JP5357940B2 - Grudge ball drive mechanism - Google Patents

Abstract

The invention provides a massaging ball driving mechanism with a simple structure. A supporting component (33) which supports multiple massaging balls (31) is rotatably supported by a rotating shaft (53). A direction which the supporting component rotates around the rotating shaft by force that a user applies to the multiple massaging balls is set as a positive direction (K1), a rotating direction opposite to the positive direction is set as a negative direction (K2). An elastic component (66) rotating corresponding to the supporting component rotating to the positive direction generates elastic deformation. The recovering force generated by the elastic deformation is applied to the supporting component as force to rotate the supporting component towards the negative direction (K2).

Description

  The present invention relates to a kneading ball drive mechanism having a plurality of kneading balls, a support member that supports the plurality of kneading balls, and a rotation shaft as a rotation center of the support member.

The kneading ball drive mechanism described in Patent Document 1 uses an individual motor that causes the kneading balls to perform the hitting massage operation and the kneading massage operation, a motor for moving the kneading balls in the height direction of the backrest, and the kneading balls. Has a motor to press against the body.

JP 2007-14467 A

Since the kneading ball drive mechanism has a large number of motors, the structure is complicated.
The present invention has been made in order to solve the above-described problems, and an object thereof is to provide a kneading ball driving mechanism having a simple structure.

  The kneading ball drive mechanism of the present invention is a kneading ball driving mechanism having a plurality of kneading balls, a support member that supports the plurality of kneading balls, and a rotation shaft as a rotation center of the support member. The elastic member provides a restoring force with respect to the rotation direction of the support member around the rotation axis, and the rotation direction toward the seating side of the user is the reverse direction. With the opposite rotation direction as the forward direction, the support member is elastically deformed as the support member rotates in the forward direction by a force applied to the plurality of kneading balls.

  One embodiment of the kneading ball drive mechanism includes a first gear that rotates integrally with the support member, a second gear that meshes with the first gear, and a support shaft that rotatably supports the second gear. The elastic member preferably applies the restoring force to the support shaft.

  One embodiment of the kneading ball drive mechanism includes a plurality of arms attached to the support member in a rotatable state, an arm rotation shaft as a rotation center of the plurality of arms with respect to the support member, and the plurality of the plurality of arms. A crank mechanism for swinging the kneading balls around the center axis of the arm, the plurality of arms supporting each of the plurality of kneading balls, and the rotating shaft driving the crank mechanism Is preferred.

  The present invention provides a kneading ball drive mechanism having a simple structure.

The perspective view which shows the perspective structure of the front side about the kneading ball drive mechanism of one Embodiment of this invention. The perspective view which shows the stagnation drive mechanism and the perspective structure of the periphery of the stagnation ball drive mechanism of the embodiment. The perspective view which shows the perspective structure of the back side of the state from which the control circuit was removed about the kneading ball drive mechanism of the embodiment. Sectional drawing which shows the cross-sectional structure which follows the AA line of FIG. 1 about the kneading ball drive mechanism of the embodiment. The side view which shows the side structure about the kneading ball drive mechanism of the embodiment.

(First embodiment)
With reference to FIG. 1, the structure of the kneading ball drive mechanism 1 is demonstrated.
The back of the chair type massage machine (not shown) includes a massaging ball driving mechanism 1 for massaging the back of the user seated on the massaging machine, a control circuit 70 for controlling the massaging ball driving mechanism 1, and a user's And an operation unit 80 for designating the operation of the kneading ball drive mechanism 1.

  The control circuit 70 supplies current to the height change motor 21, the stagnation drive motor 41 (see FIG. 2), and the tapping drive motor 51 (see FIG. 3) based on signals output from the operation unit 80. The operation unit 80 generates a signal for instructing a current to be supplied to the height changing motor 21, the kneading drive motor 41, and the tapping drive motor 51 according to an operation by the user.

Here, each direction about the kneading ball drive mechanism 1 is defined as follows.
(A) In the front view and the width direction X of the kneading ball drive mechanism 1, the direction from the left side to the right side is “right direction X1”, and the direction from the right side to the left side is “left direction X2.”
(B) In the front view and the height direction Y of the kneading ball drive mechanism 1, the direction from the lower side to the upper side is referred to as “upward direction Y1,” and the direction from the upper side to the lower side is referred to as “downward direction Y2.”
(C) In the front view and the depth direction Z of the kneading ball drive mechanism 1, the direction from the back side to the front side is referred to as “front direction Z1”, and the direction from the front side to the back side is referred to as “rear direction Z2.”

