JP5879812B2 - Ceiling suspension device - Google Patents

Description

  The present invention relates to a ceiling suspension device that suspends a lighting fixture or the like from a ceiling, and particularly suppresses rolling caused by earthquakes, strong winds, etc., or shaking of a ship caused by waves, etc. The present invention relates to a hanging device for a lighting fixture. In this specification, “ceiling part” means a part where a lighting fixture or the like is suspended, and not only a ceiling part of a room, hallway, hall, etc. in a building, but also a room, hallway, hall, etc. in a ship, for example. Includes ceilings such as decks.

Conventionally, as this type of suspension device, for example, a configuration as disclosed in Patent Document 1 has been proposed.
In this conventional configuration, a suspended ceiling member that supports equipment is suspended and supported via suspension bolts on the ceiling of the building. Between the end of the suspended ceiling member and the side wall of the building, a stretchable deformation absorbing member for absorbing a relative displacement in the lateral direction of the suspended ceiling member is interposed. Between the suspended ceiling member and the ceiling portion, a plurality of damping dampers for suppressing the swinging of the suspended ceiling member in the lateral direction are installed so as to extend in an inclined manner. And when rocking | fluctuation arises in a suspended ceiling member by an earthquake, when the acceleration is in the assumption range, it is supposed that rocking | fluctuation of a suspended ceiling member will be suppressed by a deformation | transformation absorption member and a damping damper.

JP-A-2005-240538

  However, in this conventional configuration, the vibration damping damper can only cope with movement in one direction that is the axial direction thereof, and therefore, when the swinging direction of the suspended ceiling member is a direction other than the one direction, sufficient swinging is achieved. Deterrence effect may not be obtained. In addition, if the suspended ceiling member swings greatly due to an unexpected large earthquake, an excessive compressive load acts on the damping damper, and the damping damper is damaged due to buckling, which causes the suspension ceiling member to swing. As a result, the suspended ceiling member may be damaged due to a collision with a wall or the like.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose is to suspend the suspension of the suspended body such as a lighting fixture, and to improve the convergence of the suspended body from the swinging state to the stationary state. Is to provide.

To achieve the above object, the present invention is, in the lower device suspended ceiling portion suspended from the suspended body to be via a plurality of hanging the lower member to the ceiling portion of the structure such as a building, the said ceiling portion the attached to non with restricted absorption means, the pair of the hanging portion material for absorbing energy due to the swing displacement between the object to be suspended under body and the ceiling portion between the object to be suspended below body And the absorbing means is interposed between the first member and the suspended body or the ceiling portion . Here, the non-restraining absorbing means refers to an absorbing means whose energy absorption direction is not limited to one direction. Further, the swing displacement between the ceiling portion and the suspended body in the present invention is hereinafter referred to as the swing of the suspended body.

  Accordingly, in the ceiling suspension apparatus of the present invention, when an earthquake occurs, the suspension member is allowed to tilt by the permission means, and the suspended body is swung laterally. Therefore, it can suppress that the shake at the time of an earthquake is directly transmitted from a ceiling part to a suspended body. Further, when the suspended body swings, the energy associated with the swinging of the suspended body is absorbed by the absorbing means. For this reason, the suspended body can be quickly converged from the swinging state to the stationary state. And since an absorption means is non-restraint, unlike the prior art, a multi-directional rock | fluctuation can be absorbed without the damage of an absorption means.

In the configuration described above, the hanging lower member together constituting the rigid, may be provided permitting means for permitting the tilting of the suspended lower member.
In the configuration described above, the allowable unit may is interposed a spherical bearing between the both ends and the ceiling portion and the object to be suspended underneath of the suspended lower member.

The said structure WHEREIN: The said absorption means is good in it being an elastic body.
The said structure WHEREIN: The said absorption means is good in it being a viscoelastic body.
The said structure WHEREIN: The said 1st member is good in it being a displacement member erected between a pair of said suspension members.

In the configuration described above, it may be interposed a spherical bearing between the displacement member and said absorbing means.
The said structure WHEREIN: The said 1st member is good in it being a cord stretched between a pair of said suspension members .
In the configuration described above, the absorbing means, said cord being moved in the extending direction of the own with the swinging displacement between the object to be suspended under body and the ceiling portion, the resistance application for imparting frictional resistance to the search It is good that it is the said frictional resistance provision means provided with the member. Here, the movement of the cord indicates relative movement with respect to the suspended body.

