JP4313764B2 - Sliding door retractor - Google Patents

Description

  The present invention relates to a sliding door retracting device that alleviates a sudden closing of a sliding door and automatically closes the sliding door.

  2. Description of the Related Art A retracting device that softly and reliably closes an open drawer or closes a door is known (see, for example, Patent Document 1). This pull-in device has a carriage that can be slid linearly under the force of a spring, and a rotary damper. The carriage can be detachably connected to a movable part of the furniture via a cam. A rack surface is formed on the slidable carriage, and a rotary damper is disposed at a fixed position. Further, a linear damper is used instead of the rotary damper. In other words, this retracting device combines a closed damper device to obtain a soft closing operation process without causing a closing operation noise.

JP 2001-245738 A

  However, the retracting device described in Patent Document 1 does not provide any care when the lock pin that operates the cam is not engaged.

  The present invention has been made in view of the above circumstances. When the pull-in member is pulled in a state where the operation member and the catch member are not engaged, it is easily caught without disassembling or the like. It is an object of the present invention to provide a sliding door retracting device that can return to a state in which the member and the operating member are engaged and can be operated normally.

In order to achieve the above object, the sliding door retracting device according to claim 1 includes an apparatus main body provided on a frame of the sliding door, an operating member provided on the sliding door, and the operating member of the sliding door. A return member provided on the door end side so as to be rotatable to the operation member side and capable of being returned by an urging member;
The device body is
A guide rail portion provided in the frame body and provided with a recess and a roller guide portion in this order toward the closing direction of the shoji,
A pull-in member provided on the guide rail portion so as to be reciprocally movable in parallel with the moving direction of the shoji,
An energizing member for energizing the retracting member in the closing direction of the shoji,
A damper that provides resistance to the pulling member when the pulling member is pulled by the pulling biasing member;
A catch member provided with a guide roller and rotatably provided on the pull-in member, wherein the guide member is rotated by being engaged with the operation member by the movement of the shoji in the closing direction. When the guide roller engaged with the recess moves to the roller guide portion, the pull-in member can be moved, and the guide roller engages with the operation member and can move together. By moving the roller guide portion, the engagement state with the operation member can be maintained, and the guide roller moves from the roller guide portion to the concave portion by moving the shoji in the opening direction. The catch that is rotated by the operation member and is disengaged from the operation member, and the guide roller is engaged with the concave portion to make the retracting member immovable. And a wood,
The return member is operated when the operation member is not engaged with the catch member and the retracting member is retracted, and the operation member is positioned closer to the shoji summoning side than the catch member. When closing the shoji until the member hits the catch member, it hits the catch member and falls to the operation member side, and then returns by the biasing member and engages the catch member.
It is characterized by that.

The sliding door retracting device according to claim 2 is provided with an operating member provided on a frame of the sliding door, and capable of rotating to the operating member side from the operating member of the frame to the summing side of the shoji. A return member provided so as to be able to return by a force member, and a device main body provided on the sliding door shoji,
The device body is
A guide rail portion provided in the shoji, wherein a recess and a roller guide portion are formed in this order toward the opening direction of the shoji,
A pull-in member provided on the guide rail portion so as to be reciprocally movable in parallel with the moving direction of the shoji,
A biasing member for pulling in which the pulling member is biased in the closing direction when the pulling frame is biased in the opening direction, and when the pulling frame is immovable by the operation member,
A damper that provides resistance to the guide rail when the shoji is pulled in the closing direction by the pulling biasing member;
A catch member provided with a guide roller and rotatably provided on the pull-in member, wherein the guide member is rotated by being engaged with the operation member by the movement of the shoji in the closing direction. When the guide roller engaged with the recess moves to the roller guide portion, the guide roller engages with the operation member to make the retracting frame immovable, and the guide roller moves the roller guide portion. Thus, the engagement state with the operation member can be maintained, and the guide roller is rotated by moving from the roller guide portion to the concave portion by the movement of the shoji in the opening direction, and the operation member A catch member that is disengaged with the guide roller and is engaged with the concave portion to allow the pulling member to move,
The return member is operated when the pull-in member is pulled in the state where the catch member is not engaged with the operation member, and the operation member is positioned closer to the door side of the shoji than the catch member. When the shoji is closed until the catch member hits a member, it hits the catch member and falls to the operation member side, and then returns to the biasing member and engages the catch member.
It is characterized by that.

  According to the pulling-in device of the sliding door according to claim 1 and claim 2, after closing the shoji when the pulling member is pulled in a state where the operation member and the catch member are not engaged, By simply performing an operation of opening, the return member can automatically return to a normal operating state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 12 are views showing a sliding door retracting apparatus according to the first embodiment of the present invention. FIG. 1 is a front view showing the sliding door on which the retracting apparatus is installed, and FIG. FIG. 3 is a plan view of the sliding door, FIG. 3 is a side view of the sliding door, FIG. 4 is a plan view of the sliding door retracting device, and FIG. 5 is a front view of the sliding device partially cut away. 6 is an enlarged view of the main part of FIG. 4, FIG. 7 is an enlarged view of the main part of FIG. 5, FIG. 8 (a) is a cross-sectional view taken along the line AA of FIG. b) is a cross-sectional view taken along line BB in FIG. 7, FIG. 8 (c) is a cross-sectional view taken along line CC in FIG. 7, and FIG. 9 is a view showing a guide rail portion. (A) is a plan view, (b) is a front view with a part cut away, (c) is a longitudinal sectional view, FIG. 10 is a view showing a retracting frame portion, and (a) is a plan view. , (B ) Is a front view, FIG. 11 is a front view showing a spring force adjusting portion, and FIG. 12 is a front view showing an operation portion.

