JP6722892B2 - Sliding door device - Google Patents

Description

The present invention relates to a sliding door device.

BACKGROUND ART Conventionally, a sliding door device that opens and closes an opening by three or more door panels that are arranged in a pulling manner is known. In such a sliding door device, the door panels on both outer sides in the thickness direction can be positioned in the closed position by abutting the corresponding vertical frames, but it is difficult to position the center door panel in the closed position. There was a problem.
For example, in Patent Document 1 below, a sliding door is provided in which a leaf spring having an arcuately bent portion is provided at a position near the vertical frame of the groove of the Kamoi, and a fitting portion for fitting the leaf spring is provided on the upper surface of the fitting. A structure is disclosed.

JP, 2000-337019, A

However, in the sliding door structure as described in Patent Document 1, it was considered that when the sliding door is opened, the leaf spring fitted to the fitting portion easily lifts the trailing edge side of the sliding door. It is conceivable that such a problem is particularly remarkable in the case where three or more door panels are provided, because the door width dimension of each door panel is relatively small.

The present invention has been made in view of the above circumstances, and it is possible to easily move the center side door panel among the three or more door panels to the closed position while smoothly moving the center side door panel. The object is to provide a sliding door device to be obtained.

In order to achieve the above object, in the sliding door device according to the present invention, an upper end is guided by a guide groove provided in an upper frame, and a lower end is provided with a door roller that travels on a lower rail. Three or more door panels, and the center side door panel of these door panels is provided so as to project upward in a state of being urged upward and rolls along the groove bottom of the guide groove. The rolling element that moves and the rolling element is arranged on the upper frame so that the rolling element engages, and the movement of the central side door panel that moves in both directions along the door width direction is suppressed to close the central side door panel. And a receiving member that is positioned at a position, and the rolling element is provided so as to be positioned at an upper end portion that is substantially directly above a pull tab provided at one end portion in the door width direction of the central side door panel. Is characterized by.

Since the sliding door device according to the present invention is configured as described above, the center side door panel among the three or more door panels can be easily positioned in the closed position, but the center side door panel is smooth. Can be moved to.

(A)-(c) shows typically an example of the sliding door apparatus which concerns on one Embodiment of this invention, (a) is a schematic front view, (b), (c) is X in (a). -A partially cutaway schematic cross-sectional view corresponding to the direction of the X-ray. It is a partial fracture schematic longitudinal cross-sectional view corresponding to the YY line arrow in FIG.1(c). (A), (b) is a partially broken schematic front view corresponding to the Z section in FIG. 1(a). It is a partially broken schematic front view which shows the sliding door apparatus typically. (A), (b) is a partially broken schematic front view which showed typically an example of the sliding door apparatus which concerns on other embodiment of this invention, and was made to respond|correspond to FIG. 3(a), (b), respectively. ..

Embodiments of the present invention will be described below with reference to the drawings.
Note that in some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.
Moreover, in each of the following embodiments, a direction such as a vertical direction will be described based on 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.
In the sliding door device 1 according to the present embodiment, as shown in FIGS. 1 and 2, the upper end portions 14, 14, 14 are guided by the guide grooves 5, 5, 5 provided in the upper frame 3, and are arranged in a pulling shape. It is equipped with three or more door panels 10, 10A, 10B. Further, door wheels 13, 13, 13 traveling on the lower rail 8 are provided at the lower ends of the door panels 10, 10A, 10B, respectively. That is, these door panels 10, 10A, 10B are constructed to be slidably mounted on the lower rail 8 in a lower load type. Further, these door panels 10, 10A, 10B are not so-called interlocking sliding doors, and each is individually arranged slidably on the lower rail 8.
In the present embodiment, the sliding door device 1 includes a first door panel 10 arranged on one side in the door thickness direction, a second door panel 10A serving as a center side door panel, and a third door panel arranged on the other side in the door thickness direction. The door panel 10B and the three door panels 10, 10A, 10B composed of the door panel 10B are provided.