  The kneading ball drive mechanism 1 massages the user with a frame 10 constituting the main body of the mechanism 1, a height changing mechanism 20 for changing the height position of the frame 10 with respect to the backrest, and a pair of kneading balls 31. And a kneading ball support mechanism 30. In addition to this, the kneading ball drive mechanism 1 has a kneading drive mechanism 40 that massages each kneading ball 31, a tapping drive mechanism 50 that strikes each kneading ball 31 and performs a massage operation, and a kneading ball support mechanism 30 in the forward direction. And a rotation mechanism 60 for pushing back to Z1.

The configuration of the height changing mechanism 20 will be described.
The height changing mechanism 20 includes a height changing gear 24 that meshes with the rack shaft in the backrest, a height changing shaft 23 as a rotating shaft of the height changing gear 24, and a height for rotating the height changing shaft 23. And a change motor 21. In addition to this, there is a height change drive mechanism 22 that decelerates the rotation of the height change motor 21 and transmits it to the height change shaft 23.

  The height change motor 21 and the height change drive mechanism 22 are fixed to the frame 10. The height changing shaft 23 is supported by the frame 10 so as to be rotatable with respect to the frame 10. The central axis of the height changing shaft 23 is parallel to the width direction X of the frame 10. The height changing gear 24 is fixed to the height changing shaft 23.

The operation of the height changing mechanism 20 will be described.
(A) When the control circuit 70 receives a signal for changing the massage part of the user in the height direction Y from the operation unit 80, the control circuit 70 supplies a current corresponding to this signal to the height changing motor 21.
(B) The height changing motor 21 rotates upon receiving a current supplied from the control circuit 70.
(C) The height change drive mechanism 22 transmits the rotation of the height change motor 21 to the height change shaft 23.
(D) The height changing shaft 23 rotates the height changing gear 24 by the rotation transmitted from the height changing drive mechanism 22.
(E) The height changing gear 24 rotates with the height changing shaft 23 in a state where it is engaged with the rack shaft of the backrest, thereby moving the frame 10 in the upward direction Y1 or the downward direction Y2 with respect to the backrest.

The configuration of the kneading ball support mechanism 30 will be described.
The kneading ball support mechanism 30 includes a pair of kneading balls 31 that contact the user, a pair of support arms 32 that individually support the kneading balls 31, and a pair of support members 33 that individually support the support arms 32. Have Each kneading ball 31 has a hardness capable of giving an appropriate stimulus to the user. Each support arm 32 is positioned at a place symmetrical to the center in the width direction X of the kneading ball drive mechanism 1. The tip portion of each support arm 32 supports the kneading balls 31 in a state where the support arms 32 can rotate with respect to the respective support arms 32.

  Each support member 33 is supported by the tapping drive shaft 53 in a state where it can rotate with respect to the tapping drive shaft 53 (see FIG. 4) of the tapping drive mechanism 50. Each support arm 32 is supported by the stagnation drive shaft 44 in a state where it can rotate with respect to the stagnation drive shaft 44 (see FIG. 2) of the stagnation drive mechanism 40. The stagnation drive shaft 44 is supported by each support member 33 in a state where it can rotate with respect to each support member 33. That is, each support member 33 supports each support arm 32 via the stagnation drive shaft 44 in a rotatable state. Further, the kneading balls 31 are supported via the support arms 32.

The stagnation drive mechanism 40 will be described with reference to FIG.
The stagnation drive mechanism 40 rotates the stagnation drive shaft 44 that supports each support arm 32, the worm wheel 43 that rotates integrally with the stagnation drive shaft 44, the worm 42 that meshes with the worm wheel 43, and the worm 42. It has a stagnation drive motor 41. In addition to this, there are three inclined rings that convert the rotation of the kneading drive shaft 44 into the massage massage operation of the kneading balls 31, that is, an inner inclined ring 45, a right inclined ring 46, and a left inclined ring 47.

