Opening / closing device, actuator, and door system

Abstract

To provide an opening / closing device having a highly versatile actuator.SOLUTION: An opening / closing device for opening / closing a door comprises: an actuator installed on one of a door and a wall part on a periphery of the door; and a link part that connects the actuator and the other of the door and the wall part. The actuator has an attachment part to which a shaft member for connecting the actuator and the link part is attached. The attachment part includes a first attachment part that opens downward when the actuator is in an installment state of being installed on one of the door and the wall part, and a second attachment part that opens upward in the installment state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening and closing device, an actuator, and a door system. [Background technology]

[0002] Automatic doors that open and close using power from a motor or other source are widely used. Although sliding doors that open and close a sliding door are the mainstream, swing-door automatic doors that open and close a swing-door are also used.

[0003] Patent document 1 describes an automatic opening and closing device for a revolving door, which comprises a lead screw rotated by a motor, a slider driven in a straight line back and forth along the lead screw, a curved bar for rotating the revolving door, and a roller supported by the slider and rotating on its own axis while clamping the curved bar. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 48-070444 Summary of the Invention [Problem to be solved by the invention]

[0005] There are left-handle doors (left-wing doors) with a handle (grip) located on the left side as viewed from the front, and right-handle doors (right-wing doors) with a handle (grip) located on the right side as viewed from the front. Conventional opening and closing devices as disclosed in Patent Document 1 and the like generally use opening and closing devices with slightly different structures depending on whether they are installed for a left-handle door or a right-handle door.

[0006] An object of the present invention is to provide a highly versatile actuator that can be used for both right-hand handle doors and left-hand handle doors, as well as an opening / closing device and a door system that are equipped with the actuator. [Means for solving the problem]

[0007] According to a first aspect of the present invention, An opening and closing device for opening and closing a door, An actuator installed on one of the door and the wall surrounding the door; a link portion connecting the actuator to the other of the door and the wall portion, the actuator has a mounting portion to which a shaft member that connects the actuator and the link portion is attached, An opening and closing device is provided, wherein the mounting portion includes a first mounting portion that opens downward in an installed state in which the actuator is installed on one of the door and the wall portion, and a second mounting portion that opens upward in the installed state.

[0008] According to a second aspect of the present invention, An actuator that is installed on one of a door and a wall portion surrounding the door to open and close the door, a link portion for transmitting the power of the actuator to the other of the door and the wall portion and a mounting portion to which a shaft member for connecting the actuator is attached; An actuator is provided, wherein the mounting portion includes a first mounting portion that opens downward in an installed state in which the actuator is installed on one of the door and the wall portion, and a second mounting portion that opens upward in the installed state.

[0009] According to a third aspect of the present invention, An opening and closing device according to a first aspect; A door system is provided, the door system comprising: a door that is opened and closed by the opening and closing device. Effect of the Invention

[0010] According to the present invention, there are provided a highly versatile actuator, and an opening / closing device and a door system including the actuator. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is an exploded perspective view of a door opening and closing device according to a first embodiment. [Diagram 2] FIG. 2 is a schematic configuration diagram of the operator unit. [Diagram 3] FIG. 3 is a side view showing a state in which the actuator and the link arm are connected by a connecting shaft. [Figure 4] Fig. 4(a) is an explanatory diagram showing a state where the door opening and closing device is installed on an inward-opening left-handle door, and Fig. 4(b) is an explanatory diagram showing a state where the door opening and closing device is installed on an inward-opening right-handle door. [Diagram 5] 5(a), 5(b) and 5(c) are explanatory diagrams showing the operation of the door opening and closing device for opening and closing an inward-opening door. [Figure 6] FIG. 6 is an exploded perspective view of the door opening and closing device of the second embodiment. [Figure 7] Fig. 7(a) is an explanatory diagram showing a state where the door opening and closing device is installed on an outward-opening left-handle door, and Fig. 7(b) is an explanatory diagram showing a state where the door opening and closing device is installed on an outward-opening right-handle door. [Figure 8] 8(a), 8(b) and 8(c) are explanatory diagrams showing the operation of the door opening and closing device for opening and closing an outward opening door. [Figure 9] 9(a), 9(b) and 9(c) are explanatory diagrams showing the operation of the door opening and closing device of the modified example for opening and closing an outward opening door. [Figure 10] FIG. 10 is an explanatory diagram showing the arrangement of various parts around the tip of the push rod of the actuator of the modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] First Embodiment A door opening and closing device 100 according to a first embodiment of the present invention will be described with reference to Figures 1 to 4. The door opening and closing device 100 is a device used for an inward-opening door (a door that opens towards the inside of the room).

[0013] As shown in FIG. 1, the door opening and closing device 100 mainly includes an operator unit OU1 and a link mechanism LM1.