  As shown in FIGS. 1 to 3, the sliding door retracting apparatus according to the present embodiment includes an apparatus main body H and an operation unit S. The apparatus main body H is attached to an upper frame W1 of the frame W of the sliding door T. The operation unit S is attached to the upper surface of the upper arm V1 of the sliding door V of the sliding door T. Both the apparatus main body H and the operation unit S are disposed in the guide groove M of the upper frame W1.

In the present embodiment, the sliding door T is a two-storied sliding sliding door, and the frame body W is assembled in a square shape by the upper frame W1, the lower frame W2, and the left and right vertical frames W3. In addition, two shoji (outer shoji and inner shoji) V are provided so as to be horizontally movable in the left-right direction. As for the shoji V, a square fence assembly is assembled with the upper fence V1, the lower fence V2 and the left and right vertical fences (door side vertical fence and outside summit vertical fence) V3. It has been incorporated. Two door carts K are rotatably provided on the lower arm V2 of the shoji V, and the shoji V is opened and closed by running on the rail R provided on the lower frame W2 of the frame W. It has become. Further, two guide rollers G are provided on the upper surface of the upper collar V1 of the shoji V so as to be horizontally rotatable, and roll along the inner surface of the guide groove M formed on the lower surface of the upper frame W1 of the frame body W. It comes to move.
In addition, although this Embodiment demonstrates the case where the drawing-in apparatus of this invention is applied to the external shoji V among the 2 shoji V, it can apply to the internal shoji V similarly.

As shown in FIGS. 4 to 11, the device main body H of the sliding door retracting device includes a guide rail portion 1, a retracting frame portion 2, and a spring force adjusting portion 3. The guide rail portion 1 and the retracting frame portion 2 are provided near the center in the left-right direction on the lower surface of the upper frame W1, and the spring adjustment portion 3 is provided near the end (see FIG. 1).
The guide rail portion 1 includes an upper guide rail 11 and a lower guide rail 12 fixed to each other by screws, and an L-shaped connecting plate 13 fixed to the rear side of the guide rails 11 and 12. It is formed in a long and narrow rectangular box shape with the front side opened. The upper guide rail 11 is fixed to the upper frame W1 by screws 14. On the lower surface of the upper guide rail 11 and the upper surface of the lower guide rail 12, guide grooves 15 and 16 and the like extending continuously in the longitudinal direction are formed, respectively. In addition, a rack 17 is formed at the center in the longitudinal direction at the upper part of the front surface of the upper guide rail 11, and the bottom of the rack 17 is connected to the end of the upper frame 1 from the rack 17. A straight portion (flat portion) 18 extending in the longitudinal direction with the same depth is formed. In addition, a roller guide portion 20 is formed at the lower portion of the front surface of the upper guide rail 11. The roller guide portion 20 includes a linear portion 21 extending linearly in the longitudinal direction and an inclined portion 22 formed continuously from the end of the upper frame 1 of the linear portion 21, and the inclined portion 22. Further, on the end side of the upper frame 1, a concave portion (stopper portion) 24 that is recessed toward the back side is formed. The inclination part 22 inclines so that it may go to a back | inner side (rear side) gradually as it goes to the recessed part 24 from the linear part 21. As shown in FIG. In addition, although the inclination part 22 is formed in the linear form in this example, you may form in the shape of a curve.

  The retractable frame portion 2 includes a retractable frame (retractable member) 31. The pull-in frame 31 is provided on the guide rail portion 1 so as to be movable in the longitudinal direction. That is, on the back side of the upper surface and the lower surface of the frame 31, two protrusions 32 and 33 projecting upward and downward are formed at both ends in the longitudinal direction, and both the protrusions 32 are formed on the guide rail 11. The guide grooves 15 and the both projections 33 are fitted into the guide grooves 16 of the guide rails 12, respectively, and the projections 32 and 33 are moved along the guide grooves 15 and 16, respectively. ing.

  Two unidirectional rotating dampers (dampers) 34 and 35 are attached to the pull-in frame 31 at intervals in the longitudinal direction of the pull-in frame 31. The pinions 36 and 37 of the unidirectional rotating dampers 34 and 35 are respectively engaged with the rack 17 of the guide rail 11, and when the retractable frame 31 moves to the end side of the upper frame 1, resistance force is increased. When the retractable frame 31 moves slowly and moves toward the center of the upper frame 1, it moves without resistance. The two unidirectional rotating dampers 34 and 35 have different resistance forces, and the unidirectional rotating damper 34 positioned on the end side of the upper frame 1 is more resistant than the unidirectional rotating damper 35 positioned on the center side. Is set larger.

  Further, a pin 38 is fixed to an end of the pull-in frame 31 on the end side of the upper frame 1, and one end of two tension coil springs (springs) 39 is locked to the pin 38. The other end portions of the tension coil springs 39 are engaged with the screws 41 of the spring force adjusting unit 3. The tension coil spring 39 functions as a pulling biasing member that pulls in the pulling frame 31.

  The spring force adjusting unit 3 includes an attachment frame 42, and the attachment frame 42 is attached to the guide groove M at the end portion in the left-right direction of the upper frame W1 with screws. Note that the attachment frame 42 may be formed integrally with the guide rail portion 1. If it does in this way, attachment to these upper frames W1 will become easy. A long hole 44 extending in the longitudinal direction of the guide groove M is formed in the lower wall 43 of the mounting frame 42, and a screw 45 is inserted into the long hole 44 from below and a nut plate to which a nut 46 is welded. 47 is screwed into the nut 46. A plate-like spacer 48 is interposed between the lower wall 43 and the nut 46. A retaining member 49 is attached to the distal end side of the screw 45 from the nut plate 47. The screw 41 is inserted into the elongated hole 44 of the lower wall 43 of the mounting frame 42 from below, and is screwed into the nut plate 47 through the spacer 48. The screw 41 is disposed closer to the center of the upper frame 1 than the screw 45. By moving the inside of the long hole 44 and changing the position of the screw 45, the position of the screw 41 with respect to the pull-in frame 31 is changed, whereby the spring force of the tension coil spring 39 is adjusted.

