JP7411352B2 - door device - Google Patents

Description

The present invention relates to a door device.

The door device described in Patent Document 1 below includes a latch device, and the latch device detachably engages with a striker to latch the door. This latch device has a fork lever and a claw lever. The fork lever is configured to rotate between a latch position where it engages with the striker and a latch release position where it disengages from the striker. Further, the claw lever is configured to rotate between a lock position and a permission position. In the locked position of the claw lever, the claw lever engages with the fork lever in the latched position, and rotation of the fork lever to the unlatched position is restricted. Thereby, the security performance of the door device can be improved.

JP 2019-60193 Publication

In recent years, the Building Standards Act has required the installation of so-called 24-hour ventilation systems in buildings. When a 24-hour ventilation system is installed in a building, a difference in air pressure occurs between indoors and outdoors, which may increase the load when opening a door from a closed position. In this case, the operability when opening the door may deteriorate. Therefore, it is desirable for a door device for a building to have a structure that can improve the operability when opening the door.

The present invention takes the above facts into consideration and provides a door device that can improve the operability when opening a door.

One or more embodiments of the present invention include a door that is openably connected to a door frame of a building and closes the door frame, and a door that is provided inside the door and that when the door is closed, the door A latch device that detachably engages with a striker provided on a frame to latch the door and releases the latch on the door when activated, and a latch that detects release of the latch on the door by the latch device. a release detection section; a push-out member provided inside the door and configured to be movable from a retracted position to a push-out position; a motor driven by a control section to move the push-out member; and a push-out position of the push-out member. an extrusion position detection section that detects movement of the extrusion member to the retraction position, and a retraction position detection section that detects movement of the extrusion member to the retraction position, and in the extrusion position, the extrusion member moves from the door in the thickness direction of the door. a pushing device that protrudes to one side and pushes out the door in the opening direction by coming into contact with the door frame, and after the latch release detection section detects that the latch device releases the latch with respect to the door, the control section , the motor is driven to move the extrusion member from the retracted position to the extrusion position, and if the extrusion member does not move to the extrusion position within a specific time from the start of driving the motor, the control unit moves the extrusion member from the retracted position to the extrusion position; This is a door device that moves the push-out member to a retracted position by driving the push-out member .

One or more embodiments of the present invention may be a door device in which , after the pushing member moves to the pushing position, the control unit drives the motor to move the pushing member from the pushing position to the retracted position. be.

In one or more embodiments of the present invention, the door is provided with an opening/closing detection section that detects opening/closing of the door, and after the motor starts driving, before the pushing member moves to the pushing position. When the door is opened, the control section drives the motor to move the pushing member to the retracted position, or the control section stops driving the motor and moves the pushing member to the retracted position. This is a door device that maintains the door in position.

According to one or more embodiments of the present invention, operability when opening a door can be improved.

FIG. 1 is a front view of the door device according to the present embodiment, viewed from the outside of the room. FIG. 2(A) is a bottom view of the left end of the door with a built-in push-up device and a part of the door frame seen from below in the closed position of the door, and FIG. 2(B) is a bottom view of the door in the closed position. FIG. 3 is a bottom view of the left end portion of the door in which the latch device is built and a part of the door frame, viewed from below, in the position shown in FIG. FIG. 3 is a front view showing the inside of the housing of the latch device shown in FIG. 1, as viewed from the outdoor side. FIG. 4 is a front view of the latch device shown in FIG. 3 viewed from the outdoor side, showing a state in which the latch device shown in FIG. 3 has transitioned to an unlocked state. FIG. 5(A) is a cross-sectional view of the inside of the housing of the latch device shown in FIG. 3 seen from below (cross-sectional view taken along line 5A-5A in FIG. 3), and FIG. 5(B) is a cross-sectional view of the inside of the housing of the latch device shown in FIG. FIG. 5(C) is a cross-sectional view from below showing a state in which the state of FIG. 5(A) has transitioned to an unlocked state, and FIG. 5(C) is a state in which the striker has separated from the fork lever from the state of FIG. 5(B). FIG. FIG. 6 is a front view showing the inside of the case of the extrusion device shown in FIG. 1, viewed from the outdoor side. FIG. 7 is a side sectional view of the inside of the case shown in FIG. 6 viewed from the right side (a sectional view taken along the line 7-7 in FIG. 6). FIG. 8 is a sectional view of the inside of the case shown in FIG. 6 viewed from below (a sectional view taken along the line 8-8 in FIG. 6). 9(A) is a perspective view showing the coupled state of the screw shaft and the extrusion member shown in FIG. 7, seen from the outdoor side and right side, and FIG. 9(B) is a perspective view of the screw shaft shown in FIG. 9(A). It is a perspective view seen from the outdoor side and the left side showing the combined state of the and extrusion member. FIG. 10 is a flowchart for explaining the operation of the extrusion device shown in FIG. 1. FIG. 11(A) is a sectional view from below showing a state in which the extrusion member of the extrusion device has moved from the retracted position to the extrusion position, and FIG. 11(B) is a sectional view when the extrusion member has reached the extrusion position. It is a sectional view seen from the bottom showing a state. FIG. 12(A) is a sectional view from the right side showing a state in which the extrusion member of the extrusion device has moved from the retracted position to the extrusion position side, and FIG. 12(B) is a state in which the extrusion member has reached the extrusion position. FIG.

Hereinafter, a door device 10 according to the present embodiment will be described using the drawings. The door device 10 is configured as a door device for a building. As shown in FIG. 1, the door device 10 includes a door 12 rotatably connected to a door frame 14 of a building (see FIG. 2), a latch device 30 and a push device 70 provided inside the door 12. and a control section 124 that controls the operation of the latch device 30 and the extrusion device 70. Hereinafter, the configurations of the door 12 and the door frame 14 will be described first, and then the latch device 30, the extrusion device 70, and the control unit 124 will be described.

In the following description, for convenience, the door 12 will be described in a closed position (closed position). Furthermore, arrow IN indicates the indoor side, and arrow OUT indicates the outdoor side, which are appropriately shown in the drawings.In the following explanation, the directions of the arrows IN and OUT are referred to as the prospective direction. Further, arrow UP, which is appropriately shown in the drawings, indicates the upper side (one side in the vertical direction), and arrow RH indicates the right side (one side in the horizontal direction) when viewed from the outside of the room.