[0014] In the following description, the direction in which the operator unit OU1 and the link mechanism LM1 are aligned is the vertical direction of the door opening and closing device 100, and the side where the operator unit OU1 is located is the upper side. The longitudinal direction of the operator unit OU1 is the horizontal direction of the door opening and closing device 100, and the right and left sides as viewed from the cover 50 (described later) side are the right and left sides. In addition, the direction perpendicular to the vertical and horizontal directions is the front-rear direction of the door opening and closing device 100, and the side where the cover 50 is located is the front.

[0015] The operator unit OU1 is a mechanism that provides power to open and close the door. As shown in Figures 1 and 2, the operator unit OU1 mainly includes a base plate 10, an actuator 20, a control circuit section 30, a power supply section 40, and a cover 50.

[0016] The base plate 10 is a member that supports each part of the operator unit OU1. In this embodiment, the base plate 10 is a rectangular flat plate made of metal with the long side extending in the left-right direction. When the door opening and closing device 100 is in use, the operator unit OU1 is fixed to a wall portion around the door to be opened and closed via the base plate 10.

[0017] In this embodiment, the actuator 20 is an electric linear actuator. The actuator 20 is rod-shaped with a central axis AX (FIG. 2), and is fixed onto the base plate 10 by a bracket (not shown) with the central axis AX aligned in the left-right direction.

[0018] 2, the actuator 20 has a motor 21, a speed reduction mechanism 22, and a feed screw mechanism 23. The motor 21, the speed reduction mechanism 22, and the feed screw mechanism 23 are arranged so as to be located on the central axis AX (i.e., arranged coaxially).

[0019] The motor 21 receives electric power from the power supply unit 40 and generates rotation.

[0020] The speed reducing mechanism 22 reduces the speed of the rotation transmitted from the motor 21 (i.e., increases the torque) and transmits the rotation to the feed screw mechanism 23. The speed reducing mechanism 22 may be, for example, a planetary gear mechanism.

[0021] The feed screw mechanism 23 converts the rotation transmitted from the speed reducing mechanism 22 into a movement in the direction of the central axis AX. The feed screw mechanism 23 mainly includes a ball screw 231, a push rod 232, and a guide member 233.

[0022] The ball screw 231 is a rod-shaped member having a screw formed on its outer periphery. The ball screw 231 rotates around the central axis AX by the rotation transmitted from the speed reduction mechanism 22.

[0023] The push rod 232 has a main body 232M and an attachment portion 232A formed at the tip of the main body 232M. The main body 232M is cylindrical and has a recess HL extending from a right end face 232Ma along the central axis AX. A screw is formed on the circumferential surface of the recess HL, and the screw is screwed into a ball screw 231 disposed in the recess HL. The push rod 232 moves in the direction of the central axis AX in response to the rotation of the ball screw 231.

[0024] The mounting portion 232A includes a flat plate portion FP protruding leftward from the left end surface 232Mb of the main body portion 232M, and a through hole TH penetrating the flat plate portion FP in the vertical direction. The cross-sectional shape of the through hole TH in a plane perpendicular to the vertical direction is circular. The region of the through hole TH located below the central axis AX is an example of a "first mounting portion," and the region of the through hole TH located above the central axis AX is an example of a "second mounting portion." The shape and arrangement of the region of the through hole TH located below the central axis AX and the shape and arrangement of the region of the through hole TH located above the central axis AX are symmetrical with respect to a plane perpendicular to the vertical direction and including the central axis AX.

[0025] The guide member 233 guides the movement of the push rod 232 in the direction of the central axis AX. The guide member 233 is cylindrical. The inner peripheral surface of the guide member 233 abuts against the outer peripheral surface of the main body 232M of the push rod 232.

[0026] The control circuit unit 30 controls the operation of the operator unit OU1 based on an external instruction or the like. The control circuit unit 30 is supported by the base plate 10 on the left side of the actuator 20. The control circuit unit 30 is located on the central axis AX of the actuator 20.

[0027] The power supply unit 40 supplies power to the actuator 20. The power supply unit 40 is supported by the base plate 10 on the left side of the control circuit unit 30. The power supply unit 40 may receive power from the outside (for example, a commercial power source), or the power supply unit 40 itself may be equipped with a power source (for example, a secondary battery).

[0028] The cover 50 is attached to the base plate 10 so as to cover each portion of the operator unit OU1. In this embodiment, the cover 50 is made of resin.

[0029] The link mechanism LM1 is a mechanism that transmits power generated in the operator unit OU1 to a door to be opened or closed, thereby opening or closing the door. The link mechanism LM1 mainly includes a bracket 60 and a link arm .

[0030] The bracket 60 is a member fixed to a door to be opened and closed. The bracket 60 has a vertical plate 61 that is fixed in contact with the door to be opened and closed, and a horizontal plate 62 that is perpendicular to the vertical plate 61. The horizontal plate 62 has a through hole th that passes through the horizontal plate 62 in the up-down direction. 60 is formed.

