JP7499444B2 - Door opening and closing device - Google Patents

Description

The present invention relates to a door opening and closing device for opening and closing a sliding door panel.

A door opening and closing device that opens and closes a sliding door panel by sliding a guided member connected to the upper end of the sliding door panel in the door width direction is known. Such a door opening and closing device is provided with an electric lock that locks the sliding door panel.
For example, Patent Document 1 listed below discloses an auto-locking device that is attached to a hanger rail and has a lock shaft that protrudes and engages with a locking portion of a key receiving device fixed to a hanging hardware device attached to the top surface of an automatic door.

Patent No. 6214599

However, the auto-locking device described in the above-mentioned Patent Document 1 is configured such that the lock shaft, which moves up and down along the axial direction, is engaged with a locking portion of the key receiving device. Therefore, when an automatic door is manually moved to the open side, a load perpendicular to the axial direction is applied to the lock shaft, which may cause damage.

The present invention has been made in consideration of the above-mentioned situation, and aims to provide a door opening and closing device that can reduce damage, etc.

In order to achieve the above object, the door opening and closing device of the present invention includes an upper rail that guides a first guided member and a second guided member connected to upper ends of both sides in the door width direction of a sliding door panel, and suspends and holds the sliding door panel so that it can slide in the door width direction; a drive mechanism that is connected to the first guided member and slides the first guided member in the door width direction; and a drive mechanism that is disposed so that the sliding door panel is located at a forward end in a movement direction of at least one of the first guided member and the second guided member in an opening direction at a closed position, and releases the movement of the sliding door panel in the closing position to the opening side. and an electric lock that can be removably restrained from moving, the electric lock being elongated and extending generally in the door width direction from a base end that is held so as to be freely rotatable around an axis along the door thickness direction, and comprising a locking portion whose tip end that engages with the lock receiving portion of one of the guided members is moved up and down between an upper release position and a lower locked position, the locking portion being configured to be inclined so as to slope downward toward the tip end in the locked position, and the lock receiving portion of the one of the guided members being in the form of an inclined surface perpendicular to the longitudinal direction of the locking portion in the locked position .
In order to achieve the above object, the door opening and closing device of the present invention comprises an upper rail that guides a first guided member and a second guided member connected to the upper ends of both sides in the door width direction of a sliding door panel, and suspends and holds the sliding door panel so that it can slide freely in the door width direction, a drive mechanism connected to the first guided member and slides the first guided member in the door width direction, and an electric lock that releasably prevents the sliding door panel from moving toward the open side in a closed position, wherein the electric lock is elongated so as to extend generally in the door width direction from a base end that is held so as to be rotatable about an axis along the door thickness direction, and comprises a locking part whose tip engages with a lock receiving portion of at least one of the first guided member and the second guided member and whose tip is moved up and down between an upper release position and a lower lock position, and a connecting member that is moved up and down by a lock driving part to move the tip up and down is connected to the tip of the locking part.

The door opening and closing device of the present invention is configured as described above, which makes it possible to reduce damage, etc.

1 is a partially cutaway schematic perspective view showing an example of a door opening and closing device according to an embodiment of the present invention, with some parts omitted. 3A and 3B are schematic front views, partially cut away, of the door opening and closing device, in which a part of the door opening and closing device is omitted. FIG. 2 is a schematic cross-sectional side view, partially broken away, of the door opening and closing device. 1A and 1B are schematic exploded perspective views of the door opening and closing device with a portion thereof omitted. 3A and 3B are schematic front views, partially cut away, of the door opening and closing device, in which a part of the door opening and closing device is omitted.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In some drawings, some of the detailed reference numerals used in other drawings are omitted.
In the following embodiment, directions such as up and down directions will be described based on the state in which the door opening and closing device according to this embodiment is installed.

1 to 5 are diagrams that diagrammatically show an example of a door opening and closing device according to the present embodiment.
As shown in Fig. 1 and Fig. 2(a) and (b), the door opening and closing device 1 according to the present embodiment includes an upper rail 10 that guides guided members 15, 15 connected to the upper end portions 9a on both sides of the sliding door panel 9 in the door width direction, and suspends and holds the sliding door panel 9 so as to be slidable in the door width direction. The door opening and closing device 1 also includes a drive mechanism 20 that is connected to a first guided member 15A on one side of the guided members 15, 15, and slides the first guided member 15A in the door width direction. With this configuration, when the drive mechanism 20 is driven, the first guided member 15A is moved in the door width direction, and the sliding door panel 9 can be opened and closed (opened and closed). In other words, the sliding door panel 9 can function as an automatic door. The door opening and closing device 1 also includes an electric lock 30 that releasably inhibits the movement of the sliding door panel 9 in the closed position toward the open side. With this configuration, when the electric lock 30 is in a locked state, the sliding door panel 9 can be prevented from moving toward the open side, and when the electric lock 30 is in an unlocked state, the sliding door panel 9 can be permitted to move toward the open side.

2(a), the door opening and closing device 1 includes an upper frame 3 as a fixing object to which the upper rail 10 is fixed. This door opening and closing device 1 may be a sliding door device constituted by a door frame 2 including the upper frame 3 and a sliding door panel 9. The door opening and closing device 1 may be installed in a variety of locations, including a general residence such as a detached house or an apartment building, public facilities such as accommodation facilities, medical facilities, welfare facilities, commercial facilities such as offices, and various stores.
In this embodiment, an example is shown in which one sliding door panel 9 is installed in a single sliding manner. In the example shown in the figure, the sliding door panel 9 is installed in a sleeve wall manner, but it can be installed in any appropriate manner such as in a door pocket or offset.

