JP6887095B2 - Sliding door device - Google Patents

Description

The present invention relates to a sliding door device.

Conventionally, sliding doors provided with rolling elements such as runners and door rollers that are free to run along the upper rail and the lower rail have been known. Such a sliding door can be opened and closed relatively smoothly because the rolling element travels along the rail. However, if the sliding door tries to pass through the opening while leaning against a pull tab or the like, the sliding door will move rapidly due to its inertial force. It is conceivable that it becomes easier to move to the open side and the balance is easily lost.
For example, in Patent Document 1 below, a cylindrical bracket through which a wire having both ends fixed to an upper portion of a frame is inserted is fixed to the upper end of a sliding door, and air is applied to the lid members at both ends of the bracket. A braking unit provided with a wire insertion hole that also serves as an outflow port is disclosed. Further, this braking unit is an elastic body in which two stoppers and two sliders are provided between the stoppers on the wire in the bracket, and the inner peripheral surface of the bracket is contacted between these sliders to generate a frictional force. Is provided. Further, this braking unit can be smoothly opened and closed at a normal opening / closing speed in the case of a normal opening / closing operation, and air of the lid member flows out so that the opening / closing operation of the sliding door is braked when the braking unit is opened and closed vigorously. The size of the hole is set.

Utility Model Registration No. 3201860 Gazette

However, the braking unit described in Patent Document 1 is configured to brake the sliding door by increasing the air pressure in the air chamber in the bracket when the sliding door is opened vigorously. Therefore, if the sliding door is not opened vigorously at the beginning of opening, it is difficult to brake the sliding door, and further improvement is desired.

The present invention has been made in view of the above circumstances, and provides a sliding door device capable of suppressing acceleration of a sliding door after an initial opening section while being able to smoothly move the sliding door in a closed position to the opening side. It is an object.

In order to achieve the above object, the sliding door device according to the present invention is a sliding door device provided with a door body having a rolling element that rolls along a rail arranged on one side in the vertical direction at one end in the vertical direction. Therefore, when the door body is continuously moved from the closed position to the open side, from the end position of the opening initial section until the operating load required for moving the door body is sharply reduced from the stopped state. It is characterized in that it is provided with a load applying mechanism that applies a load that acts as a resistance to the door body so as to require an operating load of 2N to 6N over the entire area up to the end position of the predetermined section.

The sliding door device according to the present invention has the above-described configuration, so that the sliding door in the closed position can be smoothly moved to the open side, but the acceleration of the sliding door after the initial opening section can be suppressed.

(A) is a schematic front view schematically showing an example of a sliding door device according to an embodiment of the present invention, and (b) is a partial fracture schematic cross section corresponding to the X-ray arrow viewing in (a). It is a top view. (A) and (b) are schematic front views of partial fracture corresponding to the Z1 portion in FIG. 1 (a). (A) and (b) are schematic front views of partial fracture corresponding to FIG. (A) is a schematic vertical sectional view of a partial break corresponding to the arrow of YY in FIG. 1 (a), and FIG. 1 (b) is a schematic partial break of a part corresponding to (a). It is a vertical sectional view. It is a graph which shows typically the relationship between the operating load and the distance when moving an example of the sliding door device from a closed position to an open side. (A) and (b) schematically show the sliding door device according to another embodiment of the present invention, and are the partial fracture schematic front views corresponding to the Z2 part in FIG. 1 (a). (A) is a schematic vertical sectional view of a partial breakage schematically showing the sliding door device, and (b) is a schematic vertical sectional view of a partial breakage corresponding to (a).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In some figures, some of the detailed codes attached to the other figures are omitted.
Further, in each of the following embodiments, directions such as a vertical direction will be described with reference to a state in which the sliding door device according to each embodiment is installed.

1 to 4 are diagrams schematically showing an example of a sliding door device according to the first embodiment.
As shown in FIGS. 1 and 2, the sliding door device 1 according to the present embodiment is a door body in which a rolling element 11 that rolls along a rail 7 arranged on one side in the vertical direction is provided at one end in the vertical direction. It has 10. In the present embodiment, a rolling element 11 that rolls along the upper rail 7 constituting the rail arranged on the upper side as one side in the vertical direction is provided at the upper end portion of the door body 10 as one end portion in the vertical direction. It has a structure. That is, in the present embodiment, the door body 10 is suspended and supported by the upper rail 7 and built in a hanging type.

The sliding door device 1 is not limited to a residence, but may be installed in public facilities such as medical facilities, welfare facilities, miscellaneous schools, various stores, commercial facilities, factories, etc., and is not limited to indoors but outdoors. It may be installed in.
In the present embodiment, the sliding door device 1 is configured to include a single door body 10 arranged in a single-pull shape. In the illustrated example, the door body 10 is provided so as to open and close the opening 9 which is an entrance / exit provided in the wall body such as a partition wall, and the sleeve wall is housed in the sleeve wall provided in a part of the wall body. It shows an example of building with a payment. Further, an example is shown in which the door body 10 is built on a door frame provided with an upper frame 3, a door tip side vertical frame 4, a door tail side vertical frame 5, and an intermediate vertical frame (middle vertical) 6. Further, in the figure, an example is shown in which the upper side of the opening 9 and both sides in the opening width direction are partitioned by the upper frame 3, the door end side vertical frame 4, and the intermediate vertical frame 6. The lower side of the opening 9 may be partitioned by a lower frame, but in the illustrated example, it is partitioned by the floor 2.

