JP2022184539A - washing machine - Google Patents

Abstract

To improve security of a lid lock device provided at a lid of a washing machine.SOLUTION: A washing machine includes: a lid provided at a housing in an openable/closable manner; a lid lock device for switching between a locked state for maintaining the lid in a closed state and a lock released state for making the lid openable; an operation part; password storage means for storing a password inputted from the operation part; lock release code storage means for storing a lock release code; and control means for maintaining the lid lock device in a locked state in the case where the password is inputted from the operation part, and for switching the lid lock device into the lock released state in the case where the password stored in the password storage means or the lock release code stored in the lock release code storage means is inputted from the operation part in the locked state. When the lid lock device is switched from the locked state to the lock released state by the lock release code being inputted, the lock release code stored in the lock release code storage means is automatically updated.SELECTED DRAWING: Figure 10

Description

The present invention relates to a washing machine installed, for example, in a laundromat.

Laundromats equipped with multiple washing machines are generally operated unattended. The user rarely waits on the spot from the start of washing to the end of drying, and often collects the washed laundry after spending time in another place. So while you're spending time away from the laundromat, your laundry can be stolen.

Therefore, in order to prevent the laundry from being stolen, it is conceivable to provide the cover of the washing machine with an anti-theft mechanism. As an anti-theft mechanism, there is one that has an operation unit for the user, locks the lid by inputting a personal identification number from the numeric keypad of the operation unit, and unlocks the lid when the user inputs the personal identification number. (For example, Patent Document 1).

JP-A-2007-68701

In order for the user to unlock the lid, it is necessary for the user to enter the personal identification number set by the user through the numeric keypad on the operation unit, but the user may forget the personal identification number. In that case, the user cannot unlock the lid and cannot collect the washed laundry.

In such a case, it is conceivable that the manager of the washing machine directly goes to the place of installation and unlocks the lid, but it is inconvenient for the manager to go there and it takes a lot of time. In addition, during that time, the user has to wait for the laundry to be taken out, which is inconvenient as it consumes a lot of time.

Assuming such a situation, the administrator of the washing machine may set an unlock code for the washing machine. The unlock code is for unlocking the lid by entering it from the numeric keypad on the operation unit instead of the password. Therefore, if the user forgets the password set by the user, the user can ask the administrator of the washing machine for the unlock code and enter the unlock code from the numeric keypad on the operation unit to lock the lid. can be released. This eliminates the need for the manager to go to the laundromat, improving convenience.

However, in that case, the unlock code set by the administrator will be disclosed to a third party, and unless the administrator changes the setting of the unlock code, that third party, like the administrator, can at any time You can unlock the lid. As a result, the security of the locking means provided on the lid of the washing machine is lowered.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a washing machine capable of preventing deterioration of the security of a lock means provided on the lid of the washing machine.

The washing machine of the present invention comprises a lid provided on a housing so as to be openable and closable, a lid lock device capable of switching between a locked state in which the lid is kept closed and an unlocked state in which the lid can be opened, and an operating mechanism. a personal identification number storage means for storing a personal identification number input from the operation section; an unlock code storage means for storing an unlock code; and the lid locking device when a personal identification number is input from the operation section. is maintained in a locked state, and when the personal identification number stored in the personal identification number storage means or the unlock code stored in the unlock code storage means is input from the operation unit in the locked state, the lid lock is performed. and a control means for switching the device to an unlocked state, and when the lid locking device is switched from the locked state to the unlocked state by inputting the unlock code, the unlock code storage means stores the control means. The unlock code is automatically updated.

In the washing machine of the present invention, it is preferable that an update rule for automatically updating the unlock code stored in the unlock code storage means can be selected from a plurality of update rules. .

In the washing machine of the present invention, when the personal identification number stored in the personal identification number storage means and the unlock code stored in the unlock code storage means are the same, the unlock code is input. Accordingly, it is preferable that the unlock code stored in the unlock code storage means is not automatically updated when the lid locking device is switched from the locked state to the unlocked state.

In the washing machine of the present invention, when the lid lock device is switched from the locked state to the unlocked state by inputting the unlock code, the unlock code is automatically updated. Even if the code is disclosed to a third party, it is possible to prevent the security of the lid lock device provided on the lid of the washing machine from being lowered.