  Further, a catch member 50 is fixed to a central portion side of the upper frame 1 in the retracting frame 31 by a screw 52 through a cylindrical spacer 51 so that the catch member 50 is screwed (rotated). Axis) 52 can be rotated horizontally. The catch member 50 is urged to rotate counterclockwise in a plan view by a tension coil spring (biasing member) 54 provided between the catch member 50 and the retracting frame 31. A guide roller 56 is rotatably attached to the catch member 50 by a screw 55. The guide roller 56 moves while being guided by the roller guide portion 20 of the guide rail 11 of the guide rail portion 1, and is dropped into the concave portion 24 at the end portion of the roller guide portion 20 on the inclined portion 22 side. Further, the catch member 50 is formed with an engagement portion 57 and an engagement portion 58 that protrude horizontally on the opening side of the guide rail portion 1 (the side opposite to the connecting plate 13) with a slight gap. The operation member 70 of the operation unit S is engaged with the engagement portion 57 and the engagement portion 58.

  As shown in FIG. 12, the operation portion S includes an attachment frame 71, which is attached to a position slightly closer to the summing portion than the central portion of the upper surface of the upper arm V1 of the shoji V with screws. It has been. An operation member 70 and a return member 72 are attached to the attachment frame 71 so as to protrude upward with a slight gap therebetween. The operation member 70 and the return member 72 are disposed on the summing side and the door end side of the shoji V, respectively. The return member 72 is attached so as to be rotatable about a pin 74 at the lower end thereof, and the upper end thereof is biased by a torsion coil spring (biasing member) 75 in a direction away from the operation member 70. It is regulated by a rubber regulating plate 76 so that it can not rise any further when it is inclined obliquely to the side. Accordingly, the return member 72 is always inclined obliquely toward the operation member 70 side, and when a force is applied against the urging force of the torsion coil spring 75, the return member 72 falls to the operation member 70 side and the force is released. The slanted state is restored by the biasing force of the torsion coil spring 75.

Next, the operation of the sliding door retracting device will be described with reference to FIGS. 1 to 3 and FIGS. 13 to 18.
In a state where the shoji V is opened by a predetermined amount or in a fully open state, as shown in FIG. 13, the guide roller 56 of the catch member 50 is positioned in the recess 24 of the guide rail portion 1, and the pull-in frame 31 is pulled. Despite being pulled toward the end of the upper frame 1 by the coil spring 39, the retractable frame 31 maintains its position. At this time, the pinions 36 and 37 of the two one-way rotating dampers 34 and 35 of the retracting frame 31 are both engaged with the rack 17 of the guide rail portion 1.

  Next, when the shoji V is closed, the operation member 70 attached to the shoji V moves to the left in FIG. 13 and hits the engaging portion 57 of the catch member 50 to be engaged. At this time, the shoji V is in an open state with a little remaining.

  Further, when the shoji V is closed, as shown in FIG. 14, the engaging portion 57 of the catch member 50 is pushed by the operation member 70, and the catch member 50 resists the urging force of the tension coil spring 54 and the screw 52. , And the guide roller 56 is disengaged from the recess 24 of the guide rail portion 1 so that the retractable frame 31 can be moved. Thereafter, the retracting frame 31 is moved to the left side (the end portion side of the upper frame 1) in the drawing by the urging force of the tension coil spring 39, but when the retracting frame 31 is moved, the engaging portion 58 of the catch member 50 is moved to the operation member. Since the operating member 70 is also moved since the engaging member 70 is engaged, the shoji V is moved by the urging force of the tension coil spring 39 without moving the shoji V by human power or the like. Then, while the pinions 36 and 37 of the two one-way rotating dampers 34 and 35 of the retracting frame 31 are engaged with the rack 17 of the guide rail portion 1, the rotational resistance of both the one-way rotating dampers 34 and 35. Accordingly, the retractable frame 31 and the operation member 70 move slowly, so that the shoji V to which the operation member 70 is fixed closes slowly. Thus, at the beginning of the operation of the retractor, the moving speed of the shoji V is slow. Therefore, when the shoji V is closed quickly, the moving speed of the shoji V is decelerated, thereby preventing accidents such as finger jamming.

  Further, when the shoji V is closed, as shown in FIG. 15, the pinion 36 of one of the two one-way rotating dampers 34, 35 is disengaged from the rack 17 and moves along the straight portion 18. To do. As a result, the retracting frame 31 is moved only by the rotational resistance of the one-way rotating damper 35 meshing with the rack 17, so that the retracting frame 31 and the operation member 70 (and hence the shoji V) are slightly earlier than before. To move. In this example, the rotational resistance of the unidirectional rotational damper 34 is set to be larger than that of the unidirectional rotational damper 35, so that the rotational resistance due to only the unidirectional rotational damper 35 is due to the two unidirectional rotational dampers 34, 35. Less than half of the rotational resistance.

  Further, when the shoji V is closed, the pinion 37 of the one-way rotating damper 35 is also detached from the rack 17 and moves along the linear portion 18 as shown in FIG. As a result, the pull-in frame 31 is moved by the urging force of the tension coil spring 39 without any rotational resistance of the one-way rotation damper acting, so the tension coil spring 39 contracts and the urging force becomes weaker. Even if it comes, the retractable frame 31 and the operation member 70 move, so that the shoji V is closed to the fully closed state.

  The guide roller 56 moves along the inclined portion 22 and the linear portion 21 of the roller guide portion 20 of the guide rail portion 1. Thereby, since the attitude | position at the time of the movement of the catch member 50 is controlled, the engaging part 58 of the catch member 50 can engage with the operation member 70, and this operation member 70 can be drawn in.