The door frame 2 is installed in an opening in a wall of a building. The door frame 2 includes an upper frame 3 (upper rail 10) that defines the upper side of the entrance 8 that is opened and closed by the sliding door panel 9, a door end side vertical frame 5 arranged on the door end side of the sliding door panel 9, a door end side vertical frame 6 arranged on the door end side of the sliding door panel 9, and a middle mullion (middle vertical frame) 7. The middle mullion 7 is arranged along the end of the entrance 8 side of the sleeve wall (not shown), and defines both sides of the opening width of the entrance 8 together with the door end side vertical frame 5. The upper frame 3 may be attached or embedded in the ceiling, or may be provided along the lower end of the hanging wall. The lower side of the entrance 8 may be defined by a floor or an appropriate lower frame.

The upper frame 3 is elongated in the door width direction. The length of the upper frame 3 is approximately twice the door width of the sliding door panel 9. As shown in Fig. 3, the upper frame 3 is arranged so that its thickness direction is the up-down direction. The upper frame 3 has a projected dimension (dimension along the door thickness direction) of the sleeve wall side portion arranged on the sleeve wall side smaller than the projected dimension of the entranceway 8 side portion arranged on the entranceway 8 side.
The upper frame 3 is also provided with a receiving groove 4 for receiving an upper portion of the drive mechanism 20, which will be described later. With this configuration, it is possible to easily align the upper rail 10 on which the drive mechanism 20 is provided. The receiving groove 4 is provided so as to open downward and extend over the entire length of the upper frame 3. The upper frame 3 may be fixed to an appropriate upper frame base such as a lintel by fasteners such as screws or nails.

The leading edge vertical frame 5, trailing edge vertical frame 6, and middle mullion 7 are elongated in the door height direction (vertical direction). The length dimension of the leading edge vertical frame 5, trailing edge vertical frame 6, and middle mullion 7 is approximately the same as the door height dimension of the sliding door panel 9 plus the vertical dimension of the upper rail 10 including the drive mechanism 20 and the upper frame 3. The leading edge vertical frame 5, trailing edge vertical frame 6, and middle mullion 7 are arranged so that their thickness direction is the door width direction. The projected dimension of the trailing edge vertical frame 6 and middle mullion 7 is smaller than the projected dimension of the leading edge vertical frame 5.
The leading edge vertical frame 5 and trailing edge vertical frame 6 may be fixed to an appropriate vertical frame base such as a pillar with fasteners. The leading edge vertical frame 5 and trailing edge vertical frame 6 and the upper frame 3 may be fixed to the vertical frame base and the upper frame base in a state of being assembled in a three-sided frame shape. In the illustrated example, the leading edge vertical frame 5 and trailing edge vertical frame 6 are butted against the longitudinal end faces of the upper frame 3, and the leading edge vertical frame 5 and trailing edge vertical frame 6 are assembled to the upper frame 3 in a vertically aligned manner.

In addition, the facing surfaces of the leading edge vertical frame 5 and trailing edge vertical frame 6 may be provided with a door groove to accommodate the ends (leading edge end and trailing edge end) of the sliding door panel 9 in the door width direction.
The upper end of the middle mullion 7 may be fixed to the upper frame 3, and the lower end may be fixed to the floor. The end of the middle mullion 7 on the sliding door panel 9 side may be provided with a gap shielding member such as mohair that rubs against one side of the sliding door panel 9 in the thickness direction. The door frame 2 is not limited to the above-mentioned configuration, and may have various other configurations.

The sliding door panel 9 is a generally rectangular flat plate that is long in one direction (vertical direction). The door height dimension (length dimension) of the sliding door panel 9 may be a standard door height dimension, for example, about 1800 mm to 2100 mm, as long as it corresponds to the opening height of the entrance 8 opened and closed by the sliding door panel 9. The sliding door panel 9 may also be a high door whose door height dimension is approximately the same as the ceiling height, for example, about 2300 mm to 3000 mm. The door thickness dimension of the sliding door panel 9 may be about 20 mm to 40 mm. The door width dimension of the sliding door panel 9 may be, for example, about 500 mm to 1800 mm. When installed indoors, the sliding door panel 9 may be a relatively lightweight panel such as a so-called flash panel, which is configured by attaching a surface material to a panel core material including a frame-shaped core material formed from a wood-based material or a metal-based material that is used as a general indoor sliding door. This sliding door panel 9 is not limited to such a flush panel, but may be of an appropriate configuration depending on the installation location, etc.

A first guided member 15A constituting the guided member 15 is connected to the upper end 9a of the door front side, which is one side of the door width direction of the sliding door panel 9, and a second guided member 15B constituting the guided member 15 is connected to the upper end 9a of the door rear side, which is the other side of the door width direction. These first guided member 15A and second guided member 15B are generally configured similarly to each other. These first guided member 15A and second guided member 15B are provided with attachment parts 16 that are attached to the attachment part of the sliding door panel 9, as shown in FIG. 3. The attachment parts of the sliding door panel 9 are provided at the upper end 9a on both sides of the door width direction of the sliding door panel 9 so as to open toward the outside and upward in the door width direction, and are recessed cup parts into which the attachment parts 16 are fitted.

The first guided member 15A and the second guided member 15B are provided with a support shaft 16a that protrudes upward from the mounting portion 16, and a guide body 17 fixed to the upper end of the support shaft 16a. The guide body 17 is provided with a rolling body 18 that runs on the guide piece portion 13a of the upper rail 10 described later. In this embodiment, the rolling body 18 is rotatable around an axis along the door thickness direction. The guide body 17 is also configured to have rolling bodies 18, 18 on both sides of the door thickness direction spaced apart from each other in the door thickness direction. The rolling bodies 18, 18 on both sides of the door thickness direction are also configured to be provided at multiple locations (two locations in the illustrated example) at intervals in the door width direction of the guide body 17 (see FIG. 5).

Further, the first guided member 15A, which is one of both sides in the door width direction, is connected to a drive mechanism 20, the details of which will be described later. In other words, this first guided member 15A is slid in the door width direction by the drive mechanism 20, and the second guided member 15B on the other side, which is not connected to the drive mechanism 20, is, so to speak, slid in the door width direction in a follower manner.
In addition, the first guided member 15A and the second guided member 15B are not limited to the configuration described above, but may be configured appropriately depending on the upper rail 10 described below.
Furthermore, the lower end of the sliding door panel 9 may be provided with a guide groove or the like into which a lower end guide member such as a guide pin provided on the floor side is inserted.

