Door locking and unlocking device and building

Abstract

To provide a door locking and unlocking device capable of restricting unlocking of a door by a target person.SOLUTION: The door locking and unlocking device comprises: a lock part that locks and unlocks a door; a plurality of operation parts that are provided on an inner face of the door, and in which a locking and unlocking operation is carried out; and a control part that controls the locking and unlocking of the door by the lock part. The control part unlocks the door by the lock part when the following unlocking conditions are satisfied: an unlocking operation time, which is a time required for unlocking the plurality of operation parts, is less than a prescribed operation time; and an unlocking operation order, which is an order in which the unlocking operations of the plurality of operation parts are carried out, is in a prescribed operation order.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a door unlocking device and a building. [Background technology]

[0002] There are known buildings equipped with door unlocking devices that unlock doors. For example, in the door unlocking device described in Patent Document 1, if one of two thumb turns is rotated to the unlock position and the other thumb turn is not operated within a predetermined time, both thumb turns will automatically return to the locked state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-121110 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is not desirable for users such as children or dementia patients (hereinafter referred to as "subjects") to unlock doors without a guardian or caregiver present. For this reason, it is required that the unlocking of the door unlocking device be restricted when the subject performs the unlocking operation. [Means for solving the problem]

[0005] (1) A door unlocking device that solves the above problem is a door unlocking device that includes a locking unit that unlocks the door, a plurality of operating units that are provided on the inner surface of the door and perform the unlocking operation, and a control unit that controls the unlocking of the door by the locking unit, and the control unit unlocks the door by the locking unit when unlocking conditions are met, including that the unlocking operation time, which is the time required to perform the unlocking operation of the plurality of operating units, is less than a predetermined operation time, and that the unlocking operation order, which is the order in which the unlocking operations of the plurality of operating units were performed, is a predetermined operation order.

[0006] When a target person performs an unlocking operation, it is expected that the unlocking operation time will be longer than when a non-target person performs the unlocking operation due to reasons such as difficulty in reaching the operation unit or weak hand strength. Furthermore, when a target person performs an unlocking operation, the unlocking operation sequence may not necessarily be the predetermined sequence. According to the above configuration, the door is unlocked by the lock unit if the unlocking operation time is less than the predetermined operation time and the unlocking operation sequence is the predetermined sequence. Therefore, unlocking of the door by the target person can be restricted.

[0007] (2) In the door unlocking device of (1) above, a pressure sensor is attached to an inner handle provided on the inner surface of the door and detects the pressure when a user grips the inner handle, and the unlocking condition further includes that the pressure detected by the pressure sensor is within a predetermined pressure range.

[0008] When a subject grips the inside handle, it is expected that the pressure detected by the pressure sensor will be outside the predetermined pressure range due to reasons such as a weak grip or difficulty in controlling the grip. With the above configuration, the door will be unlocked by the lock unit if the unlocking operation time is less than the predetermined operation time, the unlocking operation sequence is the predetermined operation sequence, and the pressure detected by the pressure sensor is within the predetermined pressure range. Therefore, unlocking of the door by the subject can be more reliably restricted.

[0009] (3) In the door unlocking device of (2) above, the predetermined pressure range is set to be greater than a first pressure and less than a second pressure that is greater than the first pressure. If the subject is a child or a female with dementia, it is expected that the pressure detected by the pressure sensor will be small because the subject has weak grip strength. If the subject is a male with dementia, it is expected that the pressure detected by the pressure sensor will be large because it is difficult to control the grip strength. For this reason, for example, if the predetermined pressure range is set to be less than the second pressure, it may be possible to restrict the unlocking of the door if the subject is a male with dementia, but it may not be possible to restrict the unlocking of the door if the subject is a child or a female with dementia. Also, for example, if the predetermined pressure range is set to be greater than the first pressure, it may be possible to restrict the unlocking of the door if the subject is a child or a female with dementia, but it may not be possible to restrict the unlocking of the door if the subject is a male with dementia.

[0010] In contrast, with the above configuration, the predetermined pressure range is set to be greater than the first pressure and less than the second pressure. That is, both a lower limit and an upper limit are set as the predetermined pressure range. Therefore, unlocking of the door by the subject can be restricted both when the subject is a child or a female with dementia and when the subject is a male with dementia. Therefore, unlocking of the door by the subject can be more appropriately restricted.

[0011] (4) In the door unlocking device of any one of (1) to (3) above, the control unit causes the lock unit to lock the door when the unlocking condition is not met. According to this configuration, if the unlocking condition is not met, the door is locked by the lock unit, so that the door can be locked reliably.

[0012] (5) In the door unlocking device of any one of (1) to (4) above, the control unit disables the user from operating the operation unit when the unlocking condition is not met. According to this configuration, if the unlocking condition is not met, the user is prevented from operating the operation unit, thereby restricting the target person from performing the unlocking operation again.

[0013] (6) In any one of the door unlocking devices (1) to (5) above, when an emergency signal is input from the abnormality detection unit, the control unit forcibly causes the lock unit to unlock the door regardless of whether the unlocking conditions are met.