[0031] The link arm 70 has a first portion 71 and a second portion 72 extending in a plane perpendicular to the vertical direction, and a third portion 73 extending in the vertical direction and connecting the first portion 71 and the second portion 72. That is, the link arm 70 is bent in a crank shape so that one end and the other end are at different positions in the vertical direction. The first portion 71 is shorter than the second portion 72.

[0032] At one end 70a of the link arm 70 (the first portion 71 side), a through hole th is formed which passes through the link arm 70 in the vertical direction. 70a The end 70b on the other side (the second portion 72 side) of the link arm 70 is provided with a through hole th passing through the link arm 70 in the vertical direction. 70b is formed.

[0033] The actuator 20 and the link arm 70 are connected via a through hole TH and a through hole th 70b The connecting shaft CS is inserted into 20-70 As shown in FIG. 3, the connecting shaft CS 20-70 The connecting shaft CS has a shaft portion SF and a head portion HD having a diameter larger than that of the shaft portion. A screw thread is formed on the peripheral surface of the tip end of the shaft portion SF. 20-70 The head HD is positioned downward and the through hole th 70b and through hole TH, and is fixed to the actuator 20 by two nuts NT that sandwich the flat plate portion FP of the mounting portion 232A of the actuator 20.

[0034] A plate-shaped guide member GM having a slit SL extending in the left-right direction is provided between the actuator 20 and the link arm 70. The guide member GM is supported by the lower surface of the cover 50 in a state where it is fitted into a recess (not shown) provided on the lower surface of the cover 50. The connecting shaft CS 20-70 The connecting shaft CS extends through the slit SL and moves within the slit SL when the actuator 20 is actuated. By providing the guide member GM, when the actuator 20 and the link arm 70 are separated by a large distance (i.e., when the connecting shaft CS 20-70Even when the mounting portion 232A is long, the end 70b of the link arm 70 can be moved in an appropriate direction according to the movement of the mounting portion 232A.

[0035] The bracket 60 and the link arm 70 are connected via a through hole th 60 and through hole th 70a The connecting shaft CS is inserted into 60-70 The connecting shaft CS is rotatably connected to the connecting shaft CS. 60-70 is connecting shaft CS 20-70 The connecting shaft CS has a head and a shaft portion in the same manner as the connecting shaft CS. 60-70 The head is positioned on the upper side and the through hole th 70a and through hole th 60 The bracket 60 is fixed to the bracket 60 by two nuts (not shown) that sandwich the bracket 60.

[0036] The door opening and closing device 100 is installed on a door to be opened and closed as follows.

[0037] The door opening and closing device 100 of this embodiment can be used for both left-handle doors and right-handle doors. In this specification, a door with a handle located on the left side and a hinge located on the right side when viewed from the inside of the room (indoor side) is called a left-handle door. A door with a handle located on the right side and a hinge located on the left side when viewed from the inside of the room is called a right-handle door.

[0038] Fig. 4(a) shows the door opening and closing device 100 installed on a door DR in which the handle HN is located on the left side and the hinge HG is located on the right side when viewed from inside the room (i.e., a left-handle door). Fig. 4(b) shows the door opening and closing device 100 installed on a door DR in which the handle HN is located on the right side and the hinge HG is located on the left side when viewed from inside the room (i.e., a right-handle door). The door DR is opened and closed by pivoting around the hinge HG in a direction intersecting the wall surface on which the door DR is installed.

[0039] In both cases where the door opening and closing device 100 is installed on a left-handle door (FIG. 4(a)) and where the door opening and closing device 100 is installed on a right-hand handle door (FIG. 4(b)), the operator unit OU1 is installed on the wall WL above the door DR on the inside of the room. The central axis AX of the actuator 20 is aligned horizontally and with the width direction of the door DR. In addition, the bracket 60 is attached near the upper end of the door DR on the hinge HG side.

[0040] When the door opening and closing device 100 is installed on a left-handle door (FIG. 4(a)), the operator unit OU1 is fixed to the wall WL so that the control circuit unit 30 and the power supply unit 40 are located on the left side as viewed from the inside of the room, and the actuator 20 is located on the right side. On the other hand, when the door opening and closing device 100 is installed on a right-handle door (FIG. 4(b)), the operator unit OU1 is fixed to the wall WL so that the control circuit unit 30 and the power supply unit 40 are located on the right side as viewed from the inside of the room, and the actuator 20 is located on the left side. In other words, when the door opening and closing device 100 is installed on a left-handle door and when the door opening and closing device 100 is installed on a right-handle door, the orientation of the operator unit OU1 is inverted vertically and horizontally (rotated 180° around an axis perpendicular to the wall surface and the base plate 10).

[0041] Here, the mounting portion 232A of the actuator 20 of the operator unit OU1 of the door opening and closing device 100 of this embodiment has a through hole TH, and the connecting shaft CS 20-70 Therefore, whether the operator unit OU1 is oriented for a left-hand door or for a right-hand door, which is the inverse of the left-hand door, the connecting shaft CS 20-70 The attachment of the operator unit OU1 to the attachment portion 232A can be performed in the same manner. In other words, the operator unit OU1 having the same structure can be used for both a left-handle door and a right-handle door.