In the washing machine of the present invention, the security of the lid lock device provided on the lid of the washing machine can be improved by changing the update rule of the unlock code by the administrator.

The washing machine of the present invention prevents unintentional updating of the unlock code set by the administrator when the personal identification number set by the user matches the unlock code set by the administrator. can do.

1 is a longitudinal sectional view showing a schematic configuration of washing machine 1 according to the present embodiment; FIG. It is a figure explaining the operation part of the washing machine 1 of FIG. 2 is a control block diagram of the washing machine 1 of FIG. 1. FIG. 4 is a flow chart showing the flow of processing for setting an unlock code; 7 is a flow chart showing the flow of processing for setting an update rule for an unlock code; 4 is a flow chart showing a flow of processing for setting an automatic release time; 4 is a flow chart showing a process flow of locking control of lid 2A of washing machine 1. FIG. 4 is a flowchart showing the flow of processing for start lock control; 4 is a flowchart showing a process flow of lock control during driving; 4 is a flow chart showing a flow of processing for acceptance control of a personal identification number;

Hereinafter, washing machine 1 of an embodiment of the present invention is explained with reference to drawings. FIG. 1 is a schematic cross-sectional view of a washing machine 1 according to an embodiment of the invention.

The washing machine 1 is a vertical washing machine, and has a housing 2 as a washing machine main body. Inside the housing 2, a bottomed cylindrical outer tub 3 is suspended by a plurality of hanging rods (not shown). ing. Inside the outer tank 3, an inner tank 5 having a large number of water passage holes around it is rotatably supported around a support shaft 5a fixed to the bottom wall thereof. A stirring blade 6 is provided at the bottom of the inner tank 5 so as to be rotatable about an inner shaft 6a fitted on a support shaft 5a.

The rotational driving force of the motor 10 attached to the lower surface of the outer tub 2 is transmitted through a transmission mechanism consisting of a small pulley 11a, a large pulley 11b, a V-belt 11c, etc. fixed to the motor shaft 10a, a clutch mechanism 12 and a torque motor 13a. The power is transmitted to the support shaft 5a and the inner shaft 6a via the power switching mechanism 13 included therein.

A water supply pipe 15 connected to an external water faucet is arranged in the upper rear part of the housing 2, and when the water supply valve 15a is opened, water introduced through the water supply pipe 15 is poured into the outer tank 3. be On the other hand, a drain pipe 16 is connected to the bottom of the outer tank 3, and the drain pipe 16 is opened and closed by a drain valve 16a.

A laundry inlet 2a opened on the upper surface of the housing 2 is provided with an openable/closable lid 2A. A lid lock device 20 for locking the lid 2A to prohibit it from being opened is provided in the upper front portion of the housing 2. As shown in FIG. The lid locking device 20 can be switched between a locked state in which the lid 2A is kept closed and an unlocked state in which the lid 2A can be opened. Also, the lid lock device 20 can detect whether the lid 2A is closed or open.

An operation unit 30 is provided on the upper surface of the housing 2 . As shown in FIG. 2, the operation unit 30 is for performing various operations on the washing machine 1, and is provided with a numeric keypad 31, a lid unlock key 32, and the like. The operation unit 30 is also provided with a lid lock LED 33 that lights up when the lid lock device 20 is in the locked state, and an input LED 34 that blinks when the password can be entered.

The numeric keypad 31 is used by the user to enter a personal identification number. and Note that the numeric keypad 31 is also used when the administrator of the washing machine 1 sets an unlock code, or when the user inputs an unlock code inquired of the administrator when he or she forgets the password set by the user. be.

The lid unlock key 32 is used by the user to unlock the lid lock device 20 when it is in the locked state.

FIG. 3 is a control block diagram of the washing machine 1 of this embodiment. As shown in FIG. 3, the control unit 50 of the washing machine 1 is composed of, for example, a microcomputer, and includes a CPU, a ROM storing a program for controlling the operation of the washing machine 1, and executing the program. and a RAM for temporarily storing data and the like used when performing the operation. The operation of washing machine 1 is controlled by control unit 50 .

The control unit 50 has a personal identification number storage unit 51 , an unlock code storage unit 52 , an update rule storage unit 53 and an automatic release time storage unit 54 .