Further, these door panels 10, 10A, 10B are arranged in an opening provided so as to penetrate a wall body of a building such as a residence, and an upper frame 3 forming an opening frame (door frame) and vertical frames on both sides. It will be built in 6 and 7.
As shown in FIG. 2, the upper frame 3 is provided with three guide grooves 5, 5, 5 for receiving the upper end portions 14, 14, 14 of the door panels 10, 10A, 10B so as to extend in the door width direction. ing. These guide grooves 5, 5, 5 are provided in parallel with each other at intervals in the expected direction of the upper frame 3 (direction along the door thickness direction). Further, these guide grooves 5, 5, 5 are provided so as to open toward the lower side and have a substantially rectangular groove shape when viewed in the groove longitudinal direction. Further, in the present embodiment, the guide grooves 5, 5, 5 are provided in the metal-made or hard resin-made guide groove member 4 which is embedded in the concave groove provided in the upper frame 3. There is. Instead of such an aspect, the guide grooves 5, 5, 5 may be directly provided on the upper frame 3.

The upper ends of the vertical frames 6 and 7 on both sides are joined to the respective ends of the upper frame 3 in the longitudinal direction. In the present embodiment, one end portion (door end side end portion) of the first door panel 10 in the closed position is located on the inner side surface of the first vertical frame 6 as one vertical frame on the one side in the prospective direction. The door shed groove for receiving is provided so as to extend in the longitudinal direction. A door that receives one end (door end side end) of the third door panel 10B in the closed position in the door width direction on the inner side surface of the second vertical frame 7 as the other vertical frame on the other side in the expected direction. It has a structure in which a countersink is provided so as to extend in the longitudinal direction. In addition, instead of the mode in which the vertical door frames 6 and 7 are provided with the door shedding groove for receiving the door end side end portions of the corresponding one door panel 10 and 10B, three door panels 10 and A wide door shed groove for receiving the ends of the doors 10A and 10B in the door width direction may be provided. Further, in the illustrated example, the vertical frames 6 and 7 and the upper frame 3 are shown as fixed frame shapes, but they may be so-called casing frames provided with frame members.

The lower rail 8 is arranged so as to straddle the lower ends of the vertical frames 6 and 7. The lower rail 8 is provided with three door roller grooves 9, 9, 9 in which the door rollers 13, 13, 13 of the door panels 10, 10A, 10B are movably engaged so as to extend in the door width direction. .. These door roller grooves 9, 9, 9 are provided in parallel with each other in the prospective direction of the lower rail 8 at intervals. Further, these door roller grooves 9, 9, 9 are provided so as to open toward the upper side.
In the present embodiment, the lower rail 8 is an embedded rail that is embedded in the floor 2. Note that, instead of such an aspect, the lower rail 8 may be a direct rail provided directly on the floor 2. Further, the sliding door device 1 may include the lower rail 8 and the opening frames 3, 6, and 7.

Each door panel 10, 10A, 10B is a substantially rectangular flat plate elongated in the vertical direction. The height dimension of these door panels 10, 10A, 10B is such that the upper end portions 14, 14, 14 are the upper frames when the door rollers 13, 13, 13 are engaged with the door roller grooves 9, 9, 9 of the lower rail 8. The size is set appropriately according to the opening height so that it can be inserted into the three guide grooves 5, 5, 5. The height dimensions of these door panels 10, 10A, 10B are substantially the same. In the present embodiment, the upper end portions 14, 14, 14 of the door panels 10, 10A, 10B inserted into the guide grooves 5, 5, 5 of the upper frame 3 are the same as the lower side portions of the door panels 10, 10A, 10B. It is thick. That is, the groove width dimension of the guide grooves 5, 5, 5 of the upper frame 3 is set to a dimension corresponding to the door thickness dimension of each door panel 10, 10A, 10B. Instead of such an aspect, the upper end portions 14, 14, 14 of the respective door panels 10, 10A, 10B have a protruding piece shape in which the thickness is smaller than the lower side portion of the respective door panels 10, 10A, 10B. And so on. In this case, the groove width of the guide grooves 5, 5, 5 of the upper frame 3 may be appropriately changed.