As shown in Fig. 2(b), the upper rail 10 is approximately twice as long as the sliding door panel 9. The drive mechanism 20 may be fixed to a first half of the upper rail 10 on one side in the longitudinal direction. The length of the upper rail 10 is smaller than twice the door width. The length of the upper rail 10 may be appropriately determined depending on the overlap dimension between the tail end of the sliding door panel 9 and the middle mullion 7 (sleeve wall) in the closed state, the remaining dimension of the sliding door panel 9 in the fully open state, etc.
3, the upper rail 10 is provided with a guide groove 11 that opens downward and receives the guided member 15 (first guided member 15A and second guided member 15B). The guide groove 11 is provided to extend over the entire length of the upper rail 10. A guide body 17 of the guided member 15 is inserted into the guide groove 11 and is guided.

This upper rail 10 comprises a groove bottom plate-like portion 12 that defines the bottom of the guide groove 11, side plate-like portions 13, 13 on both sides that define both sides of the guide groove 11 in the groove width direction, and guide piece portions 13a, 13a extending from the lower ends of these side plate-like portions 13, 13 in directions facing each other.
The extending ends of the guide pieces 13a, 13a on both sides are provided with ridges that protrude upward and extend over the entire length of the upper rail 10. Annular grooves provided on the outer circumferential surfaces of the rolling elements 18, 18 of the guided member 15 engage with the ridges of the guide pieces 13a, 13a, and the rolling elements 18, 18 run along the ridges of the guide pieces 13a, 13a.

The upper rail 10 is provided with fixing members 14 that fix the upper rail 10 to the upper frame 3. In the illustrated example, a plurality of fixing members 14 are provided at intervals in the longitudinal direction on the groove bottom plate portion 12 of the upper rail 10. The plurality of fixing members 14 are provided in an empty space in which the components of the drive mechanism 20 provided on the upper rail 10 and the electric lock 30 are not provided. The fixing members 14 may be hooked and held by hook portions provided on the upper frame 3. The fixing members 14 may also be fixed to the upper frame 3 by fasteners such as screws.

1, the drive mechanism 20 is fixed to the upper rail 10. With this configuration, with the drive mechanism 20 integrated with the upper rail 10, the upper rail 10 can be fixed to a fixing target such as the upper frame 3 of the door frame 2 to which the sliding door panel 9 is attached.
In this embodiment, the drive mechanism 20 includes a first driven rotating wheel 22 constituting a first rotating wheel and a second driven rotating wheel 24 constituting a second rotating wheel, which are provided at positions spaced apart in the door width direction (see FIG. 2). The drive mechanism 20 also includes a string-like power transmission body 28 wound around each of the first driven rotating wheel 22 and the second driven rotating wheel 24 and connected to the first guided member 15A, and a drive unit 25 that transmits drive to the string-like power transmission body 28. With this configuration, when the drive unit 25 is driven, the first guided member 15A connected to the string-like power transmission body 28 is moved in the door width direction, and the sliding door panel 9 can be opened or closed.

The drive unit 25 is provided between the first driven rotating wheel 22 and the second driven rotating wheel 24 and above the guide groove 11 of the upper rail 10, and includes a drive rotating wheel 26 that transmits drive to the string-like transmission body 28, and a motor 27 that rotates the drive rotating wheel 26. With this configuration, when the drive rotating wheel 26 is rotated by the motor 27, the first guided member 15A connected to the string-like transmission body 28 is moved in the door width direction, and the sliding door panel 9 can be opened and closed. In addition, compared to a case in which the drive rotating wheel 26 and the motor 27 are provided at one end of the door width direction, the dimensions along the door width direction can be made more compact. In addition, compared to a case in which the drive rotating wheel 26 is provided on one side of the upper rail 10 in the door thickness direction, the dimensions along the door thickness direction can be made more compact. As a result, it is possible to install it on a door frame 2 that is the same size as the door frame of a sliding door device installed in a general building such as a residence. In addition, for example, it can be installed on an existing door frame 2, and can be applied not only to new construction but also to reconstruction and remodeling. This allows it to be suitably used as a door opening and closing device 1 for opening and closing a sliding door panel 9 installed indoors in general housing such as existing detached houses and apartment buildings, public facilities such as accommodation facilities, medical facilities, and welfare facilities, commercial facilities such as offices, various stores, etc. In addition, since the door opening and closing device 1 is compact, it is possible to make the sliding door panel 9 function as an automatic door, but even if it is installed as an indoor sliding door, it is possible to reduce the strange appearance (noise), and it can be suitably used for indoor use.

The first driven axle and the second driven axle of the first driven rotating wheel 22 and the second driven rotating wheel 24 are parallel to each other. Moreover, the first driven axle and the second driven axle are arranged to intersect with the axial direction of the drive axle of the drive rotating wheel 26, which is arranged so that the axial direction is in the door height direction.
A cord-like power transmission body 28 is wound around the first driven rotating wheel 22 and the second driven rotating wheel 24 in a parallel manner. The first driven rotating wheel 22 and the second driven rotating wheel 24 have a first driven axle and a second driven axle that are inclined so that the lower displacement portion and the upper displacement portion of the cord-like power transmission body 28, which are displaced to opposite sides in the door width direction, are at different positions in the door thickness direction of the upper rail 10 (see FIG. 3). The first driven rotating wheel 22 and the second driven rotating wheel 24 have a first driven axle and a second driven axle that are inclined so that the lower displacement portion is located approximately in the center in the door thickness direction of the upper rail 10 and the upper displacement portion is positioned to one side in the door thickness direction of the upper rail 10.