  On the other hand, when the shoji V is opened from the fully closed state, the operation member 70 fixed to the shoji V pushes the engaging portion 58 of the catch member 50 as shown in FIG. Then, the pulling frame 31 moves to the right side (center side of the upper frame 1) in the same figure while extending the pulling coil spring 39 against the urging force of the pulling coil spring 39. At this time, the guide roller 56 moves along the linear portion 21 and the inclined portion 22 of the roller guide portion 20 of the guide rail portion 1. Thereby, since the attitude | position at the time of the movement of the catch member 50 is controlled, the operation member 70 can engage with the engaging part 58 of the catch member 50, and can push this engaging part 58. FIG. In addition, when the retracting frame 31 moves in this direction, the rotational resistance of the unidirectional rotating dampers 34 and 35 does not occur.

Further, when the shoji V is opened and the guide roller 56 comes to the position of the concave portion 24 of the guide rail portion 1, the catch member 50 is pushed by the operation member 70 as shown in FIG. At the same time, it is pulled by the tension coil spring 54 and rotates counterclockwise in the figure (in plan view) about the screw 52, whereby the guide roller 56 falls into the recess 24 and is engaged with the recess 24. . In this way, the retracting device returns to the same state as in FIG.
When the guide roller 56 is thus positioned in the recess 24, the operating member 70 is disengaged from the engaging portion 58 of the catch member 50, so that the shoji V opens thereafter regardless of the retracting device.

  The spring force (biasing force) of the tension coil spring 39 is maximized immediately before the guide roller 56 is engaged with the concave portion 24 of the guide rail portion 1, but between the linear portion 21 and the concave portion 24 of the roller guide portion 20. Since the inclined portion 22 is provided between them, the sliding resistance between the roller guide portion 20 and the guide roller 56 generated when opening the shoji V is reduced, thereby reducing the operating force when the shoji V is opened, The entrance and exit of the guide roller 56 into the recess 24 is smooth, and the opening and closing operation of the shoji V is smooth.

Next, the operation of the return member 72 will be described.
When the shoji V is opened by a predetermined amount or more, as shown in FIG. 13, the guide roller 56 of the catch member 50 is engaged with the recess 24, and when the shoji V is closed, the operation member 70 catches. Engage with the engaging portion 58 of the member 50. However, when the shoji V is installed, or when the catch member 50 is rotated by touching with the hand, the operation member 70 is moved to the catch member 50 as shown in FIG. The retracting frame 31 may be retracted in a state where the engaging portion 58 is not engaged, and the operation member 70 may be positioned closer to the shoji V summoning side than the catch member 50. If this happens, the retractor will not function.

In such a case, when the shoji V is closed and then opened again, the guide roller 56 of the catch member 50 is engaged with the recess 24 by the return member 72.
That is, when the shoji V is closed from the state of FIG. 19, the shoji V is closed until the operation member 70 hits the end of the catch member 50 as shown in FIG. 20. At this time, the return member 72 attached to the shoji V together with the operation member 70 comes into contact with the catch member 50 and falls to the operation member 70 side, and then returns to an oblique state by the urging force of the torsion coil spring 75, and its tip portion Is located between the engaging portion 57 and the engaging portion 58 of the catch member 50.

Thereafter, when the shoji V is opened, the return member 72 resists the urging force of the tension coil spring 39 until the guide roller 56 is engaged with the recess 24 of the guide rail portion 1 as shown in FIG. The engaging portion 58 is pushed. When the guide roller 56 is positioned in the recess 24, the return member 72 is disengaged from the engaging portion 58 of the catch member 50, so that the shoji V is opened regardless of the retracting device.
In the normal state where the operating member 70 is engaged with the engaging portion 58 of the catch member 50, the distal end portion of the return member 72 is pressed by the lower end of the retracting frame 31, and There is no engagement with the joint 58.

  In the sliding door retracting device configured as described above, when the retracting member 31 is retracted in a state where the operation member 70 is not engaged with the engaging portion 58 of the catch member 50, the shoji V It is possible to return to a state in which the return member 72 can automatically operate normally only by performing an operation of opening after closing.

Next, a second embodiment of the present invention will be described.
22 to 31 are diagrams showing the sliding door retracting apparatus according to the present embodiment, wherein FIG. 22 is a front view showing the sliding door on which the retracting apparatus is installed, and FIG. 23 is a plan view of the sliding door. 24 is a plan view of the pulling device for the sliding door, FIG. 25 is a front view showing the pulling device with a part cut away, FIG. 26 is an enlarged view of the main part of FIG. 24, and FIG. 28A is a cross-sectional view taken along line A′-A ′ of FIG. 27, and FIG. 28B is a cross-sectional view taken along line B′-B ′ of FIG. 27. 28C is a cross-sectional view taken along the line C′-C ′ of FIG. 27, FIG. 29 is a view showing the guide rail portion, FIG. 28A is a cross-sectional view, and FIG. FIG. 30 is a longitudinal sectional view, FIG. 30 is a view showing a retracting frame portion, (a) is a plan view, and (b) is a front view. , And the FIG. 31 is a front view showing an operation unit.

In the above-described embodiment, the apparatus main body H is provided on the frame W side of the sliding door T, the operation unit S is provided on the shoji V side, and the spring (the tension coil spring 39) is used as the pulling biasing member. In the sliding door retracting apparatus of the present embodiment, the apparatus main body is provided on the sliding door side of the sliding door, the operation unit is provided on the frame body side, and a weight is used as the pulling biasing member.
In addition, although this Embodiment demonstrates the case where the drawing-in apparatus of this invention is applied to the external shoji V among the 2 shoji V, it can apply to the internal shoji V similarly.