Moreover, the door thickness of these door panels 10, 10A, 10B is, for example, about 20 mm to 40 mm, which are substantially the same as each other. Further, the door width dimensions of these door panels 10, 10A, 10B are set appropriately according to the opening width so that the door panels 10, 10A, 10B in the closed position can close the openings, and the door width dimensions are substantially the same. The dimensions are the same. The door width dimension of these door panels 10, 10A, 10B is smaller than the height dimension, and may be, for example, about 1/3 to 1/6 of the height dimension. It may be about 300 mm to 600 mm. Further, in the illustrated example, the door panels 10, 10A, 10B are provided with a relatively large light-transmitting portion, but a configuration without such a light-transmitting portion may be used. Various other modifications can be made to the exterior design of the panels 10, 10A, 10B.

Further, pull tabs 11, 11, 11 are provided at door end side end portions that are one end portions in the door width direction of the door panels 10, 10A, 10B. In the present embodiment, a dug-like pull tab 11 provided with pull tab recesses so as to open toward the outer side in the door thickness direction on both sides in the door thickness direction of the door end side end of each door panel 10, 10A, 10B. , 11 are provided respectively. The pull tabs 11 and 11 on both sides in the door thickness direction are provided at midway portions in the height direction of the door end side end portions of the door panels 10, 10A and 10B so as to overlap with each other when viewed in the door thickness direction. In the illustrated example, the pull tabs 11 and 11 are shown as the pull tab members fitted into the recesses provided in the door panels 10, 10A, and 10B so as to open in the door thickness direction. Further, these pull tabs 11 and 11 are provided with elongated pull tab recesses in the vertical direction when viewed in the door thickness direction. The pull tabs 11 and 11 are not limited to the ones shown in the figures, and other various modifications are possible. For example, the pull tabs provided directly on the door panels 10, 10A and 10B may be used. In addition, in the illustrated example, the second door panel 10A is arranged such that the door end side end on the side where the pull tabs 11 and 11 are provided is located on the first vertical frame 6 side, like the first door panel 10. It shows an example built.

Further, at the lower end portions of the door panels 10, 10A, 10B, door roller holding portions 12, 12, 12 for holding the door rollers 13, 13, 13 rotatably around an axis along the door thickness direction are provided. Further, door door holding portions 12, 12, 12, 12, 12, 12 are provided at both end portions in the door width direction so as to be exposed at both end surfaces in the door width direction of each door panel 10, 10A, 10B. Further, at least the second door panel 10A of the door panels 10, 10A, 10B is provided with height adjusting portions 12a, 12a on the door roller holding portions 12, 12. As shown in FIGS. 2 and 4, the height adjusting portion 12a is provided so as to be exposed at the end face in the door width direction of the second door panel 10A (in this embodiment, all the door panels 10, 10A, 10B). It can be operated using a jig such as a screwdriver. The height adjusting unit 12a is operated by a jig to move the door roller 13 up and down relative to the door panels 10, 10A, 10B to adjust the height of the door panels 10, 10A, 10B. Is possible. That is, as shown in FIG. 4, when the height adjusting portion 12a is operated in a state where the door panels 10, 10A, 10B are built, the door roller 13 engaged with the door roller groove 9 of the lower rail 8 is removed. Each door panel 10, 10A, 10B is configured to be vertically displaced.

In addition, as shown in FIGS. 1(a) and 1(b), these door panels 10, 10A, 10B have the door end side end portion of the first door panel 10 abutted against the first vertical frame 6, The door-tip side end of the door panel 10B is brought into contact with the second vertical frame 7 and arranged side by side in the door width direction to be in the closed position. Further, at this closed position, the end portions of the door panels 10, 10A, 10B adjacent in the door thickness direction in the door width direction are arranged so as to overlap each other when viewed in the door thickness direction. That is, in the closed position, the door tail side end of the first door panel 10 and the door width direction one end (door tip side end) of the second door panel 10A are arranged so as to overlap each other when viewed in the door thickness direction. It Further, in the closed position, the door end side end of the third door panel 10B and the other end of the second door panel 10A in the door width direction (door end side end) are arranged so as to overlap each other when viewed in the door thickness direction. To be done.

