JP6727030B2 - Closer device for sliding doors - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door closer device provided to reduce shock and noise generated when a sliding door is opened and closed.

A closing device for a sliding door is attached to the sliding door in order to mitigate the impact and noise caused when the door body of the sliding door collides with a door frame or a door stop.

A general sliding door closer device is also called a self-closing device, and is provided with a closing elastic member such as a coil spring for closing the door body. When the door body of the sliding door is pushed by hand and moved along the rail in the closing direction, the biasing force of the closing elastic member such as the coil spring in the closing direction acts on the door body at a certain position. After that, the door body automatically moves in the closing direction by the urging force, and stops at the position where the sliding door is completely closed.

At this time, in order to prevent a large urging force of the closing elastic member from acting on the door main body at once, so that the door main body does not collide with the door frame or the like, a buffer mechanism (damper) that suppresses the moving speed of the door main body in the closing direction. ) Is provided (for example, see Patent Document 1).

JP2012-136831A

According to the above-described sliding door closer device, when the door body is strongly pushed by hand to close it, the momentum may exceed the cushioning capacity of the cushioning mechanism and the door body may collide with the door frame or the like.

In order to more surely prevent the door body from colliding with the door frame or the like, a method of increasing the buffering capacity by the buffering mechanism can be considered. For example, when a cylinder damper having a linear cylinder is used as the buffer mechanism, it is easy to set a high effect of suppressing the moving speed of the door body in the closing direction, that is, a high buffer effect.

However, if a cylinder damper having a large buffering capacity is used, the door body, which has started to move in the closing direction due to the urging force, tends to stop suddenly. Due to this sudden braking, a phenomenon in which the door main body bounces in the opposite direction, that is, in the opening direction, that is, a so-called rebound phenomenon, may occur when the elastic member for closing once contracted is returned to its original state. In addition, the phenomenon that the door body jumps up may occur. At this time, in some cases, the impact of the door body that is bounced or bounced is transmitted to surrounding members, and a secondary load is applied to the sliding door closer device itself and the surrounding members. As a result, for example, in the case of storage equipment such as a cupboard, the contents inside the sliding door may fall down. It is desirable to avoid the occurrence of rebound phenomenon and bounce phenomenon as much as possible.

Therefore, an object of the present invention is, in the closing device for a sliding door, when the door body is automatically closed by the urging force of the closing elastic member, the occurrence of a rebound phenomenon or a bounce phenomenon in which the door body is pushed back in the opening direction. To prevent it surely.

In order to solve the above problems, the present invention relates to a door main body that is movable along the longitudinal direction of a horizontal frame of a sliding door, a fixing member provided on one of the door main body or the horizontal frame, and the fixing member. And a slider movable along the longitudinal direction, a closing elastic member for urging the fixing member and the slider toward each other, and a relative movement of the fixing member and the slider toward each other. Closing device for a sliding door, which includes a cushioning mechanism that suppresses the relative movement speed of the fixing member and the slider, and an auxiliary cushioning mechanism that suppresses the relative movement speed of the fixing member and the slider and has a different cushioning force from the cushioning mechanism. It was adopted.

The shock absorbing mechanism may be a cylinder type damper including a shock absorbing rod that advances and retreats along the longitudinal direction and shock absorbing resistance adding means that adds resistance to the advance and retreat of the shock absorbing rod.

In this aspect, the auxiliary cushioning mechanism includes an auxiliary cushioning rod that advances and retreats along the longitudinal direction, and auxiliary cushioning resistance adding means that adds resistance to the advancement and retraction of the auxiliary cushioning rod. It is possible to adopt a configuration in which the tip of the rod and the tip of the auxiliary cushioning rod face each other.

Further, it is possible to adopt a configuration in which the tip of the buffer rod and the tip of the auxiliary buffer rod are connected.

The resistance of the auxiliary buffer resistance adding unit may be set to be larger than the resistance of the buffer resistance adding unit.