Further, as shown in FIG. 4, an example is shown in which the upper frame 3 is provided with a concave groove that opens downward to receive the upper rail 7 over the entire length. Further, on the prospective surface (opposing surface) of the door end side vertical frame 4 and the door end side vertical frame 5, each end of the door body 10 in the door width direction is provided with a door jar groove over the entire length. (See also FIG. 1 (b)). Further, an example is shown in which a gap shielding member (mohair member) is provided at the end of the intermediate vertical frame 6 on the side facing the door body 10 so as to slide on the surface facing the sleeve wall of the door body 10. There is.
It should be noted that these door frames 3, 4, 5, 6 may be fixed to an appropriate frame base, and the sliding door device 1 is grasped as having these door frames 3, 4, 5, 6. You may try to do it. Further, in the figure, an example in which these door frames 3, 4, 5, and 6 are shaped like a fixed frame is shown, but it may be shaped like a casing frame provided with a casing frame. Further, instead of providing such door frames 3, 4, 5, and 6, the openings 9 may be partitioned by an interior finish surface such as a frameless cross finish or other finish surfaces.

The upper rail 7 has a long shape in the door width direction of the door body 10 and has a uniform cross-sectional shape over the entire length. The length dimension of the upper rail 7 is an appropriate dimension so that the upper end side of the door body 10 that moves between the closed position and the fully open position can be guided, for example, a door between a pair of vertical frames 4 and 5. The dimensions correspond to the dimensions along the width direction.
Further, the upper rail 7 is provided with a rail groove extending in the longitudinal direction and opening in one direction. This rail groove is provided over the entire length of the upper rail 7, and in the present embodiment, as shown in FIG. 4, it is provided so as to open downward. The upper rail 7 is provided with a top wall portion for partitioning the upper side, which is the groove bottom side of the rail groove, and both side wall portions for partitioning both sides in the groove width direction. Further, a guide piece portion is provided at the lower end portion of both side wall portions so as to project in a direction facing each other. The upper rail 7 may be embedded in the ceiling.

The door body 10 has a substantially rectangular flat plate shape. Further, as shown in FIG. 1B, pull tabs 13 and 13 are provided on both sides of the door end side of the door body 10 in the door thickness direction. In the present embodiment, the pull tabs 13 and 13 are not digging-shaped but rod-shaped (bar-shaped) extending in the vertical direction (see also FIG. 1A). These pull tabs 13 and 13 have substantially the same configuration, and are provided so as to overlap each other when viewed in the door thickness direction.
Further, these pull tabs 13 and 13 are provided so that a gap into which fingers can be inserted is formed between the door body 10 and the door end side vertical frame 4 in a state where the door body 10 closes the opening 9. Further, the pull tab 13 provided on the sleeve wall surface side of the door body 10 is provided so that a gap into which fingers can be inserted is formed between the door body 10 and the intermediate vertical frame 6 in a state where the door body 10 is fully opened. ing.

That is, in the fully open state, the door body 10 is arranged so that the portion on the door end side including the pull tabs 13 and 13 protrudes toward the opening 9 side rather than the inner side surface of the intermediate vertical frame 6 facing the opening 9 side. It is composed. That is, an example is shown in which the door body 10 is built so as to form a so-called leftover body. A lock mechanism that can be locked and unlocked may be provided on the pull tabs 13, 13 and the like of the door body 10. Further, the pull tabs 13 and 13 are not limited to those having such a rod shape, and may be provided in a digging shape. In this case, the door body 10 may be constructed so that a so-called leftover is not formed, that is, the opening 9 can be opened over the entire opening width direction.

The door width dimension of the door body 10 may be appropriately set according to the opening width of the opening 9 so that the opening 9 can be closed. In the present embodiment, as shown in FIG. 1, the door width dimension of the door body 10 is viewed in the direction of the intermediate vertical frame 6 and the door thickness with the door tail side end of the door body 10 in a state where the opening 9 is closed. The dimensions are such that they can polymerize. Further, the opening width of the opening 9 may be appropriately set from the viewpoint of accessibility, barrier-freeness, etc., and the effective opening width of the door body 10 is, for example, 750 mm or more, 1000 mm or more, or the like. It may be an appropriate dimension depending on the unremaining dimension.
Further, as shown in FIGS. 1A and 4A, the height dimension of the door body 10 may be the dimension from the vicinity of the floor 2 to the vicinity of the upper rail 7, for example, about 1800 mm to 2500 mm. May be. Further, the door thickness dimension of the door body 10 may be, for example, about 20 mm to 40 mm. Each dimension of such a door body 10 may be appropriately set according to the installation location, application, and the like of the sliding door device 1.