On the other hand, as shown in FIG. 1C, the door panels 10, 10A, and 10B contact one end of the vertical frame 7 (the second vertical frame 7 in the example) in the door width direction. As seen in the direction of the door thickness, they are arranged so as to overlap each other, and are set to the open position (fully open position). At the fully open position, the doorway is formed on the other vertical frame 6 (first vertical frame 6 in the illustrated example) side of each door panel 10, 10A, 10B. In addition, in a state where the three door panels 10, 10A, 10B are overlapped with each other, they are positioned on the first vertical frame 6 side so that an entrance is formed on the second vertical frame 7 side, or both vertical frames 6, It is also possible to position it at an intermediate position between the vertical frames 6 and 7 so that the 7 side is opened.

As described above, the first door panel 10 and the third door panel 10B are in contact with the corresponding vertical frames 6 and 7 and can be positioned at the closed position. On the other hand, since the second door panel 10A is an intermediate part between the vertical frames 6 and 7 in the closed position, it is considered that it is difficult to position the second door panel 10A in the closed position. As shown in FIG. 3, the sliding door device 1 includes a rolling element 17 and a receiving member 20 that configure a mechanism that enables the second door panel 10A to be positioned at the closed position. The rolling element 17 is provided on the upper end portion 14 of the second door panel 10A so as to project in an upwardly biased state, and is configured to roll on the groove bottom 5a of the guide groove 5. .. In addition, the rolling element 17 is provided so as to be located at the upper end portion 14 that is substantially immediately above the pull tabs 11, 11 provided at the door end side end portion as one end portion in the door width direction of the second door panel 10A. There is. The receiving member 20 is arranged on the upper frame 3 so that the rolling elements 17 engage with each other, and suppresses the movement of the second door panel 10A that moves in both directions along the door width direction to close the second door panel 10A. It is configured to be located in.

As shown in FIGS. 1(a) and 3(b), the receiving member 20 has a rolling element 17 provided so as to be positioned almost directly above the pull tabs 11, 11 of the second door panel 10A in the closed position. It is provided on the upper frame 3 so as to be in a matching position.
Further, the receiving member 20 is provided with a receiving recess 21 that receives the upper portion of the rolling element 17 so as to open downward.
The receiving recess 21 is defined by a bottom wall 22 facing downward and inner walls 23, 24 on both sides in the door width direction facing in a direction along the door width direction. The depth dimension along the vertical direction and the dimension along the door width direction of the receiving recess 21 are such that the upper portion of the rolling element 17 is inserted into the receiving recess 21 and the movement of the second door panel 10A can be suppressed. It has an appropriate size.
Further, as shown in FIG. 2, the receiving member 20 is arranged on the groove bottom 5a side of the guide groove 5 provided on the center side of the upper frame 3 for guiding the upper end portion 14 of the second door panel 10A. It is said that.

Further, as shown in FIGS. 2 and 3, the receiving member 20 is embedded in the upper frame 3 so that the receiving recess 21 opens at the groove bottom 5a. In the illustrated example, the receiving member 20 is provided so as to be located on the center side in the groove width direction of the guide groove 5. Further, the guide groove member 4 of the upper frame 3 that defines the guide groove 5 is provided with an insertion hole 4a through which a portion of the receiving member 20 that defines the receiving recess 21 is inserted so as to penetrate in the vertical direction. .. In addition, a receiving recess 3a for receiving a portion defining the receiving recess 21 of the receiving member 20 is provided on the groove bottom of the recessed groove of the upper frame 3 so as to open downward.
Further, the receiving member 20 is configured such that the fixing piece portions arranged along the groove bottom 5 a of the guide groove 5 are provided so as to be continuous with both sides of the receiving recess 21 in the door width direction. The receiving member 20 may be fixed to the groove bottom 5a of the guide groove 5 by a fastener such as a screw via the fixing pieces on both sides. Further, the fixing piece portions on both sides may be provided with stopper insertion holes so as to penetrate in the vertical direction. Further, in the illustrated example, the fixing piece is provided along the groove bottom 5a of the guide groove 5, but the groove bottom 5a of the guide groove 5 has a concave stepped portion that receives the fixing piece. May be provided. Further, in the illustrated example, an example is shown in which the receiving member 20 is formed by bending a thin plate-like member so as to form a portion that divides the fixed piece portion and the receiving recess 21 on both sides.