(About doors and door frames)
The door 12 is formed into a substantially rectangular plate shape with the vertical direction as the longitudinal direction and the prospective direction as the thickness direction, and the left-right direction as the width direction of the door 12. Further, the door 12 includes a latch device 30 and a push-out device 70, which will be described later. For this reason, the door 12 is hollow at least in the portion housing the latch device 30 and the push-out device 70. A right end portion of the door 12 (one end portion in the width direction of the door 12) is rotatably connected to the door frame 14 by a hinge member 22 with the vertical direction as an axial direction. Further, the door 12 is configured to open outward from the closed position toward the outside of the room.

On one side (indoor side) of the door 12 in the perspective direction, there is a latch device 30 at the left end of the door 12 (the other end in the width direction of the door 12, that is, the open end of the door 12, which will be described in detail later). An insertion hole 12A is formed therethrough. The insertion hole 12A is formed in a substantially rectangular shape with the vertical direction as the longitudinal direction, and a striker 16, which will be described later, is inserted into the door 12 through the insertion hole 12A.

Further, an insertion portion 12B is formed through the wall portion of the door 12 on one side in the viewing direction above the insertion hole 12A. This insertion part 12B is formed in a substantially rectangular shape with the vertical direction as the longitudinal direction, and a part of the extrusion member 110 of the extrusion device 70, which will be described later, protrudes from the insertion part 12B to the outside of the door 12. ing.

Although the illustration of the entire door frame 14 is omitted, the door frame 14 is formed into a generally rectangular frame shape corresponding to the outer shape of the door 12 as a whole. As shown in FIGS. 2A and 2B, when the door 12 is in the closed position, the left end (open end) of the door 12 is placed in the receiving portion 14A of the door frame 14. ing. This receiving portion 14A is formed in a substantially crank shape when viewed from below. Specifically, the receiving portion 14A includes a first receiving surface 14A1 extending in the viewing direction, and a second receiving surface 14A2 extending to the right from one end of the first receiving surface 14A1 in the viewing direction. The inner circumferential surface 14A3 extends from the right end of the second receiving surface 14A2 toward one side in the viewing direction. The tip (open end) of the door 12 is arranged in a notch-shaped space formed by the first receiving surface 14A1 and the second receiving surface 14A2. Specifically, the open end surface of the door 12 is arranged to face the first receiving surface 14A1 in the left-right direction, and the indoor side surface at the tip of the door 12 is arranged to face the second receiving surface 14A2 in the direction of view. It has become.

A striker 16 (see FIG. 2(B)) is provided on the inner peripheral surface 14A3 of the door frame 14. The striker 16 is formed into a substantially rectangular plate shape with a thickness direction in the left-right direction and a longitudinal direction in the direction of projection. The base end (the end on the indoor side) of the striker 16 is arranged adjacent to the right side of the inner circumferential surface 14A3 of the door frame 14, and is fastened and fixed to the door frame 14 by a plurality of screws. .

When the striker 16 is fixed to the door frame 14, the tip side (outdoor side) portion of the striker 16 protrudes more toward the outdoor side than the second receiving surface 14A2. When the door 12 is in the closed position, the tip end portion of the striker 16 enters the inside of the door 12 through the insertion hole 12A of the door 12.

As shown in FIGS. 5A to 5C, a substantially rectangular striker hole 16A is formed through the tip end portion of the striker 16. As shown in FIGS. The striker hole 16A is configured as a hole into which a portion of the fork lever 36 is inserted when the striker 16 and the fork lever 36 of the latch device 30, which will be described later, are engaged. Further, the tip portion of the striker 16 (a portion constituting a part of the periphery of the striker hole 16A) is configured as an engaged portion 16B, and the engaged portion 16B extends in the vertical direction.

Further, as shown in FIGS. 2(A) and 2(B), a sealing member 18 is provided at the right end portion of the second receiving surface 14A2 of the door frame 14. The seal member 18 is formed in a substantially elongated shape extending in the vertical direction, and is made of an elastic member. In the closed position of the door 12, the seal member 18 is elastically deformed to seal between the door 12 and the second receiving surface 14A2.

Further, as shown in FIG. 1, an opening/closing sensor 20 serving as an "opening/closing detection section" is provided at the upper left end of the door 12. The opening/closing sensor 20 is composed of a magnetic sensor or the like, and is electrically connected to a control section 124, which will be described later. Further, a magnet (not shown) is provided on the door frame 14 at a position corresponding to the opening/closing sensor 20. Thereby, the control unit 124, which will be described later, is configured to detect whether the door 12 is opened or closed based on the output signal of the opening/closing sensor 20.

(About the latch device)
The latch device 30 is configured as a device that engages the striker 16 and latches the door 12 when the door 12 is in the closed position. As shown in FIGS. 1 and 3 to 5, the latch device 30 is disposed inside a portion of the door 12 that corresponds to the insertion hole 12A. The latch device 30 has a housing 32 that forms an outer shell of the latch device 30. The latch device 30 also includes a fork lever 36, a claw lever 42, a latch plate 50, a regulation lever 56, a latch motor 62, and a hub 68, which are housed in the housing 32. Each configuration of the latch device 30 will be described below.

[About housing]
The housing 32 is formed in the shape of a hollow, substantially rectangular box whose longitudinal direction is the vertical direction, and the thickness direction of the housing 32 matches the thickness direction of the door 12. A housing 32 is housed inside the door 12. Further, a communication hole 32A is formed through the housing 32 at a position facing the insertion hole 12A.

Inside the housing 32, a pair of upper and lower guide plates 34 are provided on the right side of the communication hole 32A. The guide plate 34 is formed into a substantially rectangular plate shape with a thickness direction extending in the up-down direction and a longitudinal direction extending in the left-right direction. A pair of guide plates 34 are fixed to the housing 32 with a predetermined interval in the vertical direction.