Further, as shown in FIGS. 1 and 4A, the sliding door device 1 includes a lower end guide member 8 that guides the lower end side of the door body 10. In the present embodiment, a recessed groove 12 that opens downward is provided at the lower end of the door body 10 so as to extend in the door width direction, and a guide pin that inserts (freely inserts) the lower end guide member 8 into the recessed groove 12 is provided. It has a prepared configuration.
As shown in FIG. 1B, the lower end guide members 8 are provided at a plurality of locations so as to be located directly below the movement locus of the door body 10 that moves between the closed position and the fully open position. The lower end guide member 8 may be provided so that at least one of the lower end guide members 8 is directly below the door body 10 that moves between the closed position and the fully open position.

Further, the lower end guide member 8 may be used as a magnet guide that accommodates a guide pin provided with a magnet so as to be retractable in the vertical direction and is embedded in the floor. In this case, a magnet, a magnetic material, or the like may be provided in the concave groove 12 of the door body 10 in correspondence with the lower end guide member 8.
As shown in FIG. 1 (b), the lower end guide member 8 provided at a position where the door body 10 that moves between the closed position and the fully open position always overlaps with the door body 10 is a guide portion that cannot appear and disappear in the vertical direction. It may be a fixed guide member provided with (guide pin). The lower end guide member 8 that guides the lower end side of the door body 10 may have various other configurations.

Further, as shown in FIGS. 2 and 4, the rolling element 11 provided at the upper end portion of the door body 10 is housed in the rail groove of the upper rail 7, and is housed in the rail groove of the upper rail 7 in the door thickness direction on the guide piece portion of the upper rail 7. It is said to be a roller that rolls around the axis along the axis. Further, the rolling elements 11 are provided on the runner members provided at both ends of the door body 10 in the door width direction. Further, each of the runner members on both sides in the door width direction is provided with a plurality of (two in the example) rolling elements 11 at intervals in the door width direction. Further, each of the runner members on both sides in the door width direction is provided with rolling elements 11 supported by the guide pieces on both sides of the upper rail 7 at intervals in the door thickness direction.

The door body 10 is not limited to the mode in which the door body 10 is built in the sleeve wall as shown in the figure, but may be built in the door pocket or the outset. Further, the mode is not limited to the mode in which a single door body 10 is provided in a one-sided shape, and a mode in which a plurality of door bodies 10 are provided in a draw shape or a sliding shape may be used. In this case, a load applying mechanism 20 described later may be provided to apply a load that acts as a resistance to at least one door body 10. Further, the opening 9 is not limited to the entrance / exit and the like, and may be an opening 9 for various storage and sweep-out windows.

Further, when the sliding door device 1 continuously moves the door body 10 toward the fully open position after moving the opening initial section from the closed position, the sliding door device 1 applies a predetermined operating load over the entire predetermined section. In short, it is provided with a load applying mechanism 20 that applies a load that acts as a resistance to the door body 10.
That is, the load applying mechanism 20 moves from the closing position to the ending position of the opening initial section to the fully opened position from the ending position of the opening initial section to the ending position of the predetermined section without applying a load to the door body 10. The structure is such that a load is applied to the door body 10 that is moved toward the door. That is, of the moving distance of the door body 10 moving from the closed position to the fully open position, a predetermined section from the end position of the initial opening section is a load applying section in which the load is applied to the door body 10 by the load applying mechanism 20.

In the initial opening section, when the door body 10 is moved from the closed position to the opening side by grasping the pull tab 13, the load required for the operation (operation load, operation) due to the inertial force of the door body 10 guided by the upper rail 7. It may be a section until the force) decreases sharply. That is, as shown in FIG. 5, when the door body 10 is moved from the closed position to the open side, since the door body 10 is in the stopped state, a relatively large operating load (initial operation load) is required. If this initial operation load is too large, it will be difficult to open and close the door body 10. Therefore, the mass of the door body 10 and the frictional resistance with the upper rail 7 and the like that guide the door body 10 are taken into consideration. It may be set as appropriate. For example, this initial operation load may be about 7N to 12N. Further, the initial opening section may be about several mm to several tens of mm. Further, the speed of the door body 10 when moving the opening initial section may be about 10 mm / s to 30 mm / s.

When the door body 10 is continuously moved toward the fully open position after moving the initial opening section, the operating load is sharply reduced by the inertial force of the door body 10 as shown in FIG. In FIG. 5, the transition of the operating load with respect to the moving distance of the door body 10 when the load applying mechanism 20 is not provided by the alternate long and short dash line is schematically shown, and the door body when the load applying mechanism 20 is provided by the solid line. The transition of the operating load with respect to the moving distance of 10 is schematically shown. That is, when the load applying mechanism 20 is not provided, as shown by the alternate long and short dash line in FIG. 5, the operating load when moving the door body 10 which has moved the initial opening section toward the fully opened position is extremely large. It becomes smaller (lighter), and is often around 1N, for example.
On the other hand, when the load applying mechanism 20 described later is provided, as shown by the solid line in FIG. 5, the operating load when moving the door body 10 which has moved the initial opening section toward the fully opened position is higher than the above. Will also be large. The load applying section in which the load is applied to the door body 10 by the load applying mechanism 20 may be a section excluding the initial opening section from the closed position to the fully opened position, or may be a shorter section. This load application section may be a section extending over most of the section (for example, 3/5 or more) from the closed position to the fully open position excluding the initial opening section. Further, for example, the load application section may be set so that the balance is not easily lost when the load application section is moved to the fully open position while leaning against the moved door body 10 (puller 13). ..

