JP7752080B2 - Automatic door system - Google Patents

Description

The present invention relates to an automatic door system.

Automatic door systems with electric locks for locking the door are known. For example, Patent Document 1 describes an automatic door system equipped with an autolock device that locks the automatic door by engaging the lock shaft of the autolock main body with a key receiving device held by the automatic door.

JP 2019-39298 A

In automatic door systems like the one described above, the lock shaft is locked onto a key receiving section that moves with the automatic door system, which makes the autolock body and key receiving device complex in configuration, potentially increasing the number of manufacturing steps and costs required to manufacture the autolock system.

In consideration of the above circumstances, one aspect of the automatic door system of the present invention aims to provide an automatic door system that can reduce the number of steps and manufacturing costs for the locking unit by simplifying the configuration of the locking unit.

One aspect of the automatic door system of the present invention comprises a door section that is movable in the opening and closing direction, a door drive unit connected to the door section and moving the door section in the opening and closing direction, and a locking unit that locks the door section. The door drive unit has a drive pulley that is rotatable about a drive axis extending in a first direction perpendicular to the opening and closing direction, a driven pulley that is rotatable about a driven axis extending in the first direction, and an annular drive member that is wound around the drive pulley and the driven pulley. The driven pulley is disposed on one side of the drive pulley in the opening and closing direction and rotates in response to the drive pulley via the drive member. The locking unit is rotatable in the opening and closing direction and the The locking device has a lever member having a lever rotation axis extending in a second direction perpendicular to both of the first directions and rotatable around the lever rotation axis, and a lever driver that rotates the lever member around the lever rotation axis. The driven pulley has a plurality of inwardly recessed grooves along its outer peripheral surface, and the lever member has a fixed part that is positioned on the other side of the driven pulley in the opening and closing direction and can be inserted into the grooves. The lever driver rotates the lever member around the lever rotation axis, and the state of the locking part can be switched between a locked state in which the fixed part is inserted into the grooves and an unlocked state in which the fixed part is separated from the grooves.

The lever member may have a lever base having the lever rotation shaft and a connecting portion that protrudes in the second direction from one side of the lever rotation shaft in the first direction, the locking portion may have a frame portion that houses the lever base and the lever drive portion, the driven pulley is disposed on the other side of the frame portion in the first direction, the lever rotation shaft is connected to the frame portion, and the lever drive portion may have a solenoid actuator that moves a magnetic member connected to the connecting portion toward the other side in the opening/closing direction, and a spring member that has one end connected to the connecting portion and the other end connected to the frame portion and pulls the connecting portion toward one side in the opening/closing direction, and the solenoid actuator may be configured to place the locking portion in the locked state when power is supplied and to place the locking portion in the unlocked state when power is not supplied.

The lever member may have a holding portion extending from the lever base to the other side in the first direction and holding the fixed portion, the holding portion having an elongated hole penetrating in the opening/closing direction and extending in the second direction, the fixed portion passing through the elongated hole, and the position of the fixed portion relative to the holding portion may be changed in the second direction.

When the door section moves in the opening direction, the driven pulley rotates to one side in the circumferential direction around the driven shaft, and the locking section may have a first restricting member fixed to the frame section, and the first restricting member may be arranged on one side of the lever member in the circumferential direction, facing the lever member.

According to one aspect of the present invention, by simplifying the configuration of the locking unit in an automatic door system, the number of steps and manufacturing costs for the locking unit can be reduced.

1 is a front view showing an automatic door system according to an embodiment of the present invention; 2 is a cross-sectional view taken along line II-II in FIG. 1 showing an automatic door system according to an embodiment of the present invention. 3 is a cross-sectional view taken along the line III-III in FIG. 2, showing the locked state of the locking unit of the automatic door system according to the embodiment. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, showing the unlocked state of the locking unit of the automatic door system according to the embodiment. FIG. FIG. 4 is a side view illustrating a first restricting member according to an embodiment. 10 is a front view showing a part of the locking portion and the driven pulley when the fixed portion and the groove portion of the embodiment are engaged with each other. FIG. 10 is a front view showing a part of the locking portion and the driven pulley when the fixed portion and the groove portion do not mesh with each other in one embodiment. FIG. 10 is a front view showing a part of the locking unit and the driven pulley after the position of the fixing unit has been adjusted in one embodiment. FIG. FIG. 10 is a cross-sectional view showing an unlocked state of a locking unit of an automatic door system according to a modified example of an embodiment.

An automatic door system 1 according to an embodiment of the present invention will now be described with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiment, and can be modified as desired within the scope of the technical concept of the present invention. In addition, in the drawings below, the scale and number of components may differ from the actual structure in order to make each component easier to understand.

In the following explanation, the figures will appropriately show the XYZ coordinate system as a three-dimensional Cartesian coordinate system. In the XYZ coordinate system, the Z axis direction is the vertical direction. The +Z side is the upper vertical side, and the -Z side is the lower vertical side. In the following explanation, the upper vertical side will simply be referred to as the "upper side," and the lower vertical side will simply be referred to as the "lower side."

The X-axis direction is perpendicular to the Z-axis direction and is the opening/closing direction in which the door section 2 of the automatic door system 1 shown in Figure 1 opens and closes. In the following embodiments, the +X side is the right side of the automatic door system 1, and the -X side is the left side of the automatic door system 1. In the following explanation, the right side of the automatic door system 1 will be simply referred to as the "right side" or "one side in the opening/closing direction," and the left side of the automatic door system 1 will be simply referred to as the "left side" or "other side in the opening/closing direction."

The Y-axis direction is perpendicular to both the X-axis and Z-axis directions, and is the front-to-rear direction of the automatic door system 1. In the following embodiments, the +Y side is the front side of the automatic door system 1, and the -Y side is the rear side of the automatic door system 1. In the following explanation, the front side of the automatic door system 1 will be simply referred to as the "front side," and the rear side of the automatic door system 1 will be simply referred to as the "rear side." The opening/closing direction and the front-to-rear direction are horizontal directions perpendicular to the vertical direction. Note that the terms upper side, lower side, right side, left side, front side, and rear side are simply names used to describe the relative positional relationships of each part, and the actual layout may be different from those indicated by these names.

Figure 1 is a front view of the automatic door system of this embodiment. Figure 2 is a cross-sectional view of the automatic door system of this embodiment taken along the line II-II in Figure 1.

Figure 1 is a front view of an automatic door system 1 according to this embodiment. Note that Figure 1 shows the double-swing door section 2 in a closed state. The automatic door system 1 according to this embodiment is installed in a passageway 80 inside a building or the like. The passageway 80 is surrounded by a ceiling 81, a right wall 82, a left wall 83, and a floor 84. The automatic door system 1 according to this embodiment is a double-swing automatic door system in which the door section 2 opens and closes in the opening/closing direction (X-axis direction). The automatic door system 1 includes a door frame 5, an upper rail 7, a storage section 9, the door section 2, a first fixed wall 3a, a second fixed wall 3b, a control section 50, a door drive section 10, and a locking section 20.

The door frame 5 is a frame body that is approximately rectangular when viewed in the front-to-rear direction (Y-axis direction). As shown in Figure 2, the front (+Y side) end of the door frame 5 is located forward of the door section 2. As shown in Figure 1, the door frame 5 holds the storage section 9, the door section 2, the first fixed wall 3a, and the second fixed wall 3b. The door frame 5 has a right side section 5a, a left side section 5b, an upper side section 5c, and a lower rail 5d.

The right side portion 5a is columnar and extends vertically (in the Z-axis direction). The right side portion 5a is fixed to the right wall surface 82. The lower end of the right side portion 5a is embedded in the floor surface 84.

The left side portion 5b is columnar and extends vertically (in the Z-axis direction). The left side portion 5b is fixed to the left wall surface 83. The lower end of the left side portion 5b is embedded in the floor surface 84.

The upper portion 5c is columnar and extends in the opening/closing direction (X-axis direction). The upper portion 5c is fixed to the top surface 81. The right end (+X side) of the upper portion 5c is connected to the upper end of the right portion 5a. The left end (-X side) of the upper portion 5c is connected to the upper end of the left portion 5b.

The lower rail 5d is a rail that extends in the opening/closing direction (X-axis direction). The lower rail 5d is open to the top and has a groove-shaped recess that extends in the opening/closing direction (X-axis direction). The lower rail 5d is embedded in the floor surface 84. The right-side (+X side) end of the lower rail 5d is connected to the lower end of the right-side section 5a. The left-side (-X side) end of the lower rail 5d is connected to the lower end of the left-side section 5b.

The upper rail 7 is a rail that extends in the opening/closing direction (X-axis direction). The upper rail 7 opens upward and has a groove-shaped recess that extends in the opening/closing direction (X-axis direction). In the vertical direction (Z-axis direction), the upper rail 7 is located above the door section 2 and below the upper section 5c. The right side (+X side) end of the upper rail 7 is connected to the right side section 5a. The left side (-X side) end of the upper rail 7 is connected to the left side section 5b.