When the user of washing machine 1 inputs a three-digit personal identification number by operating operation unit 30, personal identification number storage unit 51 stores the personal identification number. The password stored in the password storage unit 51 is cleared when the user unlocks the lid locking device 20 .

The unlock code storage unit 52 stores an unlock code preset by the administrator of the washing machine 1 in case the user forgets the password set by the user. As the unlock code, a three-digit number is used like a personal identification number.

The update rule storage unit 53 stores an update rule of the unlock code preset by the administrator of the washing machine 1 . That is, in the washing machine 1 of the present embodiment, when the locked state of the lid locking device 20 is released by the unlock code, the unlock code stored in the unlock code storage unit 52 is automatically updated according to the update rule. automatically updated.

In this embodiment, any one of +0 (no update), +123, +456, and +789 can be selected as the update rule for the unlock code stored in the update rule storage unit 53 . For example, when +123 is selected, the unlock code stored in the unlock code storage unit 52 is updated to a number obtained by adding 123 to the previous unlock code. If the number obtained by adding 123 to the previous unlock code is four digits, the number is updated to the last three digits.

The automatic release time storage unit 54 stores an automatic release time preset by the administrator of the washing machine 1 . That is, in the washing machine 1 of the present embodiment, after the end of operation, the input LED 34 indicating a state in which the password can be entered starts blinking, and the automatic release time stored in the automatic release time storage unit 54 has passed. Also, the locked state of the lid locking device 20 is automatically released when the password is not input. In the present embodiment, any one of 30 minutes, 60 minutes, 6 hours, 12 hours, and no automatic cancellation can be selected as the automatic cancellation time set in the automatic cancellation time storage unit 54 .

Connected to the control unit 50 are an operation unit 30 for performing various operation settings and the like, and a lid lock device 20 for switching the lid 2A between the closed state and the open state.

Therefore, when the user inputs a password from the operation unit 30 when the operation of the washing machine 1 is started, the control unit 50 stores the password in the password storage unit 51 and operates the lid lock device 20. Switch to locked state.

Further, after the operation of washing machine 1 is finished or when lid lock release key 32 of operation unit 30 is operated, control unit 50 receives a personal identification number input from operation unit 30 by the user, and the personal identification number is used as a password. When it matches the personal identification number stored in the number storage part 51, the lid locking device 20 is switched from the locked state to the unlocked state.

In addition, the control unit 50 stores the unlock code stored in the unlock code storage unit 52 when the unlock code is input from the operation unit 30 by the user while the lid lock device 20 is locked. When the code matches, the lid locking device 20 is switched from the locked state to the unlocked state.

After the operation of the washing machine 1 is finished, the control unit 50 starts blinking the input LED 34 indicating that the personal identification number can be entered, and the automatic release time stored in the automatic release time storage unit 54 has passed. When there is no input of the personal identification number, the lid locking device 20 is switched from the locked state to the unlocked state.

Further, in the locked state of the lid lock device 20, when the unlock code is input from the operation unit 30 to unlock, the control unit 50 automatically stores the unlock code stored in the unlock code storage unit 52. Update.

Further, the control unit 50 lights the lid lock LED 33 when the lid lock device 20 is in the locked state, and blinks the input LED 34 when the password can be input with the numeric keypad 31 .

(Set unlock code)
A process in which an administrator of washing machine 1 sets an unlock code will be described with reference to FIG. Note that the administrator sets the unlock code after switching to the mode for setting the unlock code by operating the operation unit 30 .

<Step S1>
In step S<b>1 , the control unit 50 receives input of an unlock code input from the operation unit 30 by the administrator. After that, the process proceeds to step S2.

<Step S2>
In step S2, the control unit 50 determines whether or not the input of the unlock code has been completed. If the controller 50 determines that the input of the unlock code has not been completed, the process returns to step S1. If the controller 50 determines that the input of the unlock code has been completed, the process proceeds to step S3.

<Step S3>
In step S3, the control unit 50 stores the unlock code input in step S1 in the unlock code storage unit 52, and ends the process.

(Set unlock code update rules)
A process in which an administrator of the washing machine 1 sets rules for updating the unlock code will be described with reference to FIG. Note that the administrator operates the operation unit 30 to set the update rule for the unlock code after switching to the mode for setting the update rule for the unlock code.

