structure 1a, the female side portion of the clevis joint formed by the fixing portion 11 and the arm portions 12 and 14 is provided in one (movable side) hydraulic damper 10 to be joined, and the fixing portion 18 and the insertion portion 13 are provided. The male side portion is provided on the structure 20 that is the other (fixed side) joining target.

  In the present embodiment, the rotation preventing member 17 is provided on the arm portion 12. That is, the rotation preventing member 17 is provided so as to protrude from the arm portion 12 toward the insertion portion 13. Further, a slight gap is provided between the tip of the rotation preventing member 17 and the insertion portion 13.

  The planar arrangement of the rotation preventing member 17 is the same as that in the first embodiment. That is, the anti-rotation member 17 is planar along a direction (corresponding to the left-right direction in FIG. 6C) orthogonal to the direction D (see FIG. 5A) connecting the hydraulic damper 10 and the spherical bearing 16. A pair is provided at a position sandwiching the upper shaft 15.

  In this joining structure 1a, when the hydraulic damper 10 rotates in the circumferential direction as indicated by the arrow C in FIG. 5A with the direction D as the rotation axis, the tip of the rotation preventing member 17 is inserted into the insertion portion. 13 and the subsequent rotation is prevented.

  Further, as in the first embodiment, the hydraulic damper 10 is allowed to rotate in the left-right direction as indicated by the arrow B in FIG. Since the anti-rotation member 17 is attached to the arm portion 12 provided on the hydraulic damper 10 side, even when the hydraulic damper 10 rotates in the left-right direction as shown in FIG. It moves with this rotation, and the state which pinched | interposed the shaft 15 along the direction orthogonal to the direction D which connects the hydraulic damper 10 and the spherical bearing 16 is maintained. Therefore, even when the hydraulic damper 10 rotates in the left-right direction, the circumferential rotation of the hydraulic damper 10 is preferably prevented.

  Further, since the tip of the rotation preventing member 17 is provided at a distance from the insertion portion 13, as shown in FIG. 7B, until the rotation prevention member 17 contacts the insertion portion 13, FIG. Rotation in the vertical direction of the hydraulic damper 10 shown by arrow A in FIG. In addition, it is also possible to further extend a rotation limit by providing the insertion part 13 with a cut as shown by a dotted line d in FIG.

  In the second embodiment, the same effect as in the first embodiment can be obtained. That is, the rotation of the hydraulic damper 10 in the circumferential direction can be prevented when the rotation preventing member 17 provided on the female arm portion 12 of the clevis joint comes into contact with the male insertion portion 13 of the clevis joint. . Further, by providing an interval between the tip of the rotation preventing member 17 and the insertion portion 13, the hydraulic damper 10 is allowed to rotate in the vertical direction until the rotation prevention member 17 contacts the insertion portion 13. it can.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these are naturally within the technical scope of the present invention. Understood.

1, 1a, 2; joint structure 11, 18; fixing part 12, 14; arm part 13; insertion part 15; shaft 16; spherical bearing 131; hole 132; spherical sliding member 10; Piston rod 103; tank 104; valve

Claims (2)

A joining structure for joining two joining objects,
A pair of arms provided on one joining target side;
A shaft provided between the arms,
A spherical bearing provided in the middle of the shaft;
An insertion portion provided on the other joining target side, inserted between the arm portions, and having a hole engaging with a spherical bearing;
An anti-rotation member for preventing any of the joining objects from rotating about a direction connecting the joining object and the spherical bearing as a rotation axis;
I have a,
The rotation preventing member protrudes from the insertion portion toward the arm portion, and is provided so that a tip substantially contacts the arm portion, preventing the rotation of the other joining target,
The vertical cross section of the tip of the rotation preventing member has an arcuate portion having a radius substantially equal to the vertical distance from the center position of the spherical bearing to the arm portion on the protruding side of the rotation preventing member. To join structure. Said anti-rotation member, the bonding structure of claim 1, wherein along a direction perpendicular to the direction, and which are located a pair at positions sandwiching the shaft plane.

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