[About the fork lever]
The fork lever 36 is arranged between the pair of guide plates 34. The fork lever 36 is formed into a substantially fan-shaped block shape when viewed from below. The fork lever 36 is rotatably supported by a first support shaft 38 with the vertical direction as an axial direction, and the first support shaft 38 is fixed to the pair of guide plates 34. As a result, the fork lever 36 is moved between the engaged position shown in FIG. 5(A) and the disengaged position (in which the fork lever 36 is rotated from the engaged position to one side in the rotational direction (the direction of arrow A in FIG. 5(A)). It is configured to be rotatable between the position shown in FIG. 5(C).

Further, the end surface of the fork lever 36 on one side in the rotational direction is configured as an engagement surface 36A. Further, an engagement groove 36B is formed in the other side of the fork lever 36 in the rotational direction. At the engagement position of the fork lever 36, the engagement groove 36B is opened to the left, and the engaged portion 16B of the striker 16 is inserted into the engagement groove 36B. As a result, the striker 16 and the fork lever 36 are engaged in the forward direction. On the other hand, in the disengaged position of the fork lever 36, the engagement groove 36B is opened toward the communication hole 32A of the housing 32, allowing the engaged portion 16B to disengage from the engagement groove 36B. There is.

A biasing spring 40 configured as a torsion spring is attached to the first support shaft 38, and the biasing spring 40 biases the fork lever 36 toward the disengaged position. Thereby, when the fork lever 36 and the striker 16 are disengaged, the fork lever 36 is held at the disengaged position.

[About the claw lever]
The claw lever 42 is arranged on the right side of the fork lever 36. The claw lever 42 is formed in a substantially V-shaped block shape that is open to one side in the viewing direction when viewed from below. Specifically, the claw lever 42 has a first arm portion 42A and a second arm portion 42B. The joint portion of the first arm portion 42A and the second arm portion 42B is rotatably supported by a second support shaft 44 with the vertical direction as an axial direction. Fixed. Thereby, the claw lever 42 is configured to be rotatable between the lock position shown in FIG. 5(A) and the permission position shown in FIGS. 5(B) and (c).

In the permitted position of the claw lever 42, the first arm portion 42A is disposed on the right side of the fork lever 36, and rotation of the fork lever 36 is permitted. Thereby, the latch device 30 is configured to be in the unlatched state when the claw lever 42 is placed in the permission position (see FIGS. 5(B) and 5(C)). On the other hand, in the locked position of the claw lever 42, the tip of the first arm portion 42A is arranged adjacent to the engagement surface 36A of the fork lever 36 in the engagement position on one side in the rotational direction of the fork lever 36. (See Figure 5(A)). As a result, the fork lever 36 and the claw lever 42 are engaged, and the claw lever 42 restricts the rotation of the fork lever 36 to one side in the rotational direction, so that the fork lever 36 in the engaged position is locked. There is. In other words, the latch of the latch device 30 with respect to the door 12 is locked. Further, a biasing spring 46 configured as a torsion spring is attached to the second support shaft 44, and the biasing spring 46 biases the claw lever 42 toward the lock position.

Further, on the right side of the claw lever 42, a lever detection switch 48 is provided as a "latch release detection section" for detecting the permitted position of the claw lever 42. The lever detection switch 48 is electrically connected to a control section 124, which will be described later. Then, when the claw lever 42 rotates from the lock position to the permission position, the second arm section 42B presses the lever detection switch 48, and the lever detection switch 48 outputs an on signal to the control section 124. There is. That is, the lever detection switch 48 is configured as a switch that detects the unlatched state of the latch device 30.

The latch plate 50 is formed into a substantially U-shaped plate that is open to one side in the viewing direction when viewed from the left and right. Specifically, the latch plate 50 includes a pair of upper and lower side plate portions 50A that are arranged to vertically sandwich the pair of guide plates 34, and a base plate portion 50B that connects the right end portions of the pair of side plate portions 50A. It is composed of . The side plate portion 50A is supported by the guide plate 34 so as to be slidable in the left-right direction. Specifically, the latch plate 50 is configured to slide between a first position shown in FIG. 3 and a second position (see FIG. 4) that is slid to the right from the first position.

Moreover, a release pin 52 whose axial direction is in the vertical direction is spanned between the pair of side plate parts 50A. In the first position of the latch plate 50, the release pin 52 is disposed between the first arm part 42A and the second arm part 42B of the claw lever 42. Furthermore, when the latch plate 50 slides from the first position to the second position when the claw lever 42 is in the locked position, the release pin 52 rotates the claw lever 42 from the locked position to the permission position.

Furthermore, a support piece 50C bent toward one side in the viewing direction is formed at the right end of the base plate portion 50B, and a support pin 50D protruding to the right is provided on the support piece 50C. A biasing spring 54 configured as a compression coil spring is attached to the support pin 50D, and the biasing spring 54 biases the latch plate 50 to the left (toward the first position). Further, engagement pieces 50E extending in the vertical direction are integrally formed at the middle portion of the base plate portion 50B in the left-right direction.

[About the regulation lever]
The regulation lever 56 is formed into a substantially T-shaped plate shape with the direction in which the plate is viewed in the thickness direction. Specifically, the regulation lever 56 includes a lever main body 56A extending in the vertical direction, and a regulation piece 56B extending leftward from a longitudinally intermediate portion of the lever main body 56A. The restriction lever 56 is arranged between the latch plate 50 and the housing 32. A longitudinally intermediate portion of the lever main body 56A is rotatably supported by a support pin 58 provided in the housing 32 and having its axial direction in the direction of view. Thereby, the regulation lever 56 is configured to be rotatable between the regulation position shown in FIG. 3 and the non-regulation position shown in FIG. 4.

In the regulating position of the regulating lever 56, the tip of the regulating piece 56B is arranged adjacent to the right side of the second arm portion 42B of the claw lever 42 in the locking position, and is configured to engage with the second arm portion 42B. There is. Thereby, the restriction lever 56 restricts the rotation of the claw lever 42 from the lock position to the permission position. Further, a biasing spring 60 configured as a torsion spring is connected to the lever body 56A, and the biasing force of the biasing spring 60 holds the regulation lever 56 in the non-regulation position or the regulation position. It has become.