<Step S101>
In step S101, the control unit 50 determines whether or not +0 (no update) is selected as the unlock code update rule. If the control unit 50 determines that +0 (no update) is selected, the process proceeds to step S105. When the control unit 50 determines that +0 (no update) is not selected, the process proceeds to step S102.

<Step S102>
In step S102, the control unit 50 determines whether or not a method of updating the unlock code by adding 123 to the previous unlock code has been selected as the unlock code update rule. If the control unit 50 determines that the method of updating by adding 123 is selected, the process proceeds to step S105. If the control unit 50 determines that the method of updating by adding 123 is not selected, the process proceeds to step S103.

<Step S103>
In step S103, the control unit 50 determines whether or not a method of updating the unlock code by adding 456 to the previous unlock code has been selected as the unlock code update rule. If the control unit 50 determines that the method of updating by adding 456 is selected, the process proceeds to step S105. If the control unit 50 determines that the method of updating by adding 456 is not selected, the process proceeds to step S104.

<Step S104>
In step S104, the control unit 50 selects a method of updating the unlock code by adding 789 to the existing unlock code as the update rule of the unlock code. After that, the process proceeds to step S105.

<Step S105>
In step S105, the control unit 50 stores the update rule for the unlock code selected in any one of steps S101 to S104 in the update rule storage unit 53, and ends the process.

(Automatic release time setting)
Processing for setting the automatic release time by the administrator of the washing machine 1 will be described with reference to FIG. Note that the administrator operates the operation unit 30 to set the automatic cancellation time after switching to the mode for setting the automatic cancellation time.

<Step S201>
In step S201, the control unit 50 determines whether or not 30 minutes has been selected as the time until the locked state of the lid lock device 20 is automatically released. If the control unit 50 determines that 30 minutes has been selected, the process proceeds to step S206. If the control unit 50 determines that 30 minutes has not been selected, the process proceeds to step S202.

<Step S202>
In step S202, the control unit 50 determines whether or not 60 minutes has been selected as the time until the locked state of the lid lock device 20 is automatically released. If the controller 50 determines that 60 minutes has been selected, the process proceeds to step S206. If the controller 50 determines that 60 minutes has not been selected, the process proceeds to step S203.

<Step S203>
In step S203, the control unit 50 determines whether or not 6 hours has been selected as the time until the locked state of the lid lock device 20 is automatically released. When the control unit 50 determines that 6 hours has been selected, the process proceeds to step S206. If the control unit 50 determines that 6 hours has not been selected, the process proceeds to step S204.

<Step S204>
In step S204, the control unit 50 determines whether or not 12 hours has been selected as the time until the locked state of the lid lock device 20 is automatically released. If the control unit 50 determines that 12 hours has been selected, the process proceeds to step S206. When the control unit 50 determines that 12 hours is not selected, the process proceeds to step S205.

<Step S205>
In step S205, the control unit 50 selects infinite time (lock is not automatically released) as the time until the locked state of the lid locking device 20 is automatically released. After that, the process proceeds to step S206.

<Step S206>
In step S206, the control unit 50 stores the automatic release time selected in any one of steps S201 to S205 in the automatic release time storage unit 54, and ends the process.

Hereinafter, the control of the washing machine 1 after the administrator of the washing machine 1 sets the update rule of the unlock code and the automatic unlocking time will be described. A case will be described where a method of updating the unlock code by adding 123 to the existing unlock code is set as an update rule of the unlock code, and the automatic unlocking time is set to 12 hours.

(locking control)
Locking control for the lid 2A when the washing machine 1 is operated will be described with reference to FIG.

<Step S301>
In step S301, the control unit 50 detects that the user has put the laundry into the washing/dehydrating tub 3 and closed the lid 2A.

<Step S302>
In step S302, the control unit 50 repeatedly determines whether or not a charge corresponding to the operation set by the user has been inserted. If the control unit 50 determines that the charge corresponding to the driving has been inserted, the process proceeds to step S303.

<Step S303>
In step S<b>303 , the control unit 50 starts operating the washing machine 1 .

<Step S304>
In step S304, the control unit 50 performs start lock control. After that, the process proceeds to step S305. Starting lock control will be described in detail later.