The first driven rotating wheel 22 and the second driven rotating wheel 24 are of the same size and shape. The first driven rotating wheel 22 and the second driven rotating wheel 24 are of a thin disk shape with a relatively small dimension along the axial direction of the first driven axle and the second driven axle. The first driven rotating wheel 22 and the second driven rotating wheel 24 are of a pulley shape with an annular groove on their outer circumferential surface, into which the string-like transmission body 28, which is a rope-like member, engages. The first driven rotating wheel 22 and the second driven rotating wheel 24 are arranged so that they are in the same position as each other when viewed in the door width direction. The first driven axle and the second driven axle of the first driven rotating wheel 22 and the second driven rotating wheel 24 are arranged so as to be perpendicular to the longitudinal direction of the upper rail 10 and inclined with respect to the horizontal plane (the upper surface of the groove bottom plate-like portion 12).

The first driven rotating wheel 22 and the second driven rotating wheel 24 are fixed to the upper rail 10 by fixing members 21, 23. At least one of the first driven rotating wheel 22 and the second driven rotating wheel 24 may be held by one or both of the fixing members 21, 23 so that the position of the first driven rotating wheel 22 and the second driven rotating wheel 24 can be adjusted in the door width direction.
Furthermore, the first driven rotating wheel 22 and the second driven rotating wheel 24 and the fixing members 21, 23 that fix them to the upper rail 10 are not limited to the configuration described above, and may have various other configurations.
3, the guide bodies 17, 17 of the first guided member 15A and the second guided member 15B are provided with recesses that open upward and on both sides in the door width direction so as to receive the lower end portions of the first driven rotating wheel 22 and the second driven rotating wheel 24 when viewed in the door width direction. The guide body 17 of the first guided member 15A is provided with a connecting portion 17a to which the lower displacement portion of the string-like transmission body 28 is connected. This connecting portion 17a is provided so as to be located within the recess of the guide body 17.

The string-like transmission body 28 is arranged so that the upper displacement part displaced on the upper side of the groove bottom peripheral surface of the annular groove of the first driven rotating wheel 22 and the second driven rotating wheel 24 is positioned to one side in the door thickness direction in the upper space of the guide groove 11. Also, the string-like transmission body 28 is arranged so that the lower displacement part displaced on the lower side of the groove bottom peripheral surface of the annular groove of the first driven rotating wheel 22 and the second driven rotating wheel 24 is located in the center of the groove width direction of the lower space in the guide groove 11. This string-like transmission body 28 may be one in which the connecting part 17a of the first guided member 15A is fixed to a part formed in a ring shape, or it may be one in which both longitudinal side ends are connected to both sides of the connecting part 17a in the door width direction to form a substantially ring shape. Also, this string-like transmission body 28 may be any one that is difficult to stretch, and may be, for example, a metal wire, a twisted cord made by twisting appropriate fibers together, a braided cord made by combining fibers, etc.

The driving rotary wheel 26 is a thin disk having a relatively small dimension along the axial direction of the driving axle. The driving rotary wheel 26 is a pulley having an annular groove on its outer circumferential surface with which the cord-like power transmission body 28 engages. The upper displacement portion of the cord-like power transmission body 28 is wound around the driving rotary wheel 26 for approximately one revolution.
The driving rotary wheel 26 is provided with a gear (rotary wheel side gear) that transmits rotation to a gear (motor side gear) provided on a motor 27 that rotates the driving rotary wheel 26. The motor 27 is arranged on one side of the driving rotary wheel 26 in the door width direction so that the axial direction of the output shaft is in the door width direction, and the drive axle of the driving rotary wheel 26 and the output shaft of the motor 27 are arranged to intersect with each other. The rotary wheel side gear and the motor side gear may be appropriately configured depending on the arrangement of the driving rotary wheel 26 and the motor 27. The rotary wheel side gear and the motor side gear are not limited to those configured to directly mesh with each other, and may be configured to transmit rotation via an appropriate intermediate gear or the like.

In addition, the driving rotary wheel 26 and the motor 27 may be fixed to the upper rail 10 by an appropriate fixing member.
The motor 27 may be a servo motor or the like that can rotate in both directions and whose rotation speed can be controlled.
In the above example, the drive axle of the drive rotating wheel 26 is provided in the door height direction, but it may be configured to be provided in the door thickness direction.
1, a control block 29 for controlling the rotation of the motor 27 is provided on one side of the motor 27 in the door width direction. This control block 29 includes a power supply unit for supplying drive power to the motor 27, a control circuit connected to the motor 27 via appropriate signal lines, etc. The control block 29 controls the motor 27 to rotate forward or reverse, and the sliding door panel 9 is moved to the fully open or closed position. In the illustrated example, the control block 29 is shaped like a substantially rectangular prism that is elongated in the door width direction.

As shown in FIG. 5, the electric lock 30 is provided with a locking section 40 that is elongated so as to extend generally in the door width direction from a base end 41 that is held rotatably around an axis (locking axis) 42 along the door thickness direction. The locking section 40 is configured such that a tip end 43 that engages with the lock receiving portion 19 of the first guided member 15A as at least one of the first guided member 15A and the second guided member 15B is moved up and down to an upper release position and a lower lock position. With this configuration, damage to the drive mechanism 20 can be suppressed, for example, compared to a locking mechanism that inhibits the rotation of a pulley or the like that constitutes the drive mechanism 20. Also, damage to the locking section 40 can be suppressed, for example, compared to a locking mechanism that has a lock shaft that moves up and down in the axial direction. In other words, the load applied to the locking section 40 in the locked position when the sliding door panel 9 is manually moved to the open side can be received in the generally longitudinal direction of the locking section 40.