The storage unit 9 is a roughly rectangular box-shaped unit extending in the opening/closing direction (X-axis direction). The storage unit 9 is located above the upper rail 7. The storage unit 9 is fixed to the front surface of a cross beam provided on the top surface 81. The storage unit 9 contains the control unit 50, door drive unit 10, and locking unit 20.

As shown in FIG. 1, the door section 2 is a double-door that opens and closes in the opening and closing direction (X-axis direction). The door section 2 is movable in the opening and closing direction (X-axis direction). The door section 2 has a first door 2a, a pair of first door hangers 2c, a first connecting portion 2e, a first connecting member 2f, a second door 2b, a pair of second door hangers 2d, a second connecting portion 2g, and a second connecting member 2h.

The first door 2a and the second door 2b are in the shape of a roughly rectangular plate. The plate surfaces of the first door 2a and the second door 2b face the front-to-rear direction (Y-axis direction). When the first door 2a moves to the left (-X side) and the second door 2b moves to the right (+X side), the door section 2 opens; when the first door 2a moves to the right and the second door 2b moves to the left, the door section 2 closes.

Each of the pair of first door hangers 2c is fixed to the upper end of the first door 2a with a bolt. Each of the pair of first door hangers 2c can move along the upper rail 7 in the opening/closing direction (X-axis direction). The pair of first door hangers 2c are arranged side by side in the opening/closing direction. In addition, the lower end of the first door 2a is provided with a guide portion (not shown) that is inserted into a recess in the lower rail 5d. This allows the first door 2a to move in the opening/closing direction.

As shown in FIG. 1, the first connecting portion 2e connects a pair of first door hangers 2c in the opening/closing direction (X-axis direction). The first connecting portion 2e is columnar and extends in the opening/closing direction. The right-hand end (+X side) of the first connecting portion 2e is connected to the first door hanger 2c located on the right side. The left-hand end (-X side) of the first connecting portion 2e is connected to the first door hanger 2c located on the left side.

The first connecting member 2f is a plate-like member that protrudes upward from the first connecting portion 2e. The plate surface of the first connecting member 2f faces the front-to-rear direction (Y-axis direction). The lower end of the first connecting member 2f is fixed to the first connecting portion 2e. The upper portion of the first connecting member 2f is connected to the lower portion 14c of the drive member 14, which will be described later.

Each of the pair of second door hangers 2d is fixed to the upper end of the second door 2b with a bolt. Each of the pair of second door hangers 2d can move along the upper rail 7 in the opening/closing direction (X-axis direction). The pair of second door hangers 2d are arranged side by side in the opening/closing direction. In addition, the lower end of the second door 2b is provided with a guide portion (not shown) that is inserted into a recess in the lower rail 5d. This allows the second door 2b to move in the opening/closing direction.

As shown in FIG. 1, the second connecting portion 2g connects a pair of second door hangers 2d in the opening/closing direction (X-axis direction). The second connecting portion 2g is columnar and extends in the opening/closing direction. The right-hand end (+X side) of the second connecting portion 2g is connected to the second door hanger 2d located on the right side. The left-hand end (-X side) of the second connecting portion 2g is connected to the second door hanger 2d located on the left side.

The second connecting member 2h is a plate-like member that protrudes upward from the second connecting portion 2g. The plate surface of the second connecting member 2h faces the front-to-rear direction (Y-axis direction). The lower end of the second connecting member 2h is fixed to the second connecting portion 2g. The upper portion of the second connecting member 2h is connected to the upper portion 14d of the drive member 14, which will be described later.

When the door section 2 is closed, the first fixed wall 3a blocks the interior of the door frame 5 to the left (-X side) of the first door 2a. The first fixed wall 3a is a roughly rectangular plate. The plate surface of the first fixed wall 3a faces the front-to-rear direction (Y-axis direction). The left end of the first fixed wall 3a is fixed to the left side section 5b. The upper end of the first fixed wall 3a is fixed to the upper rail 7. The lower end of the first fixed wall 3a is fixed to the lower rail 5d. The right end (+X side) of the first fixed wall 3a is located to the right of the left end of the first door 2a when closed.

When the door section 2 is closed, the second fixed wall 3b blocks the portion of the interior of the door frame 5 to the right (+X side) of the second door 2b. The second fixed wall 3b is a roughly rectangular plate. The plate surface of the second fixed wall 3b faces the front-to-rear direction (Y-axis direction). The right end of the second fixed wall 3b is fixed to the right section 5a. The upper end of the second fixed wall 3b is fixed to the upper rail 7. The lower end of the second fixed wall 3b is fixed to the lower rail 5d. The left end (-X side) of the second fixed wall 3b is located to the left of the right end of the second door 2b when closed.

The control unit 50 is a control device that controls each component of the door drive unit 10 and each component of the locking unit 20. As shown in Figure 1, the control unit 50 is a rectangular box that houses a CPU, ROM, and other components (not shown). The CPU, ROM, and other components are configured as a computer system. The control unit 50 is located in approximately the center of the storage unit 9 in the opening/closing direction (X-axis direction).

The door drive unit 10 moves the door section 2 in the opening/closing direction (X-axis direction). As shown in FIG. 1, the door drive unit 10 is housed inside the housing section 9. As shown in FIG. 2, the door drive unit 10 is located in the front (+Y side) portion of the housing section 9. As shown in FIG. 1, the door drive unit 10 has a drive unit 11, a drive pulley 12, a driven pulley 13, and a drive member 14.

The drive unit 11 rotates the drive pulley 12. In this embodiment, the drive unit 11 is located on the left side (-X side) of the housing 9. The drive unit 11 has a drive motor (not shown), a reduction mechanism, and the drive pulley 12. The drive motor is electrically connected to the control unit 50, and the operation of the drive motor is controlled by the control unit 50. The rotational torque of the drive motor is transmitted to the drive pulley 12 via the reduction mechanism. The configuration of the drive motor and the reduction mechanism is not particularly limited, and any known motor and reduction mechanism can be used.

As shown in FIG. 1, the drive pulley 12 is rotatable about a drive axis J2 extending in a first direction D1 perpendicular to the opening/closing direction (X-axis direction). In this embodiment, the drive axis J2 is an imaginary axis. As described above, the rotational torque of the drive motor is transmitted to the drive pulley 12 via a reduction mechanism. The drive pulley 12 has a drive shaft 12a and a first annular portion 12b.

The drive shaft 12a is cylindrical and extends in the first direction D1 around the drive axis J2. In this embodiment, the drive shaft 12a extends in the front-to-rear direction (Y-axis direction). Therefore, in this embodiment, the first direction D1 is parallel to the front-to-rear direction. The drive shaft 12a is supported by a bearing member (not shown) so that it can rotate around the drive axis J2.

The first annular portion 12b is annular and centered on the drive axis J2. The inner circumferential surface of the first annular portion 12b is connected to the outer circumferential surface of the drive shaft 12a. The outer circumferential surface of the first annular portion 12b is provided with second grooves (not shown) that are recessed inward. Multiple second grooves are provided at equal intervals along the outer circumferential surface of the first annular portion 12b.

Note that the first direction D1 is shown in each figure where appropriate. As mentioned above, in this embodiment, the first direction D1 is a direction parallel to the front-to-rear direction (Y-axis direction). Note that the first direction D1 does not have to be a direction parallel to the front-to-rear direction. In the following description, the side toward which the arrow of the first direction D1 (+D1 side) shown in each figure points will be referred to as "one side of the first direction" or "rear side," and the side opposite to the side toward which the arrow of the first direction D1 (-D1 side) points will be referred to as "the other side of the first direction" or "front side."

The second direction D2 is also shown in each figure where appropriate. The second direction D2 is a direction perpendicular to both the opening/closing direction (X-axis direction) and the first direction D1. In this embodiment, the second direction D2 is a direction parallel to the vertical direction (Z-axis direction). Note that the second direction D2 does not have to be a direction parallel to the vertical direction. In the following description, the side toward which the arrow of the second direction D2 (+D2 side) shown in each figure points will be referred to as "one side of the second direction" or "upper side," and the side opposite to the side toward which the arrow of the second direction D2 (-D2 side) points will be referred to as "the other side of the second direction" or "lower side."

As shown in FIG. 1, the driven pulley 13 is located on the right side (+X side) of the housing section 9. The driven pulley 13 is located to the right of the drive pulley 12, i.e., on one side (+X side) in the opening and closing direction. The driven pulley 13 is rotatable about a driven axis J3 that is parallel to the first direction D1.