[0042] Incidentally, even if the orientation of the operator unit OU1 is for a left-handle door or for a right-handle door which is inverted vertically and horizontally, the cover 50 can be attached to the base 10 without changing the orientation of the cover 50 itself. Therefore, the appearance after installation of the operator unit OU1 is generally the same regardless of whether the operator unit OU1 is for a left-handle door or a right-handle door.

[0043] The mechanism of opening and closing the door DR by the door opening and closing device 100 will be described with reference to Fig. 5(a) to Fig. 5(c). In Fig. 5(a) to Fig. 5(c), in order to avoid complicating the drawings, the actuator 20 is omitted, and the movement range MA of the mounting part 232A in response to the actuation of the actuator 20 is indicated by a dotted line. Also, the mechanism of the opening and closing of the left-handle door is the same as that of the right-handle door, except that the movement directions of the parts and the direction of force application are reversed. Therefore, only the opening and closing of the left-handle door will be described here.

[0044] As shown in FIG. 5(a), when the door DR is closed, the link arm 70 extends almost parallel to the left and right direction. At this time, the push rod 232 (FIG. 4(a)) is in an extended state. Next, when the actuator 20 is driven to contract the push rod 232 (i.e., the mounting portion 232A is moved to the right), the end portion 70b of the link arm 70 moves to the right and the end portion 70a of the link arm 70 presses the bracket 60 to the right. As a result, the bracket 60 pulls the door DR toward the inside of the room, and the door DR is opened toward the inside of the room (FIGS. 5(b) and 5(c)). When the door DR is closed, the push rod 232 is extended (i.e., the mounting portion 232A is moved to the left).

[0045] The effects of the door opening and closing device 100 of the first embodiment are summarized below.

[0046] In the door opening and closing device 100 of the first embodiment, even if the operator unit OU1 is installed upside down and left and right, the connecting shaft CS 20-70The mounting of the actuator 20 to the mounting portion 232A can be performed in the same manner as before the inversion. Therefore, the operator unit OU1 and the actuator 20 having the same structure can be used for both left-hand and right-hand handle doors, and are highly versatile. This point leads to an advantage that in manufacturing, there is no need to change the process depending on whether the handle is for a left-hand handle or a right-hand handle, and manufacturing efficiency can be improved. In addition, in installation work, the same device can be brought to the site without determining whether it is for a left-hand handle or a right-hand handle, and this leads to an advantage that operational errors can be suppressed.

[0047] In the door opening and closing device 100 of this embodiment, the motor 21, the speed reducing mechanism 22, and the feed screw mechanism 23 are arranged in the actuator 20 of the operator unit OU1 so as to be positioned on the central axis AX (i.e., arranged coaxially). Therefore, the actuator 20, and therefore the operator unit OU1, are made compact, particularly in the vertical direction, and can be suitably installed in a small space.

[0048] <Second embodiment> A door opening and closing device 200 according to a second embodiment of the present invention will be described with reference to Figures 6 to 9. The door opening and closing device 200 is a device used for an outward opening door (a door that opens to the outside of the room).

[0049] As shown in FIG. 6, the door opening and closing device 200 mainly includes an operator unit OU2 and a link mechanism LM2.

[0050] The operator unit OU2 has the same configuration as the operator unit OU1 of the first embodiment, except that it is provided with a sub-mounting portion 10A to which a first link arm 91 (described later) of the link mechanism LM2 is connected. Regarding the operator unit OU2, a description of the same configuration as the operator unit OU1 will be omitted.

[0051] The sub-mounting portion 10A has a through hole TH penetrating the sub-mounting portion 10A in the vertical direction. 10AThe sub-mounting portion 10A is a block-shaped member having the following structure. The sub-mounting portion 10A is detachably fixed to the base plate 10 at a position lower than the actuator 20. The sub-mounting portion 10A can be fixed to the base plate 10 by, for example, screwing.

[0052] The link mechanism LM2 mainly includes a guide rail 81, a slider 82, a first link arm 91 (an example of a "first arm"), and a second link arm 92 (an example of a "second arm").

[0053] The guide rail 81 is an elongated member having a guide groove 81g and is fixed to a door to be opened and closed.

[0054] The slider 82 has a base portion 82b that is slidably engaged with the guide groove 81g of the guide rail 81, and a connection portion 82a that extends forward from the base portion 82b. The connection portion 82a has a through hole th that passes through the connection portion 82a in the vertical direction. 82 is formed.

[0055] The first link arm 91 is a long rod-shaped member. One end 91a of the first link arm 91 has a through hole th 91a However, the other end 91b has a through hole th 91b However, a through hole th is provided between the center and end portions 91a of the link arm 91 in the longitudinal direction. 91c The through holes th 91a , through hole th 91b , through hole th 91c each penetrates the first link arm 91 in the vertical direction.