In this embodiment, the electric lock 30 is fixed to the upper rail 10 so that it is located above the center of the first guided member 15A in the door width direction when the sliding door panel 9 is in the closed position. With this configuration, the dimensions along the door width direction can be made more compact than when a space is required to be placed above the outer side of the first guided member 15A in the door width direction as one of the guided members of the sliding door panel 9 in the closed position. In addition, since the electric lock 30 is fixed and integrated with the upper rail 10, construction can be improved compared to when an electric lock needs to be installed separately from the upper rail 10. In addition, since the electric lock 30 is located above the entrance 8, maintenance and operability during manual unlocking can be improved compared to when the electric lock is installed on the sleeve wall side or door pocket side.

Moreover, the electric lock 30 is provided so as to be located between the first driven rotating wheel 22 and the second driven rotating wheel 24. With this configuration, the electric lock 30 can be provided by utilizing the empty space between the first driven rotating wheel 22 and the second driven rotating wheel 24 that constitute the drive mechanism 20, and the dimensions along the vertical direction of the upper rail 10 can be made compact.
In addition, the electric lock 30 is provided to be located above the center of the door width direction of the first guided member 15A when the sliding door panel 9 is in the closed position so that the first guided member 15A on the door end side as one of the guided members can be prevented from moving toward the open side. For example, when the electric lock 30 is provided adjacent to the second guided member 15B of the sliding door panel 9 in the closed position, if the door width dimension of the sliding door panel 9 is different, it is necessary to change the installation position of the electric lock 30, but this is not necessary. In other words, even if the door width dimension of the sliding door panel 9 is different, it can be accommodated without changing the installation position of the electric lock 30 relative to the upper rail 10.

In addition, the electric lock 30 is provided so as to be located at the leading end of the movement direction in the opening direction of the first guided member 15A as one of the guided members when the sliding door panel 9 is in the closed position. With this configuration, the structure of the locking part 40 and the lock receiving part 19 can be simplified compared to when the electric lock 30 is provided at the leading end of the movement direction in the closing direction of the first guided member 15A as one of the guided members of the sliding door panel 9 in the closed position. In other words, there is no need to provide a hooked part on the lock receiving part 19 and a hook-shaped hooking part on the locking part 40 that can be hooked on the hooked part, and the lock receiving part 19 can be used as the abutting part against which the tip part 43 of the locking part 40 abuts.
In other words, in this embodiment, the electric lock 30 is arranged to be located at the end of the movement direction in the opening direction, which is the center of the door width direction of the first guided member 15A, which is the door end side when the sliding door panel 9 is in the closed position.

Specifically, the electric lock 30 holds the lock section 40 rotatably around a lock shaft 42 and has a first case section 31 and a second case section 32 that are divided in the door thickness direction and constitute a lock case fixed to the upper rail 10. The electric lock 30 also has a motor 33 that constitutes a lock drive section that moves a tip section 43 of the lock section 40 up and down, and lock/unlock detection sections 36, 37 that detect the locked and unlocked states of the electric lock 30.
The first case part 31 and the second case part 32 are configured to open downward when assembled. In the illustrated example, the first case part 31 on one side in the door thickness direction is shaped to open toward the other side in the door thickness direction and downward, and the second case part 32 on the other side in the door thickness direction is shaped like a plate arranged to cover the opening of the first case part 31 on the other side in the door thickness direction.

The first case part 31 and the second case part 32 are fixed to the upper rail 10 by fasteners such as screws. In the illustrated example, an opening for receiving the electric lock 30 is provided in the groove bottom plate part 12 and the side plate part 13 on one side in the door thickness direction of the upper rail 10 in the form of a notch, and a fixed part provided on the first case part 31 is fixed to the side plate part 13 on one side in the door thickness direction (see also FIG. 1 ).
The locking portion 40 is arranged so that the base end 41 on one side in the longitudinal direction is located closer to the center in the door width direction (door tail side) of the sliding door panel 9 in the closed position than the tip end 43 on the other side in the longitudinal direction. In this embodiment, the locking portion 40 is arranged in an inclined manner that slopes downward toward the tip end side in the locked position, as shown in Fig. 5(a). Also, the locking portion 40 is arranged so that the base end 41 and the tip end 43 are at approximately the same height in the unlocked position, that is, the longitudinal direction is approximately the door width direction, as shown in Fig. 5(b).

The lock shaft 42 at the base end 41 of the lock section 40 is disposed so that its axial direction is in the door thickness direction. The lock shaft 42 may be fixedly provided to the lock section 40 and rotatably held by bearings provided to the first case section 31 and the second case section 32. Alternatively, a configuration may be adopted in which a bearing is provided on the lock section 40 side to rotatably hold the lock shaft 42 fixedly provided on the first case section 31 and the second case section 32 side.
A connecting member 38 is connected to the tip 43 of the locking part 40, which is connected to the rotating body 35 rotated by the motor 33 and moves the tip 43 up and down with the rotation of the rotating body 35. The rotating body 35 is arranged to be located above the tip side of the locking part 40. The rotating body 35 is held by the first case part 31 and the second case part 32 so as to be rotatable around a rotating shaft 35a arranged so that the axial direction is in the door thickness direction. In the illustrated example, the rotating body 35 is a worm wheel that meshes with a worm 34 provided on the output shaft of the motor 33. Note that the manner in which the rotating body 35 is rotated by the motor 33 is not limited to such a manner using a worm pair, and may be a manner in which another gear is provided, or the rotating body 35 is provided directly on the output shaft of the motor 33.

The connecting member 38 is elongated in the vertical direction. The upper end of the connecting member 38, which is one end in the longitudinal direction, is rotatably connected to one radial side of the rotating shaft 35a, which is eccentric to the rotating shaft 35a of the rotating body 35, and the lower end, which is the other end in the longitudinal direction, is rotatably connected to the tip 43 of the locking part 40. The connecting member 38 has an insertion hole 38a along the door thickness direction through which the upper end connecting shaft 35b, which is rotatably inserted and held in the shaft insertion hole provided in the rotating body 35, is inserted. In addition, the lower end of the connecting member 38 has a lower end connecting shaft 38b rotatably inserted and held in an insertion hole along the door thickness direction provided in the tip 43 of the locking part 40 (see also FIG. 4(b)).