In the following description, the direction parallel to the driven axis J3 will be referred to simply as the "driven axial direction," the radial direction centered on the driven axis J3 will be referred to simply as the "driven radial direction," and the circumferential direction centered on the driven axis J3, i.e., around the driven axis J3, will be referred to simply as the "driven circumferential direction." In this embodiment, the driven axial direction is a direction parallel to the first direction D1 and the front-to-rear direction (Y-axis direction). The driven circumferential direction is indicated by arrow θ3 in each drawing. The side of the driven circumferential direction toward which arrow θ3 points will be referred to as "one side of the driven circumferential direction." The side of the driven circumferential direction opposite to the side toward which arrow θ3 points will be referred to as "the other side of the driven circumferential direction." The one side of the driven circumferential direction is the side that moves clockwise around the driven axis J3 when viewed from the front side (+Y side). The other side of the driven circumferential direction is the side that moves counterclockwise around the driven axis J3 when viewed from the front side (+Y side).

Figure 3 is a cross-sectional view taken along III-III in Figure 2, showing the locking section of the automatic door system of this embodiment in a locked state. Figure 4 is a cross-sectional view taken along III-III in Figure 2, showing the locking section of the automatic door system of this embodiment in an unlocked state. Figure 5 is a side view showing the first restricting member of this embodiment. Figure 6 is a front view showing a portion of the locking section and driven pulley when the fixed portion and groove portion of this embodiment are engaged.

As shown in Figure 3, the driven shaft 13a is generally cylindrical and extends in the first direction D1 around the driven axis J3. The outer peripheral surface of the rear end (+D1 side) of the driven shaft 13a is fixed to the frame portion 21 of the locking unit 20, which will be described later.

As shown in FIG. 6, the driven pulley 13 is substantially annular and centered on the driven axis J3. The inner peripheral surface of the driven pulley 13 is in rotatable contact with the outer peripheral surface of the driven shaft 13a. Therefore, the driven pulley 13 can rotate about the driven axis J3. The driven pulley 13 can also rotate about the driven shaft 13a. The outer peripheral surface of the driven pulley 13 is provided with grooves 13c that are recessed inward. In this embodiment, multiple grooves 13c are provided at equal intervals along the outer peripheral surface of the driven pulley 13.

The drive member 14 is a circular timing belt driven by the drive unit 11. As shown in FIG. 1, the drive member 14 is arranged along the opening/closing direction (X-axis direction). The drive member 14 is wrapped around the drive pulley 12 and the driven pulley 13. As shown in FIG. 6, the inner circumferential surface of the drive member 14 is provided with inwardly protruding protrusions 14a. In this embodiment, multiple protrusions 14a are provided at equal intervals along the inner circumferential surface of the drive member 14. Some of the multiple protrusions 14a mesh with multiple second grooves (not shown) of the drive pulley 12. As a result, when the drive pulley 12 rotates about the drive axis J2, the drive member 14 is driven in the opening/closing direction (X-axis direction). As shown in FIG. 6, other portions of the multiple protrusions 14a mesh with multiple grooves 13c of the driven pulley 13. As a result, the driven pulley 13 rotates in conjunction with the drive pulley 12 via the drive member 14.

As shown in FIG. 1, a first connecting member 2f is connected to the lower portion 14c of the drive member 14, which is located below (on the -D2 side of) the drive shaft 12a. A second connecting member 2h is connected to the upper portion 14d of the drive member 14, which is located forward (on the -D2 side of) the drive shaft 12a. These components connect the door drive unit 10 to the door section 2. Therefore, when the drive pulley 12 rotates in the direction of arrow A, the first door 2a moves to the left (-X side) and the second door 2b moves to the right (+X side), opening the door section 2. At this time, the driven pulley 13 rotates toward one side of the driven circumferential direction (the +θ3 side). In other words, when the door section 2 moves in the opening direction, the driven pulley 13 rotates toward one side of the driven circumferential direction. On the other hand, when the drive pulley 12 rotates in the direction of arrow B, the first door 2a moves to the right (+X side) and the second door 2b moves to the left (-X side), closing the door section 2. At this time, the driven pulley 13 rotates toward the other side in the driven circumferential direction (-θ3 side).

The locking unit 20 locks the door unit 2. More specifically, when the door unit 2 is closed, the locking unit 20 locks the door unit 2 by restricting rotation of the driven pulley 13. As shown in FIG. 1, the locking unit 20 is located on the right side (+X side) of the storage unit 9. As shown in FIG. 2, the locking unit 20 is located behind the driven pulley 13 (+D1 side). As shown in FIG. 3, the locking unit 20 includes a frame unit 21, a lever member 22, a lever driver 30, a rotation stopper member 27, a detector 28, and a second restricting member 29. As shown in FIG. 5, the locking unit 20 also includes a first restricting member 26.

As shown in FIG. 3, the frame portion 21 is box-shaped and extends in the opening/closing direction (X-axis direction). As shown in FIG. 5, the frame portion 21 opens downward (-D2 side). Note that the frame portion 21 does not have to open downward. As shown in FIG. 3, the frame portion 21 is disposed on the rear side (+D1 side) of the driven pulley 13. The frame portion 21 houses a portion of the lever member 22, the lever drive unit 30, the rotation stop member 27, and the detection unit 28. As shown in FIG. 5, a first restriction member 26 is fixed to the outer surface of the frame portion 21. Furthermore, as shown in FIG. 3, a second restriction member 29 is fixed to the outer surface of the frame portion 21. The frame portion 21 has a fixed plate-shaped portion 21a and a box-shaped portion 21b.

The fixed plate portion 21a is plate-shaped and extends in the opening/closing direction (X-axis direction). When viewed in the first direction D1, the fixed plate portion 21a is approximately rectangular. The plate surface of the fixed plate portion 21a faces the first direction D1. The fixed plate portion 21a is fixed to the storage portion 9. This fixes the locking portion 20 to the storage portion 9.

The box-shaped portion 21b is box-shaped and extends in the opening/closing direction (X-axis direction). As shown in Figure 5, the box-shaped portion 21b is open on the bottom side (-D2 side). As shown in Figure 3, the rear end (+D1 side) of the box-shaped portion 21b is connected to the fixed plate portion 21a. The box-shaped portion 21b has an upper wall portion 21c, a front wall portion 21d, a left side wall portion 21e, and a right side wall portion 21f.

As shown in Figure 5, the upper wall portion 21c is a plate extending rearward (toward +D1) from the fixed plate portion 21a. The plate surface of the upper wall portion 21c faces the second direction D2. Although not shown, the upper wall portion 21c has a generally rectangular shape when viewed in the second direction D2. The upper wall portion 21c is the portion of the box-shaped portion 21b that is located on the front side (toward +D2). Note that the upper wall portion 21c is not shown in Figures 3 and 4.

As shown in FIG. 5, the front wall portion 21d is plate-shaped and extends downward (toward the -D2 side) from the rear end (+D1 side) of the upper wall portion 21c. The plate surface of the front wall portion 21d faces the first direction D1. Although not shown, the front wall portion 21d has a substantially rectangular shape when viewed in the first direction D1. The front wall portion 21d is the portion of the box-shaped portion 21b that is located on one side in the first direction D1. A hole 21g is provided in the front wall portion 21d.

As shown in FIG. 3, hole 21g is a hole that penetrates front wall 21d in first direction D1. When viewed in first direction D1, hole 21g is rectangular. In the opening/closing direction (X-axis direction), at least a portion of hole 21g is located to the left (-X side) of driven pulley 13.

As shown in Figure 3, the left side wall 21e is a plate-like member that protrudes forward (towards the -D1 side) from the left side (-X side) of the fixed plate-like portion 21a. The plate surface of the left side wall 21e faces the opening/closing direction (X-axis direction). When viewed in the opening/closing direction, the left side wall 21e is approximately rectangular. The left side wall 21e is the portion of the box-shaped portion 21b that is located on the left side. Although not shown in the figure, the front end (+D2 side) of the left side wall 21e is connected to the left end of the upper wall 21c.

The right side wall portion 21f is a plate-like portion that protrudes forward (towards -D1) from the right side (+X side) of the fixed plate portion 21a. The plate surface of the right side wall portion 21f faces the opening/closing direction (X-axis direction). When viewed in the opening/closing direction, the right side wall portion 21f is approximately rectangular. The right side wall portion 21f is the portion of the box-shaped portion 21b that is located on the right side. Although not shown in the figure, the front end (+D2 side) of the right side wall portion 21f is connected to the right end of the upper wall portion 21c.

As shown in FIG. 3 , the lever member 22 is a member extending in the first direction D1. The lever member 22 suppresses rotation of the driven pulley 13. The lever member 22 is rotated around a lever rotation axis 23b (described below) by the lever driver 30. The lever member 22 has a lever base 23, a holding portion 24, and a fixed portion 25.

The lever base 23 is the rear (+D1 side) portion of the lever member 22. The lever base 23 is housed inside the frame portion 21. The lever base 23 is rotatably held by the frame portion 21. The lever base 23 has a main body portion 23a, a lever rotation shaft 23b, a connecting portion 23c, and a protrusion 23f.