[0056] The second link arm 92 is a long rod-shaped member. The second link arm 92 is shorter than the first link arm 91. One end 92a of the second link arm 92 has a through hole Th 92a However, the other end 92b has a through hole th 92b The through holes th 92a , through hole th 92b each penetrates the second link arm 92 in the vertical direction.

[0057] The end 91a of the link arm 91 is formed through a through hole th 91a and through hole TH 10A The connecting shaft CS is inserted into 10-91 The connecting shaft CS is connected to the base plate 10 via the connecting shaft CS. 10-91 The connecting shaft CS of the first embodiment 20-70 The connecting shaft CS has a head and a shaft portion in the same manner as the connecting shaft CS. 10-91 The head is positioned downwards and the through hole th 91a and through hole TH 10A The link arm 91 and the base plate 10 are inserted between the sub-mounting portion 10A and fixed to the sub-mounting portion 10A by two nuts (not shown) that sandwich the sub-mounting portion 10A. In this state, the link arm 91 and the base plate 10 are rotatable relative to each other.

[0058] The end 91b of the link arm 91 is formed through a through hole th 91b and through hole th 82 The connecting shaft CS is inserted into 82-91 The connecting shaft CS is connected to the slider 82 via the connecting shaft CS. 82-91 The connecting shaft CS of the first embodiment 20-70 The connecting shaft CS has a head and a shaft portion in the same manner as the connecting shaft CS. 82-91 The head is positioned downwards and the through hole th 82 and through hole th 91b The link arm 91 is inserted between the slider 82 and the link arm 91, and is fixed to the link arm 91 by two nuts (not shown) that sandwich the link arm 91. In this state, the link arm 91 and the slider 82 are rotatable relative to each other.

[0059] The end 92a of the link arm 92 is formed through a through hole th 92a and through hole th 91c The connecting shaft CS is inserted into 91-92 The connecting shaft CS is connected to the link arm 91 via the connecting shaft CS. 91-92 The connecting shaft CS of the first embodiment 20-70 The connecting shaft CS has a head and a shaft portion in the same manner as the connecting shaft CS. 91-92 The head is positioned downwards and the through hole th 91c and through hole th 92aThe link arms 91, 92 are inserted between the link arms 91, 92, and their vertical movement is restricted by two nuts (not shown) that sandwich the link arms 91, 92. In this state, the link arms 91 and 92 are rotatable relative to each other.

[0060] The end 92b of the link arm 92 is formed through a through hole th 92b and the connecting shaft CS inserted into the through hole TH. 20-92 The connecting shaft CS is connected to the mounting portion 232A via the connecting shaft CS. 20-92 The connecting shaft CS of the first embodiment 20-70 The connecting shaft CS has a head and a shaft portion in the same manner as the connecting shaft CS. 20-92 The head is positioned downwards and the through hole th 92b and through hole TH, and is fixed to the actuator 20 by two nuts (not shown) that sandwich the flat plate portion FP of the mounting portion 232A. In this state, the link arm 92 and the actuator 20 are rotatable relative to each other. 20-92 The connecting shaft CS of the first embodiment 20-70 Similarly, it extends through the slit SL of the guide member GM.

[0061] The door opening and closing device 200 is installed as follows: The door opening and closing device 200 of this embodiment can be used for both left-handle doors and right-handle doors.

[0062] Fig. 7(a) shows the door opening and closing device 200 installed on a door DR in which the handle HN is located on the left side and the hinge HG is located on the right side when viewed from inside the room (i.e., a left-handle door). Fig. 7(b) shows the door opening and closing device 200 installed on a door DR in which the handle HN is located on the right side and the hinge HG is located on the left side when viewed from inside the room (i.e., a right-handle door). The door DR is opened and closed by pivoting around the hinge HG in a direction intersecting the wall surface on which the door DR is installed.

[0063] In both cases where the door opening and closing device 200 is installed on a left-handle door (FIG. 7(a)) and where the door opening and closing device 200 is installed on a right-hand handle door (FIG. 7(b)), the operator unit OU2 is installed on the interior side of the room, on the wall WL above the door DR. The central axis AX of the actuator 20 is aligned with the horizontal direction and the width direction of the door DR. In addition, the guide rail 81 is attached near the upper end of the door DR with the longitudinal direction of the guide rail 81 aligned with the horizontal direction and the width direction of the door DR.

[0064] When the door opening and closing device 200 is installed on a left-handle door (FIG. 7(a)), the operator unit OU2 is fixed to the wall WL so that the control circuit unit 30 and the power supply unit 40 are located on the left side as viewed from the inside of the room, and the actuator 20 is located on the right side. On the other hand, when the door opening and closing device 200 is installed on a right-handle door (FIG. 7(b)), the operator unit OU2 is fixed to the wall WL so that the control circuit unit 30 and the power supply unit 40 are located on the right side as viewed from the inside of the room, and the actuator 20 is located on the left side. In other words, when the door opening and closing device 200 is installed on a left-handle door and when it is installed on a right-handle door, the orientation of the operator unit OU2 is inverted vertically and horizontally (rotated 180° around an axis perpendicular to the wall surface).

