Building fixtures and method for repairing building fixtures

Abstract

To provide a fitting that utilizes a door wheel and has a driving unit for a shoji screen independent of the door wheel. 【Solution means】A fitting 1 comprising a frame body 2, a shoji screen 10 slidably movable within the frame body 2, two door wheels 6A, 6B respectively provided at both end portions in the finding direction of the lower frames 32, 42 of the shoji screen 10 and supporting the shoji screen 10 movably within the frame body 2, and a driving unit 7 provided on the lower frames 32, 42 so as to be positioned between the two door wheels 6A, 6B in the finding direction and having a driving door wheel 73 that rotates by power. The two door wheels 6A, 6B roll following the driving door wheel 73 of the driving unit 7.

Description

Technical Field

[0001] The present invention relates to a fitting and a method for repairing a fitting.

Background Art

[0002] Conventionally, a worm gear part is provided on one side of a flange part of a door wheel attached to a lower rail of a door body, and a drive device for a door body has been proposed, which is characterized in that a worm meshing with the worm gear part and a motor for rotating the worm are housed in the lower rail. (See Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the drive device for the door body of Patent Document 1 is replaceable with a conventional door wheel of a door body. Therefore, it is not possible to share the door wheel of a manually openable / closable door body and the door wheel of an electrically openable / closable door body, and it was not possible to automate the door body while making use of the conventional door wheel. Further, when installing the drive device of Patent Document 1 in an existing door body, it is necessary to remove the existing door wheel previously provided on the lower rail of the door body and then newly install the drive device of Patent Document 1, and there is also a problem that the construction for automating the existing door body is not easy.

[0005] An object of the present disclosure is to provide a fitting including a drive unit for a shoji screen independent of a door wheel while making use of the door wheel, and a method for repairing the same.

Means for Solving the Problems

[0006] The present disclosure relates to a fitting, which includes a frame body, a shoji door slidably movable within the frame body, two door wheels respectively provided at both ends in the finding direction of the lower frame of the shoji door and supporting the shoji door movably within the frame body, and a drive unit provided on the lower frame so as to be positioned between the two door wheels in the finding direction and including a drive door wheel that rotates by power, wherein the two door wheels roll following the drive door wheel of the drive unit.

[0007] The present disclosure also relates to a method for renovating a fitting, which is a fitting including a frame body, a shoji door slidably movable within the frame body, and two door wheels respectively provided at both ends in the finding direction of the lower frame of the shoji door and supporting the shoji door movably within the frame body, and in which a drive unit including a drive door wheel that rotates by power is provided between the two door wheels in the finding direction.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0009] [First Embodiment] Hereinafter, the first embodiment of the present disclosure will be described in detail with reference to the drawings. In this specification, the "finding direction" indicates the surface direction of the shoji door in a fitting installed in an opening formed in a building, and the "prospective direction" indicates the thickness direction of the shoji door.

[0010] As shown in FIG. 1, the fitting 1 of the present embodiment is arranged at an opening of a building (not shown), and includes a shoji 10 that can slide inside a frame body 2, a door wheel 6 provided on the lower frame 32 and the lower frame 42 of the shoji 10, a drive unit 7, a control device 9 (not shown) that controls the drive unit 7, and a communication device 11. The fitting 1 of the present embodiment is a sliding window, and the shoji 10 in FIG. 1 shows a closed state.

[0011] The frame body 2 is configured by framing an upper frame 21, a lower frame 22, and vertical frames 23 and 24 arranged in the left - right direction in a substantially rectangular shape. The frame body 2 is composed of a profile obtained by extrusion - molding a metal such as aluminum, for example. As shown in FIG. 2, the lower frame 22 has an indoor - side lower frame 22A and an outdoor - side lower frame 22B, and the inner - side lower frame 22A and the outdoor - side lower frame 22B are connected by a heat - insulating bridge material at approximately the center in the prospective direction. Thereby, high heat - insulating performance is ensured.

[0012] The lower frame 22 has a running rail 221 at the upper part. The running rail 221 includes two running rails, a running rail 221A provided on the indoor side and a running rail 221B provided on the outdoor side. The upper end portion of the running rail 221 can roll the door wheel 6, and the shoji 10 can be slid by the rolling door wheel 6.