[0014] According to this configuration, in an emergency, the door is forcibly unlocked by the lock unit regardless of whether the unlocking condition is met, so that the target person can open the door in an emergency.

[0015] (7) A building that solves the above problem includes any one of the door unlocking devices (1) to (6) above. When a target person performs an unlocking operation, it is expected that the unlocking operation time will be longer than when a non-target person performs the unlocking operation due to reasons such as difficulty in reaching the operation unit or weak hand strength. Furthermore, when a target person performs an unlocking operation, the unlocking operation sequence may not necessarily be the predetermined sequence. According to the above configuration, the door is unlocked by the lock unit if the unlocking operation time is less than the predetermined operation time and the unlocking operation sequence is the predetermined sequence. Therefore, unlocking of the door by the target person can be restricted. [Effects of the Invention]

[0016] The building door of the present invention can restrict unlocking of the door by a target person. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram showing a door and a door unlocking device for a building; [Figure 2] FIG. 2 is a block diagram showing the configuration of a door unlocking device. [Figure 3] 4 is a flowchart showing an unlocking process performed by the door unlocking device. [Figure 4] 1 is a table showing a family structure in a specific example. DETAILED DESCRIPTION OF THE INVENTION

[0018] A door unlocking device 10 and a building 100 of this embodiment will be described with reference to Figures 1 to 4. The building 100 of this embodiment is a residence. As shown in Figure 1, building 100 comprises a wall 110, a door frame 120 fitted into an opening 110a of wall 110, and a door 130 rotatably mounted on door frame 120 via a hinge (not shown).

[0019] The door frame 120 has a first side frame portion 121 extending in the vertical direction, a second side frame portion 122 extending in the vertical direction, and an upper frame portion 123 connecting the upper end of the first side frame portion 121 with the upper end of the second side frame portion 122. A first recess 121a and a second recess 121b are provided on the surface of the first side frame portion 121 facing the second side frame portion 122. The first recess 121a is located above the second recess 121b.

[0020] The door 130 includes a leaf 131 , an inside handle 132 , an outside handle (not shown), and a latch mechanism 133 . The door 131 has a first side surface 131a facing the first side frame portion 121, a second side surface 131b facing the second side frame portion 122, an inner surface 131c located on the indoor side, and an outer surface located on the outdoor side. The inner handle 132 is provided on the inner surface 131c of the door 131. The outer handle is provided on the outer surface of the door 131. In this embodiment, the inner handle 132 and the outer handle are each a lever-type handle.

[0021] The latch mechanism 133 has a latch bolt 133a and a latch driver 133b that drives the latch bolt 133a. The latch driver 133b is provided inside the door 131. The latch bolt 133a is driven by the latch driver 133b to move between a protruding position where it protrudes from the first side surface 131a of the door 131 and a non-protruding position where it is located inside the door 131. When the latch bolt 133a is in the protruding position, it is inserted into the first recess 121a of the door frame 120. When the latch bolt 133a is in the non-protruding position, it is not inserted into the first recess 121a of the door frame 120.

[0022] The inner handle 132 of this embodiment is a push-pull type handle. When a user pushes or pulls the inner handle 132 while gripping it, the latch bolt 133a moves from the extended position to the non-extended position. Therefore, when the door 130 is in an unlocked state, the user can open the door 130 by pushing or pulling the inner handle 132 while gripping it.

[0023] The building 100 of this embodiment is equipped with an abnormality detection unit 140 (see FIG. 2). Examples of the abnormality detection unit 140 include an earthquake detection unit that detects earthquakes and a fire detection unit that detects fires. When the abnormality detection unit 140 detects an abnormality such as an earthquake or a fire, it outputs an emergency signal to the control unit 16, which will be described later.

[0024] <Door unlocking device> As shown in FIGS. 1 and 2, a building 100 is equipped with a door unlocking device 10 that unlocks and locks a door 130. The door unlocking device 10 is equipped with a locking unit 12, a plurality of operation units 13, an operation detecting unit 14, a pressure sensor 15, and a control unit 16. The door unlocking device 10 of this embodiment is equipped with two locking units 12. In the following description, one of the two locking units 12 is referred to as a first locking unit 12a, and the other is referred to as a second locking unit 12b. The door unlocking device 10 of this embodiment is equipped with two operation units 13 as the plurality of operation units 13. In the following description, one of the two operation units 13 is referred to as a first operation unit 13a, and the other is referred to as a second operation unit 13b.

[0025] 1, the first locking portion 12a and the second locking portion 12b are each provided on the door 131. In this embodiment, the first locking portion 12a is provided above the inner handle 132. In this embodiment, the second locking portion 12b is provided below the inner handle 132.