[0065] Here, the mounting portion 232A of the actuator 20 of the operator unit OU2 of the door opening and closing device 200 of this embodiment has a through hole TH, and the connecting shaft CS 20-92 Therefore, whether the operator unit OU2 is oriented for a left-hand door or for a right-hand door, which is the inverse of the left-hand door, the connecting shaft CS 20-92The sub-mounting part 10A can be attached to the mounting part 232A in the same manner. The sub-mounting part 10A is detachable from the base plate 10, and can be provided at a position below the actuator 20 depending on the orientation of the operator unit OU2. Therefore, by changing only the position of the sub-mounting part 10A, the connecting shaft CS can be mounted in the same position regardless of whether the operator unit OU2 is oriented for a left-hand handle door or a right-hand handle door. 10-91 These two points allow the operator unit OU2 of the present embodiment to be used for both left-handle doors and right-handle doors.

[0066] When the door opening and closing device 200 is installed on a left-hand handle door and when it is installed on a right-hand handle door, the link mechanism LM2 having the same structure is used, but the arrangement of the link mechanism LM2 is reversed from left to right.

[0067] The mechanism of opening and closing the door DR by the door opening and closing device 200 will be described with reference to Fig. 8(a) to Fig. 8(c). In Fig. 8(a) to Fig. 8(c), in order to avoid complication of the drawings, the actuator 20 is omitted, and the movement range MA of the mounting part 232A in response to the operation of the actuator 20 is indicated by a dotted line. Also, the opening and closing operations of the left-handle door and the right-handle door are the same in terms of the mechanism of operation, except that the movement directions of each part and the direction of force application are reversed. Therefore, only the opening and closing operations of the left-handle door will be described here.

[0068] As shown in FIG. 8(a), when the door DR is closed, the first link arm 91 and the second link arm 92 extend almost parallel to the left and right direction. At this time, the push rod 232 (FIG. 7(a)) is in an extended state. Next, when the actuator 20 is driven to contract the push rod 232 (moving the mounting portion 232A to the right), the end portion 92b of the second link arm 92 moves to the right and the end portion 92a of the second link arm 92 presses the first link arm 91 to the right. As a result, the first link arm 91 moves in a direction parallel to the connecting shaft CS on the end portion 91a side.10-91 The slider 82 connected to the other end 91b pivots about the axis and slides inside the guide rail 81g while pressing the guide rail 81 toward the outdoor side (outside the room). This causes the door DR to open toward the outdoor side. When closing the door DR, the push rod 232 is extended (the mounting portion 232A is moved leftward).

[0069] The effects of the door opening and closing device 200 of the second embodiment are summarized below.

[0070] The door opening and closing device 200 of the second embodiment can also achieve the same effects as the door opening and closing device 100 of the first embodiment.

[0071] In addition, in the door opening / closing device 200 of the second embodiment, the link mechanism LM2 is equipped with the guide rail 81, the first link arm 91, and the second link arm 92, so that a mechanism for opening the door to the outdoors by the operator unit OU2 arranged on the indoor side can be realized with a compact configuration.

[0072] Here, as in the modified example shown in Fig. 9(a) to Fig. 9(c), it is also possible to realize a mechanism using a bracket 60 for opening the door DR to the outdoor side by an actuator 20 arranged on the indoor side. In this case, however, it is necessary to apply a force to the bracket 60 from the hinge HG side so as to press the door DR toward the outdoor side. Therefore, as shown in Fig. 9(a), it becomes necessary to connect the actuator 20 and the bracket 60 by a link arm 75 that extends from the actuator 20 beyond the bracket 60 to the hinge HG side, and a link arm 77 that connects the link arm 75 and the bracket 60 (in Fig. 9(a) to Fig. 9(c), "CS" stands for connecting shaft CS). 20-92(The connecting shaft is the same as the connecting shaft 30 of the door DR, etc.). In this embodiment, the link arms 75, 77 are disposed outside the door DR in the left-right direction. The actuator 20 is also disposed outside the door DR in the left-right direction. In contrast, the door opening and closing device 200 of the second embodiment includes a second link arm 92 that applies the power of the actuator 20 to a position between the ends 91a, 91b of the first link arm 91, and a guide rail 81 that slidably supports the end 91b of the first link arm 91, so that the door DR can be opened and closed while the end 91a of the first link arm 91 is kept at a fixed position inside the door DR in the left-right direction. Therefore, the door opening and closing device 200 can be compactly installed inside the door DR in the left-right direction.