In each of these aspects, a stopper pin included in the door body or the other of the lateral frames and a trigger member included in the slider and detachable from the stopper pin are provided, and the trigger member has the door body opened. In this state, the slider is retained by the retaining portion provided in the fixing member, and by the retaining, the slider is maintained at that position against the biasing force of the closing elastic member. When the door body moves in the closing direction of the sliding door, the stopper pin hits the trigger member, engages the trigger member, and is unlocked from the locking portion. The slider is configured to relatively move in one of the longitudinal directions with respect to the fixing member by the elastic force of the closing elastic member to close the door body, and the cushioning resistance adding means is attached to the slider. It is possible to adopt the configuration that has been described.

This invention relates to a closing elastic member that urges the door body in the closing direction, a cushioning mechanism that suppresses the movement speed of the door body in the closing direction, and an auxiliary member that suppresses the movement speed of the door body in the opening direction. Since the sliding door closer device including the cushioning mechanism is adopted, it is possible to reliably prevent the rebound phenomenon and the flip-up phenomenon in which the door body is pushed back in the opening direction when the door body is closed.

Front view of a closer device for a sliding door according to an embodiment Disassembled perspective view from above of the sliding door closer device Disassembled perspective view from below of the closer device for sliding doors (A) is a front view of a sliding door closer device in a standby state, (b) is a front view of a sliding door closer device in a decelerating operation state, and (c) is a front view of a sliding door closer device in a retracting operation state. In the standby state, (a) is a perspective view, (b) is a plan view, (c) is a front view, and (d) is a bottom view. A deceleration operation state is shown, (a) is a perspective view, (b) is a plan view, (c) is a front view, and (d) is a bottom view. The drawing operation|movement state is shown, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a bottom view. The detail of a trigger member is shown, (a) is a rear view, (b) is a top view, (c) is a left side view, (d) is a front view, (e) is a right side view, and (f) is a bottom view. The connection part of the buffer rod of a buffer mechanism and the auxiliary buffer rod of an auxiliary buffer mechanism is shown, (a) is a left side view, (b) is a front view, (c) is a right side view.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a sliding door to which a sliding door closer device of this embodiment is attached.

The guide rail is fixed to the upper surface of the lower horizontal frame (not shown) of the rectangular frame body forming the outer shape of the sliding door, and connects the vertical frames 2 and 2 facing left and right in the vertical direction. A pair of left and right carriages (not shown) attached to the door body 1 can travel on the guide rails. The door body 1 is movable along the longitudinal direction of the guide rail via the carriage. The guide rail may be provided on the upper horizontal frame 3.

As shown in FIG. 1, a housing (fixing member) 20 that constitutes the closer body and extends in the longitudinal direction is attached to the upper horizontal frame 3. Further, a stopper pin 11 protruding upward is provided on the upper portion of the door body 1 at a portion close to the one vertical frame 2. The stopper pin 11 is provided in the trigger unit 10 fixed to the upper part of the door body.

As shown in FIGS. 2 and 3, the housing 20 is composed of a housing body 20a extending in the longitudinal direction along the sliding direction of the door body 1, a fixing plate 20b fixed to the housing body 20a, and the like. ..

A slit-shaped first guide 24 extending in the longitudinal direction is formed in the widthwise center of the fixed plate 20b. The first guide 24 penetrates the front and back of the fixed plate 20b and has a straight portion 24b having a constant length, and the other end portion of the straight portion 24b (away from the door end on the side that abuts the vertical frame 2 when closed). The locking portion 24a is formed by bending the side). The straight portion 24b is provided with a constant width over the entire length except for the end portion.

Inside the housing 20, a slider 22 that is movable in the longitudinal direction is provided. The slider 22 is made of a plate-shaped member having the same width as the fixed plate 20b or a width slightly narrower than the fixed plate 20b and shorter than the fixed plate 20b in the longitudinal direction.

In this embodiment, the housing body 20a, the fixed plate 20b, the slider 22 and the like, and other parts of each part constituting the sliding door closer device, except for some members such as pins, screws, springs and pads. All of them are made of resin. However, the materials of those parts can be freely selected according to the use, type, etc. of the sliding door.

As shown in FIGS. 2 and 3, the housing body 20a is provided with a slit-shaped second guide 25 extending in the longitudinal direction at the center in the width direction. The second guide 25 penetrates the front and back of the housing body 20a and is formed by a linear long hole having a constant length.