As shown in Figures 3 and 5, the main body 23a is approximately rectangular. When viewed in the opening/closing direction (X-axis direction), the front end (-D1 side) of the main body 23a overlaps with the hole 21g. Two of the outer surfaces of the main body 23a face the first direction D1. The other two of the outer surfaces of the main body 23a face the second direction D2. As shown in Figure 3, the outer surface of the main body 23a facing the right side (+X side) is the first outer surface 23e. The main body 23a is provided with a first through hole 23k, a second through hole 23m, and a third through hole 23n.

As shown in FIG. 5, the first through hole 23k is a circular hole that extends in the second direction D2 around the rotation axis J1. The first through hole 23k is a hole that penetrates the main body portion 23a in the second direction D2. As shown in FIG. 3, the first through hole 23k is provided on the front edge (-D1 side) of the main body portion 23a.

As shown in FIG. 5, the second through hole 23m is a hole that penetrates the main body portion 23a in the second direction D2. As shown in FIG. 3, the second through hole 23m is circular when viewed in the second direction D2. The second through hole 23m is provided in the main body portion 23a, rearward (toward +D1) of the first through hole 23k.

As shown in FIG. 3, the third through hole 23n is a hole that penetrates the main body 23a in the opening/closing direction (X-axis direction). When viewed in the second direction D2, the third through hole 23n overlaps with the second through hole 23m. In other words, the interior of the third through hole 23n is connected to the interior of the second through hole 23m. As shown in FIG. 5, the third through hole 23n is rectangular when viewed in the opening/closing direction (X-axis direction).

The lever rotation shaft 23b is cylindrical and extends in the second direction D2 around the rotation axis J1. The lever rotation shaft 23b passes through the first through-hole 23k in the second direction D2. The front (+D2 side) end of the lever rotation shaft 23b is supported by the upper wall portion 21c so that it can rotate around the rotation axis J1. In other words, the lever rotation shaft 23b is connected to the frame portion 21. The lower (-D2 side) end of the lever rotation shaft 23b protrudes downward from the lever base 23. A nut 92 is fixed to the lower end of the lever rotation shaft 23b. The nut 92 is in contact with the main body portion 23a. This determines the position of the lever base 23 relative to the frame portion 21 in the second direction D2. The outer surface of the lever rotation shaft 23b is fixed to the inner surface of the first through-hole 23k. This allows the lever base 23 to rotate around the rotation axis J1. In other words, the lever member 22 can rotate around the lever rotation axis 23b.

In the following description, the direction parallel to the rotation axis J1 will be referred to simply as the "rotation axis direction," the radial direction centered on the rotation axis J1 will be referred to simply as the "rotation axis radial direction," and the circumferential direction centered on the rotation axis J1, i.e., around the axis of the lever rotation axis 23b, will be referred to simply as the "rotation axis circumferential direction." In this embodiment, the rotation axis direction is parallel to the second direction D2 and the vertical direction (Z-axis direction). The rotation axis circumferential direction is indicated by arrow θ1 in each drawing. The side of the rotation axis circumferential direction toward which the arrow θ1 points will be referred to as "one side of the rotation axis circumferential direction." The side of the rotation axis circumferential direction opposite to the side toward which the arrow θ1 points will be referred to as "the other side of the rotation axis circumferential direction." The one side of the rotation axis circumferential direction is the side that moves counterclockwise around the rotation axis J1 when viewed from the front side (+D2 side). The other side of the rotation axis circumferential direction is the side that moves clockwise around the rotation axis J1 when viewed from the front side (+D2 side).

As shown in FIG. 5, the connecting portion 23c has a cylindrical shape that protrudes in the second direction D2. The connecting portion 23c passes through the second through hole 23m in the second direction D2. A portion of the connecting portion 23c passes through the inside of the third through hole 23n in the second direction D2. The connecting portion 23c is fixed to the main body portion 23a. As shown in FIG. 3, the connecting portion 23c is located rearward of the lever rotation axis 23b, i.e., on one side in the first direction (+D1 side).

The protrusion 23f is a generally rectangular parallelepiped that protrudes to the right (+X side) from the rear (+D1 side) of the main body 23a. Of the outer surfaces of the protrusion 23f, the surface facing the right side is the second outer surface 23g.

As shown in FIG. 3, the holding portion 24 extends forward from the lever base 23, i.e., toward the other side in the first direction (-D1 side). The holding portion 24 holds the fixed portion 25. The holding portion 24 has a connecting portion 24a and a holding main body portion 24b.

The connecting portion 24a connects the lever base 23 and the holding body portion 24b. The connecting portion 24a is a columnar member. As shown in FIG. 5, the dimension of the connecting portion 24a in the second direction D2 is smaller than the dimension of the body portion 23a. As shown in FIG. 3, the connecting portion 24a has a first connecting portion 24a1, a second connecting portion 24a2, and a third connecting portion 24a3.

The first connection portion 24a1 is columnar and extends forward (toward the -D1 side) from the main body portion 23a. The rear end (toward the +D1 side) of the first connection portion 24a1 is connected to the main body portion 23a. The front end of the first connection portion 24a1 is located rearward of the driven pulley 13.

The second connection portion 24a2 is columnar and extends from the front end (-D1 side) of the first connection portion 24a1 to the left (-X side). The left end of the second connection portion 24a2 is located to the left of the driven pulley 13.

The third connection portion 24a3 is columnar and extends from the left (-X side) end of the second connection portion 24a2 to the front (-D1 side). The front end of the third connection portion 24a3 is located to the left of the driven pulley 13.

The holding body portion 24b holds the fixed portion 25. As shown in FIG. 3, the holding body portion 24b is a rectangular parallelepiped extending forward from the front (-D1 side) end of the third connection portion 24a3. The two outer surfaces of the holding body portion 24b face the opening/closing direction (X-axis direction). The holding body portion 24b is located on the left side (-X side) of the driven pulley 13. As shown in FIGS. 3 and 5, when viewed in the opening/closing direction (X-axis direction), the holding body portion 24b overlaps with the driven pulley 13. As shown in FIG. 6, in the second direction D2, the holding body portion 24b is positioned between the lower portion 14c and upper portion 14d of the drive member 14. A long hole 24d is provided in the holding body portion 24b.

As shown in FIG. 3, the elongated hole 24d is a hole that penetrates the holding body portion 24b in the opening/closing direction (X-axis direction). As shown in FIG. 5, the elongated hole 24d is a hole that extends in the second direction D2. As shown in FIG. 3, the fixing portion 25 is passed through the elongated hole 24d in the opening/closing direction.

The fixed portion 25 is generally cylindrical and protrudes in the opening/closing direction (X-axis direction). The fixed portion 25 is located on the left side of the driven pulley 13, i.e., on the other side (-X side) in the opening/closing direction. As shown in Figure 6, the fixed portion 25 is located between the lower portion 14c and upper portion 14d of the drive member 14 in the second direction D2. As shown in Figure 3, the fixed portion 25 has a shaft portion 25a and a head portion 25b.

The shaft portion 25a is generally cylindrical and protrudes in the opening/closing direction (X-axis direction). The shaft portion 25a passes through the elongated hole 24d in the opening/closing direction. The right (+X side) end of the shaft portion 25a protrudes to the right from the holding body portion 24b and faces the driven pulley 13 in the opening/closing direction. The left (-X side) end of the shaft portion 25a protrudes to the left from the holding body portion 24b. A male thread (not shown) is provided on the outer surface of the shaft portion 25a. A nut 93 is tightened toward the left on the portion of the shaft portion 25a to the right of the holding body portion 24b. Furthermore, a nut 94 is tightened toward the right on the portion of the shaft portion 25a to the left of the holding body portion 24b. As a result, the fixing portion 25 is held by the holding portion 24.

The head 25b is cylindrical and protrudes to the right (+X side) from the shaft 25a. As shown in FIG. 6, the outer diameter of the head 25b is smaller than the dimension of the groove 13c in the driven circumferential direction. Therefore, the head 25b can be inserted into the groove 13c. That is, the lever member 22 has a fixing portion 25 that can be inserted into the groove 13c. When the head 25b is inserted into the groove 13c, rotation of the driven pulley 13 around the driven shaft 13a is restricted. As a result, the locking unit 20 enters a locked state, restricting movement of the door section 2 in the opening/closing direction (X-axis direction) via the door drive unit 10 including the driven pulley 13. In other words, the locking unit 20 can lock the door section 2. Furthermore, when the head 25b is separated from the groove 13c, the driven pulley 13 can rotate around the driven shaft 13a. As a result, the locking unit 20 enters an unlocked state, allowing the door drive unit 10, including the driven pulley 13, to move the door unit 2 in the opening and closing direction (X-axis direction). In other words, the locking unit 20 can unlock the door unit 2.