  As described above, according to the present invention, it is possible to quickly converge the swing state of the suspended body to the stationary state.

Sectional drawing which shows the suspension apparatus of the ceiling part of 1st Embodiment. Sectional drawing in the 2-2 line of FIG. Sectional drawing which shows the operation state of FIG. The principal part sectional drawing which shows the suspension apparatus of the ceiling part of 2nd Embodiment. The fragmentary sectional view in the 5-5 line | wire of FIG. Sectional drawing which shows the suspension apparatus of the ceiling part of 3rd Embodiment. Sectional drawing in the 7-7 line | wire of FIG. The principal part perspective view which expands and shows the structure of the attachment part of the rope in the suspension apparatus of FIG. The principal part perspective view which expands and shows the structure of the guide part of the rope in the suspension apparatus. The principal part perspective view which expands and shows the structure of the frictional resistance provision part to the rope in the suspension apparatus. Sectional drawing which shows the operation state of FIG. Sectional drawing which shows the suspension apparatus in the building of 4th Embodiment. Sectional drawing which shows the example of a change of 3rd Embodiment. Sectional drawing which shows another example of a change of 3rd Embodiment. Sectional drawing which shows another modification of 3rd Embodiment.

(First embodiment)
Below, 1st Embodiment of the suspension device of the ceiling part which actualized this invention is described according to FIGS. 1-3.

  As shown in FIG.1 and FIG.2, in the suspension apparatus of this embodiment, the suspended body 22 which consists of a large illuminating device etc. in the ceiling part 21 in rooms, hallways, halls, etc. of structures, such as a building and a ship. However, the suspension is supported via a plurality of suspension members 23 made of a rigid body such as a metal rod or a metal pipe. Between the upper end part of each suspending member 23 and the ceiling part 21, and between the lower end part of each suspending member 23 and the suspended body 22, as a permissive means for permitting the tilting of the suspending member 23. Spherical bearings 24A and 24B are provided. The upper spherical bearing 24 </ b> A is formed on a substantially hemispherical spherical body 25 attached to the upper end of the suspension member 23 and a support bracket 26 below the ceiling portion 21 so as to engage with the spherical body 25. And a support seat 27. The lower spherical bearing 24B includes a substantially hemispherical spherical body 28 attached to the lower end of the suspension member 23, and a support seat formed on the upper surface of the suspended body 22 so as to engage with the spherical body 28. 29.

  In the vicinity of the upper surface of the suspended body 22, there is a displacement member 30 made of a rigid body such as a metal rod or a metal pipe between each pair of suspended members 23 arranged side by side in the horizontal direction in FIG. Is suspended through the joint 31 so as to be relatively displaceable in the left-right direction of the suspended body 22. Each joint 31 includes a planar substantially horizontal U-shaped mounting bracket 32 fixed to both ends of the displacement member 30, a pair of support brackets 33 mounted on the outer periphery in the vicinity of the lower end of each hanging member 23, It is comprised from a pair of connecting shaft 34 extended in the horizontal direction interposed between the both side walls of the metal fitting 32, and each support metal fitting 33. As shown in FIG. As shown in FIG. 3, when each suspension member 23 is tilted by the swinging of the suspended body 22, the displacement member 30 is centered on the connection shaft 34 of both joints 31 with respect to each suspension member 23. It is relatively rotated and is relatively displaced in the lateral direction while maintaining a parallel state with respect to the suspended body 22.

  As shown in FIGS. 1 and 2, a plate-like absorbing member 35 serving as an absorbing means for absorbing energy associated with the swinging of the suspended body 22 between the displacement member 30 and the suspended body 22. Is intervened. The absorbing member 35 is composed of a viscoelastic body such as special butyl rubber, and the absorbing member 35 can be deformed in the horizontal direction and the thickness direction in FIG. It has a function. The absorbing member 35 is attached to the upper surface of the suspended body 22 in a state where the absorbing member 35 is tightly fixed between the pair of upper and lower sandwiching plates 36 and 37. A pair of connecting plates 38 project from the upper surface of the upper sandwiching plate 36, and long holes 38 a extending in the vertical direction are formed in both connecting plates 38. The displacement member 30 is provided with a connecting pin 39 that can be engaged with the long holes 38 a of both the connecting plates 38. Then, both end portions of the connecting pin 39 are engaged with the long holes 38 a of both connecting plates 38, so that the displacement member 30 is integrated with the upper sandwiching plate 36 of the absorbing member 35 in the extending direction of the displacement member 30. It is connected so as to be movable and relatively movable in the vertical direction.