[0026] The first lock unit 12a has a first deadbolt 21 and a first lock drive unit 22 that drives the first deadbolt 21. The first lock drive unit 22 is provided inside the door 131. The first deadbolt 21 is driven by the first lock drive unit 22 to move between a locked position where it protrudes from a first side surface 131a of the door 131 and an unlocked position where it is located inside the door 131. When the first deadbolt 21 is in the locked position, it is inserted into the first recess 121a of the door frame 120. When the first deadbolt 21 is in the unlocked position, it is not inserted into the first recess 121a of the door frame 120.

[0027] The second lock unit 12b has a second deadbolt 23 and a second lock drive unit 24 that drives the second deadbolt 23. The second lock drive unit 24 is provided inside the door 131. The second deadbolt 23 is driven by the second lock drive unit 24 to move between a locked position where it protrudes from the first side surface 131a of the door 131 and an unlocked position where it is located inside the door 131. When the second deadbolt 23 is in the locked position, it is inserted into the second recess 121b of the door frame 120. When the second deadbolt 23 is in the unlocked position, it is not inserted into the second recess 121b of the door frame 120.

[0028] The first locking unit 12a and the second locking unit 12b unlock and lock the door 130. More specifically, the door 130 is locked when at least one of the first deadbolt 21 and the second deadbolt 23 is positioned in the locked position. "At least one of the first deadbolt 21 and the second deadbolt 23" refers to "only the first deadbolt 21," "only the second deadbolt 23," or "both the first deadbolt 21 and the second deadbolt 23." The door 130 is unlocked when the first deadbolt 21 and the second deadbolt 23 are positioned in the unlocked position.

[0029] The first operating part 13a and the second operating part 13b are each provided on the door 131. In this embodiment, the first operating part 13a is provided above the inner handle 132. In this embodiment, the second operating part 13b is provided below the inner handle 132.

[0030] As shown in FIG. 2 , the first operating unit 13a includes a first thumb turn 31, a first operation drive unit 32 that drives the first thumb turn 31, and a first detection unit 33 connected to the first operation drive unit 32. The first thumb turn 31 is provided on the inner surface 131c of the door 131. The first operation drive unit 32 and the first detection unit 33 are provided inside the door 131. The first thumb turn 31 is switched between a locked state and an unlocked state by being rotated by a user or the first operation drive unit 32. An unlocking operation is performed by a user or the first operation drive unit 32 to switch the first thumb turn 31 from the locked state to the unlocked state. A locking operation is performed by a user or the first operation drive unit 32 to switch the first thumb turn 31 from the unlocked state to the locked state. The first detection unit 33 detects whether the first thumb turn 31 is in the locked state or the unlocked state.

[0031] The second operation unit 13b has a second thumb turn 34, a second operation drive unit 35 that drives the second thumb turn 34, and a second detection unit 36 ​​connected to the second operation unit 13b. The second thumb turn 34 is provided on the inner surface 131c of the door 131. The second operation drive unit 35 and the second detection unit 36 ​​are provided inside the door 131. The second thumb turn 34 is switched between a locked state and an unlocked state by being rotated by a user or the second operation drive unit 35. An unlocking operation is performed by a user or the second operation drive unit 35 to switch the second thumb turn 34 from a locked state to an unlocked state. A locking operation is performed by a user or the second operation drive unit 35 to switch the second thumb turn 34 from an unlocked state to a locked state. The second detection unit 36 ​​detects whether the second thumb turn 34 is in a locked state or an unlocked state.

[0032] The operation detection unit 14 is connected to the first detection unit 33 and the second detection unit 36. In this embodiment, the operation detection unit 14 is provided inside the inner handle 132. The operation detection unit 14 detects, from the detection result of the first detection unit 33, that the user has performed a locking operation or an unlocking operation on the first operation unit 13a. The operation detection unit 14 detects, from the detection result of the second detection unit 36, that the user has performed a locking operation or an unlocking operation on the second operation unit 13b.

[0033] The operation detection unit 14 detects an unlocking operation time, which is the time required for the unlocking operation of the multiple operation units 13. The operation detection unit 14 of this embodiment detects the time from when the first operation unit 13a is operated to unlock until the second operation unit 13b is operated to unlock, or the time from when the second operation unit 13b is operated to unlock until the first operation unit 13a is operated to unlock, as the unlocking operation time.

[0034] Furthermore, the operation detection unit 14 detects the unlocking operation order, which is the order in which the unlocking operations of the multiple operation units 13 were performed. In this embodiment, the operation detection unit 14 detects whether the unlocking operations were performed in the order from the first operation unit 13a to the second operation unit 13b, or from the second operation unit 13b to the first operation unit 13a.

[0035] Pressure sensor 15 is attached to inner handle 132. More specifically, pressure sensor 15 is attached to the surface of inner handle 132 that faces inner surface 131c of door 131. Pressure sensor 15 detects the pressure when a user grips inner handle 132.

[0036] The control unit 16 is provided in a location separate from the door 130. For example, the control unit 16 is provided in a shoe closet (not shown). The control unit 16 includes one or more central processing units (CPUs) or micro processing units (MPUs) that operate according to a program. The control unit 16 may be configured as a circuit including a CPU or MPU, a circuit including an application specific integrated circuit (ASIC), or a combination of these circuits. The control unit 16 may include memory such as RAM and ROM. The memory stores a program configured to cause the CPU to execute processing.