  The stagnation drive motor 41 is fixed to the frame 10. The worm 42 is fixed to the output shaft of the stagnation drive motor 41. The worm wheel 43 is fixed to the stagnation drive shaft 44. Each support arm 32 is supported by the stagnation drive shaft 44 so as to be capable of rotating with respect to the stagnation drive shaft 44 and moving in the axial direction with respect to the stagnation drive shaft 44. The base end portion of each support arm 32 is connected to a rod 55 that restricts the rotation of each support arm 32 around the stagnation drive shaft 44.

  The inner inclined ring 45 is fixed to the stagnation drive shaft 44 between the support arms 32. The right side surface of the inner inclined ring 45 is in contact with the outer surface of the right support arm 32 and is inclined with respect to the outer surface. The left side surface of the inner inclined ring 45 is in contact with the outer surface of the left support arm 32 and is inclined with respect to the outer surface.

  The right inclined ring 46 is fixed to the stagnation drive shaft 44 at a position adjacent to the right side of the right support arm 32. The left side surface of the right inclined ring 46 is in contact with the outer surface of the right support arm 32 and is inclined with respect to the outer surface.

  The left inclined ring 47 is fixed to the stagnation drive shaft 44 at a position adjacent to the left of the left support arm 32. The right side surface of the left inclined ring 47 is in contact with the outer surface of the left support arm 32 and is inclined with respect to the outer surface.

  The right side surface of the inner inclined ring 45 and the left side surface of the right inclined ring 46 are inclined parallel to each other and have a relationship of sandwiching the right support arm 32 from both sides. The degree of inclination of the right support arm 32 with respect to the depth direction Z changes as the inner inclined ring 45 and the right inclined ring 46 rotate. That is, the position of the tip portion of the support arm 32 in the width direction X changes.

  The left side surface of the inner inclined ring 45 and the right side surface of the left inclined ring 47 are inclined parallel to each other and have a relationship of sandwiching the left support arm 32 from both sides. The degree of inclination of the left support arm 32 with respect to the depth direction Z changes as the inner inclined ring 45 and the left inclined ring 47 rotate. That is, the position of the tip portion of the support arm 32 in the width direction X changes.

The operation of the stagnation drive mechanism 40 will be described.
(A) When the control circuit 70 in FIG. 1 receives from the operation unit 80 in FIG. 1 a signal for instructing the execution of the massaging massage operation by the massaging balls 31, the current corresponding to this signal is applied to the massaging drive motor 41. Supply.
(B) The stagnation drive motor 41 rotates upon receipt of a current supplied from the control circuit 70.
(C) The worm 42 rotates together with the output shaft of the stagnation drive motor 41.
(D) The worm wheel 43 rotates by meshing with the worm 42.
(E) The stagnation drive shaft 44 rotates together with the worm wheel 43.
(F) The inner inclined ring 45, the right inclined ring 46, and the left inclined ring 47 rotate together with the stagnation drive shaft 44.
(G) Since the rotation of the right support arm 32 around the stagnation drive shaft 44 is restricted by the right rod 55, the rotation of the inner tilt ring 45 and the right tilt ring 46 causes each tilt ring 45, 46 to move with the right support arm 32. The contact position changes. Then, as the contact position with each of the inclined rings 45 and 46 changes, it swings in the width direction X with the support portion by the stagnation drive shaft 44 as the center.
(H) Since the rotation of the left support arm 32 around the stagnation drive shaft 44 is restricted by the left rod 55, the left support arm 32 is in contact with each of the inclined rings 45 and 47 as the inner inclined ring 45 and the left inclined ring 47 rotate. The contact position changes. Then, as the contact position with each of the inclined rings 45 and 47 changes, it swings in the width direction X around the support portion by the stagnation drive shaft 44.
(I) Each kneading ball 31 performs a kneading massage operation as each support arm 32 swings.

With reference to FIG. 3 and FIG. 4, the structure of the tapping drive mechanism 50 will be described.
As shown in FIG. 4, the tapping drive mechanism 50 includes a pair of rods 55 that vibrate each support arm 32 around the drive shaft 44 and a pair of reciprocating linear motions of the rod 55 in the longitudinal direction M of each rod 55. And a crank mechanism 54.

  As shown in FIG. 3, in addition to each rod 55 and each crank mechanism 54, the tapping drive mechanism 50 includes a tapping drive shaft 53 that rotates the crank mechanism 54, and a tapping drive motor 51 that rotates the tapping drive shaft 53. A belt transmission mechanism 52 that transmits the rotation of the tapping drive motor 51 to the tapping drive shaft 53.