<Step S305>
In step S305, the control unit 50 determines whether or not the operation of the washing machine 1 has ended. If the controller 50 determines that the operation of the washing machine 1 has not ended, the process proceeds to step S306. When the control unit 50 determines that the washing operation of the washing machine 1 has ended, the process proceeds to step S307.

<Step S306>
In step S306, the control unit 50 performs lock control during driving. After that, the process returns to step S305. The driving lock control will be described later in detail.

<Step S307>
In step S307, the control unit 50 determines whether or not there is a lid lock flag (whether or not the lid 2A is locked by the personal identification number). If the controller 50 determines that there is no lid lock flag, the process ends. If the controller 50 determines that the lid lock flag is not absent (the lid 2A is locked by the personal identification number), the process proceeds to step S308.

<Step S308>
In step S308, the control unit 50 performs acceptance control of the personal identification number. After that, the process proceeds to step S309. The acceptance control of the personal identification number will be described later in detail.

<Step S309>
In step S309, the control unit 50 determines whether or not there is a password input completion flag (whether the password entered by the user matches the password stored in the password storage unit 51). . If the control unit 50 determines that there is an input completion flag, the process proceeds to step S310. If the control unit 50 determines that there is no input completion flag (the password entered by the user does not match the password stored in the password storage unit 51), the process proceeds to step S312.

<Step S310>
In step S<b>310 , the control unit 50 clears the personal identification number set by the user and stored in the personal identification number storage unit 51 . After that, the process proceeds to step S311.

<Step S311>
In step S311, the control unit 50 switches the lid lock device 20 from the locked state to the unlocked state, turns off the lid lock LED 33, and ends the process.

<Step S312>
In step S312, the control unit 50 determines whether or not 12 hours set as the automatic release time have elapsed after the operation of the washing machine 1 has ended. If the control unit 50 determines that 12 hours have passed, the process proceeds to step S310. If the control unit 50 determines that 12 hours have not passed, the process returns to step S308.

(start lock control)
The start lock control process in step S304 described above will be described with reference to FIG.

<Step S401>
In step S401, the control unit 50 determines whether or not 60 seconds have passed since the start of operation. It should be noted that the washing machine 1 is preset to receive the input of the personal identification number within 60 seconds after the start of operation. If the controller 50 determines that 60 seconds have not elapsed since the start of operation, the process proceeds to step S402. If the control unit 50 determines that 60 seconds have passed since the start of operation, the process proceeds to step S406.

<Step S402>
In step S402, the control unit 50 blinks the input LED 34 to indicate that the personal identification number can be input, and accepts the input of the personal identification number.

<Step S403>
In step S403, the control unit 50 determines whether or not the input of the personal identification number has been completed. If the control unit 50 determines that the input of the personal identification number has been completed, the process proceeds to step S404. If the control unit 50 determines that the input of the personal identification number has not been completed, the process returns to step S401.

<Step S404>
In step S404, the control unit 50 causes the password input by the user to be stored in the password storage unit 51. FIG. After that, the process proceeds to step S405.

<Step S405>
In step S405, the control unit 50 puts the lid lock device 20 into the lid lock state, turns on the lid lock LED 33, and ends the process.

<Step S406>
In step S406, the control unit 50 sets the lid lock device 20 to the lid unlocked state (disables the lid lock flag), turns off the lid lock LED 33, and ends the process.

(lock control during operation)
The lock control process during driving in step S306 described above will be described with reference to FIG.

<Step S501>
In step S501, the control unit 50 determines whether or not there is a lid lock flag (whether or not the lid 2A is locked by the personal identification number). If the controller 50 determines that there is no lid lock flag, the process ends. If the control unit 50 determines that the lid lock flag is not present (the lid 2A is locked by the personal identification number), the process proceeds to step S502.

<Step S502>
In step S502, the control unit 50 keeps the lid lock device 20 in the lid locked state, keeps the lid lock LED 33 lit, and ends the process. After that, the process proceeds to step S503.

<Step S503>
In step S503, the control unit 50 determines whether or not the lid unlock key 32 has been operated. If the control unit 50 determines that the lid unlock key 32 has not been operated, the process ends. If the control unit 50 determines that the lid unlock key 32 has been operated, the process proceeds to step S504.