[0073] <Modification> The door opening and closing device 100 of the first embodiment and the door opening and closing device 200 of the second embodiment may also employ the following modified aspects.

[0074] In the door opening / closing device 100 of the first embodiment and the door opening / closing device 200 of the second embodiment, the mounting portion 232A of the actuator 20 has a flat plate portion FP and a through hole TH formed in the flat plate portion FP, but is not limited thereto. The mounting portion 232A may have any form having a first mounting portion that opens downward when the actuator 20 is installed on a wall portion and a second mounting portion that opens upward in the installation state. Specifically, for example, the mounting portion 232A may have a first recessed hole that opens downward and a second recessed hole that opens upward. In this case, the first recessed hole and the second recessed hole do not need to communicate with each other. In addition, the first recessed hole and the second recessed hole may be provided at different positions relative to each other in the direction of the central axis AX. The shape and arrangement of the first recessed hole and the shape and arrangement of the second recessed hole may be plane symmetrical with respect to a plane that is perpendicular to the up-down direction and includes the central axis AX.

[0075] In the door opening and closing device 100 of the first embodiment and the door opening and closing device 200 of the second embodiment, the actuator 20 may include an adapter that is detachably attached to the attachment portion 232A of the push rod 232, and an adapter guide that guides the movement of the adapter. Specifically, for example, the following configuration may be adopted.

[0076] 10, the adapter 24 has a block-shaped main body 24M, a base 24B protruding from the main body 24M toward the push rod 232, and a shaft-shaped connecting portion 24C protruding upward from the base 24B. The main body 24M has a through hole TH penetrating the main body 24M in the vertical direction. 24 is provided.

[0077] The adapter 24 is connected to the push rod 232 by inserting the connecting portion 24C into the through hole TH of the attachment portion 232A. In this state, the adapter 24 moves integrally with the push rod 232 along the central axis AX together with the push rod 232.

[0078] The adapter guide 25 is cylindrical and is disposed surrounding the outer periphery of the guide member 233. The cross-sectional shape of the adapter guide 25 taken along a plane perpendicular to the central axis AX may be quadrilateral (square or rectangle). The adapter guide 25 guides the movement of the adapter 24 in the direction of the central axis AX with the inner peripheral surface of the adapter guide 25 in contact with the outer surface of the main body 24M of the adapter 24. The adapter guide 25 has through holes TH on its upper and lower surfaces. 24 A slit (not shown) extending along the central axis AX is provided at a position corresponding to the through hole TH. 24 A connecting shaft attached to the adapter 24 extends through the slit and moves inside the slit when the adapter 24 moves.

[0079] In this modified example, the through hole TH 24By preparing a plurality of adapters 24 having different diameters, these can be selectively connected to the push rod 232. This makes it possible to change the diameter of the through hole of the actuator 20, and to attach connecting shafts having various diameters to the actuator 20. In other words, the versatility of the actuator 20 is further increased. 24 The region located below the central axis AX is an example of the "first mounting portion", and the through hole TH 24 The region located above the central axis AX is an example of a "second mounting portion." 24 It is not necessary for the actuator 20 to have a first mounting portion that opens downward when the actuator 20 is installed on a wall, and any mounting portion that opens upward when the actuator 20 is installed on the wall may be used.

[0080] In this modified example, the adapter guide 25 may be omitted. The adapter 24 may be regarded as a part of the screw feed mechanism 23.

[0081] In the door opening and closing device 100 of the first embodiment and the door opening and closing device 200 of the second embodiment, at least one of the motor 21, the reduction mechanism 22, the feed screw mechanism 23, the control circuit unit 30, and the power supply unit 40 does not have to be arranged on the central axis AX.

[0082] In the door opening / closing device 100 of the first embodiment and the door opening / closing device 200 of the second embodiment, the feed screw mechanism 23 of the actuator 20 may incorporate a coil spring that biases the push rod 232 in the extension direction. In this way, even if the power supply is stopped while the door is being opened or closed, for example, the push rod 232 can be extended by the elastic force of the coil spring, and the door to be opened or closed can be closed.

[0083] The door opening and closing device 100 of the first embodiment and the door opening and closing device 200 of the second embodiment are configured to open the door when the push rod 232 of the actuator 20 is contracted, but the present invention is not limited to this. The door opening and closing devices 100 and 200 may also be configured to open the door when the push rod 232 is extended.

[0084] The link mechanism LM1 of the door opening / closing device 100 of the first embodiment is not limited to having the bracket 60 and the link arm 70. Moreover, the link mechanism LM2 of the door opening / closing device 200 of the second embodiment is not limited to having the guide rail 81, the slider 82, the first link arm 91, and the second link arm 92. The link mechanisms LM1 and LM2 may have any configuration that opens and closes the target door in response to the operation of the actuator 20. The link mechanism LM2 may have a roller on the end 91b of the first link arm 91 instead of the guide rail 81 and the slider 82. In this case, the roller moves relative to the door DR and presses the door DR toward the outside. The configuration of the link mechanisms LM1 and LM2 may be different depending on whether the door opening / closing device 100, 200 is installed on a left-handle door or a right-handle door.