[About the latch motor]
The latch motor 62 is disposed in the upper left part of the housing 32 and is electrically connected to a control section 124, which will be described later. A worm 64 is provided on the output shaft of the latch motor 62, and a substantially circular transmission gear 66 is meshed with the worm 64. This transmission gear 66 is rotatably supported by the housing 32 with the viewing direction as the axial direction.

[About the hub]
Hub 68 is located on the right side of transmission gear 66. The hub 68 includes a substantially cylindrical hub body 68A whose axial direction is in the direction of view, and a power transmission piece 68B extending downward from the hub body 68A. The hub body 68A is rotatably supported by the housing 32. A hub gear portion 68A1 is integrally formed on the outer peripheral portion of the hub body 68A, and the hub gear portion 68A1 meshes with the transmission gear 66. Thereby, the hub 68 is configured to rotate between the locked position shown in FIG. 3 and the unlocked position shown in FIG. 4 by driving the latch motor 62.

Further, the inner side of the hub body 68A is a connecting hole 68A2, and the housing 32 is formed with an exposure hole (not shown) for exposing the connecting hole 68A2. Further, a thumb turn (not shown) is attached to the wall on the indoor side of the door 12, and a key part (not shown) is attached to the wall on the outdoor side of the door 12. The thumb turn and the cylinder of the key are connected to the connection hole 68A2 of the hub 68 via the exposure hole.

The power transmission piece 68B is formed into a substantially fan-shaped plate shape with the direction of the projection being the thickness direction. A pair of first drive pins 68B1 and second drive pins 68B2, which protrude to both sides in the thickness direction of the power transmission piece 68B, are integrally formed at the tip of the power transmission piece 68B. When the hub 68 is in the locked position, the regulation lever 56 is placed in the regulation position by the second drive pin 68B2. On the other hand, in the unlocked position of the hub 68, the first drive pin 68B1 engages with the engagement piece 50E of the latch plate 50 in the first position, and the latch plate 50 slides to the second position. .

(About extrusion equipment)
The pushing device 70 is configured as a device that pushes the door 12 by a predetermined amount (10 mm in this embodiment) from the closed position toward the outside of the room before the user opens the door 12 . As shown in FIG. 1, the extrusion device 70 is arranged above the latch device 30 inside the door 12. That is, the extrusion device 70 is built into the left end of the door 12.

As shown in FIGS. 6 to 9, the extrusion device 70 includes a case 72 and a cover 78 that constitute the outer shell of the extrusion device 70. The latch device 30 also includes an extrusion motor 80 as a "motor", a transmission mechanism 86, an extrusion member 110, and an evacuation position switch 120 as an "evacuation position detection section" housed in the case 72 and the cover 78. and an extrusion position switch 122 as an "extrusion position detection section". Each configuration of the extrusion device 70 will be described below.

[About the case]
The case 72 is formed into a substantially rectangular box shape that is open to one side in the viewing direction, and the thickness direction of the case 72 coincides with the thickness direction of the door 12. A support plate 74 (see FIGS. 7 and 9) for supporting a screw shaft 100, which will be described later, is provided at the left end of the opening of the case 72. The support plate 74 is formed into a substantially hat shape that is open toward the bottom wall of the case 72 when viewed from the left and right directions. The upper and lower ends of the support plate 74 are fixed to the bottom wall of the case 72 via a rectangular parallelepiped guide member 76. That is, the support plate 74 is disposed facing the bottom wall of the case 72 with a predetermined distance in the viewing direction.

[About the cover]
The cover 78 is formed into a substantially rectangular plate shape with the direction in which it is viewed as the thickness direction. A cover 78 is fixed to the case 72 and closes the opening of the case 72 from one side in the viewing direction. Further, the intermediate portion of the support plate 74 in the vertical direction protrudes from the cover 78 toward one side in the viewing direction, and the cover 78 has a cutout in which the support plate 74 is placed.

[About the extrusion motor]
The extrusion motor 80 is arranged at the lower right part of the case 72. Specifically, the extrusion motor 80 is arranged with its axial direction being inclined slightly to the right as it goes upwards when viewed from the perspective direction. The extrusion motor 80 is housed in a gear cover 82 (see FIG. 8) disposed between the case 72 and the cover 78, and is fixed to the gear cover 82. The gear cover 82 is formed into a hollow substantially box shape and is fixed to the case 72. A worm gear 84 is provided on the output shaft of the extrusion motor 80 so as to be rotatable therewith. Further, the extrusion motor 80 is electrically connected to a control section 124, which will be described later, and is configured to be driven by the control section 124.

[About the transmission mechanism]
The transmission mechanism 86 includes a gear train including a first gear 88, a second gear 92, and a third gear 96, and a screw shaft 100.

The first gear 88 is configured as a two-stage gear whose axial direction is the direction of view. Specifically, the first gear 88 includes a generally cylindrical small-diameter gear portion 88A with the axial direction in the expected direction, and a disk-shaped large-diameter gear portion 88B with the axial direction in the expected direction. It is configured. The large diameter gear portion 88B is set to have a larger diameter than the small diameter gear portion 88A, and extends radially outward from the small diameter gear portion 88A from a portion on one side in the viewing direction of the small diameter gear portion 88A. The first gear 88 is disposed on the left side of the worm gear 84, and the small diameter gear portion 88A is rotatably supported by a first support shaft 90 fixed to the gear cover 82. Further, a plurality of gear teeth are formed on the outer periphery of the other side of the small diameter gear portion 88A in the viewing direction and on the outer periphery of the large diameter gear portion 88B. It is formed over the entire circumference of the portion 88B in the circumferential direction. The large diameter gear portion 88B is disposed adjacent to the left side of the worm gear 84 and meshed with the worm gear 84.