Further, the operating load (the operating load in the state where the load is applied by the load applying mechanism 20) when moving the load applying section continues toward the fully opened position of the door body 10 after moving the opening initial section. It may be set as appropriate so that acceleration can be suppressed when the object is moved. Further, the operating load when moving this load-adding section is when the door body 10 is continuously moved toward the fully open position while leaning against the door body 10 (puller 13) after moving the initial opening section. It may be set as appropriate so that the balance is not easily lost.
For example, the operating load when moving the load application section may be smaller than the initial operating load, for example, about 2N to 6N, and preferably about 3N to 5N. If the operating load when moving this load-adding section is made too small, the door body 10 can easily accelerate due to the inertial force of the door body 10 that has moved in the initial opening section, and the door body 10 (puller 13) can be used. It tends to lose balance when leaning on it. On the other hand, if the operating load when moving the load applying section is made too large, it tends to be difficult to operate the door body 10. The operating load when moving the load-adding section may be substantially constant over the entire load-adding section, but may fluctuate within the above range.

In the present embodiment, as shown in FIGS. 2 and 3, the load applying mechanism 20 is rotated by the rotation applying unit 26 and the rotation applying unit 26 accompanied by the movement of the door body 10 which has moved in the initial opening section to the opening side. It is configured to include a braking mechanism 22 that applies a braking force to the rotation of the rotating body 21 to be performed.
The rotation imparting portion 26 is provided so as to extend in the door width direction on one of the upper side as one side in the vertical direction and the upper end portion as one end in the vertical direction of the door body 10. In the present embodiment, the rotation imparting portion 26 is arranged on the upper side of the door body 10 so as to extend in the door width direction along the longitudinal direction of the upper rail 7.

Further, in the present embodiment, the rotation imparting portion 26 is a rack in which a large number of tooth portions with which the rotating body 21, which will be described later, mesh with each other are provided at intervals in the longitudinal direction. The rotation applying portion 26 is arranged so as to be positioned according to the load applying section. That is, the length dimension of the rotation applying portion 26 is set according to the dimension along the slide direction of the load applying section. In the illustrated example, an example in which the rotation imparting portion 26 is provided so as to be along the upper edge of the opening 9 is shown. Further, the rotation imparting portion 26 is arranged so as to be placed on the upper surface of the one-sided end portion in the prospective direction provided so as to protrude from the wall body of the upper frame 3, and the tooth portion faces upward. An example is shown (see also FIG. 4). In addition, instead of such a mode, the rotation imparting portion 26 may be provided on the upper rail 7. Further, the rotation imparting portion 26 may be provided in an embedded shape in the upper frame 3 or the upper rail 7 so as to be inconspicuous, or may be provided with a cover or the like for covering the rotation imparting portion 26. Good.

As shown in FIGS. 2 to 4, the rotating body 21 and the braking mechanism 22 are the other of the upper side as one side in the vertical direction and the upper end portion as one end in the vertical direction of the door body 10, that is, the present embodiment. Then, it is provided at the upper end of the door body 10. Further, in the present embodiment, the rotating body 21 and the braking mechanism 22 are provided at the upper end portion of the door body 10 on the door end side. In the illustrated example, these rotating bodies 21 and the braking mechanism 22 are provided so as to be located substantially directly above the pull tab 13 provided at the end on the door end side when viewed from the front (viewed in the door thickness direction). Shown.

In the present embodiment, the rotating body 21 is a gear (spur gear) that meshes with the rack-shaped rotation imparting portion 26. The rotation applying portion 26 described above is provided so that when the door body 10 moves in the load applying section, the rotating body 21 provided at the end on the door end side meshes with the rotating body 21. Further, the rotating body 21 is rotatable around an axis along the door thickness direction. When the rotating body 21 and the braking mechanism 22 are provided at the door tail side end portion of the door body 10, the rotation imparting portion 26 may be provided so as to be along the upper end portion of the sleeve wall. .. Further, the rotating body 21 and the braking mechanism 22 may be provided at both ends of the door body 10 in the door width direction, and rotation imparting portions 26 corresponding to the rotating bodies 21 on both sides in the door width direction may be provided. Further, instead of the mode in which the rotating body 21 and the braking mechanism 22 are provided at the end portion of the door body 10 in the door width direction, the rotating body 21 and the braking mechanism 22 may be provided at a substantially central portion in the door width direction of the door body 10. In this case, the position where the rotation imparting portion 26 is provided may be appropriately deformed.