The slider 22 is placed on the fixed plate 20b such that the linear portion 24b of the first guide 24 and the second guide 25 have an overlapping portion in the width direction thereof. In this embodiment, the widthwise centers of the slits of both guides 24, 25 are aligned. That is, the linear portion 24b of the first guide 24 and the second guide 25 are arranged at a position that vertically overlaps each other.

The trigger member 21 is attached to one end of the holding portion 22a of the slider 22 in the longitudinal direction.

As shown in FIG. 8, the trigger member 21 includes a first member 21a arranged on the slider 22 and a second member 21b arranged below the slider 22. The first member 21a and the second member 21b are connected by a connecting portion 21c that enters the first guide 24, and they are integrally molded. The first member 21a and the second member 21b are guided to move in the longitudinal direction by the connection portion 21c entering the first guide 24, and the first member 21a and the second member 21b are Since it is wider than the first guide 24, it also has an effect of preventing loosening and rattling.

The trigger member 21 has a guide portion 21g that projects toward the fixed plate 20b below the second member 21b. By moving the guide portion 21g in the second guide 25 in the longitudinal direction, the movement of the trigger member 21 in the longitudinal direction is guided. In this way, the orientation of the trigger member 21 in the state of being movable in the longitudinal direction is hereinafter referred to as the orientation of the trigger member 21.

The trigger member 21 is allowed to rotate outward from its normal position by the connection portion 21c entering into the locking portion 24a provided at the other end of the first guide 24.

The second member 21b of the trigger member 21 is provided with a recess 21f that opens laterally in plan view. When the trigger member 21 is rotated outward, the opening 21e of the recess 21f of the trigger member 21 faces the stopper pin 11 on the door body 1 side. In the normal orientation, the opening 21e of the recess 21f of the trigger member 21 is oriented in a direction (width direction) intersecting the longitudinal direction. Therefore, in this orientation, the stopper pin 11 cannot enter the recess 21f. Can not.

An elastic member 23 for closing, which is a coil spring, is attached between the support portion 23a provided on the slider 22 and the support portion 23b provided on the housing 20. As shown in FIG. 2, the closing elastic member 23 has the support portion 23b of the housing 20 as a fixed end, the support portion 23a of the slider 22 as a moving end, and the slider 22 in one longitudinal direction with respect to the fixed plate 20b. A biasing force is applied to pull it toward the end.

Therefore, with the door body 1 opened, the trigger member 21 is locked to the locking portion 24a, and the locking keeps the slider 22 at that position against the biasing force of the closing elastic member 23. To be done. In this state, the door body 1 is slidable along the guide rail with a comparatively light force, and the self-closing device of the sliding door closer device is not working. That is, the stopper pin 11 of the door body 1 is located away from the trigger member 21.

When the door body 1 moves in the closing direction of the sliding door, the stopper pin 11 comes into contact with the opening 21e of the recess 21f of the trigger member 21, and the trigger member 21 pivots inward toward the orientation and contacts the stopper pin 11. Engage. By this rotation, the engagement of the trigger member 21 with the engagement portion 24a is released, and the slider 22 is moved relative to the housing 20 in one of the longitudinal directions by the elastic force of the closing elastic member 23 to automatically move. The door body 1 is closed.

Further, a buffer mechanism 40 is attached to the slider 22. The buffer mechanism 40 is composed of a cylinder type damper in this embodiment.

The cushioning mechanism 40 including a cylinder type damper includes a cylindrical cylinder case 41 and a cushioning rod 42 protruding from one end of the cylinder case 41. The amount of protrusion of the buffer rod 42 can be varied by moving the buffer rod 42 forward and backward with respect to the cylinder case 41. A constant resistance is added to the advancing/retreating of the buffer rod 42 by a buffer resistance adding means (not shown) housed in the cylinder case 41 (for example, one using a fluid or the like).

The cylinder case 41 is fixed to the slider 22 by a holding portion 22a of the slider 22. Therefore, the cylinder case 41 moves relative to the housing body 20a in the longitudinal direction together with the slider 22. The tip of the buffer rod 42 is directed to one end side in the longitudinal direction, that is, to the fixed plate 20b side.

An auxiliary buffer mechanism 50 is attached to the fixed plate 20b. In this embodiment, the auxiliary cushioning mechanism 50 is composed of a cylinder-type damper, like the cushioning mechanism 40.