The second gear 92, like the first gear 88, is configured as a two-stage gear with the axial direction facing forward. Specifically, the second gear 92 includes a generally cylindrical small-diameter gear portion 92A with the axial direction in the expected direction, and a disc-shaped large-diameter gear portion 92B with the axial direction in the expected direction. It is configured. The large-diameter gear portion 92B is set to have a larger diameter than the small-diameter gear portion 92A, and extends radially outward from the small-diameter gear portion 92A from a portion on one side of the small-diameter gear portion 92A in the perspective direction. The second gear 92 is disposed on the left side of the first gear 88, and the small diameter gear portion 92A is rotatably supported by a second support shaft 94 fixed to the gear cover 82. Further, a plurality of gear teeth are formed on the outer periphery of the small diameter gear portion 92A on the other side in the viewing direction and on the outer periphery of the large diameter gear portion 92B. It is formed over the entire circumferential direction of 92B. The large diameter gear portion 92B is disposed adjacent to the left side of the small diameter gear portion 88A of the first gear 88, and is meshed with the small diameter gear portion 88A.

The third gear 96 includes a substantially cylindrical shaft portion 96A that constitutes the axial center portion of the third gear 96 and whose axial direction is the axial direction, and a disc-shaped third gear portion whose axial direction is the direction of the plate thickness. 96B. The third gear portion 96B extends radially outward of the shaft portion 96A from the other side of the shaft portion 96A in the viewing direction. A third gear 96 is disposed on the left side of the second gear 92 and is rotatably supported by a third support shaft 98 fixed to the gear cover 82. Further, a plurality of gear teeth are formed on the outer circumferential portion of the third gear portion 96B over the entire circumferential direction of the third gear portion 96B. The third gear portion 96B is disposed adjacent to the left side of the small diameter gear portion 92A of the second gear 92, and is meshed with the small diameter gear portion 92A.

The screw shaft 100 includes a screw shaft main body 102 and a connecting gear 104. The screw shaft main body 102 is formed in a substantially cylindrical shape with the axial direction in the direction of view. The screw shaft main body 102 is arranged on the left side of the third gear 96, one end of the screw shaft main body 102 is rotatably supported by the support plate 74, and the other end of the screw shaft main body 102 is connected to the case 72. is rotatably supported on the bottom wall of the

The longitudinally intermediate portion of the screw shaft main body 102 is configured as a threaded portion 102A, and the outer diameter of the threaded portion 102A is set to be larger than the outer diameter of one end and the other end of the screw shaft main body 102. There is. A male thread is formed on the outer periphery of the threaded portion 102A. Furthermore, the axial length of the other end of the screw shaft main body 102 is set longer than the axial length of the one end of the screw shaft main body 102.

The connecting gear 104 is formed into a substantially cylindrical shape with the axial direction facing toward the front. The other end of the screw shaft main body 102 is fitted into a connecting gear 104, and the connecting gear 104 is fixed to the other end of the screw shaft main body 102 so as to be integrally rotatable. A plurality of gear teeth are formed on the outer periphery of the connecting gear 104 over the entire circumferential direction of the connecting gear 104 . The connecting gear 104 is meshed with the third gear portion 96B of the third gear 96. As a result, the driving force of the extrusion motor 80 is transmitted to the screw shaft 100 by the gear train (first gear 88, second gear 92, and third gear 96), and the screw shaft 100 rotates around its own axis. It is configured.

[About extruded parts]
As shown in FIG. 9, the extrusion member 110 includes a nut member 112 and an extrusion plate 118. The nut member 112 includes a nut body 114 and a guide portion 116, and the nut body 114 and the guide portion 116 are integrally formed. The nut body 114 is configured as a nut having a female threaded portion inside, and the outer shape of the nut body 114 when viewed from the viewing direction is formed into a substantially elliptical shape. The nut body 114 is screwed into the threaded portion 102A of the threaded shaft 100 in the transmission mechanism 86 (see FIG. 8). That is, the extrusion member 110 and the transmission mechanism 86 are connected (coupled) by a so-called screw mechanism.

The guide portion 116 is formed into a substantially rectangular plate shape with the direction of the plate thickness as the direction in which the guide portion 116 is viewed, and is formed integrally with the nut body 114 . Specifically, the guide portion 116 is formed integrally with the nut body 114 so as to cover the nut body 114 from one side in the viewing direction, and the guide portion 116 projects vertically from the nut body 114. Further, the guide portion 116 is disposed between a pair of upper and lower guide members 76, and rotation of the guide portion 116 is restricted by the guide member 76. Thereby, when the screw shaft 100 rotates, the nut member 112 is guided by the pair of guide members 76 and relatively moves in the axial direction of the screw shaft 100. Further, an arm portion 116A extending toward the other side in the viewing direction is formed at the upper end of the guide portion 116, and a projection portion 116B projecting upward is formed at the tip portion of the arm portion 116A. .

The extrusion plate 118 is arranged on one side of the nut member 112 in the viewing direction, and is formed into an L-shaped plate shape when viewed from above. Specifically, the extrusion member 110 includes a fixed plate portion 118A whose viewing direction is the plate thickness direction, and an actuating plate portion 118B extending from the left end of the fixed plate portion 118A to one side in the viewing direction. It is configured. A circular insertion hole 118A1 (see FIG. 8) is formed through the fixing plate portion 118A, and the insertion hole 118A1 is arranged coaxially with the female screw portion of the nut body 114.

The fixed plate portion 118A is fixed to the nut member 112 (specifically, the guide portion 116), and the screw shaft 100 is inserted into the insertion hole 118A1 of the extrusion member 110 (see FIG. 8). Thereby, as the screw shaft 100 rotates, the extrusion member 110 is configured to reciprocate in the viewing direction. Specifically, the extrusion member 110 is in a retracted position (the position shown in FIGS. 7 and 8) and an extrusion position (FIGS. 11(B) and 12(B)), which is moved from the retracted position to one side in the viewing direction. It is configured to move between the position shown in the figure.

In the retracted position of the pushing member 110, the pushing member 110 is set to be housed inside the door 12. On the other hand, in the extrusion position of the extrusion member 110, the tip of the actuating plate portion 118B of the extrusion member 110 is configured to pass through the insertion portion 12B of the door 12 and protrude from the door 12 to one side in the viewing direction. . Note that the left end portion of the fixed plate portion 118A protrudes to the left side of the case 72, and a notch is formed in the left wall of the case 72 for disposing the extrusion member 110.