Figure 7 is a front view showing a portion of the locking unit and driven pulley when the fixed portion and groove of this embodiment do not mesh. Figure 8 is a front view showing a portion of the locking unit and driven pulley after adjusting the position of the fixed portion of this embodiment.

In this embodiment, as described above, the fixing portion 25 is inserted through the elongated hole 24d of the holding body portion 24b in the opening/closing direction (X-axis direction). Furthermore, as described above, the elongated hole 24d is a hole extending in the second direction D2. Therefore, the position of the fixing portion 25 relative to the holding portion 24 can be changed in the second direction D2. Therefore, the position of the fixing portion 25 relative to the driven pulley 13 can be changed in the second direction D2. The position of the groove 13c of the driven pulley 13 in the driven circumferential direction when the door portion 2 is closed varies from automatic door device 1 to automatic door device 1 due to variations in the mounting positions of the drive unit 11, drive pulley 12, and driven pulley 13. Therefore, depending on the position of the groove 13c in the driven circumferential direction, as shown in FIG. 7, the head 25b of the fixing portion 25 may come into contact with the protrusion between the grooves 13c of the driven pulley 13, preventing the head 25b from being inserted into the groove 13c. However, with this embodiment, as shown in Figure 8, the position of the fixed part 25 in the second direction D2 can be adjusted so that the head part 25b can be inserted into the groove part 13c of the driven pulley 13. Therefore, even if the position of the groove part 13c in the driven circumferential direction differs for each automatic door device 1, the door part 2 can be locked by the locking part 20.

Furthermore, in this embodiment, the position at which the holding portion 24 holds the fixed portion 25 in the second direction D2 can be adjusted by simply providing the long hole 24d in the holding portion 24. This prevents an increase in the number of steps and manufacturing costs required to manufacture the locking unit 20. This prevents an increase in the number of steps and manufacturing costs required to manufacture the automatic door device 1.

The lever driver 30 rotates the lever member 22 around the lever rotation axis 23b, switching the locking unit 20 between a locked state and an unlocked state. As shown in Figure 3, the lever driver 30 is housed inside the frame unit 21. The lever driver 30 has a magnetic member 31, a solenoid actuator 32, and a spring member 33.

The magnetic member 31 is columnar and extends in the opening/closing direction (X-axis direction). The left side (-X side) of the magnetic member 31 is inserted into the solenoid actuator 32. The right side (+X side) of the magnetic member 31 is inserted into the third through-hole 23n of the lever base 23. The magnetic member 31 is movable in the opening/closing direction (X-axis direction). The magnetic member 31 is made of a magnetic material. The magnetic member 31 has a first shaft 31a, a flange 31b, and a second shaft 31c.

The first shaft portion 31a is cylindrical and extends in the opening/closing direction (X-axis direction). At least a portion of the first shaft portion 31a is disposed inside a hole portion 32a (described later) of the solenoid actuator 32. The flange portion 31b is disk-shaped. The plate surface of the flange portion 31b faces the opening/closing direction (X-axis direction). The flange portion 31b is connected to the right (+X-axis) end of the first shaft portion 31a. The outer diameter of the flange portion 31b is larger than the inner diameter of a hole portion 32a (described later) of the solenoid actuator 32.

As shown in FIG. 3, the second shaft portion 31c has a rectangular prism shape that protrudes to the right (+X side) from the flange portion 31b. The right portion of the second shaft portion 31c is inserted into the third through hole 23n. The second shaft portion 31c has a fourth through hole 31d. As shown in FIG. 5, the fourth through hole 31d is a hole that penetrates the second shaft portion 31c in the second direction D2. The connecting portion 23c passes through the fourth through hole 31d in the second direction D2. As shown in FIG. 3, the inner surface of the fourth through hole 31d and the outer surface of the connecting portion 23c are in contact with each other in the opening/closing direction (X-axis direction). In other words, the magnetic member 31 is connected to the connecting portion 23c.

The solenoid actuator 32 is located on the left side (-X side) of the lever base 23. The solenoid actuator 32 has a rectangular parallelepiped shape extending in the opening/closing direction (X-axis direction). In this embodiment, the solenoid actuator 32 is an electromagnetic solenoid. The solenoid actuator 32 is electrically connected to the control unit 50. The solenoid actuator 32 has a hole 32a. The hole 32a is a hole recessed from the surface of the solenoid actuator 32 facing the right side (+X side) toward the left side (-X side). Although not shown in the figure, the hole 32a is circular when viewed in the opening/closing direction. As described above, the first shaft 31a of the magnetic member 31 is inserted inside the hole 32a.

When the control unit 50 supplies power to the solenoid actuator 32, a magnetic field is generated inside the solenoid actuator 32, and a magnetic force directed to the left (-X side) is applied to the magnetic member 31. As described above, the magnetic member 31 is connected to the connecting portion 23c. Therefore, when power is supplied to the solenoid actuator 32, the connecting portion 23c is pulled to the left via the magnetic member 31. Note that when the control unit 50 stops the supply of power to the solenoid actuator 32, no magnetic force is applied to the magnetic member 31.

The spring member 33 applies a force to the connecting portion 23c toward the right (+X side). In this embodiment, the spring member 33 is a coil spring. As shown in FIG. 3 , one end of the spring member 33 is connected to the connecting portion 23c inside the third through-hole 23n. The other end of the spring member 33 is fixed to a bolt 97. The bolt 97 extends in the first direction D1. The rear end (+D1 side) of the bolt 97 is fixed to the fixed plate portion 21a by a nut 98. This causes the spring member 33 to pull the connecting portion 23c toward the right, i.e., toward one side in the opening/closing direction (+X side). Note that in this embodiment, the force with which the spring member 33 pulls the connecting portion 23c toward the right is smaller than the force with which the solenoid actuator 32 pulls the connecting portion 23c toward the left.

Therefore, when power is supplied to the solenoid actuator 32 by the control unit 50, as shown in FIG. 3, the lever base 23, including the connecting portion 23c, moves to the left (-X side) until the flange portion 31b contacts the surface of the solenoid actuator 32 facing the right side (+X side). This causes the lever member 22 to rotate around the lever rotation axis 23b toward one side (+θ1) in the circumferential direction of the rotation axis. At this time, the fixed portion 25 moves toward the right side (+X side), i.e., toward the driven pulley 13. Therefore, as shown in FIG. 6, the head portion 25b of the fixed portion 25 is inserted into the groove portion 13c of the driven pulley 13. This places the locking unit 20 in a locked state. In other words, the solenoid actuator 32 places the locking unit 20 in a locked state when power is supplied.

Furthermore, when the control unit 50 stops the supply of power to the solenoid actuator 32, the lever base 23, including the connecting portion 23c, moves to the right (+X side), as shown in FIG. 4. As a result, the lever member 22 rotates around the lever rotation axis 23b toward the other side (-θ1) in the circumferential direction of the rotation axis. At this time, the fixed portion 25 moves to the left (-X side), that is, in a direction away from the driven pulley 13. As a result, the head portion 25b of the fixed portion 25 moves away from the groove portion 13c of the driven pulley 13. This puts the locking unit 20 in an unlocked state. In other words, the solenoid actuator 32 puts the locking unit 20 in an unlocked state when power is not being supplied.

In other words, by switching the power supply to the solenoid actuator 32, the lever drive unit 30 can rotate the lever member 22 toward one side (+θ1 side) or the other side (-θ1 side) around the rotation axis, switching the state of the locking unit 20 between a locked state in which the fixed portion 25 is inserted into the groove 13c, and an unlocked state in which the fixed portion 25 is removed from the groove 13c.

The first restricting member 26 prevents the lever member 22 from deforming in the driven circumferential direction. As shown in FIG. 5, the first restricting member 26 is plate-shaped and protrudes rearward (toward +D1) from the frame portion 21. The first restricting member 26 is fixed to the frame portion 21. The first restricting member 26 has a first portion 26a and a second portion 26b.

The first portion 26a is disposed on the front side (+D2 side) of the lever member 22. When viewed in the opening/closing direction (X-axis direction), the first portion 26a is an L-shaped plate. The first portion 26a has an upper plate portion 26a1 and a side plate portion 26a2. The upper plate portion 26a1 is plate-shaped and extends in the first direction D1. The plate surface of the upper plate portion 26a1 faces the second direction D2. The upper plate portion 26a1 is fixed to the front-facing surface of the upper wall portion 21c by a bolt 95.

As shown in FIG. 5, the side plate portion 26a2 is a plate-like member that protrudes downward (toward the -D2 side) from the rear end (+D1 side) of the upper plate portion 26a1. The plate surface of the side plate portion 26a2 faces the first direction D1. The side plate portion 26a2 is provided on the front side (+D2 side) of the connection portion 24a. A first opposing surface 26c facing downward is provided on the lower end of the side plate portion 26a2. The first opposing surface 26c faces the connection portion 24a. As shown in FIG. 6, the side plate portion 26a2 is disposed opposite the lever member 22 on one side (+θ3 side) of the driven circumferential direction of the lever member 22. In other words, the first restricting member 26 is disposed opposite the lever member 22.