  The tapping drive motor 51 is fixed to the frame 10. The tapping drive shaft 53 is supported by the frame 10 and each support member 33 in a state where it can rotate with respect to the frame 10 and each support member 33. The rotation center of the tapping drive shaft 53 is parallel to the width direction X of the frame 10.

  The belt transmission mechanism 52 includes a first pulley (not shown) that receives rotation of the tapping drive motor 51, a second pulley 52A that rotates integrally with the tapping drive shaft 53, and rotation of the first pulley to the second pulley 52A. Belt 52B for transmission. The first pulley is fixed to the output shaft of the tapping drive motor 51. The second pulley 52 </ b> A is fixed to the end of the tapping drive shaft 53. The belt 52B is wound around each of the first pulley and the second pulley 52A.

Here, each direction about the hitting drive mechanism 50 is defined as follows.
(A) In the side view from the right direction X1 of the kneading ball drive mechanism 1 and in the longitudinal direction M of the rod 55, the direction from the connecting portion of the support arm 32 and the rod 55 toward the connecting portion of the crank mechanism 54 and the rod 55 A “crank mechanism direction M1” is defined, and a direction from the coupling portion between the crank mechanism 54 and the rod 55 toward the coupling portion between the support arm 32 and the rod 55 is defined as a “support arm direction M2”.
(B) In the first rotation direction J of the support arm 32 around the stagnation drive shaft 44 in a side view from the right direction X1 of the stagnation ball drive mechanism 1, the clockwise direction is “first forward direction J1” and counterclockwise. The direction is defined as “first reverse direction J2”.

The operation of the tapping drive mechanism 50 will be described with reference to FIG.
(A) When the control circuit 70 receives a signal for instructing execution of the hitting massage operation by the kneading balls 31 from the operation unit 80, the control circuit 70 supplies a current corresponding to this signal to the hitting drive motor 51.
(B) The tapping drive motor 51 rotates upon receipt of a current supplied from the control circuit 70.
(C) The belt transmission mechanism 52 in FIG. 3 transmits the rotation of the tapping drive motor 51 to the tapping drive shaft 53.
(D) Each crank mechanism 54 rotates as the hitting drive shaft 53 rotates.
(E) Each rod 55 reciprocates linearly in the longitudinal direction M as each crank mechanism 54 rotates.
(F) Each support arm 32 swings around the stagnation drive shaft 44 as each rod 55 reciprocates linearly. That is, when each rod 55 moves in the support arm direction M2, it rotates in the first reverse direction J2, and when each rod 55 moves in the crank mechanism direction M1, it rotates in the first forward direction J1.
(G) Each kneading ball 31 performs a tapping massage operation as the support arms 32 swing in the first forward direction J1 and the first reverse direction J2.

The configuration of the rotation mechanism 60 will be described with reference to FIGS.
As shown in FIG. 3, the rotation mechanism 60 includes a pair of first gears 61 that rotate together with the support members 33, and a pair of second gears 62 that mesh with the first gears 61. In addition, a rotation drive shaft 63 as the rotation center of each second gear 62, a rotation member 64 that rotates integrally with the rotation drive shaft 63, and a cover 65 that covers the rotation member 64 are provided.

  As shown in FIG. 5, the rotation mechanism 60 includes, in addition to the rotation drive shaft 63 and the rotation member 64, a spring 66 that applies a restoring force to the rotation drive shaft 63 via the rotation member 64, and an end of the spring 66. And a spring base 67 for attaching the part.

  The rotating member 64 includes a side wall 64A having a cylindrical shape, a bottom wall 64B that closes an opening portion of the side wall 64A on the second gear 62 side, and a receiving member 64C having a fan shape centered on the rotation drive shaft 63. . The bottom wall 64 </ b> B has an arcuate opening 64 </ b> D centered on the rotational drive shaft 63.

  The spring foundation 67 is fixed to the frame 10 through the opening 64D. One end of the spring 66 is fixed to the spring foundation 67. The other end of the spring 66 is fixed to the receiving member 64C.