When the motor 33 is driven, the worm 34 rotates the rotating body 35 around the rotating shaft 35a, and the upper end connecting shaft 35b rotates around the rotating shaft 35a, and the connecting member 38 moves up and down while the upper end swings roughly in the door width direction. This causes the tip 43 of the locking part 40 to move up and down. In other words, as shown in FIG. 5(a), if the upper end connecting shaft 35b is positioned below the rotating shaft 35a of the rotating body 35, the connecting member 38 and the tip 43 of the locking part 40 will be in the lower limit position, and the locking part 40 will be in the locked position. In this state, the tip 43 of the locking part 40 is positioned so as to face the lock receiving part 19 of the first guided member 15A of the sliding door panel 9 in the closed position, and the movement of the first guided member 15A to the open side is suppressed. 5(b), when the upper end connecting shaft 35b is positioned above the rotating shaft 35a of the rotating body 35, the connecting member 38 and the tip 43 of the locking part 40 are in the upper limit position, and the locking part 40 is in the released position. In this state, the locking part 40 is in a position where it does not interfere with the first guided member 15A of the sliding door panel 9 in the closed position, and the first guided member 15A can move to the open side. Note that the mechanism for moving the tip 43 of the locking part 40 up and down is not limited to the configuration shown in the figure, and various other configurations may be used.

The lock receiving portion 19 with which the tip portion 43 of the locking portion 40 engages is provided so as to be located between the rolling bodies 18, 18 on both sides in the door thickness direction when viewed in the door width direction, as shown in Fig. 3. With this configuration, damage to the rolling body 18 can be suppressed compared to a case where the rolling body 18 is used as the lock receiving portion 19. Also, compared to a case where the first guided member 15A has the rolling body 18 provided only on one side in the door thickness direction and the lock receiving portion 19 is provided on the other side in the door thickness direction, the tip portion 43 of the locking portion 40 can be engaged more stably.
In this embodiment, as shown in Fig. 5(a), the lock receiving portion 19 is formed into an inclined surface perpendicular to the longitudinal direction of the lock portion 40 in the locked position. With this configuration, the load applied to the lock portion 40 in the locked position when the sliding door panel 9 is manually moved to the open side can be more effectively received along the longitudinal direction of the lock portion 40. Also, interference between the tip portion 43 of the lock portion 40 and the lock receiving portion 19 can be suppressed when the lock portion 40 is displaced to the unlocked position.

The lock receiving portion 19 is provided at the trailing end of the guide body 17 of the first guided member 15A. The lock receiving portion 19 may be provided integrally with the guide body 17, or may be provided as a separate member fixed thereto. The lock receiving portion 19 is provided so as not to interfere with the string-like power transmission body 28 connected to the first guided member 15A.
The lock receiving portion 19 has an inclined surface facing the end of the door with which the tip 43 of the locking portion 40 abuts or approaches, and is inclined obliquely upward. The tip surface of the tip 43 of the locking portion 40 is inclined obliquely downward and generally parallel to the lock receiving portion 19 so that it is arranged to face the lock receiving portion 19 in the locked position. In the illustrated example, the tip surface of the tip 43 is in an arc shape when viewed in the door thickness direction. The tip 43 of the locking portion 40 may be appropriately shaped so that it is arranged to face the lock receiving portion 19 of the first guided member 15A in the locked position and can prevent the first guided member 15A from moving toward the open side.

The inclination angle of the lock receiving portion 19 is set to an appropriate angle according to the inclination angle of the lock portion 40 so as to be perpendicular to the longitudinal direction of the lock portion 40 in the locked position.
The inclination angle of the locking portion 40 in the locked position may be an appropriate angle from the viewpoint of suppressing interference with the lock receiving portion 19 in the unlocked position and from the viewpoint of reducing the load applied to the locking portion 40 in the locked position. The inclination angle of the locking portion 40 in the locked position with respect to the horizontal plane may be about 5 degrees to 30 degrees, and an example of about 20 degrees is shown in the figure. In other words, the locking portion 40 extending generally in the door width direction also includes an inclination angle of about 30 degrees with respect to the horizontal plane. Also, the example shows an example in which the inclination angle of the lock receiving portion 19 with respect to the horizontal plane is about 70 degrees corresponding to the inclination angle of the locking portion 40 in the locked position. Note that the expression "the longitudinal direction of the locking portion 40 in the locked position and the lock receiving portion 19 are perpendicular" may include an angle of about 85 degrees to 95 degrees between the longitudinal direction of the locking portion 40 in the locked position and the lock receiving portion 19 when viewed in the door thickness direction, in addition to an angle of 90 degrees between the longitudinal direction of the locking portion 40 in the locked position and the lock receiving portion 19.

In this embodiment, the locking portion 40 in the locked position can be manually operated to the unlocked position. With this configuration, even if the motor 33 does not operate due to a power outage or a malfunction, the locking portion 40 in the locked position can be manually displaced to the unlocked position. Also, for example, when closing the sliding door panel 9 located on the open side, even if the locking portion 40 is in the locked position, the guide body 17 of the first guided member 15A can be used to move the locking portion 40 to the unlocked side so as to push it up, thereby closing the sliding door panel 9.
In the illustrated example, the insertion hole 38a of the connecting member 38 is an elongated hole that is long in the longitudinal direction (vertical direction) of the connecting member 38, and is configured to allow the tip 43 of the locking portion 40 in the locked position to move upward. In other words, the connecting member 38 and the tip 43 of the locking portion 40 are configured to be able to move upward along the insertion hole 38a with respect to the upper end connecting shaft 35b of the rotating body 35 in the locked position.