  As shown in FIGS. 22 and 23, the retracting device for the sliding door according to the present embodiment includes an apparatus main body HA and an operation unit SA, and the apparatus main body HA is an upper arm V1 of the shoji V of the sliding door T. The operation unit SA is attached to the upper surface, and is attached to the upper frame W1 of the frame W of the sliding door T. Both the apparatus main body HA and the operation part SA are disposed in the guide groove M of the upper frame W1. The sliding door T is configured in substantially the same manner as in the above embodiment.

As shown in FIGS. 24 to 30, the apparatus body HA of the sliding door retracting apparatus includes a guide rail portion 1 </ b> A, a retracting frame portion 2 </ b> A, and a weight portion 4.
The guide rail portion 1A includes a lower guide rail 11A and an upper guide rail 12A fixed to each other by screws, and an L-shaped connecting plate 13A fixed to the rear side of the guide rails 11A and 12A. It is formed in a long and narrow rectangular box shape with the front side opened. The lower guide rail 11A is fixed to a substantially central portion in the left-right direction on the upper surface of the upper arm V1 of the shoji V with screws 14A. On the upper surface of the lower guide rail 11A and the lower surface of the upper guide rail 12A, a guide surface 15A, a guide groove 16A, and the like that extend continuously in the longitudinal direction are formed. Further, a roller guide portion 20A is formed at the upper part of the front surface of the lower guide rail 11A. The roller guide portion 20A includes a linear portion 21A that extends linearly in the longitudinal direction and an inclined portion 22A that is formed continuously from the door end side of the shoji V of the linear portion 21A. Furthermore, a concave portion (stopper portion) 24 </ b> A that is recessed on the back side is formed on the door end side of the shoji V. The inclined portion 22A is inclined so as to gradually go to the back side (rear side) from the straight portion 21A toward the concave portion 24. The inclined portion 22A is formed in a linear shape in this example, but may be formed in a curved shape. In addition, a rack 17A is formed on the front surface of the lower guide rail 11A below the roller guide portion 20A. The rack 17A extends from the rack 17A to the central portion in the longitudinal direction. A straight portion 18A extending in the longitudinal direction at the same depth as the tooth bottom of the rack 17A is formed.

  The retractable frame portion 2A includes a retractable frame (retractable member) 31A. The pull-in frame 31A is provided on the guide rail portion 1A so as to be movable in the longitudinal direction. That is, on the back side of the upper surface and the lower surface of the frame 31A, two protrusions 32A and 33A projecting upward and downward are formed at both ends in the longitudinal direction, and both protrusions 32 are formed on the guide rail 11A. The guide surface 15A of the guide rail 12A is inserted into the guide groove 16A of the guide rail 12A, and the protrusions 32A and 33A move along the guide surface 15A and the guide groove 16A, respectively. A structure is provided.

  Two unidirectional rotating dampers (dampers) 34A and 35A are attached to the pull-in frame 31A at intervals in the longitudinal direction of the pull-in frame 31A. The pinions 36A and 37A of the unidirectional rotating dampers 34A and 35A are engaged with the rack 17A of the guide rail 11A. When the shoji V moves in the closing direction, the rack 17A integral with the shoji V When the shoji V moves slowly due to the resistance, and the shoji V moves in the opening direction, it moves without resistance. The two unidirectional rotating dampers 34A and 35A have different resistances, and the unidirectional rotating damper 34A located on the side where the shoji V is summoned is more resistant than the unidirectional rotating damper 35A located on the door end side. It is set large.

  A pin 38A is fixed to the end of the retractable frame 31A on the side where the shoji V is summoned, and one end of a rope 76 is connected to the pin 38A. The rope 76 is bent at a right angle downward from the horizontal direction via a pulley 77 rotatably attached to the frame W, and the other end is connected to the upper end of the weight part 4. The weight part 4 includes a weight 78 and a weight guide 79 made of synthetic resin or the like provided at the upper and lower ends of the weight 78. The weight part 4 is provided in the vertical frame V3 on the side where the shoji V is summoned so as to be movable up and down. The weight guide 79 functions as a guide when the weight 78 moves, and also functions as a buffer member that cushions the collision sound so that the weight guide 79 hits when the weight portion 4 collides with the vertical rod V3. The rope 76, the pulley 77, and the weight part 4 function as a pulling-in biasing member that pulls in the pull-in frame 31A.

  Further, a catch member 50A is rotatably fixed to the end of the retractable frame 31A on the door end side of the shoji V by a screw 52A via a cylindrical spacer 51A. It can be rotated horizontally around a rotation axis 52A. The catch member 50A is biased so as to rotate clockwise in plan view by a tension coil spring (biasing member) 54A provided between the catch member 50A and the pull-in frame 31A. A guide roller 56A is rotatably attached to the catch member 50A by a screw 55A. The guide roller 56A moves while being guided by the roller guide portion 20A of the guide rail 11A of the guide rail portion 1A, and is dropped into the recess 24A at the end of the roller guide portion 20A on the inclined portion 22A side. In addition, the catch member 50A is formed with an engagement portion 57A and an engagement portion 58A that protrude horizontally on the opening side of the guide rail portion 1 (the side opposite to the connecting plate 13) with a small gap. The engaging member 57A of the operating portion SA is engaged with the engaging portion 57A and the engaging portion 58A.

  As shown in FIG. 31, the operation portion SA includes an attachment frame 71A, and this attachment frame 71A is located at an intermediate position between the left and right end portions of the lower surface of the upper frame W1 of the frame body W and the central portion. Attached with screws. The mounting frame 71A is provided with an operation member 70A and a return member 72A so as to protrude downward with a slight gap therebetween. The operation member 70A and the return member 72A are disposed on the door end side and summoning side of the shoji V, respectively. The return member 72A is attached to be pivotable about a pin 74A at its upper end, and its lower end is urged by a torsion coil spring (biasing member) 75A in a direction away from the operation member 70A, and the operation member 70A. It is regulated by the upper frame W1 so that it cannot stand up any more while tilted to the side. Accordingly, the return member 72A is normally inclined obliquely toward the operation member 70A, and when a force is applied against the biasing force of the torsion coil spring 75A, the return member 72A falls to the operation member 70A side and the force is released. The slanted state is restored by the biasing force of the torsion coil spring 75A.