[0037] The control unit 16 is connected to the operation detection unit 14. The control unit 16 acquires the unlocking operation time and the unlocking operation sequence from the operation detection unit 14. The control unit 16 is connected to the pressure sensor 15. The control unit 16 acquires the pressure detected by the pressure sensor 15. The control unit 16 is connected to the lock unit 12. The control unit 16 controls the unlocking and locking of the door 130 by the lock unit 12. The control unit 16 of this embodiment is connected to the first lock unit 12a and the second lock unit 12b. The control unit 16 of this embodiment controls the unlocking and locking of the door 130 by the first lock unit 12a and the second lock unit 12b.

[0038] When an unlocking condition, which will be described later, is met, the control unit 16 causes the lock unit 12 to unlock the door 130. Specifically, when the unlocking condition is met, the control unit 16 outputs an unlock command signal to each of the first lock drive unit 22 and the second lock drive unit 24. When the unlock command signal is input from the control unit 16, the first lock drive unit 22 drives the first deadbolt 21 so that the first deadbolt 21 is positioned in the unlocked position. When the unlock command signal is input from the control unit 16, the second lock drive unit 24 drives the second deadbolt 23 so that the second deadbolt 23 is positioned in the unlocked position. This causes the door 130 to be unlocked by the first lock unit 12a and the second lock unit 12b.

[0039] The unlocking conditions in this embodiment include that the unlocking operation time is less than a predetermined operation time, the unlocking operation sequence is a predetermined operation sequence, and the pressure detected by the pressure sensor 15 is within a predetermined pressure range. Therefore, when the unlocking operation time is less than the predetermined operation time, the unlocking operation sequence is a predetermined operation sequence, and the pressure detected by the pressure sensor 15 is within a predetermined pressure range, the control unit 16 unlocks the door 130 by the first lock unit 12a and the second lock unit 12b.

[0040] The predetermined operation time is set based on the time required for the target person and non-target person to operate the multiple operation units 13 to unlock. If the target person is a child, they have difficulty operating the first operation unit 13a located at the top due to their short stature. Also, if the target person is elderly, they have weak hand strength and therefore have difficulty operating the operation unit 13. For this reason, it is expected that the unlocking operation time required by the target person will be longer than the unlocking operation time required by a non-target person. The predetermined operation time is set to be shorter than the time required for the target person to operate the multiple operation units 13 to unlock, and longer than the time required for a non-target person to operate the multiple operation units 13 to unlock.

[0041] The predetermined operation order is set to an order different from the order expected as the order in which the subject person will operate the operation units 13 to unlock the door. For example, if the subject person is a child, the child is short and therefore finds it easier to operate the second operation unit 13b located at the bottom than the first operation unit 13a located at the top. For this reason, it is expected that the subject person will operate the unlocking operation in the order of the second operation unit 13b first and then the first operation unit 13a. In this case, the predetermined operation order is set to the order of the first operation unit 13a first and then the second operation unit 13b.

[0042] The predetermined pressure range is set based on the grip strength of the subject. If the subject is a child or an elderly woman, their grip strength will be weak and the force with which they grip the inner handle 132 will be relatively small. If the subject is an elderly man with dementia, their declining mental ability will make it difficult for them to control their grip strength and so the force with which they grip the inner handle 132 will be relatively large. The predetermined pressure range in this embodiment is set to be greater than the first pressure and less than a second pressure that is greater than the first pressure. The first pressure is set based on the grip strength of a child or an elderly woman. The second pressure is set based on the grip strength of an elderly man.

[0043] In this embodiment, when an emergency signal is input from the abnormality detection unit 140, the control unit 16 forcibly unlocks the door 130 using the first lock unit 12a and the second lock unit 12b, regardless of whether the unlocking conditions are met.

[0044] When the unlocking conditions are not met, the control unit 16 causes the lock unit 12 to lock the door 130. Specifically, the control unit 16 determines that the unlocking conditions are not met when at least one of the following conditions is met: the unlocking operation time is equal to or longer than a predetermined operation time, the unlocking operation sequence is not a predetermined operation sequence, and the pressure detected by the pressure sensor 15 is not within a predetermined pressure range. When the control unit 16 determines that the unlocking conditions are not met, the control unit 16 outputs a lock command signal to each of the first lock drive unit 22 and the second lock drive unit 24. When the lock command signal is input from the control unit 16, the first lock drive unit 22 drives the first deadbolt 21 so that the first deadbolt 21 is positioned in the locked position. When the lock command signal is input from the control unit 16, the second lock drive unit 24 drives the second deadbolt 23 so that the second deadbolt 23 is positioned in the locked position. This causes the door 130 to be locked by the first lock unit 12a and the second lock unit 12b.