Further, in the pushing position of the pushing member 110, the tip of the actuating plate portion 118B is arranged on the left side with respect to the sealing member 18, and is configured to press the second receiving surface 14A2 of the door frame 14. That is, the positions of the seal member 18 and the actuating plate part 118B in the left-right direction are set so that the seal member 18 and the actuating plate part 118B do not interfere with each other (see FIG. 2(A)). Furthermore, the amount of protrusion L of the actuating plate portion 118B from the door 12 at the extrusion position of the extrusion member 110 (see FIG. 11(B)) is set to be larger than the thickness T of the sealing member 18 (see FIG. 2(A)). has been done.

[About the evacuation position switch]
As shown in FIG. 7, the retracted position switch 120 is configured as a switch that detects the retracted position of the pushing member 110. This retracted position switch 120 is disposed adjacent to the lower side of the nut member 112 and is fixed to the guide member 76. The retreat position switch 120 is electrically connected to a control section 124, which will be described later. When the push-out member 110 is in the retracted position, the retracted position switch 120 is pressed by the guide portion 116 of the nut member 112 and outputs an on signal to the control portion 124. Further, when the push-out member 110 moves a predetermined amount from the retreat position to the push-out position side, the pressure of the guide section 116 on the retreat position switch 120 is released, and the retreat position switch 120 is switched from on to off. There is.

[About the extrusion position switch]
The push-out position switch 122 is configured as a switch that detects the push-out position of the push-out member 110. The push-out position switch 122 is disposed adjacent to the upper side of the nut member 112 and is fixed to the guide member 76 . The extrusion position switch 122 is electrically connected to a control section 124, which will be described later. In the retracted position of the push-out member 110, the push-out position switch 122 is not pressed by the guide portion 116 of the nut member 112, and is configured to output an off signal to the control unit 124. On the other hand, when the extrusion member 110 moves from the retracted position to the extrusion position, the protrusion 116B of the guide section 116 presses the extrusion position switch 122 (see FIG. 12(B)), and the extrusion position switch 122 changes from OFF to ON. , and an on signal is output to the control section 124.

(About the control unit)
The control unit 124 is electrically connected to the opening/closing sensor 20, the lever detection switch 48, the latch motor 62, the extrusion motor 80, the evacuation position switch 120, and the extrusion position switch 122 described above. Further, the control unit 124 includes a remote control key owned by the user and a wireless communication unit configured to enable wireless communication, and drives and controls the latch motor 62 based on an output signal from the remote control key. It looks like this. Further, the control unit 124 is configured to drive and control the extrusion motor 80 based on output signals from the opening/closing sensor 20, the lever detection switch 48, the retraction position switch 120, and the extrusion position switch 122.

(effect)
Next, the operation of bringing the latch device 30 into the unlatched state will be explained, and then the operation of the extrusion device 70 will be explained, and the operation and effects of this embodiment will be explained.

(About the operation of setting the latch device to the unlatched state)
As shown in FIGS. 3 and 5A, when the door 12 is latched and locked by the latch device 30, the fork lever 36 is placed in the engagement position, and the fork lever 36 and the striker 16 are engaged. It matches. Further, in this state, the claw lever 42 is placed in the lock position, the restriction lever 56 is placed in the restriction position, and rotation of the fork lever 36 toward the disengagement position is restricted. Furthermore, in this state, the hub 68 is placed in the locked position.

In this state, in order to bring the latch device 30 into the unlatched state, the control unit 124 drives the latch motor 62 by the user's operation of a remote control key, etc., and rotates the hub 68 from the locked position to the unlocked position. . At this time, the second drive pin 68B2 of the hub 68 presses the regulation lever 56, and the regulation lever 56 is rotated from the regulation position to the non-regulation position (see FIG. 4).

On the other hand, when the hub 68 rotates from the locked position to the unlocked position, the first drive pin 68B1 of the hub 68 presses the engagement piece 50E of the latch plate 50 to the right. Therefore, the latch plate 50 slides from the first position to the second position (see FIG. 4). Further, when the latch plate 50 slides from the first position to the second position, the release pin 52 of the latch plate 50 presses the second arm portion 42B of the claw lever 42, and the claw lever 42 releases the biasing spring 46. It rotates from the lock position to the permission position against the biasing force. As a result, the first arm portion 42A of the claw lever 42 is displaced to the right with respect to the fork lever 36. As a result, as shown in FIG. 5(B), the engagement state between the claw lever 42 and the fork lever 36 is released, and rotation of the fork lever 36 from the engagement position to the disengagement position is permitted. become a state. That is, the latch device 30 transitions to the unlatched state.

Note that when the claw lever 42 rotates to the permission position, the lever detection switch 48 is activated, and the lever detection switch 48 outputs an on signal to the control unit 124.

(About the operation of the extrusion device)
Next, the operation of the extrusion device 70 will be explained using the flowchart in FIG. In the initial state of the extrusion device 70, the extrusion member 110 is arranged at the retracted position, and the retraction position switch 120 is turned on by the guide portion 116 of the extrusion member 110. As a result, an on signal is output from the retract position switch 120 to the control section 124. On the other hand, the push-out position switch 122 is not pressed by the protrusion 116B of the guide section 116 and is turned off.

In the operation of the extrusion device 70, first, in step S1, the control unit 124 determines whether the door 12 is placed in the closed position based on the output signal from the opening/closing sensor 20 of the door 12. In step S1, if the door 12 is not placed in the closed position ("No" in step S1), the process of the extrusion device 70 is ended. On the other hand, in step S1, if the door 12 is placed in the closed position ("Yes" in step S1), the process moves to step S2.

In step S2, the control unit 124 determines whether the latch device 30 is in the unlatched state based on the output signal from the lever detection switch 48 of the latch device 30. In step S2, if the latch device 30 is not in the unlatched state ("No" in step S2), the process returns to step S1. On the other hand, in step S2, if the latch device 30 is in the unlatched state ("Yes" in step S2), the process moves to step S3.