Further, in the present embodiment, the first inner wall 23, which is one of the inner walls 23 and 24 that defines both sides of the receiving recess 21 in the direction along the door width direction, corresponds to the outer peripheral surface of the rolling element 17. It has a concave curved surface shape, and the second inner wall 24 as the other inner wall has a vertical surface shape. The first inner wall 23 has an arc shape according to the outer peripheral surface of the rolling element 17 when viewed in the door thickness direction, and is provided so as to be continuous with the bottom wall 22. The second inner wall 24 is provided so as to be substantially orthogonal to the bottom wall 22 facing downward. Further, the receiving member 20 is an upper frame so that the first inner wall 23 faces the door tip side of the second door panel 10A in the closed position and the second inner wall 24 faces the door butt side of the second door panel 10A in the closed position. 3 is provided. That is, the receiving member 20 is directed toward the first vertical frame 6 side where the first inner wall 23 is the side where the door end side end surface of the second door panel 10A faces, and the second inner wall 24 is the door end of the second door panel 10A. The upper frame 3 is provided with the side end faces facing the second vertical frame 7 side which is the opposite side.

As shown in FIGS. 2 and 3, a movement suppressing member 15 having a casing 16 that houses the rolling elements 17 is embedded in the upper end portion 14 of the second door panel 10A. In the present embodiment, the rolling element 17 has a roller shape that is rotatable around the roller shaft 18b along the door thickness direction. The casing 16 is provided with an opening that allows the upper side portion of the rolling element 17 to be retracted and retracted in a substantially vertical direction so as to open upward. Further, the upper end portion 14 of the second door panel 10A is provided with a housing recess 14a that receives the casing 16 so as to open upward on the upper end surface.
Further, inside the casing 16, a holding portion 18 that rotatably holds the rolling element 17 and a biasing member 19 that biases the rolling element 17 toward the upper side are provided. The holding portion 18 has one end rotatably held with respect to the casing 16 around a holding shaft 18a along the door thickness direction, and the other end is biased upward by a biasing member 19. The holding arm is provided with the portion 18c. Further, a roller shaft 18b of the rolling element 17 is provided at an intermediate portion of the holding portion 18. The holding portion 18 may be provided in a pair or in a branch shape on both sides in the axial direction so as to sandwich the rolling element 17 from both sides in the axial direction.

In the illustrated example, the holding portion 18 is provided so as to extend from one end portion on the holding shaft 18a side provided at the door end side portion of the casing 16 toward the door butt side which is an obliquely upper side. Further, the biased portion 18c of the holding portion 18 is biased upward by the biasing member 19, so that the rolling element that is rotatable around the roller shaft 18b in the middle portion of the holding portion 18. 17 is configured to be biased upward. Further, in the illustrated example, the biasing member 19 is a compression coil spring whose extension direction is along the vertical direction for biasing the biased portion 18c of the holding portion 18 to be pushed up. The biasing member 19 is not limited to such a compression coil spring, but may be any other spring member such as a tension coil spring, a torsion spring, or a leaf spring, and other various modifications are possible. Is.