Next, the operation of the sliding door retracting device will be described with reference to FIGS.
In a state where the shoji V is opened by a predetermined amount or in a fully open state, the guide roller 56A of the catch member 50A is positioned in the recess 24A of the guide rail portion 1A, whereby the guide rail portion 1A, the retracting frame 2A and the weight portion 4 And move together with the shoji V. At this time, the pinions 36A and 37A of the two one-way rotating dampers 34A and 35A of the retracting frame 31A are both engaged with the rack 17A of the guide rail portion 1A.

  Next, when the shoji V is closed, the device main body HA (the guide rail portion 1A, the pull-in frame 2A and the weight portion 4) attached to the shoji V moves to the vertical frame W3 side of the frame W together with the shoji V. The engaging portion 57A of the catch member 50A hits and engages with the operation member 70A attached to the upper frame W1. At this time, the shoji V is in an open state with a little remaining.

  Further, when the shoji V is closed, the engaging member 57A of the catch member 50A is pushed by the operation member 70A, and the catch member 50A is counteracted in plan view around the screw 52A against the urging force of the tension coil spring 54A. By rotating in the clockwise direction, the guide roller 56A is removed from the recess 24A of the guide rail portion 1A, and the guide rail portion 1A and the retracting frame portion 2A can be moved separately. Thereafter, since the retracting frame portion 2A is urged toward the summing side of the shoji V by the weight portion 4, the engaging portion 58A of the catch member 50A engages with the operation member 70A, and the retracting frame portion 2A Held in position. On the other hand, since the shoji V is pushed in the closing direction by the load of the weight portion 4 acting on the pulley 77 provided in the shoji V, the shoji V is closed without moving the shoji V by human power or the like. As the shoji V closes, the pulley 77 moves with the shoji V, so that the weight portion 4 moves down in the vertical shaft V3. While the two one-way rotation dampers 34A and 35A of the pull-in frame 31A of the pull-in part 2A are engaged with the rack 17A of the guide rail part 1A, both the one-way rotation dampers 34A, Under the rotational resistance of 35A, the guide rail portion 1A moves slowly, and thus the shoji V to which the guide rail portion 1A is fixed closes slowly. Thus, at the beginning of the operation of the retractor, the moving speed of the shoji V is slow. Therefore, when the shoji V is closed quickly, the moving speed of the shoji V is decelerated, thereby preventing accidents such as finger jamming.

  Furthermore, when the shoji V is closed, the pinion 36A of one of the two one-way rotation dampers 34A, 35A is disengaged from the rack 17A and is positioned at the linear portion 18A. As a result, the guide rail portion 1A moves by receiving only the rotational resistance of the one-way rotating damper 35A meshing with the rack 17A, so that the guide rail portion 1A (and hence the shoji V) moves slightly faster than before. It becomes like this. In this example, the rotational resistance of the unidirectional rotational damper 34A is set to be larger than that of the unidirectional rotational damper 35A. Therefore, the rotational resistance of only the unidirectional rotational damper 35A is due to the two unidirectional rotational dampers 34A and 35A. Less than half of the rotational resistance. Thereafter, the shoji V is closed to the fully closed state.

  The guide roller 56A moves along the inclined portion 22A and the linear portion 21A of the roller guide portion 20A of the guide rail portion 1A. Thereby, the posture of the catch member 50A when moving the shoji V is controlled, the engaging portion 58A of the catch member 50A is engaged with the operation member 70A, and the retracting frame portion 2A is held at the same position.

  On the other hand, when the shoji V is opened from the fully closed state, the guide rail portion 1A moves together with the shoji V to the center in the left-right direction of the frame body W, and the weight 4 rises in the vertical rod V3. A force due to the load of the weight portion 4 acts on the shoji V at this time in a direction in which the shoji V is closed via the pulley 77. At this time, the guide roller 56A moves along the linear portion 21A and the inclined portion 22A of the roller guide portion 20A of the guide rail portion 1A. Thereby, the posture of the catch member 50A when moving the shoji V is controlled, the engaging portion 58A of the catch member 50A is engaged with the operation member 70A, and the retracting frame portion 2A is held at the same position. In addition, when the guide rail portion 1A moves in this direction, the rotational resistance of the unidirectional rotating dampers 34A and 35A does not occur.

  Furthermore, when the shoji V is opened and the guide roller 56A of the retracting frame portion 2A comes to the position of the concave portion 24A of the guide rail portion 1A, the catch member 50A is pushed by the operating member 70A with its engaging portion 58, Pulled by the tension coil spring 54A and rotated clockwise around the screw 52A in plan view, the guide roller 56A falls into the recess 24A and is engaged with the recess 24A. Then, the guide rail portion 1A, the pull-in frame 2A, and the weight portion 4 are integrated and move together with the shoji V, and thereafter, the shoji V opens regardless of the pull-in device.

  Although the urging force of the weight portion 4 is constant, since the inclined portion 22A is provided between the linear portion 21A and the concave portion 24A of the roller guide portion 20A, the roller guide portion 20A and the guide generated when the shoji V is opened. The sliding resistance with the roller 56A is reduced, thereby reducing the operating force when the shoji V is opened, and the guide roller 56A can smoothly enter and exit the recess 24A, and the shoji V can be opened and closed smoothly. .