Also, an example is shown in which an operation recess 44 serving as a manual operation part is provided at the tip 43 of the lock part 40. This operation recess 44 may be provided by penetrating the tip 43 of the lock part 40 in the door thickness direction. Also, this operation recess 44 may be operated by inserting a jig such as a screwdriver. Also, as shown in FIG. 1, a cutout is formed in the side plate part 13 of the upper rail 10 to expose the tip 43 of the lock part 40 so that the operation recess 44 can be operated. Note that a configuration may be provided in which a cutout is provided to expose the tip 43 of the lock part 40 on both side plate parts 13, 13 of the upper rail 10 in the door thickness direction so that the lock part 40 can be manually released from both sides in the door thickness direction. Note that the manual operation part is not limited to the operation recess 44 as shown in the example, and may be various other configurations. Also, a configuration may be provided in which an appropriate holding mechanism is provided to hold the lock part 40 in the release position by manual operation.

In addition, in this embodiment, a biasing member 39 is provided to bias the locking portion 40 toward the locking position. With this configuration, the locking portion 40 that has been manually set to the unlocked position can be returned to the locked position. In the illustrated example, the biasing member 39 is a torsion coil spring with a lock shaft 42 inserted through the coil. One arm end 39a of the biasing member 39 is abutted against the restricting wall portion 31a provided in the first case portion 31, and the other arm end 39b of the biasing member 39 is abutted against the upper surface of the locking portion 40. With this configuration, the biasing member 39 is configured to bias the tip portion 43 of the locking portion 40 so as to press it downward. Note that the biasing member 39 is not limited to a torsion coil spring, but may be other spring members such as a leaf spring, a compression coil spring, or a tension coil spring, and may also be a rubber material or the like, without being limited to a spring member. Furthermore, the manner in which the lock portion 40 can be manually operated to the release side is not limited to the manner described above, and various other configurations may be used.

In this embodiment, the locking/unlocking detection units 36, 37 are configured to have a locking detection unit 36 that detects the locked state and an unlocking detection unit 37 that detects the unlocked state, which are separately provided (see FIG. 4B). Also, an example is shown in which the locking detection unit 36 and the unlocking detection unit 37 are microswitches having push buttons (actuator units) 36a, 37a that are pushed down by push parts 35c, 35d provided on the rotating body 35. In the example shown in the figure, an example is shown in which the locking detection unit 36 and the unlocking detection unit 37 are provided with levers 36b, 37b that push down the push buttons 36a, 37a.
The locking detection unit 36 and the unlocking detection unit 37 are provided at intervals in the door thickness direction so that they are aligned with each other when viewed in the door thickness direction. In the illustrated example, the locking detection unit 36 and the unlocking detection unit 37 are provided on one side of the rotating body 35 in the door width direction, between the motor 33 and the lock unit 40. The locking detection unit 36 and the unlocking detection unit 37 may be held by being sandwiched between the first case part 31 and the second case part 32 on both sides in the door thickness direction via an appropriate fixing member.

The lock detection unit 36 is provided so as to be located on one side of the rotating body 35 in the door thickness direction. As shown in Fig. 4(a), a push-down part 35c that pushes down the push button 36a via the lever 36b of the lock detection unit 36 is provided on one side of the rotating body 35 in the door thickness direction so as to protrude toward one side in the door thickness direction. As shown in Fig. 5(a), the push-down part 35c is provided so as to push down the push button 36a of the lock detection unit 36 when the lock unit 40 is in the locked position. In other words, the push-down part 35c is provided at a position where it pushes down the push button 36a of the lock detection unit 36 when the upper end connecting shaft 35b of the rotating body 35 is located below the rotation shaft 35a.
The unlocking detection unit 37 is provided so as to be located on the other side of the rotating body 35 in the door thickness direction. A push-down part 35d that pushes down the push button 37a via the lever 37b of the unlocking detection unit 37 is provided on the other side of the rotating body 35 in the door thickness direction so as to protrude toward the other side in the door thickness direction. As shown in Fig. 5(b), this push-down part 35d is provided so as to push down the push button 37a of the unlocking detection unit 37 when the lock unit 40 is in the release position. In other words, the push-down part 35d is provided at a position where it pushes down the push button 37a of the unlocking detection unit 37 when the upper end connecting shaft 35b of the rotating body 35 is located above the rotation shaft 35a.

The push-down portion 35d for pushing down the push button 37a of the unlocking detection portion 37 and the push-down portion 35c for pushing down the push button 36a of the locking detection portion 36 are provided in positions facing each other across the rotation shaft 35a of the rotating body 35 when viewed in the door thickness direction. The push-down portions 35c and 35d are provided to extend in the circumferential direction with a circumferential gap between them. The dimensions of the push-down portions 35c and 35d in the circumferential direction may be set to an appropriate dimension so that the locked and unlocked states can be detected. In the illustrated example, the dimension of the push-down portion 35d for pushing down the push button 37a of the unlocking detection portion 37 in the circumferential direction is larger than the dimension of the push-down portion 35c for pushing down the push button 36a of the locking detection portion 36 in the circumferential direction.
The locking/unlocking detection unit 36 and the unlocking detection unit 37 and the motor 33 may be connected to the control block 29 via a signal line or the like. The electric lock 30 may be locked and unlocked by a control signal (locking signal and unlocking signal) from the control block 29 or a wireless signal (locking signal and unlocking signal) from a remote location. The locking/unlocking detection units 36 and 37 are not limited to the microswitches described above, and may be configured to detect locking and unlocking by detecting the rotation angle of the rotating body 35, or may be configured in various other ways.

3, the door opening and closing device 1 may be provided with covers 45, 45 arranged on both sides of the upper rail 10 in the door thickness direction so as to cover the space between the upper frame 3 and the upper rail 10. These covers 45, 45 may be fixed to the upper rail 10 by an appropriate adhesive or fastener, or may be configured with a locking portion that locks onto a locked portion provided on the upper rail 10. In addition, when the door opening and closing device 1 is fitted into the sleeve wall as described above, the cover 45 on the sleeve wall side may be provided so as to cover the area from the door end vertical frame 5 to the middle mullion 7.
Furthermore, the door opening and closing device 1 may be configured to have a position detection unit that detects the position of the sliding door panel 9, a detection unit that detects an object to be detected such as a human body, or the like, provided at an appropriate location.