In step S3, the control unit 124 causes the extrusion motor 80 to rotate normally. As a result, the driving force of the extrusion motor 80 is transmitted to the screw shaft 100 via the worm gear 84, the first gear 88, the second gear 92, and the third gear 96, and the screw shaft 100 rotates to one side in the rotational direction. do. Therefore, the nut member 112 of the extrusion member 110 screwed onto the screw shaft 100 rotates relative to the screw shaft 100, and the extrusion member 110 moves from the retracted position to the extrusion position (Fig. 11(A) ) and FIG. 12(A)). As a result, the protrusion 116B of the push-out member 110 is separated from the retracted position switch 120, and the retracted position switch 120 is switched from on to off. As a result, an off signal is output from the retreat position switch 120 to the control section 124. After the processing in step S3, the process moves to step S4.

In step S4, the control unit 124 determines whether the door 12 is opened or not before the extrusion member 110 moves to the extrusion position based on the output signals from the opening/closing sensor 20 of the door 12 and the extrusion position switch 122 of the extrusion device 70. Decide whether or not. Specifically, before the control unit 124 receives the ON signal from the push-out position switch 122, it determines whether the door 12 is opened based on the output signal of the opening/closing sensor 20. In step S4, if the door 12 is opened before receiving the ON signal from the extrusion position switch 122 ("Yes" in step S4), the process moves to step S5.

In step S5, the control unit 124 stops driving the extrusion motor 80 and reverses the extrusion motor 80. That is, if the door 12 is opened before the pushing member 110 moves to the pushing position, for example, in order to prevent the pushing member 110 in the pushing position from hitting the door frame 14 when the door 12 is closed again. , the extrusion motor 80 is reversed. As a result, the screw shaft 100 rotates to the other side in the rotational direction, and the push-out member 110 moves to the retracted position.

After the processing in step S5, the process moves to step S6. In step S6, the control unit 124 stops driving the extrusion motor 80 based on the output signal of the retreat position switch 120. Specifically, the control unit 124 receives the ON signal from the retreat position switch 120 and stops driving the extrusion motor 80. As a result, the pushing member 110 is returned to the retracted position. After the processing in step S6, the process returns to step S1.

On the other hand, in step S4, if the door 12 is not opened before receiving the ON signal from the push-out position switch 122 ("No" in step S4), the process moves to step S7. In step S7, the control unit 124 determines whether the extrusion member 110 has reached the extrusion position within a specific time after the extrusion motor 80 starts to rotate normally. Specifically, the control unit 124 determines whether or not an on signal is received from the extrusion position switch 122 within a specific time after the extrusion motor 80 starts to rotate forward.

In step S7, if the pushing member 110 has not reached the pushing position within the specific time ("No" in step S7), the process moves to step S5. That is, for example, if the extrusion member 110 has not reached the extrusion position within a specific time from the start of normal rotation of the extrusion motor 80, there is a possibility that the extrusion device 70 is not operating normally. Therefore, the extrusion motor 80 is reversed to return the extrusion member 110 to the retracted position.

In step S7, if the pushing member 110 reaches the pushing position within the specific time ("Yes" in step S7), the process moves to step S8. In step S8, the control unit 124 stops driving the extrusion motor 80 based on the ON signal from the extrusion position switch 122. Thereby, the movement of the extrusion member 110 toward the indoor side is stopped at the extrusion position. Furthermore, when the push-out member 110 moves to the push-out position, the tip of the actuating plate portion 118B of the push-out member 110 projects from the door 12 toward the indoor side and presses the door frame 14 (FIGS. 11(B) and 12). (See (B)). As a result, the door 12 is pushed out by a predetermined amount toward the outdoor side by the pushing member 110, and rotated from the closed position toward the opening direction. Therefore, a predetermined gap is formed between the door 12 and the door frame 14 (specifically, the seal member 18).

Furthermore, when the door 12 is pushed out from the closed position in the opening direction, the striker 16 is displaced relative to the fork lever 36 of the latch device 30. As a result, the fork lever 36 rotates from the engagement position to the disengagement position in accordance with the displacement of the striker 16 (see FIG. 5(C)). Then, the engaged portion 16B of the striker 16 can be disengaged from the engagement groove 36B of the fork lever 36.

After the processing in step S8, the process moves to step S9. In step S9, the control unit 124 causes the extrusion motor 80 to rotate in reverse. After the processing in step S9, the process moves to step S10.

In step S10, the control unit 124 stops driving the extrusion motor 80 based on the output signal of the retreat position switch 120. Specifically, the control unit 124 receives the ON signal from the retreat position switch 120 and stops driving the extrusion motor 80. As a result, the pushing member 110 is returned to the retracted position. After the process of step S10, the process of the extrusion device 70 is ended.

By the way, in a building to which a 24-hour ventilation system is applied, the indoor air pressure becomes negative, and a pressure difference may occur between the indoor and outdoor areas. In this case, the load when opening the door 12 increases due to the pressure difference between indoors and outdoors. This may reduce the operability when opening the door 12.

Here, in the door device 10 of this embodiment, an extrusion device 70 is provided inside the door 12. The extrusion device 70 includes an extrusion member 110 and an extrusion motor 80 driven by a control section 124. Further, after detecting the unlatched state of the latch device 30 by the lever detection switch 48 of the latch device 30, the control unit 124 drives the extrusion motor 80 to move the extrusion member 110 from the retracted position to the extrusion position. At the extrusion position of the extrusion member 110, the tip of the actuating plate portion 118B of the extrusion member 110 protrudes from the door 12 toward one side in the perspective direction (one side in the thickness direction of the door 12) and comes into contact with the door frame 14. As a result, the door 12 is pushed out toward the outdoor side by the pushing member 110 and rotated in the opening direction. As a result, a gap can be formed between the door frame 14 and the door 12. Therefore, even if there is a difference in air pressure between indoors and outdoors, the air pressures inside and outside can be balanced after the extrusion device 70 is operated. Therefore, it is possible to suppress an increase in the load when the user opens the door 12. As described above, the operability when opening the door 12 can be improved.