Next, the operation of the return member 72A will be described with reference to FIGS.
When the shoji V is opened by a predetermined amount or more, as described above, the guide roller 56A of the catch member 50A is engaged with the recess 24A, and when the shoji V is closed, the engaging portion of the catch member 50A is engaged. 58A engages with the operation member 70A. However, when the shoji V is installed, or when the catch member 50A is rotated by touching it with the hand, the engaging portion 58A of the catch member 50A is operated. The retracting frame 31A may be retracted without being engaged with the member 70A. If this happens, the retractor will not function.

In such a case, when the shoji V is closed and then opened again, the guide roller 56A of the catch member 50A is engaged with the recess 24A by the return member 72A.
That is, when the shoji V is closed while the operation member 70A is positioned closer to the door-end than the catch member 50A, the shoji V is closed until the door-side end of the catch member 50A hits the operation member 70A. . At this time, the return member 72A attached to the shoji V together with the operation member 70A hits the catch member 50A and falls to the operation member 70A side, and then returns to an oblique state by the biasing force of the torsion coil spring 75A. Is positioned between the engaging portion 57A and the engaging portion 58A of the catch member 50A.

Thereafter, when the shoji V is opened, the return member 72A engages with the engaging portion 58A of the catch member 50A, and holds the catch member 50A in that position against the urging force of the weight portion 4. When the concave portion 24A of the guide rail portion 1A comes to the position of the guide roller 56A of the catch member 50A, the guide roller 56A falls into the concave portion 24A and is engaged. When the guide roller 56A is positioned in the recess 24A, the return member 72A is disengaged from the engaging portion 58A of the catch member 50A, and thereafter, the shoji V is opened regardless of the retracting device.
In the normal state where the operating member 70A is engaged with the engaging portion 58A of the catch member 50A, the distal end portion of the return member 72A is pressed by the upper end of the pull-in frame 31A, and the engagement of the catch member 50A. The engaging portion 58A is not engaged.

  In the sliding door retracting device configured as described above, when the retracting member 31A is retracted in a state where the engaging portion 58A of the catch member 50A is not engaged with the operation member 70, the shoji V It is possible to return to a state where it can be automatically operated normally by the return member 72A simply by performing an operation of opening after closing.

  In the first embodiment described above, the apparatus main body H is attached to the upper frame W1 of the frame W of the sliding door T, and the operation unit S is attached to the upper arm V1 of the sliding door V of the sliding door T. 32, the apparatus main body H may be attached to the upper arm V1 of the sliding door V of the sliding door T, and the operation unit S may be attached to the upper frame W1 of the frame W of the sliding door T. FIG. 32 shows the shoji V fully closed. In the third embodiment shown in FIG. 32, one end of a rope 85 is fixed to the end of the pull-in frame 31 on the summing side of the shoji V, and the rope 85 is wound around a pulley 86 fixed to the shoji V. After the rotation, one end portion of the tension coil spring 39 is attached to the other end portion of the rope 85, and the other end portion of the tension coil spring (spring) 39 is attached to the guide rail portion 1. The rope 85, the pulley 86, and the spring 39 function as a pulling biasing member that pulls the pulling frame 31. Further, in the embodiment of FIG. 32, the spring force adjusting unit 3 is not provided.

  In the second embodiment described above, the apparatus main body HA is attached to the upper arm V1 of the sliding door V of the sliding door T, and the operation unit SA is attached to the upper frame W1 of the frame W of the sliding door T. 33, the apparatus main body HA may be attached to the upper frame W1 of the frame W of the sliding door T, and the operation unit SA may be attached to the upper arm V1 of the sliding door V of the sliding door T. In FIG. 33, the left shoji V indicates a fully closed state, and the right shoji V indicates a state immediately before being pulled by the retracting device. In the fourth embodiment shown in FIG. 33, the weight portion 4 is provided in the vertical frame W3. Further, in the embodiment of FIG. 33, a case is shown in which the retracting device of the present invention is provided in both of the two shoji V (the external shoji V and the internal shoji V).

  In each of the above-described embodiments, the retracting device of the present invention is provided at the upper part of the sliding door. However, the retracting device of the present invention may be provided at the lower part of the sliding door.

  In each of the above-described embodiments, the unidirectional rotating damper is used. Instead, a linear damper (damper) 90 such as a shock absorber as shown in FIG. 34 may be used. For example, in the fifth embodiment shown in FIG. 35, a linear damper 90 is used instead of the unidirectional rotating dampers 34 and 35 in the embodiment of FIG. In this case, the main body portion 91 of the linear damper 90 is fixed to the shoji V, and the retractable frame 31 is fixed to the piston portion 92. FIG. 35 shows the shoji V when fully closed. For example, in the sixth embodiment shown in FIG. 36, a linear damper 90 is used in place of the one-way rotating dampers 34 and 35 in the embodiment shown in FIG. In this case, the main body portion 91 of the linear damper 90 is fixed to the frame body W, and the retractable frame 31 is fixed to the piston portion 92. FIG. 36 shows the shoji V fully closed. As shown in FIG. 37, the linear damper 90 has a shock absorbing property when the pushing speed is high, and generates a constant pushing force when operating a normal sliding door, but a light force when pushing at a low speed. It is desirable to have a characteristic capable of operating in

  Further, in each of the above-described embodiments, the case where the sliding door retracting apparatus of the present invention is applied to a two-story sliding door has been described. However, the present invention is not limited to this, and a four-storied sliding door or piece is used. The present invention can also be applied to a sliding door or the like, and can also be applied to a sliding door that opens and closes on a groove or a sliding door that opens and closes on a hanger rail.