Next, the operation of the ceiling part suspension apparatus configured as described above will be described.
In this ceiling suspension device, the suspended body 22 is suspended and supported in a stationary state via a plurality of suspension members 23 as shown in FIGS. In this state, each suspension member 23 extends in parallel to the vertical direction, and the displacement member 30 installed between each pair of suspension members 23 extends in parallel to the suspended body 22 and is suspended. It arrange | positions so that it may extend in the direction orthogonal to the lower member 23. FIG. For this reason, as shown in FIG. 1, the absorbing member 35 made of a viscoelastic body interposed between the displacement member 30 and the suspended body 22 is held in an original state having a rectangular cross section without being elastically deformed. Has been.

  When a swinging force in the lateral direction is applied to the suspended body 22 due to an earthquake or a wave in the suspended state of the suspended body 22, as shown in FIG. 3, the suspension members 23 are tilted by the spherical bearings 24A and 24B. Is allowed, and the suspended body 22 is swung in the lateral direction while maintaining a parallel state with the ceiling portion 21. Therefore, unlike the case where the suspended body 22 is fixed to the ceiling portion 21 in a restrained state, the vibration of the ceiling portion 21 is not directly transmitted to the suspended body 22 via the suspended member 23, and the suspended body 22 is suspended. There is no possibility that a large load is applied to the lower body 22 or the connecting portion between the suspended member 23 and the suspended body 22.

  Further, when the suspended body 22 is swung, as shown in FIG. 3, the displacement member 30 is relatively displaced in the lateral direction while keeping the parallel state with respect to the suspended body 22 as the suspension member 23 is tilted. Is done. Due to the displacement of the displacement member 30, the absorbing member 35 made of a viscoelastic body is deformed against its own viscoelastic force, and the energy accompanying the swing of the suspended body 22 is absorbed and attenuated. As a result, the swinging of the suspended body 22 is suppressed, and the convergence time is shortened from the swinging state of the suspended body 22 to the stationary state. Therefore, if the displacement member 30 is installed between the suspension members 23 so that the displacement member 30 is extended in a direction in which the building easily shakes, the swing of the suspended body 22 can be minimized, Breakage of the lighting fixture can be prevented.

Therefore, according to this embodiment, the following effects can be obtained.
(1) In this ceiling part suspension device, a spherical bearing 24A having a permissible structure for permitting the suspension member 23 to tilt between the suspension member 23, the ceiling part 21, and the suspended body 22 is provided. , 24B are provided. For this reason, even if the ceiling part 21 rocks | fluctuates, rocking | fluctuation of the suspended body 22 can be suppressed small.

  (2) In this ceiling hanging device, a non-directional absorbing member 35 for absorbing energy associated with the swing of the suspended body 22 is provided between the ceiling portion 21 and the suspended body 22. Is provided. For this reason, when a rocking displacement occurs between the ceiling portion 21 and the suspended body 22, the absorbing member 35 can be deformed in any of the thickness direction, the oblique direction, and the outer circumferential direction. Therefore, the rocking energy acting on the suspended body 22 is effectively absorbed and attenuated. For this reason, not only can the swing of the suspended body 22 be prevented from being amplified, but also the suspended body 22 can be quickly converged from the swinging state to the stationary state. Therefore, damage due to collision with the wall or the like of the suspended body 22 can be prevented.

  (3) In this ceiling part suspension device, spherical bearings 24 </ b> A and 24 </ b> B are interposed between both ends of the suspension member 23, the ceiling part 21, and the suspended body 22. For this reason, tilting of the suspending member 23 can be permitted with a simple structure.

  (4) In the suspension device for the ceiling portion, the absorption structure is constituted by an absorption member 35 made of a viscoelastic body. For this reason, while being able to simplify a structure and assembly | attachment by making a number of parts into the minimum, the energy accompanying rocking | fluctuation of the to-be-suspended body 22 can be absorbed effectively by a viscoelastic effect | action. In addition, the energy absorption effect can be easily grasped according to the material and shape of the viscoelastic body.