The extrusion device 70 also includes a retraction position switch 120 that detects movement of the extrusion member 110 to the retraction position, and an extrusion position switch 122 that detects movement of the extrusion member 110 to the extrusion position. After the extrusion member 110 moves to the extrusion position, the control unit 124 drives the extrusion motor 80, and the extrusion member 110 is moved from the extrusion position to the retracted position. Therefore, it is possible to prevent the door 12 from being opened and closed with the extrusion member 110 protruding from the door 12. Thereby, for example, when the user passes through the door frame 14 with the door 12 open, it is possible to prevent the push-out member 110 from getting caught on the user's clothing or the like. Moreover, when closing the door 12 again, it is possible to suppress the extrusion member 110 from interfering with the door frame 14. Thereby, the fork lever 36 of the latch device 30 can be satisfactorily engaged with the striker 16 when the door 12 is in the closed position.

Further, if the extrusion member 110 does not move to the extrusion position within a specific time from the start of normal rotation of the extrusion motor 80, the control unit 124 drives the extrusion motor 80 in reverse to move the extrusion member 110 to the retracted position. . That is, for example, if the extrusion member 110 has not reached the extrusion position within a specific time from the start of normal rotation of the extrusion motor 80, there is a possibility that the extrusion device 70 is not operating normally. Therefore, the extrusion motor 80 can be reversed by the control unit 124 to return the extrusion member 110 to the retracted position. Thereby, the door 12 can be opened and closed by the user while the extrusion device 70 is returned to its initial state.

Further, the door 12 is provided with an opening/closing sensor 20 that detects whether the door 12 is opened or closed. When the door 12 is opened after the extrusion motor 80 starts rotating in the normal direction and before the extrusion member 110 moves to the extrusion position, the control unit 124 drives the extrusion motor 80 in the reverse direction, and the extrusion member 110 moves to the retracted position. will be moved to. Therefore, when the user opens the door 12 from the closed position while the push-out member 110 is moving from the retracted position to the push-out position, the push-out member 110 can be immediately returned to the retreat position. Therefore, as described above, it is possible to prevent the door 12 from being opened and closed with the extrusion member 110 protruding from the door 12. Thereby, for example, when the user passes through the door frame 14 with the door 12 open, it is possible to prevent the push-out member 110 from getting caught on the user's clothing or the like. Moreover, when closing the door 12 again, it is possible to suppress the extrusion member 110 from interfering with the door frame 14. Therefore, in the closed position of the door 12, the fork lever 36 of the latch device 30 can be satisfactorily engaged with the striker 16.

In addition, in the door device 10 of the present embodiment, when the door 12 is opened after the extrusion motor 80 starts driving in the normal direction and before the extrusion member 110 moves to the extrusion position, the control unit 124 rotates the extrusion motor 80 in the reverse direction. When the door 12 is opened, the control unit 124 stops normal rotation of the extrusion motor 80 and maintains the extrusion member 110 in the retracted position. Good too. That is, for example, when the door 12 is opened immediately after the forward rotation of the extrusion motor 80 is started, the state in which the extrusion member 110 presses the retraction position switch 120 is maintained, and the extrusion member 110 is still placed in the retraction position. There may be cases where Therefore, in this case, the control unit 124 may stop normal rotation of the extrusion motor 80 to maintain the extrusion member 110 at the retracted position.

Further, in the door device 10 of the present embodiment, the control unit 124 operates the latch motor 62 of the latch device 30 to bring the latch device 30 into the unlatched state when the user operates a remote control key or the like. However, the method of bringing the latch device 30 into the unlatched state is not limited to this. For example, an electrostatic sensor is provided on the doorknob of the door 12, and when the user touches the doorknob, the control unit 124 operates the latch motor 62 based on a detection signal from the electrostatic sensor to latch the latch device 30. It may be set to a released state.

Furthermore, in the door device 10 of the present embodiment, the latch device 30 includes the latch motor 62 and is configured as an electric latch device, but the latch device 30 is configured as a manual latch device. You may. That is, the latch device 30 may be brought into the unlatched state by manual operation by the user.

Further, in the door device 10 of the present embodiment, in the pushing device 70, the screw shaft 100 of the transmission mechanism 86 and the pushing member 110 are connected by the screw mechanism, but the connection between the transmitting mechanism 86 and the pushing member 110 is It is not limited to this. For example, in the transmission mechanism 86, a cam may be provided in place of the screw shaft 100, the transmission mechanism 86 and the pushing member 110 may be connected by the cam mechanism, and the pushing member 110 may be moved between the retracted position and the pushing position. Good too.

Further, in the door device 10 of the present embodiment, the extrusion device 70 is arranged at the left end of the door 12, but the position of the extrusion device 70 is not limited to this. For example, the extrusion device 70 may be located at the upper end of the door 12.

10 Door device 12 Door 14 Door frame 16 Striker 20 Open/close sensor (open/close detector)
30 Latch device 48 Lever detection switch (latch release detection section)
70 Extrusion device 80 Extrusion motor (motor)
110 Push-out member 120 Retraction position switch (retraction position detection section)
122 Extrusion position switch (extrusion position detection section)
124 Control section

Claims (3)

a door that is openably and closably connected to a door frame of a building and closes the door frame;
Provided inside the door, when the door is closed, it removably engages with a striker provided on the door frame to latch the door, and when activated releases the latch on the door. a latch device that
a latch release detection unit that detects release of the latch of the latch device with respect to the door;
an extrusion member provided inside the door and configured to be movable from a retracted position to an extrusion position; a motor driven by a control unit to move the extrusion member; and a detection of movement of the extrusion member to the extrusion position. an extrusion position detection section that detects movement of the extrusion member to a retraction position; a pushing device that comes into contact with the door frame and pushes out the door in the opening direction;
Equipped with
After the latch release detection unit detects the latch release of the latch device with respect to the door, the control unit drives the motor to move the push-out member from the retracted position to the push-out position,
If the push-out member does not move to the push-out position within a specific time from when the motor starts driving, the control section drives the motor to move the push-out member to the retracted position. The door device according to claim 1, wherein after the pushing member moves to the pushing position, the control section drives the motor to move the pushing member from the pushing position to the retracted position. The door is provided with an opening/closing detection section that detects opening/closing of the door,
When the door is opened after the motor starts driving and before the pushing member moves to the pushing position, the control unit drives the motor to move the pushing member to the retracted position, or The door device according to claim 1 or 2, wherein the control section stops driving the motor to maintain the pushing member at the retracted position.

Images