As shown in FIG. 5, the second portion 26b has a plate shape extending in the second direction D2. The plate surface of the second portion 26b faces the first direction D1. The second portion 26b is disposed below (on the -D2 side) the connection portion 24a of the lever member 22. The second portion 26b is fixed to the surface of the front wall portion 21d facing the rear (+D1 side) via the connection member 21h by a bolt 96. A second opposing surface 26d facing forward is provided at the end of the front side (+D2 side) of the second portion 26b. The second opposing surface 26d faces the connection portion 24a. As shown in FIG. 6, the second portion 26b is disposed opposite the lever member 22 on the other side (-θ3 side) of the driven circumferential direction of the lever member 22. In other words, the first restricting member 26 faces the lever member 22.

When an external force is applied to the door section 2 in the direction of opening the door section 2 while the locking unit 20 is in the locked state, as shown in FIG. 6 , a force F2 is applied to the driven pulley 13 via the drive member 14 in one direction in the circumferential direction of the driven shaft (the +θ3 side). At this time, an external force F1 is applied to the retaining portion 24 in one direction in the circumferential direction of the driven shaft via the fixing portion 25 inserted into the groove 13c. However, according to this embodiment, as described above, the side plate portion 26a2 of the first restricting member 26 is positioned opposite the connecting portion 24a on one side in the circumferential direction of the driven shaft, thereby preventing the connecting portion 24a from deforming in one direction in the circumferential direction of the driven shaft. This prevents the fixing portion 25 from coming out of engagement with the groove 13c. Therefore, even if an external force is applied to the door section 2 in the direction in which it opens, the locking section 20 can maintain the locked state, and therefore the locking section 20 can stably lock the door section 2.

The rotation stop member 27 restricts rotation of the lever member 22 to the other side (-θ1 side) in the circumferential direction of the rotation axis. As shown in FIG. 4, the rotation stop member 27 is housed inside the frame portion 21. The rotation stop member 27 is cylindrical and extends in the second direction D2. Although not shown, the rotation stop member 27 is fixed to the upper wall portion 21c of the frame portion 21. The rotation stop member 27 is disposed on the right side (+X side) of the lever base 23. The rotation stop member 27 faces the first outer surface 23e.

As described above, when the supply of power to the solenoid actuator 32 is stopped, the lever member 22 rotates around the lever rotation axis 23b toward the other side (-θ1 side) in the circumferential direction of the rotation axis. At this time, when the first outer surface 23e comes into contact with the rotation stop member 27, the rotation of the lever member 22 stops. Therefore, in this embodiment, the position of the magnetic member 31 in the opening/closing direction (X-axis direction) when the locking unit 20 is in the unlocked state is determined. Therefore, the next time power is supplied to the solenoid actuator 32, the magnetic member 31 can be stably moved to the left (-X side). This allows the locking unit 20 to be stably placed in the locked state, thereby stably locking the door unit 2. The shape of the rotation stop member 27 is not limited to that of this embodiment and may be a rectangular prism, such as a square prism, extending in the second direction D2. The rotation stop member 27 may also be omitted.

The detection unit 28 detects the state of the locking unit 20. As shown in FIG. 3, the detection unit 28 is housed inside the frame unit 21. Although not shown, the detection unit 28 is fixed to the upper wall portion 21c of the frame unit 21. The detection unit 28 is located on the right side (+X side) of the protrusion 23f. The detection unit 28 is electrically connected to the control unit 50. The detection unit 28 can detect whether or not there is contact with the protrusion 23f. As shown in FIG. 3, when the locking unit 20 is in the locked state, the protrusion 23f is separated from the detection unit 28. As shown in FIG. 4, when the locking unit 20 is in the unlocked state, the protrusion 23f is in contact with the detection unit 28. This allows the detection unit 28 to detect whether the locking unit 20 is in the locked state or the unlocked state.

Therefore, in this embodiment, when the control unit 50 supplies power to the solenoid actuator 32 and the locking unit 20 enters the locked state, the detection unit 28 can output a locking completion signal to the control unit 50. This allows the control unit 50 to quickly end the locking operation. Also, when the control unit 50 stops supplying power to the solenoid actuator 32 and the locking unit 20 enters the unlocked state, the detection unit 28 can output an unlocking completion signal to the control unit 50. This allows the control unit 50 to quickly end the unlocking operation. Note that the detection unit 28 does not necessarily have to be provided.

In addition, in this embodiment, even if the control unit 50 supplies power to the solenoid actuator 32 to rotate the lever member 22 to one side (+θ1 side) around the rotation axis, as shown in FIG. 7 , if the head 25b of the fixed portion 25 comes into contact with the protrusion between the grooves 13c of the driven pulley 13 and cannot be inserted into the groove 13c, the protrusion 23f comes into contact with the detection unit 28, and the detection unit 28 outputs a signal indicating that locking is not complete to the control unit 50. Therefore, the control unit 50 can notify a person performing maintenance or inspection of the automatic door system 1 via a network line or the like that the door unit 2 has not been locked. Therefore, the person performing maintenance or inspection can quickly adjust the position of the fixed portion 25 in the second direction D2 to a position where the fixed portion 25 can be inserted into the groove 13c of the driven pulley 13, as described above.

The second restricting member 29 prevents tooth jumping between the groove 13c of the driven pulley 13 and the protrusion 14a of the drive member 14. As shown in FIG. 3, the second restricting member 29 extends forward (toward the -D1 side) from the frame portion 21 and faces the drive member 14 in the opening/closing direction (X-axis direction). The second restricting member 29 has a base portion 29a, an extension portion 29b, and a restricting portion 29c.

The base 29a is approximately rectangular. It is located on the right side (+X side) of the frame 21. It is fixed to the frame 21 with bolts (not shown). The extension 29b is columnar and extends forward (-D1 side) from the base 29a. The front portion of the extension 29b is located to the right (+X side) of the driven pulley 13.

The restricting portion 29c is located on the right side (+X side) of the driven pulley 13. The restricting portion 29c faces the drive member 14 in the opening/closing direction (X-axis direction). The restricting portion 29c has a restricting main body portion 29d, a restricting shaft portion 29e, and a facing portion 29f. The restricting main body portion 29d is cylindrical and protrudes in the opening/closing direction (X-axis direction). The restricting main body portion 29d is connected to the front end (-D1 side) of the extension portion 29b. The restricting main body portion 29d is located on the right side (+X side) of the driven pulley 13. As shown in Figures 3 and 6, the restricting main body portion 29d overlaps with the driven pulley 13 when viewed in the opening/closing direction (X-axis direction).

As shown in FIG. 3, the regulating shaft portion 29e is generally cylindrical and extends in the opening/closing direction (X-axis direction). The regulating shaft portion 29e passes through the inside of the regulating main body portion 29d in the opening/closing direction (X-axis direction). The regulating shaft portion 29e is fixed to the regulating main body portion 29d. The left end (-X side) of the regulating shaft portion 29e protrudes from the regulating main body portion 29d toward the driven pulley 13.

The facing portion 29f is annular and protrudes to the left (-X side) from the restricting shaft portion 29e. As shown in FIG. 6, the facing portion 29f faces the driven pulley 13 across the drive member 14. The facing portion 29f faces the drive member 14 with a gap between them. The gap between the facing portion 29f and the drive member 14 is smaller than the depth of the groove 13c of the driven pulley 13 and the height of the protrusion 14a of the drive member 14. Therefore, in this embodiment, when the door drive unit 10 is driven, the protrusion 14a is prevented from coming out of the groove 13c. In other words, tooth skipping between the protrusion 14a and the groove 13c is prevented. Therefore, when the door drive unit 10 moves the door section 2, phase misalignment between the driven pulley 13 and the drive member 14 is prevented. Therefore, when the door section 2 is closed, the relative positions of the groove section 13c and the fixing section 25 in the second direction D2 can be prevented from shifting. As a result, the locking section 20 can stably lock the door section 2.

Furthermore, when an external force is applied to the door section 2 in the direction of opening the door section 2 while the locking unit 20 is in the locked state, as shown in FIG. 6, the rotation of the driven pulley 13 is restrained by the fixed portion 25, while a force F2 directed toward one side (+θ3 side) of the driven shaft direction is applied to the drive member 14 via the drive pulley 12. This may cause the drive member 14 to deform outward in the driven radial direction, causing the protrusion 14a to come out of the groove 13c. However, in this embodiment, the distance between the opposing portion 29f and the drive member 14 is smaller than the depth of the groove 13c and the height of the protrusion 14a, preventing the protrusion 14a from coming out of the groove 13c. In other words, tooth skipping between the protrusion 14a and the groove 13c is prevented. Therefore, even if an external force is applied to the door section 2 in the direction in which it opens, the locking section 20 can maintain the locked state, and therefore the locking section 20 can stably lock the door section 2.