In addition, the casing 16 is provided with an appropriate restraint portion that restrains the rolling element 17 at the upper limit position from moving upward. The upper limit position of the rolling element 17 may be a position where the roller shaft 18b is not exposed to the outside of the casing 16.
Moreover, at least a part of the rolling element 17 is located within the range in the door width direction from the door edge side edge of the pull tabs 11, 11 at the door edge side end of the second door panel 10A to the door edge side edge. It is distributed. In the illustrated example, the rolling element 17 is provided so that a part of the outer peripheral portion on the door tip side is located within the above range, but substantially half of the door tip side is within the above range. It may be provided so as to be located, or may be provided so that substantially the whole thereof is located within the above range.
As shown in FIGS. 3(a) and 3(b), the rolling element 17 is engaged with the receiving recess 21 of the receiving member 20 so as to be fitted therein, and the movement of the second door panel 10A in both door width directions is suppressed. Then, the second door panel 10A is positioned at the closed position. In addition, in the illustrated example, the second door panel 10A moving from the second vertical frame 7 side is shown as an example in which it can be stopped at the closed position, but the second door panel moving from the first vertical frame 6 side. It is also possible to stop 10A in the closed position.

In addition, in the present embodiment, the adjustment mechanism 12a is provided that is capable of adjusting the engagement force of the rolling element 17 with respect to the receiving member 20 in the state where the second door panel 10A is built. In the present embodiment, this adjusting mechanism is the height adjusting portion 12a of the door roller holding portion 12 described above. That is, if the height adjusting portion 12 a is adjusted, the second door panel 10</b>A moves up and down with respect to the door roller 13, whereby the engagement force of the rolling element 17 with respect to the receiving member 20 can be adjusted. That is, as shown in FIG. 4, if the height adjusting portion 12a is adjusted so as to lower the second door panel 10A, the restoring force of the biasing member 19 that biases the rolling element 17 upward decreases. The engagement force of the rolling element 17 with respect to the receiving member 20 decreases. On the other hand, if the height adjusting portion 12a is adjusted so as to raise the second door panel 10A, the restoring force of the biasing member 19 that biases the rolling element 17 upward increases, that is, the energy is further stored. The engaging force of the rolling element 17 with respect to the receiving member 20 increases.

The adjusting mechanism that can adjust the engaging force of the rolling element 17 with respect to the receiving member 20 is not limited to such a height adjusting portion 12a, and various other modifications are possible. For example, the casing 16 that holds the rolling element 17 is provided so as to be exposed at the door end side end surface of the second door panel 10A, and the biasing member 19 that biases the rolling element 17 is attached to the exposed portion. The configuration may be such that an operation unit for adjusting the power is provided.
Further, in the present embodiment, an example in which the rolling element 17 (movement suppressing member 15) and the receiving member 20 that position the second door panel 10A in the closed position is provided, but the other door panels 10 and 10B are in the closed position. It may be configured such that these are further provided as a mechanism for positioning in. Further, it may be configured such that an appropriate catch mechanism or the like for holding each door panel 10, 10A, 10B in the fully open position is further provided.

Since the sliding door device 1 according to the present embodiment is configured as described above, the center side door panel (second door panel) 10A among the three or more door panels 10, 10A, 10B can be easily placed in the closed position. The second door panel 10A can be moved smoothly while being able to be positioned at.
That is, the rolling element 17 rolling on the groove bottom 5a of the guide groove 5 of the upper frame 3 is directed to the upper side on the upper end portion 14 of the second door panel 10A among the three or more door panels 10, 10A, 10B. It is provided so as to project in the state of being biased. Further, the rolling elements 17 are arranged on the upper frame 3 so as to be engaged with each other, and the movement of the second door panel 10A that moves in both directions along the door width direction is suppressed to position the second door panel 10A at the closed position. It is configured to include the receiving member 20. Therefore, the second door panel 10A that moves in both directions along the door width direction can be easily positioned in the closed position, and a gap is formed between the adjacent door panels 10 and 10B in the closed position when viewed in the door thickness direction. Can be suppressed.