The auxiliary shock absorbing mechanism 50 including a cylinder type damper includes a cylindrical cylinder case 51 and an auxiliary shock absorbing rod 52 protruding from the other end of the cylinder case 51. The amount of protrusion of the auxiliary buffer rod 52 can be changed by moving the auxiliary buffer rod 52 forward and backward with respect to the cylinder case 51. A constant resistance is added to the advance/retreat of the auxiliary buffer rod 52 by an auxiliary buffer resistance adding means (not shown) housed in the cylinder case 51 (for example, one using a fluid or the like).

The cylinder case 51 is fixed to the fixed plate 20b by the holding portion 20c of the fixed plate 20b. Therefore, the cylinder case 51 is stationary with respect to the housing body 20a together with the fixed plate 20b. The tip of the auxiliary buffer rod 52 faces the other end side in the longitudinal direction, that is, the slider 22 side.

The tip 42a of the buffer rod 42 and the tip 52a of the auxiliary buffer rod 52 are opposed to each other. A predetermined resistance is given when the projection length of the cushioning rod 42 from the cylinder case 41 increases or decreases, and a predetermined resistance is also provided when the projection length of the auxiliary cushioning rod 52 from the cylinder case 51 increases or decreases. Is added.

Here, the resistance by the auxiliary buffer resistance adding means is set to be larger than the resistance by the buffer resistance adding means.

Further, in this embodiment, as shown in FIG. 9, a connecting member 42b is attached to the tip 42a of the buffer rod 42, a connecting member 52b is attached to the tip 52a of the auxiliary buffer rod 52, and the connecting member 42b is attached. , 52b are connected to the two rods 42, 52. Specifically, one connecting member 42b is fitted in the recess of the other connecting member 52b.

In this embodiment, the tip 42a of the buffer rod 42 and the tip 52a of the auxiliary buffer rod 52 are connected via the connecting members 42b, 52b, but the tip 42a of the buffer rod 42 and the auxiliary The tip 52a of the buffer rod 52 may be directly connected.

The operation of the sliding door closer device will be described. Now, as shown in FIG. 4A, it is assumed that the door body 1 is located on the open side on the left side in the drawing. The door body 1 is in an open state. Hereinafter, this state is referred to as a standby state. Details of the standby state are shown in FIGS. 5(b) to 5(d), the housing body 20a is not shown.

In this state, as shown in FIG. 4A, the trigger member 21 is in a direction in which the trigger member 21 moves away from the center line of the first guide 24 to the outer side in the width direction of the housing 20, that is, in the state of being rotated outward. At this time, since the trigger member 21 is locked to the locking portion 24a of the first guide 24, the trigger member 21 is maintained in the standby state against the biasing force of the closing elastic member 23.

When the door body 1 moves in the closing direction of the sliding door (rightward in FIG. 4A), the stopper pin 11 comes into contact with the trigger member 21 in due course. The trigger member 21 is pressed by the stopper pin 11 and rotated inward to reach the localization. This state is shown in FIG. The door body 1 is integrated with the slider 22 by the trigger member 21 engaging with the stopper pin 11.

When the trigger member 21 rotates inwardly and the connecting portion 21c disengages from the locking portion 24a and enters the linear portion 24b, the slider 22 is pulled toward the slider 22 in one longitudinal direction ( Since the biasing force acts, the slider 22 moves relatively to one side in the longitudinal direction with respect to the fixed plate 20b and the housing body 20a to which the fixed plate 20b is fixed. During this movement in the closing direction, the cushioning function of the cushioning mechanism 40 and the auxiliary cushioning mechanism 50 is exerted. Hereinafter, this state is referred to as a deceleration operation state. Details of the deceleration operation state are shown in FIGS. 6B to 6D, the housing main body 20a is omitted in the same manner.

In the state shown in FIGS. 6A to 6D, since the trigger member 21 and the stopper pin 11 are in the engaged state, the slider 22 is maintained in a state where it does not move relative to the door body 1, and the slider 22 However, it moves in the longitudinal direction relative to the stationary plate 20b and the housing body 20a. The arrow shown in FIG. 4(b) indicates the direction of relative movement of the slider 22 with respect to the stationary plate 20b and the housing body 20a.