According to this embodiment, the system includes a door section 2 that is movable in the opening/closing direction (X-axis direction), a door driver 10 that is connected to the door section 2 and moves the door section 2 in the opening/closing direction, and a locking section 20 that locks the door section 2. The door driver 10 includes a drive pulley 12 that is rotatable about a drive axis J2 that extends in a first direction D1 that is perpendicular to the opening/closing direction, a driven pulley 13 that has a driven shaft 13a that extends in the first direction D1 and is rotatable about the driven shaft 13a, and an annular drive member 14 that is wrapped around the drive pulley 12 and the driven pulley 13. The driven pulley 13 is located to the right of the drive pulley 12, i.e., on one side (+X side) in the opening/closing direction, and rotates in response to the drive pulley 12 via the drive member 14. The locking unit 20 has a lever rotation shaft 23b extending in a second direction D2 perpendicular to both the opening/closing direction and the first direction D1, a lever member 22 rotatable about the lever rotation shaft 23b, and a lever drive unit 30 that rotates the lever member 22 about the lever rotation shaft 23b. A plurality of grooves 13c recessed inward are provided along the outer peripheral surface of the driven pulley 13, and the lever member 22 has a fixed portion 25 that is disposed on the left side of the driven pulley 13, i.e., the other side (-X side) in the opening/closing direction, and is insertable into the grooves 13c. The lever drive unit 30 rotates the lever member 22 about the lever rotation shaft 23b, and can switch the state of the locking unit 20 between a locked state in which the fixed portion 25 is inserted into the grooves 13c and an unlocked state in which the fixed portion 25 is separated from the grooves 13c. Therefore, by rotating the lever member 22 having the fixed portion 25 around the lever rotation axis 23b using the lever driver 30, the fixed portion 25 is inserted into the groove 13c of the driven pulley 13, thereby preventing the driven pulley 13 from rotating. This allows the locking unit 20 to lock the door unit 2. This simplifies the configuration of the locking unit 20, thereby reducing the number of steps and costs required to manufacture the locking unit 20. This reduces the number of steps and costs required to manufacture the automatic door system 1.

In addition, in this embodiment, by using the lever drive unit 30 to rotate the lever member 22 in the opposite direction to that used to lock the locking unit 20, the fixed portion 25 and the driven pulley 13 are separated, placing the locking unit 20 in an unlocked state and unlocking the door unit 2. This eliminates the need to provide a separate component for unlocking the door unit 2 in addition to the component that locks the door unit 2. This makes it possible to more effectively simplify the configuration of the locking unit 20. This reduces the number of steps and costs required to manufacture the locking unit 20. This reduces the number of steps and costs required to manufacture the automatic door system 1.

According to this embodiment, the lever member 22 has a lever base 23 having a lever rotation shaft 23b and a connecting portion 23c that protrudes in the second direction D2 behind the lever rotation shaft 23b, i.e., on one side in the first direction (+D1 side). The locking unit 20 has a frame portion 21 that houses the lever base 23 and the lever drive unit 30. The driven pulley 13 is disposed on the front side of the frame portion 21, i.e., on the other side in the first direction (-D1 side). The lever rotation shaft 23b is connected to the frame portion 21. The lever drive unit 30 has a solenoid actuator 32 that moves the magnetic member 31 connected to the connecting portion 23c to the left, i.e., to the other side in the opening/closing direction (-X side), and a spring member 33, one end of which is connected to the connecting portion 23c and the other end of which is connected to the frame portion 21, and which pulls the connecting portion 23c to the right, i.e., to one side in the opening/closing direction (+X side). The solenoid actuator 32 locks the locking unit 20 when power is supplied, and unlocks the locking unit 20 when power is not supplied. Therefore, the lever drive unit 30, which rotates the lever member 22 on the lever rotation shaft 23b, can be composed only of the magnetic member 31, the solenoid actuator 32, and the spring member 33, simplifying the lever drive unit 30. Furthermore, the locking unit 20 can be switched between the locked and unlocked states by a simple control operation that switches between a state in which power is supplied to the solenoid actuator 32 and a state in which power is not supplied. This reduces the number of steps and costs required to manufacture the locking unit 20, as well as the automatic door system 1.

In addition, in this embodiment, the locking unit 20 is configured to be locked when power is supplied to the solenoid actuator 32, and unlocked when power is not supplied to the solenoid actuator 32. This means that the locking unit 20 is configured to be unlocked when power is supplied. Therefore, even if power is not supplied to the solenoid actuator 32 due to a power outage or a malfunction of the control unit 50, etc., the door unit 2 can be unlocked. Therefore, in the event of a power outage or a malfunction of the control unit 50, etc., the door unit 2 can be opened by applying an external force to the door unit 2.

<Modification>
Figure 9 is a cross-sectional view showing the unlocked state of the locking unit of an automatic door system according to a modification of this embodiment. The following describes the configuration of a modification that can be adopted in the above-described embodiment. Note that components identical to those in the above-described embodiment are given the same reference numerals, and their description will be omitted. As shown in Figure 9, in the automatic door system 201 according to this modification, the locking unit 220 is configured to be unlocked when power is applied and locked when power is not applied.

As shown in FIG. 9, the locking unit 220 of this modified example includes a frame unit 21, a lever member 222, a lever drive unit 230, a first restricting member 26, a rotation stop member 227, and a detection unit 228. In this modified example, the configurations of the frame unit 21 and the first restricting member 26 are similar to those of the frame unit 21 and the first restricting member 26 of the above-described embodiment.

As shown in FIG. 9 , the lever member 222 has a lever base 223, a holding portion 224, and a fixed portion 25. In this modified example, the configuration of the fixed portion 25 is the same as the configuration of the fixed portion 25 in the above-described embodiment.

The lever base 223 is housed inside the frame portion 21. The lever base 223 is rotatably held in the frame portion 21. The lever base 223 has a main body portion 223a, a lever rotation shaft 23b, a connecting portion 23c, and a protrusion 223f. In this modified example, the configurations of the lever rotation shaft 23b and the connecting portion 23c are the same as those of the lever rotation shaft 23b and the connecting portion 23c in the above-described embodiment.

As shown in FIG. 9, the main body portion 223a has a substantially rectangular parallelepiped shape. Of the outer surfaces of the main body portion 223a, the surface facing the left side (-X side) is the first outer surface 223e. The main body portion 223a is provided with a first through hole 23k, a second through hole 23m, and a third through hole 23n. In this modified example, the configurations of the first through hole 23k, the second through hole 23m, and the third through hole 23n are the same as the configurations of the first through hole 23k, the second through hole 23m, and the third through hole 23n in the above-described embodiment.

The protrusion 223f is a generally rectangular parallelepiped that protrudes to the left (-X side) from the rear (+D1 side) of the main body 223a. Of the outer surfaces of the protrusion 223f, the surface facing left is the second outer surface 223g.

As shown in FIG. 9, the holding portion 224 extends forward from the lever base 223, i.e., toward the other side in the first direction (-D1 side). The holding portion 224 holds the fixed portion 25. The holding portion 224 has a connecting portion 224a and a holding main body portion 24b. In this modified example, the configuration of the holding main body portion 24b is the same as the configuration of the holding main body portion 24b in the above-described embodiment.

The connection portion 224a connects the lever base 223 and the holding body portion 24b. The connection portion 224a is columnar and extends forward (towards -D1) from the body portion 223a. The front end of the connection portion 224a is connected to the holding body portion 24b.

As shown in FIG. 9, the lever drive unit 230 is housed inside the frame unit 21. The lever drive unit 230 has a magnetic member 231, a solenoid actuator 232, and a spring member 233.

The magnetic member 231 is columnar and extends in the opening/closing direction (X-axis direction). The right side (+X side) of the magnetic member 231 is inserted into the solenoid actuator 232. The left side (-X side) of the magnetic member 231 is inserted into the third through-hole 23n of the lever base 223. The magnetic member 231 has a first shaft 231a, a flange 231b, and a second shaft 231c.

The first shaft portion 231a is cylindrical and extends in the opening/closing direction (X-axis direction). At least a portion of the first shaft portion 231a is disposed inside a hole portion 232a (described later) of the solenoid actuator 232. The flange portion 231b is disc-shaped. The flange portion 231b is connected to the left (-X-axis) end of the first shaft portion 231a. The outer diameter of the flange portion 231b is larger than the inner diameter of the hole portion 232a (described later) of the solenoid actuator 232.

As shown in FIG. 9, the second shaft portion 231c has a rectangular prism shape that protrudes to the left (-X side) from the flange portion 231b. The left portion of the second shaft portion 231c is inserted into the third through hole 23n. The second shaft portion 231c has a fourth through hole 31d. The connecting portion 23c passes through the fourth through hole 31d in the second direction D2. In the opening/closing direction (X-axis direction), the inner surface of the fourth through hole 31d and the outer surface of the connecting portion 23c are in contact.