<Step S504>
In step S504, the control unit 50 performs acceptance control of the encryption number. After that, the process proceeds to step S505. The acceptance control of the personal identification number will be described later in detail.

<Step S505>
In step S505, the control unit 50 determines whether or not there is a code number input completion flag (whether the input code number matches the code number stored in the code number storage unit 51). If the control unit 50 determines that there is an input completion flag, the process proceeds to step S506. If the control unit 50 determines that there is no input completion flag (the input password does not match the password stored in the password storage unit 51), the process proceeds to step S510.

<Step S506>
In step S506, the controller 50 switches the lid locking device 20 from the lid locked state to the lid unlocked state, and turns off the lid lock LED 33. FIG. After that, the process proceeds to step S507.

<Step S507>
In step S507, the controller 50 determines whether or not the lid 2A has been opened. If the control unit 50 determines that the lid 2A has been opened, the process proceeds to step S508. When the control unit 50 determines that the lid 2A is not opened, the process proceeds to step S511.

<Step S508>
In step S508, the control unit 50 repeatedly determines whether or not the lid 2A is closed. When the control unit 50 determines that the lid 2A is closed, the process proceeds to step S509.

<Step S509>
In step S509, the control unit 50 switches the lid lock device 20 from the lid unlocked state to the lid locked state, lights the lid lock LED 33, and ends the process.

<Step S510>
In step S510, the control unit 50 determines whether or not 30 seconds have passed. It should be noted that washing machine 1 is preset in step S503 to receive the input of the personal identification number within 30 seconds after lid unlock key 32 is operated. If the control unit 50 determines that 30 seconds have not passed, the process returns to step S504. If the control unit 50 determines that 30 seconds have passed, the process proceeds to step S509.

<Step S511>
In step S511, the control unit 50 determines whether or not 30 seconds have passed. In the washing machine 1, in step S506, if the lid 2A is not opened within 30 seconds after the lid locking device 20 is switched to the lid unlocked state, the lid locking device 20 is preset to be switched to the lid locked state. It is If the control unit 50 determines that 30 seconds have not passed, the process returns to step S507. If the control unit 50 determines that 30 seconds have passed, the process proceeds to step S509.

(Reception control of personal identification number)
The process of controlling the acceptance of the personal identification number in step S308 will be described with reference to FIG.

<Step S601>
In step S601, the control unit 50 blinks the input LED 34 to indicate that the personal identification number can be input, and accepts the input of the personal identification number. After that, the process proceeds to step S602.

<Step S602>
In step S<b>602 , the control unit 50 determines whether or not the password input in step S<b>601 matches the password stored in the password storage unit 51 . If the control unit 50 determines that the password matches the password stored in the password storage unit 51, the process proceeds to step S605. If the control unit 50 determines that the password does not match the password stored in the password storage unit 51, the process proceeds to step S603.

<Step S603>
In step S<b>603 , the control unit 50 determines whether or not the personal identification number input in step S<b>601 matches the unlock code stored in the unlock code storage unit 52 . If the control unit 50 determines that the unlock code does not match the unlock code stored in the unlock code storage unit 52, the process ends. If the control unit 50 determines that the code matches the unlock code stored in the unlock code storage unit 52, the process proceeds to step S604.

<Step S604>
In step S<b>604 , the control unit 50 adds 123 to the unlock code stored in the unlock code storage unit 52 to update the unlock code stored in the unlock code storage unit 52 . After that, the process proceeds to step S605.

<Step S605>
In step S605, the control unit 50 sets the input completion flag of the personal identification number, and terminates the process. The presence of the input completion flag means that the password entered by the user matches the password stored in the password storage unit 51, or that the unlock code entered by the user is stored in the unlock code storage unit. It indicates that it matches the unlock code stored in unit 52 .

In addition, in the washing machine 1 of the present embodiment, the unlock code preset by the administrator is automatically set every time the lid lock device 20 is switched from the locked state to the unlocked state by the user inputting the unlock code. The number of updates is stored in the control unit 50 . Therefore, the administrator grasps the unlock code stored in the unlock code storage unit 52 based on the number of updates stored in the control unit 50 and the unlock code update rules preset by the administrator. be able to. If the unlock code stored in the unlock code storage unit 52 is lost, the administrator can reset the unlock code.