[0013] Returning to FIG. 1, the shoji 10 is composed of an inner shoji 3 and an outer shoji 4. The inner shoji 3 has a frame body 30, a cover body 50A, and a multi - layer glass G1. The inner shoji 3 is a sliding door, and by sliding the inner shoji 3 in the left - right direction, the opening formed by the frame body 2 is closed or opened. The frame body 30 is composed of an upper frame 31, a lower frame 32, an inner - side frame 33, and a door - end frame 34. As shown in FIG. 2, the frame body 30 is composed of a profile obtained by extrusion - molding a metal such as aluminum, for example, and the indoor - side finding surface is covered by the cover body 50A. The lower frame 32 has a hollow portion 321 extending in the longitudinal direction.

[0014] The cover body 50A may be made of any material such as resin or metal, but is preferably made of a material different from that of the outdoor lower frame 22B. For example, when the outdoor lower frame 22B is made of a metal such as aluminum, it is preferable that the cover body be made of resin from the viewpoint of heat insulation.

[0015] Returning to FIG. 1, the cover body 50A is configured in a substantially rectangular shape so as to cover the indoor-side mating surfaces of the upper frame 31, the lower frame 32, the inner frame 33, and the door tip frame 34. As shown in FIG. 2, the cover body 50A has a hollow portion 51 extending in the longitudinal direction and has the effect of enhancing the heat insulation performance of the joinery 1. Further, the cover body 50A also has the effect of enhancing the design of the joinery 1 by being disposed on the indoor side.

[0016] As shown in FIG. 2, the multilayer glass G1 is a face material fitted and fixed to the frame body 30 and the cover body 50A. Although a multilayer glass is used in this embodiment, a single-pane glass may be used in the present disclosure. Further, the face material used for the joinery 1 is not limited to glass, and for example, a face material made of any material such as a resin panel may be used.

[0017] As shown in FIG. 1, the outer shutter 4 includes a frame body 40, a cover body 50B, and a multilayer glass G2. Since the frame body 40, the cover body 50B, and the multilayer glass G2 of the outer shutter 4 respectively correspond to the frame body 30, the cover body 50A, and the multilayer glass G1 of the inner shutter 3, the description thereof is omitted. The frame body 40 is composed of an upper frame 41, a lower frame 42, an outer inner frame 43, and a door tip frame 44. As shown in FIG. 2, the lower frame 42 has a hollow portion 421 extending in the longitudinal direction.

[0018] The door wheel 6 includes door wheels 6A and 6B. The door wheel 6A is provided on the inner shutter 3, and the door wheel 6B is provided on the outer shutter 4. The door wheel 6 has a case, a wheel having a rotating shaft, and a height adjustment mechanism. As the height adjustment mechanism, for example, a structure is exemplified in which the wheel is supported by the case of the door wheel 6 and a notch portion extending in the vertical direction of the side surface portion of the case is used, whereby the height of the rotating shaft of the wheel is adjusted. As shown in FIG. 2, the door wheel 6 is provided so as to roll in the longitudinal direction on the traveling rail 221. The door wheel 6 has two door wheels 6A and 6B, and is a driven wheel that rolls following the driving wheel 73 of the driving unit 7 described later, and the rotation direction and speed are determined according to the stress applied from the outside.

[0019] As shown in FIGS. 1 and 2, in the inner shutter 3, the support case 74 of the driving unit 7 is fixed and disposed at the central portion in the finding direction of the hollow portion 321 of the lower frame 32 with a part of the side surface portion cut off so that the driving unit 7 can be accommodated, and the driving wheel 73 of the driving unit 7 is engaged with the traveling rail 221. That is, the driving unit 7 is provided on the lower frame 32 so as to be located between the two door wheels 6A and 6B in the finding direction. With this configuration, the driving wheel 73 rolls by the power of the small motor 71, so that the door wheel 6 provided on the shutter 10 is driven, and the shutter 10 can be slid on the traveling rail 221.

[0020] As shown in FIG. 3, the driving unit 7 includes a small motor 71, a gear unit 72, a driving wheel 73, a support case 74, a battery 75, and a load sensor 76 shown in FIG. 4. The small motor 71 has a main body portion 711 and an output shaft 712. Power is generated by the rotation of a rotor (not shown) in the main body portion 711, whereby the output shaft 712 rotates, and power is transmitted from the output shaft 712 to the gear unit 72. The gear unit 72 is composed of a plurality of gears, and transmits power to the driving wheel 73 while reducing the rotation speed of the small motor 71 and increasing the output torque.