In addition, the above example shows an example in which an electric lock 30 is provided to prevent the first guided member 15A on the door leading side from moving toward the opening side, but instead of or in addition to this, a configuration in which an electric lock 30 is provided to prevent the second guided member 15B on the door trailing side from moving toward the opening side may be used.
In addition, in the above example, the electric lock 30 is arranged to be positioned at the end of the movement direction of the guided member 15 (first guided member 15A) of the sliding door panel 9 in the closed position in the opening direction, but this is not limited to this configuration.
In the above example, the lock receiving portion 19 of the guided member 15 (first guided member 15A) is provided between the rolling bodies 18, 18 on both sides in the door thickness direction when viewed in the door width direction, but is not limited to this. For example, the lock receiving portion 19 may be one of the rolling bodies 18, or may be provided on the guide body 17 of the guided member 15 (first guided member 15A) in which the rolling body 18 is provided only on one side in the door thickness direction.

In the above example, the driving wheel 26, the first driven wheel 22, and the second driven wheel 24 of the drive mechanism 20 are shown as pulleys, but they may be gears (sprockets) or the like. The string-like transmission body 28 is not limited to being a rope-like member that matches the driving wheel 26, the first driven wheel 22, and the second driven wheel 24, and may be a belt, a ball chain, a chain, or the like. In the above example, the driving wheel 26 and the motor 27 are provided between the first driven wheel 22 and the second driven wheel 24, but this is not limited to this form. One of the first driven wheel 22 and the second driven wheel 24 may be a driving wheel that constitutes the first wheel around which the string-like transmission body 28 is wound, and the other may be a driven wheel that constitutes the second wheel. In this case, a suitable motor may be provided to transmit rotation to the driving wheel. Furthermore, the drive mechanism 20 is not limited to a configuration including a cord-like transmission body 28 displaced by such a drive rotary wheel. For example, a configuration in which a connecting part displaced in the door width direction by a screw rotated by a motor is connected to the first guided member 15A may be used, and the drive mechanism 20 may have various other configurations. The configurations of the above-mentioned devices, members, and parts of the door opening and closing device 1 according to this embodiment are merely examples, and various other modifications are possible.

1 Door opening and closing device 10 Upper rail 15A First guided member (one guided member, guided member on the door end side)
15B: second guided member 18: rolling element 19: lock receiving portion 20: drive mechanism 22: first driven rotating wheel (first rotating wheel)
24 Second driven rotating wheel (second rotating wheel)
25 Drive section 28 Cord-like power transmission body 30 Electric lock 40 Lock section 41 Base end section 42 Lock shaft 43 Tip section 9 Sliding door panel 9a Upper end section

Claims (6)

the sliding door panel includes an upper rail that guides a first guided member and a second guided member connected to upper ends of both sides in the door width direction of the sliding door panel, and holds the sliding door panel in a suspending state so that the sliding door panel can slide in the door width direction; a drive mechanism that is connected to the first guided member and slides the first guided member in the door width direction; and an electric lock that is disposed so that the sliding door panel is located at a destination side in a movement direction of at least one of the first guided member and the second guided member in an opening direction when the sliding door panel is in a closed position, and that releasably prevents movement of the sliding door panel in the closed position toward the opening side,
The electric lock is elongated and extends generally in the door width direction from a base end that is held rotatably around an axis along the door thickness direction, and is equipped with a locking part whose tip end that engages with the lock receiving part of one of the guided members is moved up and down between an upper release position and a lower lock position, and the locking part is configured to be inclined so as to slope downward as it approaches the tip end in the locked position,
A door opening and closing device, characterized in that the lock receiving portion of the one of the guided members is formed into an inclined surface shape perpendicular to the longitudinal direction of the lock portion in the locked position . the sliding door panel is provided with an upper rail that guides a first guided member and a second guided member connected to the upper ends of both sides in the door width direction of the sliding door panel and suspends and holds the sliding door panel slidably in the door width direction; a drive mechanism that is connected to the first guided member and slides the first guided member in the door width direction; and an electric lock that releasably prevents the sliding door panel from moving toward the open side in the closed position,
The electric lock is elongated so as to extend generally in the door width direction from a base end that is held so as to be freely rotatable around an axis along the door thickness direction, and is equipped with a locking section whose tip engages with a lock receiving portion of at least one of the first guided member and the second guided member and is moved up and down between an upper release position and a lower locked position, and a connecting member is connected to the tip of the locking section which is moved up and down by a lock drive section to move the tip up and down. In claim 1 or 2 ,
A door opening and closing device characterized in that the electric lock is fixed to the upper rail so that the sliding door panel is positioned above the center of the one of the guided members in the door width direction when in the closed position. In any one of claims 1 to 3 ,
The drive mechanism includes a first rotating wheel and a second rotating wheel that are spaced apart in the door width direction, a string-like transmission body that is wound around each of the first rotating wheel and the second rotating wheel and connected to the first guided member, and a drive unit that transmits drive to the string-like transmission body,
A door opening and closing device, characterized in that the electric lock is positioned between the first rotating wheel and the second rotating wheel. In any one of claims 1 to 4 ,
A door opening and closing device characterized in that the electric lock is arranged so that when the sliding door panel is in the closed position, it is positioned above the center of the door width direction of the guided member on the door end side, so as to prevent the movement of the guided member on the door end side, which is one of the guided members, toward the open side. In any one of claims 1 to 5 ,
A door opening and closing device characterized in that the first guided member and the second guided member are freely rotatable around an axis along the door thickness direction, and are provided with rolling bodies on both sides in the door thickness direction that are spaced apart from each other in the door thickness direction, and the lock receiving portion of one of the guided members is arranged so as to be located between the rolling bodies on both sides in the door thickness direction when viewed in the door width direction.

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