  (5) In this ceiling suspension device, a displacement member 30 is installed between a pair of suspension members 23, and an absorbing member 35 made of a viscoelastic body is disposed between the displacement member 30 and the suspended body 22. Intervened. For this reason, when the suspension member 23 is tilted during swinging of the suspended body 22, the displacement member 30 is displaced relative to the suspended body 22, and the absorbing member 35 resists its viscoelastic force. Deformed. Therefore, the energy accompanying the swing of the suspended body 22 can be absorbed effectively.

(Second Embodiment)
Next, a second embodiment of a ceiling suspension apparatus embodying the present invention will be described with a focus on the differences from the first embodiment.

  In the second embodiment, as shown in FIG. 4, both end portions of the displacement member 30 are rotatably attached to the mounting bracket 32 of the joint 31 via the connecting shaft 41. For this reason, both end portions of the displacement member 30 are connected to the pair of suspension members 23 so as to be rotatable relative to each other about the connection shaft 41 and the connection shaft 34 extending in directions orthogonal to each other. Movement in all directions is allowed.

  As shown in FIGS. 4 and 5, a spherical bearing 42 is interposed between the upper sandwiching plate 36 and the displacement member 30 of the absorbing member 35 made of a viscoelastic body disposed on the suspended body 22. ing. The spherical bearing 42 is attached via a support ring 44 to a lower surface of the outer periphery of the displacement member 30 so as to engage with the spherical body 43 projecting on the upper sandwiching plate 36 of the absorbing member 35. The spherical concave cap body 45 is formed. For this reason, the spherical bearing 42 can follow the displacement of the suspended body 22 in all directions.

  When the suspended body 22 is swung in the extending direction of the displacement member 30 installed between the pair of suspension members 23, the absorbing member 35 is elastically deformed as in the case of the first embodiment. Thus, the energy accompanying the swinging of the suspended body 22 is absorbed. Further, as shown in FIG. 5, when the suspended body 22 is swung in a direction crossing the extending direction of the displacement member 30, the upper sandwiching plate 36 of the absorbing member 35 tilts via the spherical bearing 42. Is done. For this reason, the absorbing member 35 is elastically deformed in the same manner as described above, and the energy accompanying the swing of the suspended body 22 is absorbed.

Therefore, according to the second embodiment, in addition to the effects described in (1) to (5) in the first embodiment, the following effects can be obtained.
(6) In this ceiling part suspension device, the displacement member 30 is connected to the suspension member 23 so as to be relatively rotatable about axes orthogonal to each other, and the displacement member 30 and the viscoelastic body. A spherical bearing 42 is interposed between the absorbing member 35 and the absorbing member 35. For this reason, not only when the suspended body 22 is swung in the extending direction of the displacement member 30 installed between the pair of hanging members 23, but also in the direction intersecting the extending direction of the displacement member 30. Even in this case, the absorbing member 35 is elastically deformed, and the energy accompanying the swinging of the suspended body 22 can be absorbed. Therefore, no matter which direction the building swings, the swing energy can be absorbed smoothly.

(Third embodiment)
Next, a description will be given of a third embodiment of a ceiling part suspending apparatus embodying the present invention, centering on differences from the first embodiment.

  In the third embodiment, as shown in FIGS. 6 and 7, as an absorbing means for absorbing the energy accompanying the swing of the suspended body 22, a frictional resistance against the swing of the suspended body 22 is provided. A friction resistance application mechanism 46 is provided as a friction resistance application means. The frictional resistance imparting mechanism 46 includes a cable 47 stretched between a plurality of suspension members 23 so as to move in the extension direction of the suspended body 22 in accordance with the swing of the suspended body 22, and friction to the cable 47. It is comprised from the resistance provision member 48 which provides resistance.

  As shown in FIGS. 6 and 8, among the plurality of hanging members 23 arranged in parallel in the length direction of the suspended body 22, a rope 47 is provided near the upper ends of the two outer hanging members 23. Fastening members 49 for fastening both end portions of the two are attached via a fitting 50 so as to be rotatable (in the direction of the arrow). As shown in FIGS. 6 and 9, a guide roller 51 for guiding an intermediate portion of the rope 47 is rotatably attached via a mounting bracket 52 in the vicinity of the lower ends of the two inner suspension members 23. ing. The rope 47 is stretched between the plurality of suspension members 23 so as to form a substantially inverted trapezoidal shape by the fastening member 49 and the guide roller 51.