Due to this relative movement, the door body 1 of the sliding door approaches the position where the sliding door is completely closed. When the door body 1 is completely tightened, the cushioning mechanism 40 and the auxiliary cushioning mechanism 50 function respectively.

That is, when the door body 1 relatively moves in the closing direction, the resistance of the buffer mechanism 40 when the rod 42 contracts normally suppresses the moving speed of the slider 22 and adds a predetermined buffering function (the deceleration operation state). ). However, when the door body 1 moves at a speed exceeding the cushioning function of the cushioning mechanism 40, such as when the door body 1 is pushed with force by hand to close the door body 1, it is possible that the door body 1 hits the vertical frame 2. In such a case, the shock absorbing function of the auxiliary shock absorbing mechanism 50 suppresses the impact caused by the door body 1 hitting the vertical frame 2. As a result, it is possible to reliably prevent the rebound phenomenon in which the door body 1 is pushed back in the opening direction and the upward jump phenomenon.

At this time, the resistance of the auxiliary buffer resistance adding means is set to be larger than the resistance of the buffer resistance adding means, so that the buffer rod 42 is moved by the momentum of the door body 1 moving in the closing direction. When 52 is pressed to one side, the damping force of the auxiliary cushioning mechanism 50 complements the cushioning force of the cushioning mechanism 40, and the speed of movement of the slider 22 is suppressed to add a predetermined cushioning function.

After the momentum of movement of the door body 1 and the slider 22 in the closing direction is attenuated to some extent by the cushioning function of the cushioning mechanism 40, or in parallel with the cushioning by the cushioning mechanism 40, by the cushioning function of the auxiliary cushioning mechanism 50. , The momentum of movement of the door body 1 and the slider 22 in the closing direction is further attenuated, and finally, as shown in FIG. 4C, the door body 1 is completely closed by the biasing force of the closing elastic member 23. To be done. Details of this closed state are shown in FIGS. 7B to 7D, the housing main body 20a is omitted in the same manner.

In the embodiment, the resistance of the auxiliary buffering resistance adding means of the auxiliary buffering mechanism 50 having a relatively short stroke is set to be larger than the resistance of the buffering resistance adding means of the buffering mechanism 40 having a relatively long stroke. However, for example, by reversing the strength of the buffering function, the resistance by the auxiliary buffering resistance adding means of the auxiliary buffering mechanism 50 having a relatively short stroke is changed to the resistance added by the buffering mechanism 40 having a relatively long stroke. A configuration in which the resistance is set smaller than the resistance by the means is also conceivable. In this case, the door main body 1 moving in the closing direction is dampened to some extent by the buffering function of the auxiliary buffering mechanism 50, and the auxiliary buffering mechanism 50 is used. Simultaneously with the cushioning by the cushioning mechanism 40, the cushioning function of the cushioning mechanism 40 further damps the momentum of movement of the door body 1 and the slider 22 in the closing direction, and finally, by the biasing force of the closing elastic member 23. Is completely closed.

Further, in each of the above aspects, the stroke of the auxiliary buffer rod 52 of the auxiliary buffer mechanism 50 is made relatively longer than that of the buffer rod 42 of the buffer mechanism 40, and the stroke of the buffer rod 42 of the buffer mechanism 40 is auxiliary buffered. A configuration in which the stroke of the auxiliary buffer rod 52 of the mechanism 50 is made relatively shorter than the stroke is also conceivable.

Next, the operation of opening the door body 1 of the sliding door will be described. The door body 1 in the closed state is pushed by hand and moved in the opening direction.

When the door body 1 is moved toward the other end side against the biasing force of the closing elastic member 23, the slider 22 moves in the direction opposite to the arrow shown in FIG. , The state shown in FIG.

In the state shown in FIG. 4B, the stopper pin 11 is still in the recess 21f of the trigger member 21, but the connecting portion 21c of the trigger cam 21 is moved by the further movement of the door body 1. , And each of them engages by entering the locking portion 24a of the first guide 24. At this time, since the inner surface on the outer diameter side of the bending point from the linear portion 24b to the locking portion 24a is an arcuate portion, such a transition is smooth.

When the trigger member 21 pivots outward and enters the state shown in FIG. 4A, the engagement of the trigger cam 21 with the stopper pin 11 is released. Therefore, thereafter, the door body 1 can be lightly moved in the direction of opening the sliding door without being affected by the closing elastic member 23.