It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 1st Embodiment of this invention was installed, Comprising: It is a front view. FIG. FIG. It is a top view which shows the drawing-in apparatus of a sliding door. It is a front view which notches and shows the drawing-in apparatus of a sliding door. It is a principal part enlarged view of FIG. It is a principal part enlarged view of FIG. (A) is sectional drawing which follows the AA line of FIG. 7, (b) is sectional drawing which follows the BB line of FIG. 7, (c) is sectional drawing which follows the CC line of FIG. FIG. It is a figure which shows a guide rail part, Comprising: (a) is a top view, (b) is a front view which notches and shows a part, (c) is a longitudinal cross-sectional view. It is a figure which shows a drawing frame part, Comprising: (a) is a top view, (b) is a front view. It is a front view which shows a spring force adjustment part. It is a front view which shows an operation part. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a top view for demonstrating operation | movement of the drawing-in apparatus of a sliding door. It is a front view for demonstrating the effect | action of a return member. It is a front view for demonstrating the effect | action of a return member. It is a front view for demonstrating the effect | action of a return member. It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 2nd Embodiment of this invention was installed, Comprising: It is a front view. FIG. It is a top view which shows the drawing-in apparatus of a sliding door. It is a front view which notches and shows the drawing-in apparatus of a sliding door. It is a principal part enlarged view of FIG. It is a principal part enlarged view of FIG. (A) is sectional drawing which follows the A'-A 'line of FIG. 27, (b) is sectional drawing which follows the B'-B' line of FIG. 27, (c) is C'- of FIG. It is sectional drawing which follows a C 'line. It is a figure which shows a guide rail part, Comprising: (a) is a cross-sectional view, (b) is a front view which notches and shows a part, (c) is a longitudinal cross-sectional view. It is a figure which shows a drawing frame part, Comprising: (a) is a top view, (b) is a front view. It is a front view which shows an operation part. It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 3rd Embodiment of this invention was installed, (a) is a top view, (b) is a front view. It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 4th Embodiment of this invention was installed, Comprising: (a) is a top view, (b) is a front view. It is a figure which shows a linear damper, Comprising: (a) is a top view, (b) is a side view. It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 5th Embodiment of this invention was installed, Comprising: (a) is a top view, (b) is a front view. It is a figure which shows the sliding door in which the drawing-in apparatus of the sliding door which concerns on the 6th Embodiment of this invention was installed, Comprising: (a) is a top view, (b) is a front view. It is a figure for demonstrating the characteristic of a linear damper.

Explanation of symbols

T Sliding door W Frame V Shoji H, HA Device main body 1, 1A Guide rail portion 20, 20A Roller guide portion 24, 24A Recess 31, 31A Retraction frame (retraction member)
34, 35, 34A, 35A One-way rotating damper (damper)
50, 50A Catch member 56, 56A Guide roller 70, 70A Operation member 72, 72A Return member 75, 75A Torsion coil spring (biasing member)
90 Linear damper (damper)

Claims (2)

The apparatus main body provided in the frame of the sliding door, the operation member provided in the shoji of the sliding door, and can be rotated to the operation member side from the operation member of the shoji to the door end side and returned by the biasing member A return member provided in a possible manner,
The device body is
A guide rail portion provided in the frame body and provided with a recess and a roller guide portion in this order toward the closing direction of the shoji,
A pull-in member provided on the guide rail portion so as to be reciprocally movable in parallel with the moving direction of the shoji,
An energizing member for energizing the retracting member in the closing direction of the shoji,
A damper that provides resistance to the pulling member when the pulling member is pulled by the pulling biasing member;
A catch member provided with a guide roller and rotatably provided on the pull-in member, wherein the guide member is rotated by being engaged with the operation member by the movement of the shoji in the closing direction. When the guide roller engaged with the recess moves to the roller guide portion, the pull-in member can be moved, and the guide roller engages with the operation member and can move together. By moving the roller guide portion, the engagement state with the operation member can be maintained, and the guide roller moves from the roller guide portion to the concave portion by moving the shoji in the opening direction. The catch that is rotated by the operation member and is disengaged from the operation member, and the guide roller is engaged with the concave portion to make the retracting member immovable. And a wood,
The return member is operated when the operation member is not engaged with the catch member and the retracting member is retracted, and the operation member is positioned closer to the shoji summoning side than the catch member. When closing the shoji until the member hits the catch member, it hits the catch member and falls to the operation member side, and then returns by the biasing member and engages the catch member.
A sliding door retracting device characterized by that. An operation member provided on the frame of the sliding door, and a return member provided so as to be rotatable to the operation member side from the operation member of the frame to the operation side of the shoji and to be returned by the biasing member. A device body provided on the sliding door shoji,
The device body is
A guide rail portion provided in the shoji, wherein a recess and a roller guide portion are formed in this order toward the opening direction of the shoji,
A pull-in member provided on the guide rail portion so as to be reciprocally movable in parallel with the moving direction of the shoji,
A biasing member for pulling in which the pulling member is biased in the closing direction when the pulling frame is biased in the opening direction, and when the pulling frame is immovable by the operation member,
A damper that provides resistance to the guide rail when the shoji is pulled in the closing direction by the pulling biasing member;
A catch member provided with a guide roller and rotatably provided on the pull-in member, wherein the guide member is rotated by being engaged with the operation member by the movement of the shoji in the closing direction. When the guide roller engaged with the recess moves to the roller guide portion, the guide roller engages with the operation member to make the retracting frame immovable, and the guide roller moves the roller guide portion. Thus, the engagement state with the operation member can be maintained, and the guide roller is rotated by moving from the roller guide portion to the concave portion by the movement of the shoji in the opening direction, and the operation member A catch member that is disengaged with the guide roller and is engaged with the concave portion to allow the pulling member to move,
The return member is operated when the pull-in member is pulled in the state where the catch member is not engaged with the operation member, and the operation member is positioned closer to the door side of the shoji than the catch member. When the shoji is closed until the catch member hits a member, it hits the catch member and falls to the operation member side, and then returns to the biasing member and engages the catch member.
A sliding door retracting device characterized by that.

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