  As shown in FIGS. 6 and 10, the resistance applying member 48 clamps the rope 47 between the first pinching plate 53 fixed to the upper surface of the suspended body 22 and the first pinching plate 53. In addition, the second pressing plate 55 is arranged on the first pressing plate 53 via a pair of guide pins 54 so as to be movable up and down. A spring 57 for pressing and urging the second clamping plate 55 toward the first clamping plate 53 is interposed between the washer 56 at the tip of each guide pin 54 and the second clamping plate 55. . Accordingly, the rope 47 is given resistance in all directions within the clamping surface between the first and second clamping plates 55.

  And as shown in FIG. 11, each suspension member 23 is tilted by generation | occurrence | production of the rocking | swiveling displacement between the ceiling part 21 and the suspended body 22, and the suspended body 22 is the parallel installation direction of the suspended member 23 Is swung to one side, the rope 47 is moved relative to the swinging direction of the suspended body 22 along the extension direction thereof. Further, when the suspended body 22 is swung in a direction that intersects with the direction in which the suspension members 23 are juxtaposed, the rope 47 is moved in a direction that intersects with its own extension direction. At this time, a frictional resistance is imparted to the rope 47 between both the pinching plates 53 and 55 of the resistance imparting member 48, and energy associated with the swinging of the suspended body 22 is absorbed. For this reason, the suspended body 22 is quickly converged from the swinging state to the stationary state.

Therefore, according to the third embodiment, in addition to the effects described in (1) and (2) in the first embodiment, the following effects can be obtained.
(7) In this suspension device for the ceiling portion, the frictional resistance applying mechanism 46 constituting the energy absorbing means applies the cable 47 stretched between the suspension members 23 and the frictional resistance to the cable 47. It is comprised from the resistance provision member 48. FIG. For this reason, the frictional resistance applying mechanism 46 can be easily configured using inexpensive parts.

(Fourth embodiment)
Next, a description will be given of a fourth embodiment of a ceiling part suspending apparatus embodying the present invention, centering on differences from the first embodiment.

  In the fourth embodiment, as shown in FIG. 12, the resistance imparting member 48 of the frictional resistance imparting mechanism 46 is supported on the upper surface of the suspended body 22 via the support member 58 so as to be rotatable and vertically movable. The pressing roller 59 and a spring 60 for pressing the pressing roller 59 against the rope 47 are configured. Then, when the rope 47 is moved in the extension direction along with the swing of the suspended body 22 when an earthquake occurs, a frictional resistance is applied to the rope 47 by the pressing roller 59 and the suspended body 22 is suspended. The energy accompanying the rocking of is absorbed.

Therefore, according to the fourth embodiment, substantially the same effects as those described in (1), (2) and (7) in the first and third embodiments can be obtained.
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.

  In the first and second embodiments, the displacement member 30 is installed between the pair of suspension members 23 in the vicinity of the lower surface of the ceiling portion 21, and the viscoelastic material is interposed between the displacement member 30 and the ceiling portion 21. Interposing an absorbing member 35 made of, or the like.

In the first and second embodiments, the absorbing member 35 is made of an elastic material by interposing, for example, silicone rubber between the sandwich plates 36 and 37.
In the third embodiment, as shown in FIG. 13, among the plurality of hanging members 23 arranged in parallel in the length direction of the suspended body 22, the vicinity of the upper ends of the two inner hanging members 23 The fixing member 49 is attached to the guide roller 51 and the guide roller 51 is attached in the vicinity of the lower ends of the two outer suspension members 23. Then, the rope 47 is stretched between the plurality of suspension members 23 by the fastening member 49 and the guide roller 51 so as to form a substantially trapezoidal shape in front.