The solenoid actuator 232 is located on the right side (+X side) of the lever base 223. The solenoid actuator 232 has a hole 232a. The hole 232a is a recessed hole that extends from the surface of the solenoid actuator 232 facing the left side (-X side) toward the right side.

When the control unit 50 supplies power to the solenoid actuator 232, a magnetic force directed to the right (+X side) is applied to the magnetic member 231. Therefore, when power is supplied to the solenoid actuator 232, the connecting portion 23c is pulled to the right via the magnetic member 231. Note that when the control unit 50 stops supplying power to the solenoid actuator 232, no magnetic force is applied to the magnetic member 231.

As shown in FIG. 9, one end of the spring member 233 is connected to the connecting portion 23c inside the third through-hole 23n. The other end of the spring member 233 is fixed to the bolt 97. As a result, the spring member 233 pulls the connecting portion 23c to the left (-X side). Note that in this modified example, the force with which the spring member 233 pulls the connecting portion 23c to the left is smaller than the force with which the solenoid actuator 232 pulls the connecting portion 23c to the right.

Therefore, when power is supplied to the solenoid actuator 232 by the control unit 50, as shown in FIG. 9, the connecting portion 23c moves to the right (+X side) until the flange portion 231b comes into contact with the surface of the solenoid actuator 32 facing the left side (-X side). This causes the lever member 222 to rotate around the lever rotation axis 23b toward the other side (-θ1) in the circumferential direction of the rotation axis. At this time, the fixed portion 25 moves to the left (-X side), moving away from the driven pulley 13. Therefore, the head portion 25b of the fixed portion 25 separates from the groove portion 13c of the driven pulley 13. This puts the locking unit 220 in an unlocked state. In other words, when power is supplied to the solenoid actuator 232, the locking unit 220 is in an unlocked state.

Furthermore, when the control unit 50 stops the supply of power to the solenoid actuator 232, the lever base 223, including the connecting portion 23c, moves to the left (-X side). As a result, the lever member 222 rotates around the lever rotation axis 23b toward one side (+θ1) in the circumferential direction of the rotation axis. At this time, the fixed portion 25 moves to the right (+X side), i.e., toward the driven pulley 13. As a result, the head portion 25b of the fixed portion 25 is inserted into the groove portion 13c of the driven pulley 13. This places the locking unit 220 in a locked state. In other words, the solenoid actuator 232 places the locking unit 220 in a locked state when no power is supplied.

As shown in Figure 9, in this modified example, the rotation stop member 227 is positioned on the left side (-X side) of the lever base 223. When the supply of power to the solenoid actuator 232 is stopped, the lever member 222 rotates toward one side (+θ1 side) in the circumferential direction of the rotation axis, and when the first outer surface 223e comes into contact with the rotation stop member 227, the rotation of the lever member 222 stops. Therefore, when the locking unit 220 is in the unlocked state, the position of the magnetic member 231 in the opening/closing direction (X-axis direction) is determined, and the next time power is supplied to the solenoid actuator 232, the magnetic member 231 can be stably moved to the right (+X side).

As shown in Figure 9, in this modified example, the detection unit 228 is located on the left side (-X side) of the protrusion 223f. The detection unit 228 can detect whether or not there is contact with the protrusion 223f. Although not shown in the figure, when the locking unit 220 is in the locked state, the protrusion 223f comes into contact with the detection unit 228. As shown in Figure 9, when the locking unit 220 is in the unlocked state, the protrusion 223f moves away from the detection unit 228. This allows the detection unit 228 to detect whether the locking unit 220 is in the locked state or the unlocked state.

In the locking unit 220 of this modified example, when power is supplied to the solenoid actuator 232, the locking unit 220 is in an unlocked state, and when power is not supplied to the solenoid actuator 232, the locking unit 220 is in a locked state, resulting in an energized unlock-powerless lock configuration. As described above, in the locking unit 220 of this modified example, the solenoid actuator 232 is positioned on the right side (+X side) of the lever base 223, and the spring member 233 is positioned on the left side (-X side) of the lever base 223, resulting in an energized unlock-powerless lock configuration. Therefore, in the automatic door device 1 of the present invention, the locking unit can be easily configured as energized lock-powerless unlock or energized unlock-powerless lock by changing the positioning of the solenoid actuator 232 and the spring member 233. In other words, with the automatic door system 1 of the present invention, by changing only the configuration of the locking unit, the locking unit can be configured to lock when power is applied and unlock when power is not applied, or to unlock when power is applied and lock when power is not applied.

The present invention is not limited to the above-described embodiment, and other configurations and methods may be adopted within the scope of the technical concept of the present invention. For example, a configuration may be adopted in which the left and right sides are not provided. In this case, the first door is connected to, for example, a first fixed wall, and the second door is connected to, for example, a second fixed wall.

Furthermore, if the locking unit can stably lock the door unit, the first restricting member does not need to be provided. For example, if the rigidity of the lever member can be increased to prevent deformation of the lever member even when an external force is applied to move the door unit in the opening direction, the first restricting member does not need to be provided. In this case, the configuration of the locking unit can be further simplified.

Furthermore, if the projection of the driving member and the groove of the driven pulley can be maintained in engagement when the door is moved in the opening direction by an external force, the second restricting member does not need to be provided. In this case, the structure of the locking unit can be further simplified.

It goes without saying that the present invention is not limited to double-doors installed in corridors, but can also be applied to any double-door, such as double-doors installed in walls. Furthermore, the doors to which the present invention is applicable are not limited to double-doors, but can also be applied to single-doors.

1,201...automatic door device, 2...door portion, 10...door drive portion, 12...drive pulley, 13...driven pulley, 13a...driven shaft, 13c...groove portion, 14...drive member, 20,220...locking portion, 21...frame portion, 22,222...lever member, 23,223...lever base portion, 23b...lever rotation shaft, 23c...connecting portion, 24...retaining portion, 24d...long hole, 25...fixing portion, 26...first restricting member, 30,230...lever drive portion, 31,231...magnetic member, 32,232...solenoid actuator, 33,233...spring member, D1...first direction, D2...second direction, J2...drive axis

Claims (4)

A door portion that can move in the opening and closing direction;
a door driving unit connected to the door unit and configured to move the door unit in the opening and closing direction;
a locking unit that locks the door unit;
Equipped with
The door drive unit is
a drive pulley rotatable about a drive axis extending in a first direction perpendicular to the opening and closing direction;
a driven pulley rotatable about a driven shaft extending in the first direction;
an annular driving member wound around the driving pulley and the driven pulley;
and
the driven pulley is disposed on one side of the drive pulley in the opening and closing direction, and rotates in response to the drive pulley via the drive member;
The locking unit is
a lever member having a lever rotation axis extending in a second direction perpendicular to both the opening/closing direction and the first direction, and rotatable around the lever rotation axis;
a lever driving unit that rotates the lever member around the lever rotation axis;
and
a plurality of grooves recessed inward are provided along the outer circumferential surface of the driven pulley;
the lever member is disposed on the other side of the driven pulley in the opening/closing direction and has a fixing portion that can be inserted into the groove portion;
The lever drive unit rotates the lever member around the lever rotation axis, and the state of the locking unit can be switched between a locked state in which the fixed part is inserted into the groove, and an unlocked state in which the fixed part is separated from the groove. the lever member has the lever rotation shaft and a lever base portion having a connecting portion that protrudes in the second direction at a portion on one side of the lever rotation shaft in the first direction,
the locking unit has a frame portion that houses the lever base and the lever drive unit therein;
the driven pulley is disposed on the other side of the frame portion in the first direction,
The lever rotation shaft is connected to the frame portion,
The lever drive unit is
a solenoid actuator that moves a magnetic member connected to the connecting portion to the other side in the opening/closing direction;
a spring member having one end connected to the connecting portion and the other end connected to the frame portion, the spring member pulling the connecting portion to one side in the opening/closing direction;
and
The solenoid actuator
When power is supplied, the locking unit is placed in the locked state;
2. The automatic door system according to claim 1, wherein the locking unit is in the unlocked state when power is not supplied. the lever member has a holding portion that extends from the lever base portion to the other side in the first direction and holds the fixed portion,
the holding portion has an elongated hole that penetrates in the opening/closing direction and extends in the second direction,
The fixing portion is passed through the long hole,
3. The automatic door system according to claim 2, wherein the position of the fixing part relative to the holding part can be changed in the second direction. When the door portion moves in the opening direction, the driven pulley rotates to one side in the circumferential direction around the driven shaft,
the locking unit has a first restricting member fixed to the frame unit,
4. The automatic door system according to claim 2, wherein the first restricting member is disposed on one side of the lever member in the circumferential direction so as to face the lever member.