Moreover, since the rolling element 17 biased toward the upper side is provided in the upper end portion 14 of the second door panel 10A, the vertical direction of the upper frame 3 is higher than that in the case of being provided in the upper frame 3. It is possible to reduce the thickness dimension (final dimension) along the. In other words, there is no need to make the found size of the upper frame 3 relatively large in order to provide the rolling element 17 that is biased upward and the biasing member 19 that biases the rolling element 17 in an embedded manner. Thus, the upper frame 3 can be made thinner. Further, since the rolling element 17 engaged with the receiving member 20 rolls on the groove bottom 5a of the guide groove 5 of the upper frame 3, when the rolling element 17 moves the second door panel 10A at a position other than the closed position. Resistance of the second door panel 10A can be smoothly moved.
In addition, the rolling element 17 is provided so as to be located at the upper end portion 14 that is substantially directly above the pull tabs 11 provided at one end portion (door end side end portion) in the door width direction of the second door panel 10A. I am trying. Therefore, when moving the second door panel 10A from the closed position by holding the pull tabs 11 and 11 as compared with the one in which the rolling element 17 is provided above the position separated from the pull tabs 11 and 11 in the door width direction. It is possible to suppress the floating and the like on the front side in the moving direction in, and it is possible to smoothly move. Accordingly, the sliding door device 1 including three or more door panels 10, 10A, 10B, which tends to rattle when moved because the door width dimension is particularly small, is suitable.

In addition, in the present embodiment, one of the inner walls 23 and 24 that defines both sides of the receiving recess 21 of the receiving member 20 in the direction along the door width direction has a concave curved surface shape corresponding to the outer peripheral surface of the rolling element 17, The other has a vertical surface. Therefore, when the rolling element 17 is moved toward one inner wall (first inner wall) 23 of the receiving recess 21, the engagement of the rolling element 17 with the receiving member 20 can be relatively smoothly performed. On the other hand, when the rolling element 17 is moved toward the other inner wall (second inner wall) 24 of the receiving recess 21, the movement of the rolling element 17 can be suppressed relatively firmly. Thus, as in the above-described example, if the receiving member 20 is arranged so that the first curved inner wall 23 of the receiving recess 21 faces the door end side of the second door panel 10A in the closed position. The second door panel 10A in the closed position can be smoothly moved to the open side. Further, the second door panel 10A that moves to the closed position can be effectively stopped at the closed position.

Further, in the present embodiment, the adjustment mechanism (height adjusting portion) 12a that can adjust the engaging force of the rolling element 17 with respect to the receiving member 20 in the state where the second door panel 10A is built is provided. .. Therefore, when the engagement force of the rolling element 17 with respect to the receiving member 20 is adjusted, the second door panel 10A is relatively firmly stopped in the closed position, or the second door panel 10A in the closed position is moved. The operating force required for can be reduced. Further, since such adjustment can be performed in a state where the second door panel 10A is installed, the workability at the time of adjustment is improved as compared with the case where the second door panel 10A needs to be removed from the door frame. Can be made. Instead of such an aspect, an adjustment mechanism may be provided in which the adjustment of the engagement force of the rolling element 17 with respect to the receiving member 20 is possible with the second door panel 10A removed from the door frame, Furthermore, it may be configured such that such an adjusting mechanism is not provided.

Next, another embodiment of the present invention will be described with reference to the drawings.
FIG. 5: is a figure which shows typically an example of the sliding door apparatus which concerns on 2nd Embodiment.
The differences from the first embodiment will be mainly described, and the same configurations will be denoted by the same reference numerals, and the description thereof will be omitted or briefly described.

The sliding door device 1A according to this embodiment is mainly different from the first embodiment in the configuration of the receiving member 20A. In the present embodiment, both inner walls 23 and 24A that define both sides of the receiving recess 21A of the receiving member 20A in the direction along the door width direction have a concave curved surface shape corresponding to the outer peripheral surface of the rolling element 17, respectively. That is, in the present embodiment, both the first inner wall 23 and the second inner wall 24A of the receiving recess 21A have an arc shape corresponding to the outer peripheral surface of the rolling element 17 when viewed in the door thickness direction, as viewed in the door thickness direction, It is configured so as to be continuous with the bottom wall 22.
The sliding door device 1A according to the present embodiment configured as described above also has substantially the same effect as that of the first embodiment. Further, since both the inner walls 23, 24A of the receiving recess 21A are concave curved surfaces, when the rolling element 17 is moved toward any of the inner walls 23, 24A in the direction along the door width direction of the receiving recess 21A, The engagement of the rolling element 17 with the receiving member 20A can be released relatively smoothly. Accordingly, the second door panel 10A in the closed position can be relatively smoothly moved when moving to either the open side or the front side in the closing direction.