  In the third embodiment, as shown in FIG. 14, among the plurality of suspension members 23 arranged in parallel in the length direction of the suspended body 22, the vicinity of the lower ends of the two outer suspension members 23 The fixing member 49 is attached to the guide roller 51 and the guide roller 51 is attached in the vicinity of the upper ends of the two inner suspension members 23. Then, the rope 47 is stretched between the plurality of suspension members 23 by the fastening member 49 and the guide roller 51 so as to form a substantially trapezoidal shape in front. Further, a resistance applying member 48 for applying a frictional resistance to the rope 47 is disposed on the lower surface of the ceiling portion 21.

  In the third embodiment, as shown in FIG. 15, among the plurality of suspension members 23 arranged in parallel in the length direction of the suspended body 22, the vicinity of the lower ends of the two inner suspension members 23 The fixing member 49 is attached to the guide roller 51, and the guide roller 51 is attached in the vicinity of the upper ends of the two outer suspension members 23. Then, the fastening member 49 and the guide roller 51 are used to stretch the rope 47 so as to form a substantially inverted trapezoidal shape between the plurality of suspension members 23. The resistance applying member 48 is disposed on the lower surface of the ceiling portion 21.

In the modification of the third embodiment shown in FIGS. 13 to 15 described above, the resistance applying member 48 is configured by the pressing roller 59 of the fourth embodiment.
In the modification examples shown in the third embodiment, the fourth embodiment, and FIGS. 13 to 15, the fixing member 49 for fixing both ends of the rope 47 is used as the lower surface of the ceiling portion 21 or the upper surface of the suspended body 22. Attach to.

  In the third embodiment, the fourth embodiment, and the modification examples shown in FIGS. 13 to 15, the guide roller 51 for guiding the rope 47 is provided on the suspended body 22 corresponding to the end of the suspension member 23. Attach to the upper surface or the lower surface of the ceiling 21.

  -In each said embodiment, it concludes in suspension devices, such as a suspended body 22 different from a lighting fixture, for example, a suspended ceiling.

  DESCRIPTION OF SYMBOLS 21 ... Ceiling part of structures, such as a building, 22 ... Suspended body, 23 ... Suspended member, 24A, 24B ... Spherical bearing which comprises the permissible structure as an allowance means, 25, 28 ... Spherical body, 27, 29 ... Support seat 30 ... Displacement member 31 ... Joint 35 ... Absorbing member constituting absorbing structure as absorbing means, 42 ... Spherical bearing, 43 ... Spherical body, 45 ... Cap body, 46 ... Friction as friction resistance applying means Resistance applying mechanism, 47 ... rope, 48 ... resistance applying member, 49 ... fastening member, 51 ... guide roller, 53 ... first pressing plate, 55 ... second pressing plate, 57 ... spring, 59 ... pressing roller, 60 ... Spring.

Claims (9)

In a suspension device in a building in which a suspended body is suspended via a plurality of suspension members on the ceiling of a structure such as a building,
And unconstrained absorbent means for absorbing energy due to the swing displacement between the object to be suspended under body and the ceiling section between the object to be suspended under body and the ceiling portion,
A first member attached to the pair of suspension members,
A ceiling part suspension apparatus , wherein the absorbing means is interposed between the first member and the suspended body or the ceiling part . The suspension device for a ceiling part according to claim 1, wherein the suspension member is formed of a rigid body and is provided with an allowance unit that allows the suspension member to tilt. The permissible means under device suspended in the ceiling according to claim 2, characterized in that the interposed a spherical bearing between the both ends and the ceiling portion and the object to be suspended underneath of the suspended lower member. The said suspension means is an elastic body, The suspension part of the ceiling part as described in any one of Claims 1-3 characterized by the above-mentioned. The said suspension means is a viscoelastic body, The suspension part of the ceiling part as described in any one of Claims 1-4 characterized by the above-mentioned. Wherein the first member is under device suspended in the ceiling according to any one of claims 1 to 5, characterized in that a displacement member that is bridged between a pair of the suspension members. The suspension device for a ceiling part according to claim 6, wherein a spherical bearing is interposed between the displacement member and the absorbing means. The ceiling device according to claim 1 or 2, wherein the first member is a cable stretched between a pair of the suspension members . It said absorbing means, comprising said cord being moved in the extending direction of the own with the swings between the ceiling portion and the object to be suspended under body, and a resistance application member for applying a frictional resistance to the search It is a frictional resistance provision means, The suspension part of the ceiling part of Claim 8 characterized by the above-mentioned.

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