[0021] The drive pulley 73 has the same shape as the pulleys 6A of the inner shutter 3 and the pulley 6B of the outer shutter 4. The drive pulley 73 is supported by a support case 74 and is arranged such that a part of the wheel protrudes from the lower part of the support case 74. As shown in FIG. 2, the drive pulley 73 is engaged with a traveling rail 221 provided on the lower frame 22 and is configured to be able to travel on the traveling rail 221. The gear unit 72 and the drive pulley 73 are connected on the same axis C1 and rotate integrally.

[0022] As shown in FIG. 2, springs SP are respectively fixed to the upper parts of the lower frames 32 and 42 so as to abut against the upper surface part of the support case 74 of the drive unit 7. By the elastic force of the spring SP, the drive pulley 73 can be pressed in the direction of the traveling rail 221 indicated by the arrow A. That is, the spring SP is a biasing mechanism that biases the drive pulley 73 onto the traveling rail 221. With this configuration, even when the vertical position of the pulley 6 fluctuates due to the height adjustment mechanism of the pulley 6, the drive pulley 73 can be biased onto the traveling rail 221 and the drive pulley 73 can be rolled. Thereby, regardless of the vertical position of the pulley 6, the shutter 10 can be driven to slide by the power of the drive unit 7 without performing height adjustment.

[0023] Inside the support case 74, a battery 75 is arranged to supply power to and drive the small motor 71. The battery 75 is a rechargeable battery and is charged by non-contact power supply such as electromagnetic induction method or resonance method. Specifically, for example, power can be supplied to the battery 75 by receiving power non-contact from a non-contact power receiving part (not shown) provided on the lower frame 32 or 42 from a non-contact power supply part (not shown) provided on the vertical frame 23 or 24. Thereby, when the inner shutter 3 and the outer shutter 4 are in the closed state, the battery 75 can be charged. Since a general window sash is often in the closed state at night or when going out, the drive unit 7 can be charged without being conscious in daily life. However, it is not limited to this. By providing a relay point or the like and using this relay point, it is possible to charge even when the shutter is open. The load sensor 76 is a sensor that detects the torque (torque of the small motor 71) generated by the rotation of the drive wheel 73, and notifies the detected torque signal to a control device 9 described later.

[0024] As shown in FIG. 4, the control device 9 includes a load detection / operation unit 91, a motor control unit 92, and a lock control unit 93. The control device 9 is a device that controls the drive unit 7 and the solenoid lock 8, and may be installed, for example, inside the support case 74 of the drive unit 7. The control device 9 is composed of a CPU, a ROM, an HDD, etc. The load detection / operation unit 91 acquires the torque signal output from the load sensor 76 of the drive wheel 73, and determines commands to the motor control unit 92 and the lock control unit 93 based on the acquired information. The motor control unit 92 controls the power of the small motor 71. The lock control unit 93 controls the operation of the solenoid lock 8. The operations of each functional unit in the block diagram of FIG. 4 will be described later.

[0025] As shown in FIGS. 1 and 4, the fitting 1 includes a communication device 11. The communication device 11 is a remote device that can send an operation command of the fitting 1 to the control device 9 by communicating via a communication interface. For example, it includes a remote control, a smartphone, a pad device, a smart speaker, a personal computer, etc., which are devices corresponding to a smart home system.

[0026] As shown in FIG. 2, the fitting 1 has a solenoid lock 8. The solenoid lock 8 is an electric locking mechanism having a solenoid body 81 and a movable shaft 82. The solenoid lock 8 is provided at the lower parts of the lower frame 32 and the lower frame 42, and can lock or unlock the movement of the inner shutter 3 and the outer shutter 4 at a predetermined position. As the predetermined position, for example, a position where the shutter 10 is closed as the first position is assumed. Also, as the second position, it is assumed that the solenoid lock 8 is provided at a position where the shutter 10 is open and the security and ventilation properties can be ensured. The effects of providing the first position and the second position will be described in detail in the automatic ventilation mode described later.

[0027] The movable shaft 82 can expand and contract in the direction of arrow B (expected direction), and the movable shaft 82 penetrates through a hole portion provided in advance in the traveling rail 221, thereby fixing the operation of the shutter 10 and locking the solenoid lock 8. Conversely, when unlocking, the movable shaft 82 is detached from the above-described hole portion, so that the fixed shutter 10 is released and the solenoid lock 8 is unlocked.