In addition, in each of the above-described embodiments, the configuration including the three door panels 10, 10A, and 10B is adopted, but the configuration including four or more door panels may be adopted. In this case, rolling elements 17 (movement suppressing members 15) are provided on the upper end portion 14 of the center side door panel 10A other than the door panels 10 and 10B on both outer sides in the door thickness direction, and the rolling elements 17 (movement suppressing members 15) are arranged at appropriate positions on the upper frame 3. The configuration may be such that the receiving member 20 is provided.
In the above example, the hanging wall portion is provided on the upper side of the upper frame 3, but the upper frame 3 may be directly attached to the ceiling or embedded in the ceiling. Good. Alternatively, the vertical frames 6 and 7 on both sides may not be provided, and the frame may have no frame.

Further, as the receiving members 20 and 20A with which the rolling elements 17 provided on the upper end portion 14 of the center side door panel 10A engage, the receiving recesses 21 and 21A as described above are embedded in the groove bottom 5a of the guide groove 5. It is not limited to the one provided in a shape. The receiving members 20 and 20A may be, for example, those having a pair of protrusions protruding from the groove bottom 5a so as to capture the rolling elements 17 on both sides in the door width direction, and other various modifications are possible. Is.
Further, the rolling element 17 provided on the upper end portion 14 of the center side door panel 10A is not limited to the roller (wheel)-shaped one that is rotatable around the roller shaft 18b along the door thickness direction as described above, It may be in the shape of a ball (sphere), and various other modifications are possible.

1,1A Sliding door device 10 First door panel (door panel)
10A 2nd door panel (center side door panel)
10B 3rd door panel (door panel)
11 Puller 12a Height adjustment unit (adjustment mechanism)
13 Door roller 14 Upper end 17 Rolling element 20, 20A Receiving member 21, 21A Receiving recess 23 First inner wall 24, 24A Second inner wall 3 Upper frame 5 Guide groove 5a Groove bottom 8 Lower rail

Claims (4)

Three or more door panels, the upper end of which is guided by a guide groove provided on the upper frame, and the lower end of which is provided with a door roller traveling on the lower rail, and which are arranged in a pulling shape,
A rolling element that is provided at the upper end of the center side door panel of these door panels so as to project in a state of being biased upward and that rolls on the groove bottom of the guide groove,
A receiving member that is arranged on the upper frame so that the rolling elements engage with each other, and that suppresses the movement of the central side door panel that moves in both directions along the door width direction and positions the central side door panel at the closed position; ,,
The said rolling element is provided so that it may be located in the upper end part which is substantially directly above the pulling hand provided in the door width direction one end part of the said center side door panel, The sliding door device characterized by the above-mentioned. In claim 1,
A sliding door device comprising an adjusting mechanism capable of adjusting an engaging force of the rolling element with respect to the receiving member in a state where the central side door panel is built. In claim 1 or 2,
The receiving member is provided with a receiving recess that receives the upper portion of the rolling element so as to open downward, and one of the inner walls that divides the receiving recess into both sides in the direction along the door width direction. A sliding door device having a concave curved surface shape corresponding to the outer peripheral surface of the rolling element and a vertical surface shape on the other side. In claim 1 or 2,
The receiving member is provided with a receiving recess that receives an upper portion of the rolling element so as to open downward, and both inner walls that partition both sides of the receiving recess in a direction along the door width direction are respectively provided. A sliding door device having a concave curved surface shape corresponding to the outer peripheral surface of the moving body.

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