The braking mechanism 22 is configured such that the rotating body 21 is fixedly (non-rotatable) provided to apply a braking force to the damper shaft that rotates with the rotating body 21. As such a braking mechanism 22, a viscous resistance of a working fluid such as oil, a urging force of a spring, or the like may be used for the rotational resistance of the damper shaft. For example, the braking mechanism 22 may be a so-called rotary damper having a structure in which a rotor connected to a damper shaft is provided in a tubular case in which a working fluid is sealed. In the illustrated example, an example in which the braking mechanism 22 is provided so as to be located on the opposite wall side of the rotating body 21 is shown.

Further, the braking mechanism 22 applies a braking force (high torque) when the damper shaft rotates in one direction, while the braking force becomes extremely small (low torque, free) when the damper shaft rotates in the opposite direction. It may be a unidirectional rotary damper that is in a state). That is, when the door body 10 moves from the closed side to the fully open side, the braking mechanism 22 applies a relatively large braking force, while the door body 10 moves from the fully open side to the closed side. When doing so, it may be configured so that the braking force is small (the load is low).
As shown in FIGS. 2A and 2B, when the door body 10 is moved from the closed position to the opening initial section and the rotating body 21 meshes with the rotation imparting portion 26, the rotating body 21 rotates. The braking mechanism 22 is configured to apply a braking force to the rotation of the rotating body 21. That is, the braking force of the braking mechanism 22 becomes a resistance (brake) to the rotation of the rotating body 21, and a load is applied to the door body 10 that moves toward the fully open position. Further, as shown in FIGS. 3A and 3B, when the door body 10 reaches the portion near the fully open position and the rotating body 21 is separated from the rotation applying portion 26, the meshing with each other is released and the load applying mechanism is released. The load on the door body 10 by 20 is removed.

Appropriately according to the mass of the door body 10 and the frictional resistance with the upper rail 7 or the like that guides the door body 10 so that the operation load of the load application section described above becomes the predetermined operation load as described above. The braking mechanism 22 having the braking force of the above may be adopted. Further, the braking mechanism 22 may be configured to apply a substantially constant braking force to the rotating body 21 when the door body 10 moves toward the fully open position in the load application section.
In the present embodiment, it is assumed that the braking force (torque, rotational resistance) of the braking mechanism 22 can be adjusted. As such a braking mechanism 22, the gap (clearance) between the case and the rotor may be adjusted by rotating the operation unit 23, and the braking force may be adjusted.

Instead of the mode in which the damper shaft of the braking mechanism 22 is fixedly provided so as to rotate with respect to the rotating body 21, the rotating body on the damper side such as a gear fixed to the damper shaft of the braking mechanism 22 is a rotating body. It may be configured to be rotated by 21. Further, the braking mechanism 22 is not limited to the rotary damper, but may be a high torque bearing or the like, or a cylinder-shaped damper (shock absorber) having a rod that can be expanded and contracted. In this case, an appropriate link mechanism, rack, or the like for converting the rotation of the rotating body 21 into linear motion may be provided, and such a linear motion member may be connected to the rod of the braking mechanism 22. As the braking mechanism 22 that applies a braking force to the rotating body 21 that is rotated by the rotation applying portion 26, various other modifications are possible, and those having various configurations can be adopted.

Further, in the present embodiment, the load applying mechanism 20 is configured to be able to be switched between a state in which a load is applied to the door body 10 (load applying state) and a state in which the load is not applied (non-applying state). In the present embodiment, the rotating body holding portion 25 that holds the rotating body 21 in a vertically displaceable manner is provided so that the rotating body 21 can be brought into contact with and detached from the rotating body 21 in the load applying section. The structure is provided at the upper end of the door body 10 (upper end on the door end side). That is, as shown in FIG. 4A, if the rotating body 21 is positioned on the lower side (lower limit) of the rotating body holding portion 25 (door body 10), it is possible to engage with the rotating body 26. It becomes a state. On the other hand, as shown in FIG. 4B, if the rotating body 21 is positioned on the upper side (upper limit) of the rotating body holding portion 25 (door body 10), it is impossible to engage with the rotating body 26. It becomes a state.

Further, a rod-shaped connecting portion 24 having an elongated shape in the vertical direction is connected to the lower side of the braking mechanism 22, and the lower end portion of the rod-shaped connecting portion 24 can be freely displaced in the vertical direction with respect to the rotating body holding portion 25. It has a retained configuration. That is, the rotating body 21 is configured to be freely displaceable in the vertical direction with respect to the rotating body holding portion 25 via the braking mechanism 22 and the rod-shaped connecting portion 24.
Further, the rotating body holding portion 25 is provided with a lower limit holding portion 25a that suppresses the movement of the rotating body 21 in the vertical direction, which is positioned on the lower side so as to be able to mesh with the rotation applying portion 26. Further, the rotating body holding portion 25 is provided with an upper limit holding portion 25b for suppressing the vertical movement of the rotating body 21 positioned on the upper side so as to be a position where the meshing with the rotation applying portion 26 is released. Has been done. At the lower end of the rod-shaped connecting portion 24 connected to the rotating body 21 via the braking mechanism 22, the held portion 24a is held by engaging with the lower limit holding portion 25a and the upper limit holding portion 25b of the rotating body holding portion 25. Is provided.