[0028] By providing the solenoid lock 8, it becomes possible to lock the shutter 10 at a predetermined position, and the fitting 1 does not need to use a key such as a crescent lock. With this configuration, the attachment surfaces of the double-layer glass G1 and the double-layer glass G2 are not shielded by an operation lever or the like, and the appearance of the fitting can be made clean and simple, and the design property of the fitting 1 can be improved.

[0029] Next, a method for controlling the shutter 10 by the control device 9 will be described in detail. As described below, the control device 9 of the present embodiment can execute an electric assist mode for electrically assisting the movement of the shutter 10. Further, the control device 9 of the present embodiment can execute an automatic ventilation mode of the shutter 10.

[0030] (Electric Assist Mode) First, the operation of opening the shoji screen 10 will be described. Confirm that the solenoid lock 8 is unlocked. If it is locked, an unlocking command is output from the communication device 11 to unlock the solenoid lock 8. Next, while pressing the shoji screen 10 by hand, slide it in the opening direction. When the shoji screen starts to move, the load sensor 76 detects the torque and outputs a signal to the load detection / arithmetic unit 91 of the control device 9. When the gradually increasing load becomes equal to or greater than the first predetermined value, the motor control unit 92 outputs a command to start driving the small motor 71. Due to the power of the small motor 71 that has received the command, the driving idler wheel 73 starts to roll, and the idler wheel 6 is driven following the rolling of the driving idler wheel 73, thereby assisting the sliding movement of the shoji screen 10.

[0031] Next, the operation of closing the shoji screen 10 will be described. After moving the shoji screen 10 to a desired position by the electric assist of the drive unit 7, by stopping applying force by hand to the shoji screen 10, the torque of the driving idler wheel 73 decreases. When the load detection / arithmetic unit 91 of the control device 9 receives the torque signal output by the load sensor 76 and determines that the load has become less than the first predetermined value, the motor control unit 92 outputs a command to stop driving the small motor 71. The small motor 71 that has received the command stops, and the movement of the drive unit 7 also stops, thereby ending the electric opening / closing assist mode.

[0032] With this configuration, based on the initial manual opening / closing operation of the shoji screen 10, the start and end of the electric assist mode can be automated. Since it is possible to save the trouble of operating a separate switch or remote control as in a conventional fully automatic opening / closing device, the operability of the fitting 1 is improved, and even a person who operates the fitting 1 for the first time can use the electric assist mode of the shoji screen 10 without prior knowledge.

[0033] Further, even without applying a large force, the shoji 10 can be easily opened and closed with a light force. For example, in the case of a fitting with an opening as large as possible in a nursing facility or the like, since the contact surface is large, it has been difficult to open and close the shoji due to the weight of the glass. In such a case, usually, a fitting that opens and closes fully automatically is used, but a dedicated design fitting is required, and also, since a large space for accommodating a fully automatic opening and closing mechanism is essential inside the upper frame, a large-scale construction and design including the building part were required.

[0034] Further, in the present embodiment, in a fitting 1 including a frame body 2, a shoji 10 slidably movable inside the frame body 2, and two door wheels 6A and 6B respectively provided at both ends in the contact direction of the lower frames 32 and 42 of the shoji 10 for movably supporting the shoji 10 inside the frame body 2, a drive unit 7 including a drive wheel 73 that rotates by power is provided between the two door wheels 6A and 6B in the contact direction, and a method for modifying the fitting 1 can be provided.

[0035] Thereby, by simply installing the drive unit 7 on the lower frame of the existing fitting, the existing fitting can be easily made into a fitting equipped with an electric assist mode. Large-scale construction and building renovation work are also unnecessary. Further, even when the drive unit 7 is provided on the existing fitting, it is not necessary to readjust the height of the door wheel after providing the drive unit 7. With this configuration, while making use of the conventional manually operable door wheel, the fitting 1 can be automated by the drive unit 7. The fitting 1 is a fitting that combines the advantages of both a manually operable fitting and an electrically operable fitting.

[0036] Also. For example, when the inner shoji 3 is opened forcefully, it can be assumed that the inner frame 33 of the inner shoji 3 hits the vertical frame 23. In such a case, the load sensor 76 detects a load equal to or greater than a second predetermined value, which is greater than a first predetermined value that is a predetermined value for opening and closing the shoji 10. When the load detection / arithmetic unit 91 of the control device 9 receives such a high load equal to or greater than the second predetermined value, the motor control unit 92 outputs a stop command to the small motor 71.