The washing machine 1 of this embodiment includes a lid 2A provided in a housing 2 so as to be openable and closable, and a lid that can be switched between a locked state in which the lid 2A is kept closed and an unlocked state in which the lid 2A can be opened. Lock device 20, operation unit 30, personal identification number storage unit 51 as personal identification number storage means for storing the personal identification number input from operation unit 30, and unlocking as unlock code storage means for storing the unlock code. A code storage part 52, and when a password is input from an operation part 30, the lid lock device 20 is maintained in a locked state, and in the locked state, the password or unlock code stored in the password storage part 51 is stored. and a control unit 50 which is a control means for switching the lid locking device 20 to an unlocked state when the unlock code stored in the unit 52 is input from the operation unit 30, and the lid is opened when the unlock code is input. When the lock device 20 is switched from the locked state to the unlocked state, the unlock code stored in the unlock code storage unit 52 is automatically updated.

Thus, in the washing machine 1 of the present embodiment, when the lid lock device 20 is switched from the locked state to the unlocked state by inputting the unlock code, the unlock code is automatically updated. Even if the administrator discloses the unlock code to a third party, the security of the lid locking device 20 provided on the lid 2A of the washing machine 1 can be prevented from being lowered.

In the washing machine 1 of the present embodiment, the update rule for automatically updating the unlock code stored in the unlock code storage unit 52 is configured to be selectable from a plurality of update rules.

Thus, in the washing machine 1 of the present embodiment, the security of the lid locking device 20 provided on the lid 2A of the washing machine 1 can be improved by changing the update rule of the unlock code by the administrator.

In the washing machine 1 of the present embodiment, when the personal identification number stored in the personal identification number storage unit 51 and the unlock code stored in the unlock code storage unit 52 are the same, the unlock code is input. Therefore, when the lid lock device 20 is switched from the locked state to the unlocked state, the unlock code stored in the unlock code storage unit 52 is not automatically updated.

As a result, in the washing machine 1 of the present embodiment, when the personal identification number set by the user matches the unlock code set by the administrator, the unlock code set by the administrator is unintentionally updated. can prevent it from being done.

Although the embodiments of the present invention have been described above, the specific configuration of each unit is not limited to the above-described embodiments.

For example, in the above-described embodiment, an example of the method of updating the unlock code stored in the unlock code storage unit 52 was shown, but any method of updating the unlock code may be used.

In the above embodiment, the case where the washing machine 1 is a vertical washing machine has been described, but the present invention is not limited to this. The washing machine of the present invention may be a drum-type washing machine. The present invention provides a drum that can rotate around a horizontal axis or an inclined axis tilted with respect to the horizontal direction, and a lid lock device that can take a locked state that keeps the lid closed or an unlocked state that allows the lid to be opened. It is applicable to a drum-type washing machine having

1 washing machine 2 housing 2A lid 20 lid lock device 30 operation unit 50 control unit (control means)
51 personal identification number storage unit (personal identification number storage means)
52 unlock code storage unit (unlock code storage means)

Claims (3)

a lid that can be opened and closed on the housing;
a lid locking device capable of switching between a locked state in which the lid is kept closed and an unlocked state in which the lid can be opened;
an operation unit;
a personal identification number storage means for storing a personal identification number input from the operation unit;
an unlock code storage means for storing an unlock code;
When a password is input from the operation unit, the lid locking device is maintained in a locked state, and in the locked state, the password stored in the password storage means or the unlock code stored in the storage means. a control means for switching the lid lock device to an unlocked state when an unlock code is input from the operation unit;
When the lid locking device is switched from the locked state to the unlocked state by inputting the unlock code, the unlock code stored in the unlock code storage means is automatically updated. Washing machine characterized. 2. The laundry according to claim 1, wherein an update rule for automatically updating the unlock code stored in said unlock code storage means is selectable from a plurality of update rules. machine. When the personal identification number stored in the personal identification number storage means and the unlock code stored in the unlock code storage means are the same,
The unlock code stored in the unlock code storage means is not automatically updated when the lid locking device is switched from the locked state to the unlocked state by inputting the unlock code. The washing machine according to claim 1 or 2.

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