In the illustrated example, the rotating body holding portion 25 is provided with a recess that is elongated in the vertical direction and opens toward one side in the door thickness direction, and the lower end portion of the rod-shaped connecting portion 24 is directed toward the other side in the door thickness direction. An example is shown in which a protrusion is provided so as to project and be fitted and held in a recess of the rotating body holding portion 25 so as to be vertically movable. Further, the lower limit holding portions 25a and 25a and the upper limit holding portions 25b and 25b are provided on the lower side portion and the upper side portion of the inner surfaces of both sides of the recess of the rotating body holding portion 25 facing in the door width direction, respectively. Further, the held portions 24a and 24a are provided on both sides of the protruding portion of the lower end portion of the rod-shaped connecting portion 24 in the door width direction.
The lower limit holding portions 25a and 25a and the upper limit holding portions 25b and 25b may be leaf springs or the like having protrusions so as to project in the door width direction. Further, the held portion 24a may be formed in a concave shape for receiving the lower limit holding portions 25a and 25a and the upper limit holding portions 25b and 25b having the protrusion shape. In addition, the upper and lower holding portions 25a and 25b and the held portions 24a held by these can be deformed in various ways.

Further, an operation unit for switching the load application mechanism 20 may be provided, and the rod-shaped connecting unit 24 and the braking mechanism 22 are grasped as the operation unit, and the operation unit is moved up and down to move the load application mechanism 20. The switching operation may be performed.
Further, in the illustrated example, the rotating body holding portion 25 is fixed so as to be along one surface in the door thickness direction of the door body 10, but it may be configured to be embedded in the door body 10. The rotating body holding portion 25 may have various other configurations.
Further, the sliding door device 1 has a shock absorbing mechanism for cushioning the impact of the door body 10 moving toward both or one of the closed position and the fully open position, and an automatic closing that assists the door body 10 toward the closed position. It may be configured to be provided with a mechanism or the like.

The sliding door device 1 according to the present embodiment has the above-described configuration, so that the door body 10 in the closed position can be smoothly moved to the open side, but the door body 10 can be accelerated after the initial opening section. It can be suppressed.
That is, the rolling element 11 that rolls along the rail (upper rail) 7 arranged on one side in the vertical direction is provided with the door body 10 provided at one end (upper end) in the vertical direction. Therefore, when the door body 10 is moved in the opening / closing direction, the rolling element 11 rolls along the upper rail 7, so that the door body 10 can be moved smoothly.

Further, when the door body 10 is continuously moved from the closed position to the open initial section and then continuously moved to the predetermined section (load application section) toward the fully open position, the predetermined operating load is applied over the entire load application section. A load applying mechanism 20 for applying a load acting as a resistance to the door body 10 is provided so as to require the above. Therefore, when moving the initial opening section from the closed position, the door body 10 at the closed position can be smoothly moved to the open side without the load applied by the load applying mechanism 20 being applied to the door body 10. In addition, a load that acts as a resistance can be applied to the door body 10 after moving in the initial opening section that is about to move to the open side by inertial force, and the door body 10 is moved so as to lean against the door body 10. It is possible to prevent the door body 10 from accelerating even when it is attempted to be opened. As a result, it is possible to prevent an operator such as hemiplegia or an elderly person who has unstable walking from losing his / her balance when opening the door body 10.

Further, in the present embodiment, the load applying mechanism 20 is provided with a rotation applying portion 26 provided so as to extend in the door width direction on one side in the vertical direction and one end portion in the vertical direction of the door body 10. There is. Further, a load applying mechanism 20 is provided on the other side, and a braking force is applied to the rotation of the rotating body 21 rotated by the rotation applying unit 26 with the movement of the door body 10 that has moved in the initial opening section to the opening side. The braking mechanism 22 is provided. Therefore, the rotation imparting portion 26, the rotating body 21, and the braking mechanism 22 are located on the side of the door body 10 provided with the rolling body 11 (upper side in the present embodiment) in the vertical direction. As a result, the rotating body 21 is provided in the vertical direction on a side different from the side on which the rolling body 11 is provided (in the present embodiment, the lower side). Can be stably rotated by the rotation imparting unit 26. That is, the rotation imparting portion 26 and the rotating body 21 are affected by the influence of the runout or the like that tends to occur when the door body 10 moves on the side different from the side where the rolling body 11 of the door body 10 is provided in the vertical direction. It can be difficult to give.

Further, in the present embodiment, the rotating body 21 is provided at one end in the vertical direction of the door body 10, and the rotation imparting portion 26 is provided along the longitudinal direction of the rail (upper rail) 7 on one side in the vertical direction of the door body 10. It is configured so that it extends in the width direction of the door. Therefore, the load application section can be easily adjusted by adjusting the length and the arrangement position of the rotation applying portion 26.
Further, in the present embodiment, the braking mechanism 22 is assumed to be capable of adjusting the braking force. Therefore, by adjusting the braking force, it is possible to finely adjust the operating load required to move the door body 10 toward the fully opened position after moving the initial opening section.