[0037] With this configuration, even if the shoji screen 10 is forcefully opened and hits a part of the furniture, the small motor 71 can be prevented from continuing to rotate and the drive unit 7 from continuing to drive accordingly. Conversely, even if an attempt is made to close the open shoji screen 10 and it hits the frame body 2 forcefully, the motor control unit 92 can similarly output a stop command to the small motor 71 to prevent the small motor 71 from idling.

[0038] (Automatic ventilation mode) Next, the automatic ventilation mode in which the control device 9 controls the shoji screen 10 to ventilate the room will be described. As described above, two holes corresponding to the solenoid lock 8 are provided in the longitudinal direction of the running rail 221. The two locations are the first position and the second position described above, and the solenoid lock 8 can be locked at the two locations. As a scenario for using the automatic ventilation mode, for example, when out and about and the shoji screen 10 is currently locked in the first position but it is desired to ventilate the room by the time of returning home, etc. are assumed.

[0039] The lock control unit 93 of the control device 9 that has received the automatic ventilation mode via the communication device 11 unlocks the solenoid lock 8 at the first position. Next, the motor control unit 92 outputs a command to start driving to the small motor 71. The small motor 71 that has received the command rotates the rotor by a certain amount according to a predetermined distance toward the previously provided second position. By the power of the drive unit 7, the shoji screen 10 slides to the second position. After the sliding movement of the shoji screen 10 is completed, the lock control unit 93 outputs a locking command to the solenoid lock 8. The shoji screen 10 is locked at the second position by the solenoid lock 8 that has received the locking command.

[0040] With this configuration, it is possible to safely ventilate an unmanned indoor space through remote operation while ensuring security. Also, after the automatic ventilation mode ends, the solenoid lock 8 can be unlocked again via the communication device 11, the sliding door 10 can be returned to the first position by the motor control unit 92, and the solenoid lock 8 can be locked at the first position by the lock control unit 93. By having the control device 9 cooperate with the smart home system, the operation of the furniture 1 can be controlled remotely, improving the convenience of daily life.

[0041] The present disclosure is not limited to the above-described embodiments and can be modified as appropriate. For example, in this embodiment, the furniture 1 does not use a crescent lock and the sliding door 10 is locked and unlocked only by the solenoid lock 8, but the present disclosure is not limited to this. For example, when not using the above-described automatic ventilation mode, the furniture 1 of the present disclosure may be configured using only a crescent lock without using the solenoid lock 8. Also, a crescent lock and the solenoid lock 8 may be used in combination.

[0042] Also, in this embodiment, the solenoid lock 8 is provided on the lower frame 32 and the lower frame 42, but the installation location of the solenoid lock 8 is not limited to this. It may be provided anywhere as long as the sliding door 10 can be locked, and for example, the solenoid lock 8 may be provided on the drive unit 7.

[0043] Also, in this embodiment, the power of the small motor 71 is transmitted to the drive roller 73 via the gear unit 72, but the configuration for transmitting the power of the small motor 71 to the drive roller 73 is not limited to this. For example, a wire winding shaft may be provided on the central axis C1 of the drive roller 73, the output shaft of the small motor may be connected to this wire winding shaft, and the drive roller 73 may be rolled by winding the wire connected to the left and right vertical frames 23 and 24 around the wire winding shaft by the rotation of the output shaft. In this case, since a wire is used for driving, there is an effect of preventing the drive roller 73 from slipping. Also, the power may be transmitted directly from the output shaft of the small motor to the drive roller 73. In this case, there is an effect of reducing the number of components.

[0044] In addition, in the present embodiment, a remote operation is performed using the communication device 11 to control the fitting 1, but a wall switch or the like may be used in combination for operating the fitting 1. The solenoid lock 8 may be unlocked and locked not only via the communication device 11 but also, for example, by a wall switch provided beside the fitting 1.