[0045] In this embodiment, the control unit 16 controls the first operation unit 13a and the second operation unit 13b. When the unlocking condition is not met, the control unit 16 outputs a locking operation command signal to each of the first operation drive unit 32 and the second operation drive unit 35.

[0046] When a locking operation command signal is input from control unit 16, first operation drive unit 32 places first thumb turn 31 in a locked state. Furthermore, when a locking operation command signal is input from control unit 16, first operation drive unit 32 locks the rotation of first thumb turn 31, thereby preventing the user from operating first thumb turn 31. In this way, control unit 16 prevents the user from operating first operation unit 13a when the unlocking conditions are not met.

[0047] When a locking operation command signal is input from control unit 16, second operation drive unit 35 places second thumb turn 34 in a locked state. Furthermore, when a locking operation command signal is input from control unit 16, second operation drive unit 35 locks the rotation of second thumb turn 34, thereby preventing the user from operating second thumb turn 34. In this way, control unit 16 prevents the user from operating second operation unit 13b when the unlocking condition is not met.

[0048] <Unlocking process> A description will now be given of the unlocking process performed by the door unlocking device 10. The unlocking process is started when the user grips the inside handle 132 after performing the unlocking operation on the first thumb turn 31 and the second thumb turn 34.

[0049] 3, in step S1, the control unit 16 determines whether the unlocking operation time is less than a predetermined operation time. If the unlocking operation time is less than the predetermined operation time (YES in step S1), the process proceeds to step S2. If the unlocking operation time is equal to or greater than the predetermined operation time (NO in step S1), the process proceeds to step S3. In step S3, the control unit 16 determines that the unlocking condition is not met, locks the door 130 using the first lock unit 12a and the second lock unit 12b, and disables operation of the first thumb turn 31 and the second thumb turn 34.

[0050] In step S2, the control unit 16 determines whether the unlocking operation sequence is a predetermined operation sequence. If the unlocking operation sequence is a predetermined operation sequence (YES in step S2), the process proceeds to step S4. If the unlocking operation sequence is not a predetermined operation sequence (NO in step S2), the process proceeds to step S3.

[0051] In step S4, the control unit 16 determines whether the pressure detected by the pressure sensor 15 is within a predetermined pressure range. If the pressure detected by the pressure sensor 15 is within the predetermined pressure range (YES in step S4), the process proceeds to step S5. If the pressure detected by the pressure sensor 15 is not within the predetermined pressure range (NO in step S4), the process proceeds to step S3.

[0052] In step S5, the control unit 16 determines that the unlocking conditions are met and unlocks the door 130 using the first lock unit 12a and the second lock unit 12b. [Operation of this embodiment] The operation of this embodiment will be described with a specific example.

[0053] As shown in the table of FIG. 4, for example, suppose that building 100 is occupied by an 80-year-old grandfather, a 78-year-old grandmother, a 45-year-old father, a 44-year-old mother, a 16-year-old eldest son, a 13-year-old eldest daughter, and a 6-year-old second son. The grandfather and grandmother suffer from dementia. The subjects in this specific example are the grandfather, grandmother, and second son. The grip strengths of the residents have been measured in advance. The grandfather's grip strength is 35 kg, the grandmother's grip strength is 22 kg, the father's grip strength is 45 kg, the mother's grip strength is 28 kg, the eldest son's grip strength is 38 kg, the eldest daughter's grip strength is 24 kg, and the second son's grip strength is 9 kg.

[0054] In the specific example, the predetermined operation time is set to 3 seconds. In the specific example, the predetermined operation sequence is set from the first operation unit 13a to the second operation unit 13b. In the specific example, the first pressure is set to 23 kg and the second pressure is set to 30 kg. Therefore, the predetermined pressure range is set to be greater than 23 kg and less than 30 kg. The non-target individuals, the father, mother, eldest son, and eldest daughter, are aware of the predetermined operation time, the predetermined operation sequence, and the predetermined pressure range.

[0055] A case will be described where a grandfather, who is a target person, attempts to unlock door 130. In this case, since the grandfather, who is elderly, takes time to perform the unlocking operation, it is expected that the unlocking operation time will be 3 seconds or more. Furthermore, the grandfather may perform the unlocking operation in the order of second operating unit 13b and first operating unit 13a. Furthermore, since the grandfather is a male with dementia and has difficulty controlling his grip strength, it is expected that the pressure detected by pressure sensor 15 when the grandfather grips inside handle 132 will be 30 kg or more. In this case, the unlocking condition is not met, and therefore the target grandfather's unlocking of door 130 is restricted.

[0056] A case will be described where a grandmother, who is a target person, attempts to unlock door 130. In this case, since the grandmother, who is elderly, takes time to perform the unlocking operation, it is expected that the unlocking operation time will be three seconds or more. Furthermore, the grandmother may perform the unlocking operation in the order of second operating unit 13b and first operating unit 13a. Furthermore, since the grandmother, who is an elderly woman, has a weak grip strength, it is expected that the pressure detected by pressure sensor 15 when the grandmother grips inside handle 132 will be 23 kg or less. In this case, the unlocking condition is not met, and therefore unlocking of door 130 by the grandmother, who is a target person, is restricted.