Further, in the present embodiment, the load applying mechanism 20 can be switched between a load applying state in which a load is applied to the door body 10 and a non-applying state in which the load is not applied. Therefore, the load is applied so that the operating load required for moving the door body 10 toward the fully opened position after moving the initial opening section is not too light, or the opening operation can be performed with a light operating load. It can be set to a non-additional state or switched according to the operator.

Next, another embodiment according to the present invention will be described with reference to the drawings.
6 and 7 are diagrams schematically showing an example of the sliding door device according to the second embodiment.
The differences from the first embodiment will be mainly described, and the same configurations will be designated by the same reference numerals, and the description thereof will be omitted or briefly described.

As shown in FIGS. 6 and 7, the sliding door device 1A according to the present embodiment has a rolling element 11A that rolls along a lower rail 7A constituting a rail arranged on the lower side as one side in the vertical direction. The door body 10A is provided at the lower end portion as one end portion in the vertical direction. That is, in the present embodiment, unlike the first embodiment, the sliding door device 1A is a lower load type in which the lower rail 7A receives the load of the door body 10A. Further, the guide portion 8A is provided on the upper side of the door body 10A and guides the upper end side of the door body 10A. In the illustrated example, an example is shown in which the guide portion 8A is a guide rail for partitioning a guide groove that opens downward to receive the upper end portion 12A as the guided portion of the door body 10A. Further, an example is shown in which the upper frame 3 is provided with a concave groove into which the guide portion 8A is fitted. The upper end portion 12A of the door body 10A as a guided portion may be provided with a rolling element or the like that rolls along the inner surface of the guide groove. Further, instead of fixing the rail-shaped member to the upper frame 3 as described above, the concave groove of the upper frame 3 may be grasped as the guide portion 8A.

The lower rail 7A has a long shape in the door width direction of the door body 10A, and has a uniform cross-sectional shape over the entire length. The length dimension of the lower rail 7A is an appropriate dimension so that the lower end side of the door body 10A that moves between the closed position and the fully open position can be guided, for example, a door between a pair of vertical frames 4 and 5. The dimensions correspond to the dimensions along the width direction. Further, the lower rail 7A is provided with a rail groove that opens upward over the entire length. In the illustrated example, the lower rail 7A is provided on the floor 2, but it may be embedded in the lower frame or the floor 2.
The rolling element 11A at the lower end of the door body 10A is a roller that rolls on the bottom of the rail groove of the lower rail 7A about an axis along the door thickness direction. Although not shown, rolling elements 11A are provided at both ends of the door body 10A in the door width direction. Further, two rolling elements 11A and 11A are provided at both ends in the width direction of the door at intervals in the thickness direction of the door.

Further, the rotation applying portion 26 of the load applying mechanism 20A is arranged so as to extend in the door width direction to one of the lower side as one side in the vertical direction and the lower end portion as one end in the vertical direction of the door body 10A. It is said. In the present embodiment, the rotation imparting portion 26 is arranged on the lower side of the door body 10A so as to extend in the door width direction along the longitudinal direction of the lower rail 7A. Further, the rotation imparting portion 26 is provided on the bottom of the rail groove of the lower rail 7A so that the tooth portion faces upward.
The rotation applying portion 26 is provided so that when the door body 10A moves in the load applying section, the rotating body 21 provided at the end on the door tail side meshes with the rotating body 21 as described later. That is, in the present embodiment, the rotation imparting portion 26 is provided so as to be along the lower end portion of the sleeve wall. The position and number of the rotation imparting portions 26 may be appropriately set according to the position and number of the rotating bodies 21 as described above.
Further, as shown in FIG. 7, the rotation imparting portions 26 are provided so as not to interfere with the rolling elements 11A and 11A provided on both sides in the door thickness direction. In the illustrated example, an example in which the rotation imparting portion 26 is provided so as to be located between the rolling elements 11A and 11A provided at intervals in the door thickness direction when viewed in the longitudinal direction (direction along the door width direction) is shown. ing. Further, although an example in which the rotation imparting portion 26 is provided so as to project upward from both side wall portions of the lower rail 7A, the rotation is performed so as not to project upward from both side wall portions of the lower rail 7A. The configuration may be such that the granting portion 26 is provided.