[0085] The door opening and closing device 100 of the first embodiment is configured so that the operator unit OU1 is fixed to a wall and the bracket 60 is fixed to the door, but is not limited to this. The door opening and closing device 100 may be configured so that the operator unit OU1 is fixed to the door and the bracket 60 is fixed to the wall. Similarly, the door opening and closing device 200 of the second embodiment may be configured so that the operator unit OU2 is fixed to the door and the guide rail 81 is fixed to the wall.

[0086] In the door opening and closing device 200 of the second embodiment, the position of the sub-mounting portion 10A is changed depending on whether the door opening and closing device 200 is installed on a left-handle door or a right-handle door. However, this is not limited to this. Both the sub-support portion 10A used when the door opening and closing device 200 is installed on a left-handle door and the sub-support portion 10A used when the door opening and closing device 200 is installed on a right-handle door may be fixedly provided in advance on the base plate 10 of the operator unit OU2 of the door opening and closing device 200.

[0087] The actuator 20 of the first embodiment, the second embodiment, and the modified example may be regarded as an actuator for a door opening and closing device. Also, the combination of the door opening and closing device 100, 200 of the first embodiment, the second embodiment, and the modified example with a door to be opened and closed may be regarded as a door system.

[0088] As long as the characteristics of the present invention are maintained, the present invention is not limited to the above-mentioned embodiment and modifications. Other embodiments that are conceivable within the scope of the technical idea of ​​the present invention are also included in the scope of the present invention. [Explanation of symbols]

[0089] 10 Base plate 20 Actuator 21 Motor 22 Reduction mechanism 23 Lead screw mechanism 231 Ball screw 232 Push rod 232A Mounting part 233 Guide member 24 Adapters 25 Adapter Guide 30 Control circuit section 40 Power supply section 50 Cover 60 Bracket 70 Link arm 81 Guide rail 82 Slider 91 First link arm 92 Second link arm DR Door LM1, LM2 link mechanism OU1, OU2 operator units

Claims

1. An opening and closing device for opening and closing a door, An actuator installed on one of the door and the wall surrounding the door; a link portion connecting the actuator to the other of the door and the wall portion, the actuator has a mounting portion to which a shaft member that connects the actuator and the link portion is attached, An opening and closing device, wherein the mounting portion includes a first mounting portion that opens downward in an installed state in which the actuator is installed on one of the door and the wall portion, and a second mounting portion that opens upward in the installed state.

2. The opening and closing device according to claim 1 , wherein the first mounting portion and the second mounting portion are plane symmetrical to each other.

3. the actuator includes a motor, a feed screw mechanism having the mounting portion, and a speed reduction mechanism that reduces the speed of rotation of the motor and transmits the rotation to the feed screw mechanism, The opening and closing device according to claim 1 , wherein the motor, the feed screw mechanism, and the reduction mechanism are coaxially arranged.

4. The link portion is A first arm having one end pivotally supported at a fixed position and the other end movable relative to the door; a second arm having one end connected to a position between the one end and the other end of the first arm and having the shaft member attached to the other end; 2. The opening and closing device according to claim 1, wherein the second arm pivots the first arm, whereby the other end of the first arm moves along the door and presses the door toward the outside.

5. the actuator has a ball screw and a push rod that moves in an axial direction of the ball screw in response to rotation of the ball screw, The mounting portion has an adapter detachably attached to a tip end of the push rod, The opening and closing device according to claim 1 , wherein a first mounting portion and a second mounting portion are formed on the adapter.

6. An actuator that is installed on one of a door and a wall portion surrounding the door to open and close the door, a link portion for transmitting the power of the actuator to the other of the door and the wall portion and a mounting portion to which a shaft member for connecting the actuator is attached; The actuator, wherein the mounting portion includes a first mounting portion that opens downward in an installed state in which the actuator is installed on one of the door and the wall portion, and a second mounting portion that opens upward in the installed state.

7. 7. The actuator according to claim 6, wherein the first mounting portion and the second mounting portion are plane symmetrical with respect to each other.

8. the actuator includes a motor, a feed screw mechanism having the mounting portion, and a speed reduction mechanism that reduces the speed of rotation of the motor and transmits the rotation to the feed screw mechanism, 8. The actuator according to claim 6, wherein the motor, the feed screw mechanism, and the reduction mechanism are coaxially arranged.

9. the actuator has a ball screw and a push rod that moves in an axial direction of the ball screw by rotation of the ball screw, The mounting portion has an adapter detachably attached to a tip end of the push rod, 8. The actuator according to claim 6, wherein a first mounting portion and a second mounting portion are formed on the adapter.

10. An opening and closing device according to any one of claims 1 to 5; A door system comprising: a door that is opened and closed by the opening and closing device.

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