1 Main unit 2 Vertical frame 3 Horizontal frame (upper frame, lower frame)
10 Trigger unit 11 Stopper pin (trigger)
20 Fixing member (housing)
20a Housing body 20b Fixed plate 20c Holding part 21 Trigger member 21a First member 21b Second member 21c Connecting part 21e Opening 21f Recess 21g Guide part 22 Slider 22a Holding part 23 Closing elastic member 24 First guide 24a Locking part 24b Straight portion 25 Second guide 40 Cushioning mechanism 41 Cylinder case 42 Cushioning rod 50 Auxiliary cushioning mechanism 51 Cylinder case 52 Auxiliary cushioning rod

Claims (3)

A door body (1) movable along the longitudinal direction of the horizontal frame (3) of the sliding door;
A fixing member (20) provided on one of the door body (1) and the horizontal frame (3),
A slider (22) movable along the longitudinal direction with respect to the fixing member (20);
A closing elastic member (23) for urging the fixing member (20) and the slider (22) toward each other,
A buffer mechanism (40) for suppressing the relative movement speed when the fixing member (20) and the slider (22) relatively move in a direction in which they approach each other;
An auxiliary buffer mechanism (50) for suppressing the relative movement speed of the fixing member (20) and the slider (22) and having a different buffer force from the buffer mechanism (40);
Bei to give a,
The shock absorbing mechanism (40) includes a shock absorbing rod (42) that advances and retracts along the longitudinal direction, and shock absorbing resistance adding means that adds resistance to the advance and retract of the shock absorbing rod (42),
The auxiliary cushioning mechanism (50) includes an auxiliary cushioning rod (52) that advances and retracts along the longitudinal direction, and an auxiliary cushioning resistance adding unit that adds resistance to the advancement and retraction of the auxiliary cushioning rod (52). Prepare,
A closing device for a sliding door in which a tip of the buffer rod (42) and a tip of the auxiliary buffer rod (52) are opposed to each other in the longitudinal direction and one is fitted into a recess provided in the other and connected . A door body (1) movable along the longitudinal direction of the horizontal frame (3) of the sliding door;
A fixing member (20) provided on one of the door body (1) and the horizontal frame (3),
A slider (22) movable along the longitudinal direction with respect to the fixing member (20);
A closing elastic member (23) for urging the fixing member (20) and the slider (22) toward each other,
A buffer mechanism (40) for suppressing the relative movement speed when the fixing member (20) and the slider (22) relatively move in a direction in which they approach each other;
An auxiliary buffer mechanism (50) for suppressing the relative movement speed of the fixing member (20) and the slider (22) and having a different buffer force from the buffer mechanism (40);
Bei to give a,
The shock absorbing mechanism (40) includes a shock absorbing rod (42) that advances and retracts along the longitudinal direction, and shock absorbing resistance adding means that adds resistance to the advance and retract of the shock absorbing rod (42),
The auxiliary cushioning mechanism (50) includes an auxiliary cushioning rod (52) that advances and retracts along the longitudinal direction, and an auxiliary cushioning resistance adding unit that adds resistance to the advancement and retraction of the auxiliary cushioning rod (52). The tip of the buffer rod (42) and the tip of the auxiliary buffer rod (52) face each other,
A stopper pin (11) provided on the other of the door body (1) or the horizontal frame (3); and a trigger member (21) provided on the slider (22) and detachable from the stopper pin (11). Prepare,
The trigger member (21) is locked to a locking portion (24a) included in the fixing member (20) in a state where the door body (1) is open, and the locking causes the closing. The slider (22) is maintained at that position against the urging force of the elastic member (23) for use, and the stopper pin (11) has the door body (1) in the closing direction of the sliding door. By moving to the trigger member (21), the trigger member (21) is engaged and the locking portion (24a) is unlocked. Is for closing the door body (1) by relatively moving in one of the longitudinal directions with respect to the fixing member (20) by the elastic force of the closing elastic member (23),
The closing device for a sliding door, wherein the buffer resistance adding means is attached to the slider (22) . The auxiliary buffer resistor by the resistance adding means is a sliding door for closer device according to claim 1 or 2 is set greater than the resistance by the cushioning resistance adding means.

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