  As shown in FIG. 4, each first gear 61 is formed as a part of each support member 33 and has an arc shape with the hitting drive shaft 53 as a central axis. As shown in FIG. 3, the rotation drive shaft 63 is supported by the frame 10 so as to be rotatable with respect to the frame 10. The direction of the rotation center line of the rotation drive shaft 63 is parallel to the width direction X. The rotating member 64 is fixed to the end of the rotation drive shaft 63. The cover 65 is fixed to the frame 10 so as to be rotatable with respect to the rotating member 64.

Here, each direction about the rotation mechanism 60 shown in FIG. 4 is defined as follows.
(A) Side view from the right direction X1 of the kneading ball drive mechanism 1 and in the second rotation direction K of the support member 33 around the tapping drive shaft 53, the clockwise direction is the “second forward direction K1” and the counterclockwise direction The direction is defined as “second reverse direction K2”.
(B) In the third rotation direction L from the right direction X1 of the kneading ball drive mechanism 1 and around the axis of the rotation drive shaft 63, the clockwise direction is the “third forward direction L1” and the counterclockwise direction is It is assumed that “third reverse direction L2”.

The operation of the rotation mechanism 60 will be described with reference to FIGS. 4 and 5.
(A) When the user is seated on the chair-type massage machine, the user applies a force to push each kneading ball 31 in the second forward direction K1 with the back (FIG. 4).
(B) Each support arm 32, each support member 33, and each first gear 61 rotate integrally with the rotation of each kneading ball 31 in the second forward direction K1 (FIG. 4).
(C) As each first gear 61 rotates in the second forward direction K1, each second gear 62 rotates integrally with the rotation drive shaft 63 in the third reverse direction L2 (FIG. 4).
(D) The rotating member 64 rotates in the third reverse direction L2 integrally with the rotation drive shaft 63 (FIG. 5).
(E) The spring 66 is compressed between the receiving member 64C and the spring base 67 as the rotating member 64 (receiving member 64C) rotates in the third reverse direction L2 (FIG. 5).
(F) When the spring 66 is compressed by the receiving member 64C and the spring foundation 67, the spring 66 applies a restoring force to rotate the third forward direction L1 to the rotating member 64 (FIG. 5).
(G) The rotation member 64 transmits the restoring force of the spring 66 to the rotation drive shaft 63 (FIG. 5).
(H) The rotational drive shaft 63 transmits the rotational force acting in the third forward direction L1 to each second gear 62 (FIG. 4).
(I) Each second gear 62 transmits a rotational force acting in the third forward direction L1 to each first gear 61 (FIG. 4).
(J) Each first gear 61 converts the rotational force transmitted from each second gear 62 into a rotational force in the second reverse direction K2 (FIG. 4).
(K) Each support member 33 transmits the rotational force acting in the second reverse direction K2 to each support arm 32 (FIG. 4).
(L) Each support arm 32 transmits the rotational force acting in the second reverse direction K2 to each kneading ball 31 (FIG. 4).
(M) Each kneading ball 31 is pressed against the back of the user by the rotational force transmitted from each support arm 32 (FIG. 4). And when a user leaves a chair type massage machine, in the 2nd rotation direction K, it rotates to the 2nd reverse direction K2 to the maximum.

(Effect of embodiment)
The kneading ball drive mechanism 1 of the present embodiment has the following effects.
(1) The kneading ball drive mechanism 1 includes a spring 66 that applies a restoring force to the rotation drive shaft 63 as the rotation center of each support member 33. The spring 66 is elastically deformed by the force applied to each kneading ball 31 as each support member 33 rotates in the second forward direction K1.

  According to this configuration, the restoring force of the spring 66 according to the amount of rotation of each kneading ball 31 in the second forward direction K <b> 1 acts on each kneading ball 31. For this reason, the kneading balls 31 are pressed against the user by the rotational force corresponding to the restoring force of the spring 66. For this reason, it becomes possible to abbreviate | omit the motor for pressing each kneading ball 31 to a user.

  (2) The kneading ball drive mechanism 1 rotates the pair of first gears 61 that rotate integrally with the support members 33, the pair of second gears 62 that mesh with the first gears 61, and the second gears 62. And a rotational drive shaft 63 that supports the same. The spring 66 applies a restoring force to the rotation drive shaft 63.