[0045] [Aspect 1] A frame body, A shoji door slidably movable within the frame body, Two door wheels respectively provided at both ends in the finding direction of the lower frame of the shoji door, for movably supporting the shoji door within the frame body, A drive unit provided on the lower frame so as to be positioned between the two door wheels in the finding direction, and including a drive door wheel that rotates by power, The two door wheels are fittings that roll following the drive door wheel of the drive unit. [Aspect 2] The drive unit Further includes a motor that generates power, And a battery that supplies power to the motor. The fitting according to Aspect 1. [Aspect 3] The fitting Further includes a control device that controls the drive unit, And a communication device capable of communicating with the control device. The fitting according to Aspect 2. [Aspect 4] The drive unit further includes a load sensor that detects the load of the motor, The control device controls the drive of the motor according to the load detected by the load sensor. The fitting according to Aspect 2 or 3. [Aspect 5] The control device starts the drive of the motor when the load detected by the load sensor becomes equal to or greater than a first predetermined value, and stops the drive of the motor when the load detected by the load sensor becomes less than the first predetermined value. The fitting according to Aspect 4. [Aspect 6] The fitting according to aspect 5, wherein the control device stops driving the motor when the load detected by the load sensor becomes equal to or greater than a second predetermined value that is greater than the first predetermined value. [Aspect 7] The fitting further includes an electric lock mechanism that locks the shoji at a predetermined position with respect to the frame body and releases the lock of the shoji. The fitting according to any one of aspects 3 to 6, wherein the control device controls the operation of the electric lock mechanism. [Aspect 8] The predetermined position is a first position where the shoji is in a closed state and a second position where the shoji is in an open state and security and ventilation can be ensured. The fitting according to any one of aspects 3 to 7, wherein the control device controls the drive unit to move the shoji to the second position and then controls the electric lock mechanism to lock the shoji. [Aspect 9] The two guide wheels are provided with a height adjustment mechanism. The fitting according to any one of aspects 1 to 8, wherein the drive unit further includes a biasing mechanism that biases the drive guide wheel onto a rail provided on the lower frame of the frame body. [Aspect 10] A frame body, A shoji that is slidably movable within the frame body, In a fitting including two guide wheels respectively provided at both ends in the finding direction of the lower frame of the shoji and supporting the shoji so as to be movable within the frame body, A method for renovating a fitting, comprising providing a drive unit including a drive guide wheel that rotates by power between the two guide wheels in the finding direction.

Explanation of Signs

[0046] 1 Fitting, 2 Frame body, 6 Guide wheel (driven guide wheel), 7 Drive unit, 9 Control device, 10 Shoji, 32, 42 Lower frame, 71 Small motor (motor), 73 Drive guide wheel, 75 Battery, 221 Travel rail (rail)

Claims

1. a frame body, a shoji door slidably movable within the frame body, two door wheels respectively provided at both ends in the finding direction of the lower frame of the shoji door, and supporting the shoji door movably within the frame body, a drive unit provided on the lower frame so as to be located between the two door wheels in the finding direction, and including a drive wheel that rotates by power, the two door wheels are fittings that roll following the drive wheel of the drive unit.

2. the drive unit further includes a motor that generates power, and a battery that supplies power to the motor, the fitting according to claim 1.

3. the fitting further includes a control device that controls the drive unit, and a communication device capable of communicating with the control device, the fitting according to claim 2.

4. the drive unit further includes a load sensor that detects the load of the motor, the control device controls the drive of the motor according to the load detected by the load sensor, the fitting according to claim 3.

5. the control device starts the drive of the motor when the load detected by the load sensor becomes equal to or greater than a first predetermined value, and stops the drive of the motor when the load detected by the load sensor becomes less than the first predetermined value, the fitting according to claim 4.

6. the control device stops the drive of the motor when the load detected by the load sensor becomes equal to or greater than a second predetermined value that is greater than the first predetermined value, the fitting according to claim 5.

7. the fitting further includes an electric lock mechanism that locks the shoji door at a predetermined position with respect to the frame body and releases the lock of the shoji door, the control device controls the operation of the electric lock mechanism, the fitting according to claim 3.

8. the predetermined positions are a first position where the shoji door is in a closed state and a second position where the shoji door is in an open state and security and ventilation can be ensured, the control device controls the drive unit to move the shoji door to the second position, and then controls the electric lock mechanism to lock the shoji door, the fitting according to claim 7.

9. the two door wheels are provided with a height adjustment mechanism, the drive unit further includes a biasing mechanism that biases the drive wheel onto a rail provided on the lower frame of the frame body, the fitting according to claim 1 or 2. 【Claim 】 a frame body, a shoji door slidably movable within the frame body, In a fitting provided with two door wheels respectively provided at both ends in the finding direction in the lower frame of the shoji, and supporting the shoji movably within the frame body, A method for modifying a fitting, comprising providing a drive unit having a drive door wheel that rotates by power between the two door wheels in the finding direction.

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