[0057] A case will now be described in which the father, a non-target person, attempts to unlock the door 130. In this case, the father can perform the unlocking operation smoothly, so the unlocking operation time is less than three seconds. Furthermore, because the father understands the predetermined operating procedure, he performs the unlocking operation in the order of first operating unit 13a to second operating unit 13b. Furthermore, although the father's grip strength is 30 kg or more, he is able to control his grip strength, so when the father grips the inside handle 132, the pressure detected by pressure sensor 15 is greater than 23 kg and less than 30 kg. In this case, the unlocking condition is met, so the father, a non-target person, is not restricted from unlocking the door 130. The same applies to a case in which the eldest son, a non-target person, attempts to unlock the door 130.

[0058] A case will now be described in which the mother, who is not a target person, attempts to unlock the door 130. In this case, the mother can perform the unlocking operation smoothly, so the unlocking operation time is less than 3 seconds. Furthermore, because the mother understands the predetermined operating sequence, she performs the unlocking operation in the order of first operating unit 13a to second operating unit 13b. Furthermore, when the mother grips the inside handle 132, the pressure detected by pressure sensor 15 is greater than 23 kg and less than 30 kg. In this case, the unlocking condition is met, so the unlocking of the door 130 by the mother, who is not a target person, is not restricted. The same applies to a case in which the eldest daughter, who is not a target person, attempts to unlock the door 130.

[0059] A case will be described where the second son, who is a target, attempts to unlock the door 130. In this case, since the second son, who is a child, takes time to perform the unlocking operation, it is expected that the unlocking operation time will be 3 seconds or more. Furthermore, as described above, it is expected that the second son, who is a child, will perform the unlocking operation in the order of second operating unit 13b and then first operating unit 13a. Furthermore, since the second son, who is a child, has a weak grip strength, it is expected that the pressure detected by pressure sensor 15 when the second son grips inside handle 132 will be 23 kg or less. In this case, the unlocking condition is not met, and therefore the second son, who is a target, is restricted from unlocking the door 130.

[0060] In this way, when a target person attempts to unlock the door 130, the unlocking condition is not met, and therefore the target person is restricted from unlocking the door 130. On the other hand, when a non-target person attempts to unlock the door 130, the unlocking condition is met, and therefore the non-target person is not restricted from unlocking the door 130.

[0061] [Effects of this embodiment] The effects of this embodiment will be described. (1) The door unlocking device 10 includes a lock unit 12 that unlocks the door 130, a plurality of operation units 13 that are provided on the inner surface 131c of the door 131 and that perform the operation of unlocking the door 130, and a control unit 16 that controls the unlocking of the door 130 by the lock unit 12. When an unlocking condition is met, the control unit 16 causes the lock unit 12 to unlock the door 130. The unlocking condition includes that the unlocking operation time, which is the time required for the unlocking operation of the plurality of operation units 13, is less than a predetermined operation time, and that the unlocking operation order, which is the order in which the unlocking operations of the plurality of operation units 13 are performed, is a predetermined operation order.

[0062] When a target person performs an unlocking operation, it is expected that the unlocking operation time will be longer than when a non-target person performs the unlocking operation due to reasons such as difficulty in reaching the operation unit 13 or weak hand strength. Furthermore, when a target person performs an unlocking operation, the unlocking operation sequence will not necessarily be a predetermined sequence. According to the above configuration, if the unlocking operation time is less than the predetermined operation time and the unlocking operation sequence is a predetermined sequence, the lock unit 12 unlocks the door 130. Therefore, unlocking of the door 130 by the target person can be restricted.

[0063] (2) The door unlocking device 10 is equipped with a pressure sensor 15 that is attached to an inner handle 132 provided on the inner surface 131c of the door 131 and detects the pressure when a user grips the inner handle 132. The unlocking condition further includes that the pressure detected by the pressure sensor 15 is within a predetermined pressure range.

[0064] When the subject grips the inside handle 132, it is expected that the pressure detected by the pressure sensor 15 will be outside the predetermined pressure range due to reasons such as a weak grip or difficulty in controlling the grip. According to the above configuration, the door 130 is unlocked by the lock unit 12 when the unlocking operation time is less than the predetermined operation time, the unlocking operation sequence is the predetermined operation sequence, and the pressure detected by the pressure sensor 15 is within the predetermined pressure range. Therefore, the subject can be more reliably restricted from unlocking the door 130.

[0065] (3) If the subject is a child or a female with dementia, it is expected that the pressure detected by pressure sensor 15 will be small because the subject has weak grip strength. If the subject is a male with dementia, it is expected that the pressure detected by pressure sensor 15 will be large because it is difficult for the subject to control his / her grip strength. For this reason, for example, if the predetermined pressure range is set to be less than the second pressure, it may be possible to restrict the unlocking of door 130 if the subject is a male with dementia, but it may not be possible to restrict the unlocking of door 130 if the subject is a child or a female with dementia. Also, for example, if the predetermined pressure range is set to be greater than the first pressure, it may be possible to restrict the unlocking of door 130 if the subject is a child or a female with dementia, but it may not be possible to restrict the unlocking of door 130 if the subject is a male with dementia.