  According to this configuration, since the restoring force of one spring 66 is transmitted to each support member 33 that supports each kneading ball 31 via the rotating member 64 and the rotation drive shaft 63, each kneading ball 31 is individually spring-loaded. As a result, the number of springs is reduced as compared with the configuration in which the spring is pressed against the user.

  (3) The kneading ball drive mechanism 1 includes a pair of support arms 32 that are attached to the support members 33 in a rotatable state, and a kneading drive shaft 44 as a rotation center of the support arms 32 with respect to the support members 33. The crank mechanism 54 for swinging the kneading balls 31 around the kneading drive shaft 44 is provided. Each support arm 32 supports each kneading ball 31. The crank mechanism 54 swings each support arm 32 by the rotational force transmitted from the tapping drive shaft 53.

  According to this configuration, the tapping drive shaft 53 inputs the rotation shaft of each support member 33 for pressing each kneading ball 31 and the rotational force for tapping each kneading ball 31 to perform a massage operation to each support member 33. It plays a role as a rotation axis. For this reason, the configuration of the kneading ball drive mechanism 1 is simplified as compared with a configuration in which the rotation shaft serving as the former rotation shaft and the rotation shaft serving as the latter rotation shaft are individually provided. .

(Other embodiments)
The present invention includes embodiments other than the above-described embodiment. Hereinafter, the modification of the said embodiment as other embodiment of this invention is shown. The following modifications can be combined with each other.

-The kneading ball support mechanism 30 of the said embodiment (FIG. 1) has the two kneading balls 31. FIG. On the other hand, the kneading ball support mechanism 30 of the modified example has three or more kneading balls 31.
-The rotation mechanism 60 of the said embodiment (FIG. 5) has the spring 66 as an elastic member. On the other hand, the rotation mechanism 60 of a modification has rubber | gum or another elastic member as an elastic member.

  -The rotation mechanism 60 of the said embodiment (FIG. 5) has the spring 66 which provides a restoring force to the rotational drive shaft 63 via the receiving member 64C. On the other hand, the rotation mechanism 60 of the modified example includes, as another configuration having a function according to the spring 66 and the receiving member 64C, a connecting member that connects the support members 33 and a spring that applies a restoring force to the connecting member. Have.

  -This invention can also be applied to the other kneading ball drive mechanisms other than the kneading ball driving mechanism 1 located in the backrest of a chair type massage machine. Another kneading ball driving mechanism includes a kneading ball driving mechanism located in an armrest or footrest of a chair type massage machine. In short, as long as it is a kneading ball drive mechanism having a plurality of kneading balls for massaging operation, a support member for supporting the plurality of kneading balls, and a rotation shaft as the rotation center of the support member, The present invention can also be applied to this.

  DESCRIPTION OF SYMBOLS 1 ... Grudge ball drive mechanism, 31 ... Grudge ball, 32 ... Support arm (arm), 33 ... Support member, 44 ... Grudge drive shaft (arm rotation shaft), 53 ... Tapping drive shaft (rotation shaft), 54 ... Crank mechanism , 61 ... 1st gear, 62 ... 2nd gear, 63 ... Rotation drive shaft (support shaft), 66 ... Spring (elastic member).

Claims (3)

In the kneading ball drive mechanism having a plurality of kneading balls, a support member that supports the plurality of kneading balls, and a rotation shaft as a rotation center of the support member,
An elastic member for applying a restoring force to the support member;
In the elastic member, the rotation direction of the support member around the rotation axis is a reverse direction in the rotation direction toward the seating side of the user, and the rotation direction opposite to the reverse direction is a forward direction. A kneading ball drive mechanism characterized by elastic deformation as the support member rotates in the forward direction by a force applied to a ball. In the kneading ball drive mechanism according to claim 1,
A first gear that rotates integrally with the support member;
A second gear meshing with the first gear;
A support shaft that rotatably supports the second gear,
The kneading ball drive mechanism, wherein the elastic member imparts the restoring force to the support shaft. In the kneading ball drive mechanism according to claim 1 or 2,
A plurality of arms attached to the support member in a rotatable state, an arm rotation shaft as a rotation center of the plurality of arms with respect to the support member, and the plurality of kneading balls swinging around the arm rotation shaft A crank mechanism for
The plurality of arms support each of the plurality of massaging balls,
The kneading ball drive mechanism, wherein the rotating shaft drives the crank mechanism.

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