Further, the rotating body 21 and the braking mechanism 22 of the load applying mechanism 20A are placed on the lower side as one side in the vertical direction and the lower end portion as one end in the vertical direction of the door body 10A, that is, in the present embodiment, the door. It is configured to be provided at the lower end of the body 10A. Further, in the present embodiment, the rotating body 21 and the braking mechanism 22 are provided at the lower end portion of the door body 10A on the door tail side.
Further, in the present embodiment, the rotating body holding portion 25A for holding the rotating body 21 and the braking mechanism 22 is embedded in the lower end portion of the door body 10A. At the lower end of the door body 10A, a receiving recess 14 for accommodating the rotating body holding portion 25A is provided. Further, also in the present embodiment, the rotating body 21 is displaced in the vertical direction so that the rotating body holding portion 25A can be brought into contact with and detached from the rotating body 21 in the load applying section of the door body 10A. It is configured to be held freely. That is, as shown in FIG. 7A, if the rotating body 21 is positioned on the lower side (lower limit) with respect to the rotating body holding portion 25A (door body 10A), it is possible to engage with the rotating body 26. It becomes a state. On the other hand, as shown in FIG. 7B, if the rotating body 21 is positioned on the upper side (upper limit) of the rotating body holding portion 25A (door body 10A), it is impossible to engage with the rotating body 26. It becomes a state.

Further, a rod-shaped connecting portion 24A having an elongated shape in the vertical direction is connected to the upper side of the braking mechanism 22, and the upper end portion of the rod-shaped connecting portion 24A can be freely displaced in the vertical direction with respect to the rotating body holding portion 25A. It has a retained configuration. That is, the rotating body 21 is configured to be freely displaceable in the vertical direction with respect to the rotating body holding portion 25A via the braking mechanism 22 and the rod-shaped connecting portion 24A. Further, the upper end of the rod-shaped connecting portion 24A is provided with a protrusion protruding toward one side in the door thickness direction, and the rotating body holding portion 25A is provided with an opening for exposing this protrusion on one side in the door thickness direction of the door body 10A. It has a provided configuration. The lower limit holding portions 25a and 25a and the upper limit holding portions 25b and 25b are provided on each of the lower portion and the upper portion of the inner surfaces of the openings of the rotating body holding portion 25A on both sides in the door width direction in the same manner as described above. .. Further, the held portions 24a and 24a are provided on both sides of the protruding portion of the upper end portion of the rod-shaped connecting portion 24A in the door width direction in the same manner as described above.

Further, an example is shown in which a projecting piece-shaped operating portion that is operated when moving up and down is provided at the projecting portion of the upper end portion of the rod-shaped connecting portion 24A.
Further, the lower end portion of the door body 10A is provided with an opening 15 for exposing the operation portion 23 of the braking mechanism 22.
The sliding door device 1A according to the present embodiment having the above configuration also has substantially the same effect as that of the first embodiment.

In each of the above embodiments, the braking mechanism 22 of the load applying mechanisms 20 and 20A is shown as an example in which the braking force can be adjusted, but it is assumed that the braking force cannot be adjusted. May be good. In this case, the braking mechanism 22 having an appropriate braking force may be adopted.
Further, in each of the above embodiments, an example is shown in which the rod-shaped connecting portions 24 and 24A are provided with the operation unit for switching between the load-applied state and the non-applied state, but other parts such as the pull tab 13 and the pull tab 13 thereof are shown. It may be provided in a nearby portion or the like. Further, the load applying mechanisms 20 and 20A may be such that such a switching operation is disabled.

Further, in each of the above embodiments, the rotating body 21 and the braking mechanism 22 are provided on the door bodies 10 and 10A side, and the rotation imparting portion 26 is provided along the longitudinal direction of the rails 7 and 7A on which they face each other. Although an example is shown in which the configuration is arranged in, the present invention is not limited to such an embodiment. That is, the rotation applying portion 26 of the load applying mechanisms 20 and 20A is provided at one end in the vertical direction of the door bodies 10 and 10A, and the rotating body 21 and the braking mechanism 22 of the load applying mechanisms 20 and 20A are attached to the door bodies 10 and 10A. It may be arranged so as to be located on one side in the vertical direction.
Further, the load applying mechanisms 20 and 20A are not limited to those provided with the rotation applying portion 26, the rotating body 21 and the braking mechanism 22, and other various modifications are possible.

1,1A Sliding door device 10,10A Door body 11,11A Rolling body 20,20A Load application mechanism 21 Rotating body 22 Braking mechanism 26 Rotating part 7 Upper rail (rail)
7A lower rail (rail)

Claims (4)

A sliding door device having a door body provided at one end in the vertical direction with a rolling element that rolls along a rail arranged on one side in the vertical direction.
When the door body is continuously moved from the closed position to the open side, the operation load required for moving the door body from the stopped state is a predetermined section from the end position of the initial opening section until the operation load is sharply reduced. A sliding door device including a load applying mechanism that applies a load that acts as a resistance to the door body so as to require an operating load of 2N to 6N over the entire area up to the end position. In claim 1,
The load applying mechanism is provided on one side in the vertical direction and one of the one end portions in the vertical direction of the door body so as to extend in the door width direction, and is provided on the other side and moves in the opening initial section. A sliding door device including a braking mechanism that applies a braking force to the rotation of a rotating body that is rotated by the rotation imparting portion as the door body moves to the open side. In claim 2,
The braking mechanism is a sliding door device characterized in that the braking force can be adjusted. In any one of claims 1 to 3,
The load applying mechanism is a sliding door device characterized in that it can be switched between a state in which a load is applied to the door body and a state in which a load is not applied.

Images