[0066] In contrast, in this embodiment, the predetermined pressure range is set to be greater than the first pressure and less than the second pressure. That is, both a lower limit and an upper limit are set as the predetermined pressure range. Therefore, unlocking of the door 130 by the subject can be restricted both when the subject is a child or a female dementia patient and when the subject is a male dementia patient. Therefore, unlocking of the door 130 by the subject can be more appropriately restricted.

[0067] (4) If the unlocking condition is not met, the control unit 16 causes the lock unit 12 to lock the door 130. This ensures that the door 130 is locked. (5) If the unlocking condition is not met, the control unit 16 disables the user from operating the operation unit 13. This makes it possible to restrict the target person from performing the unlocking operation again.

[0068] (6) When an emergency signal is input from the abnormality detection unit 140, the control unit 16 forcibly causes the lock unit 12 to unlock the door 130, regardless of whether the unlocking conditions are met. According to this configuration, in an emergency, the lock unit 12 forcibly unlocks the door 130, regardless of whether the unlocking conditions are met. Therefore, in an emergency, the target person can open the door 130 and go outside the building 100.

[0069] (7) The door unlocking device 10 has, as the multiple operation units 13, a first operation unit 13a located above the inner handle 132 and a second operation unit 13b located below the inner handle 132. If the subject is a child, the subject is short and therefore it is easier to operate the second operation unit 13b located below than the first operation unit 13a located above. For this reason, it is expected that the subject will perform the unlocking operation in the order of the second operation unit 13b and then the first operation unit 13a. The predetermined operation order set as the unlocking condition in this embodiment is the order of the first operation unit 13a to the second operation unit 13b. Therefore, when the subject is a child, it is possible to more reliably restrict the subject from unlocking the door 130.

[0070] (8) For example, it is conceivable to determine whether the user performing the unlocking operation is a target person by facial recognition, fingerprint recognition, input of a PIN number, or the like. However, in these cases, it is necessary to add relatively large devices such as a camera, fingerprint authentication device, and numeric keypad. In contrast, this embodiment utilizes the user's physical ability and intellectual ability, so it is possible to restrict the target person from unlocking the door 130 without adding large devices. Therefore, it is possible to avoid the design around the door 130 being impaired by the added devices.

[0071] In this embodiment, the operation detection unit 14 is built into the inner handle 132, and the pressure sensor 15 is attached to the back surface of the inner handle 132. Therefore, the design of the inner handle 132 is maintained, and the installation of the door unlocking device 10 is improved.

[0072] (9) The user can select any location for installing the control unit 16. Therefore, for example, by placing the control unit 16 in a shoe closet as in this embodiment, it is possible to avoid impairing the design around the door 130.

[0073] (10) Since the door 130 is unlocked based on data such as the unlocking operation time and pressure, unlocking of the door 130 by a target person can be restricted with high precision. <Example of change> The above-described embodiments are examples of possible forms of the door unlocking device 10 and the building 100, and are not intended to limit the forms. The door unlocking device 10 and the building 100 may take forms different from those illustrated in the above-described embodiments. Examples of such forms include forms in which part of the configuration of the embodiments is replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Modified examples of the embodiments are shown below.

[0074] The building 100 is not limited to a house. The building 100 may be, for example, a nursing home or a childcare facility. The door 130 may be provided between two rooms in the building 100. In this case, the inner surface 131c of the door 131 faces the room where the target person is located.

[0075] The inside handle 132 is not limited to a lever-type handle. The inside handle 132 may be any handle that is gripped by a user, such as a doorknob. In the above embodiment, the door unlocking device 10 has two locking units 12, but is not limited to this. The door unlocking device 10 may have one locking unit 12, or three or more locking units 12.

[0076] In the above embodiment, the door unlocking device 10 includes two operating units 13 as the plurality of operating units 13, but this is not limiting. The door unlocking device 10 may include three or more operating units 13.

[0077] The door unlocking device 10 does not need to be equipped with the pressure sensor 15. In this case, the unlocking conditions include that the unlocking operation time is less than a predetermined operation time and that the unlocking operation sequence is a predetermined operation sequence. The unlocking conditions do not include that the pressure detected by the pressure sensor 15 is within a predetermined pressure range. This modified example also provides at least the same effect as effect (1) of the above embodiment.

[0078] The control unit 16 may perform the determinations in steps S1, S2, and S4 all at once, and then lock the door 130 in step S3 or unlock the door 130 in step S5.

[0079] The predetermined operation order set as the unlocking condition is not limited to the order from the first operation unit 13a to the second operation unit 13b, but may be the order from the second operation unit 13b to the first operation unit 13a. The predetermined pressure range set as the unlocking condition may have only one of the lower and upper limits. This modification also provides at least the same advantages as the above-described embodiments (1) and (2).

[0080] In the above embodiment, the operation detector 14 is provided inside the inner handle 132 , but it may be provided in the control unit 16 . When the door unlocking device 10 has three or more operation units 13, the operation detection unit 14 may detect the unlocking operation time as follows.

[0081] The operation detection unit 14 may detect, for example, the time required from the first unlocking operation to the second unlocking operation as the unlocking operation time, or may detect the time required from the second unlocking operation to the third unlocking operation as the unlocking operation time.

[0082] The operation detection unit 14 may detect, for example, the average of the time required from the first unlocking operation to the second unlocking operation and the time required from the second unlocking operation to the third unlocking operation as the unlocking operation time.

[0083] The operation detection unit 14 may detect, for example, the time required from the first unlocking operation to the third unlocking operation as the unlocking operation time. The door unlocking device 10 may be provided with a reset button so that the lock can be released if a non-target person accidentally performs an operation that does not satisfy the unlocking conditions and the rotation of the operating unit 13 is locked. The reset button is provided in an inconspicuous part of the door 130.

[0084] When one of the two operation units 13 is operated to unlock, the control unit 16 may unlock the lock unit 12 corresponding to the one operation unit 13 that has been operated to unlock. Then, when the unlocking conditions are met, the control unit 16 may unlock the lock unit 12 corresponding to the other of the two operation units 13. When the unlocking conditions are not met, the control unit 16 may not unlock the lock unit 12 corresponding to the other of the two operation units 13, but may lock the lock unit 12 corresponding to one of the two operation units 13.

[0085] This specification discloses the following techniques: [Appendix 1] A door unlocking device comprising: a locking unit that unlocks a door; a plurality of operating units that are provided on the inner surface of the door and perform the unlocking operation; and a control unit that controls the unlocking of the door by the locking unit, wherein the control unit unlocks the door by the locking unit when unlocking conditions are met, including that the unlocking operation time, which is the time required to perform the unlocking operation of the plurality of operating units, is less than a predetermined operation time, and that the unlocking operation order, which is the order in which the unlocking operations of the plurality of operating units were performed, is a predetermined operation order.

[0086] [Appendix 2] The door unlocking device described in Appendix 1 is provided with a pressure sensor attached to an inner handle provided on the inner surface of the door, which detects the pressure when a user grips the inner handle, and the unlocking condition further includes that the pressure detected by the pressure sensor is within a predetermined pressure range.

[0087] [Appendix 3] In the door unlocking device described in Supplementary Note 2, the predetermined pressure range is set to be greater than a first pressure and less than a second pressure that is greater than the first pressure.

[0088] [Appendix 4] In the door unlocking device described in Supplementary Note 1, the control unit causes the lock unit to lock the door when the unlocking condition is not met.

[0089] [Appendix 5] In the door unlocking device described in Supplementary Note 1, the control unit disables the user from operating the operation unit when the unlocking condition is not met.

[0090] [Appendix 6] In the door unlocking device described in Appendix 1, when an emergency signal is input from the abnormality detection unit, the control unit forcibly causes the lock unit to unlock the door regardless of whether the unlocking conditions are met.

[0091] [Appendix 7] A building equipped with a door unlocking device according to any one of appendices 1 to 6. [Explanation of symbols]

[0092] 10...door unlocking device, 12...locking section, 13...operation section, 15...pressure sensor, 16...control section, 100...building, 130...door, 131...door frame, 131c...inner surface, 132...inner handle, 140...abnormality detection section

Claims

1. a lock unit that unlocks and locks the door; a plurality of operating units provided on the inner surface of the door for performing locking / unlocking operations; a control unit that controls unlocking and locking of the door by the lock unit; A door unlocking device comprising: The control unit of the door unlocking device unlocks the door using the lock unit when unlocking conditions are met, including that the unlocking operation time, which is the time required to operate the multiple operation units to unlock the door, is less than a predetermined operation time, and that the unlocking operation order, which is the order in which the unlocking operations of the multiple operation units are performed, is a predetermined operation order.

2. a pressure sensor attached to an inner handle provided on the inner surface of the door, the pressure sensor detecting the pressure when a user grips the inner handle; 2. The door unlocking device according to claim 1, wherein the unlocking condition further includes that the pressure detected by the pressure sensor is within a predetermined pressure range.

3. 3. The door unlocking device according to claim 2, wherein the predetermined pressure range is set to be greater than a first pressure and less than a second pressure that is greater than the first pressure.

4. The door unlocking device according to claim 1 , wherein the control unit causes the lock unit to lock the door when the unlocking condition is not met.

5. The door unlocking device according to claim 1 , wherein the control unit prevents a user from operating the operation unit when the unlocking condition is not met.

6. 2. The door unlocking device according to claim 1, wherein the control unit, when receiving an emergency signal from the abnormality detection unit, forcibly causes the lock unit to unlock the door regardless of whether the unlocking condition is met.

7. A building comprising the door unlocking device according to any one of claims 1 to 6.

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