JP3858036B2 - Drum washing machine - Google Patents

Description

  The present invention relates to a drum-type washing machine having a drum that rotates about a horizontal axis or an inclined axis. In general, drum-type washing machines are often capable of continuously performing from washing to drying, but the drum-type washing machine referred to here may not be capable of drying.

  The drum type washing machine has a configuration in which a cylindrical bowl-shaped drum is rotatably arranged inside an outer tub with a horizontal axis or an inclined axis as a center. Wash the laundry by rotating it in the tub. In such a general drum-type washing machine, a door body for throwing clothes into the front of the substantially rectangular parallelepiped outer box is provided in a laterally open manner, and when the door body is opened, through the opening provided in the outer tub, The laundry input port provided on one end surface of the drum is configured to look into.

  One of the major consumer dissatisfaction with such drum-type washing machines is that it is difficult to put clothes in and out. That is, in the drum type washing machine having the above-described configuration, the laundry input port is at a low position, and even when the washing machine is placed on a dedicated table, the difficulty of loading the laundry is completely eliminated. It will not be resolved. In order to cope with such dissatisfaction, conventionally, some commercially available drum-type washing machines have an inclined shaft with a laundry input port of the drum slightly inclined upward. Attempts have also been made to make the laundry inlet as large as possible. However, even with such a configuration, it is not necessarily satisfactory in terms of usability for those who are accustomed to the operability of the spiral washing machine.

One possible way to eliminate the above-mentioned inconvenience in drum-type washing machines is to place the laundry input port on the upper surface instead of the front of the outer box, as in the case of the conventional spiral washing machine. Is to provide. When the laundry input port is provided on the upper surface of the outer box, it is necessary to provide the opening of the outer tub and the opening of the drum at a position coincident with the input port. An opening will be provided. However, since the position of the outer tub is fixed, the drum is rotatable in the outer tub, so that the drum is stopped at a position where the opening provided in the drum surely matches the opening of the outer tub. There is a need.
JP-A-4-189394

  In such a drum type washing machine, a mechanism capable of fixing the rotational position of the drum as quickly and as reliably as possible with a simple configuration is desired.

  The present invention has been made to solve such problems, and the main object is to rotate the drum so that the drum opening coincides with the outer tank opening when the drum is stopped with a simple configuration. An object of the present invention is to provide a drum-type washing machine that can fix the machine.

In order to solve the above-mentioned problems, the present invention is such that a drum having a substantially cylindrical surface is rotatably disposed around a horizontal axis or an inclined axis in an outer tub disposed in an outer box. In drum-type washing machines,
A shaft member one end of which is fixed to the front Symbol drum as a horizontal axis also inclined shaft,
A bearing for rotatably supporting the shaft body was before Symbol outer tub,
An outer rotor type motor of a drum rotation drive comprising rotor and stator, which is attached to the outer tub side attached to the other end of the front Kijikutai,
A recess for engagement provided on the outer peripheral edge of the rotor of the outer rotor type motor;
An operating body is provided in the outer tub and moves forward or backward toward the rotor. A part of the operating body engages with the concave portion to stop the rotation of the rotor, and the drum rotates a predetermined amount. Drum lock means for fixing in position;
It is characterized by having.

  In the drum type washing machine according to the present invention, for example, when the drum is stopped at a position where the laundry input port or the outer tub opening coincides with the drum opening as described above, the drum and the drum rotate together. In the member, the position of the drum is fixed by stopping the rotation of the rotor provided outside the outer tub. For this reason, there is no possibility that the drum lock means is immersed in water or gets wet, so that it is not necessary to seal the water. Further, since the rotor has a diameter larger than that of the shaft body, the positional accuracy can be easily increased as compared with the case where the rotation of the shaft body itself is stopped.

Further, when the operating body of the drum lock means advances toward the rotor, there is a recess in the front, and the tip of the operating body engages with the recess to stop the rotor. If the rotation of the rotor is slightly deviated and the tip of the operating body contacts the guide piece, the tip of the operating body is guided to the recess by rotating the rotor slightly while maintaining the contact state. can do. Thereby, the force applied at the time of engagement can be reduced, and the operating body can be prevented from coming into contact with an undesired portion and damaging the operating body itself or a part of the rotor.

  Hereinafter, a drum type washing machine according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of the drum type washing machine of the present embodiment, and FIG. In this drum-type washing machine, the outer box has an inclined shape (hereinafter referred to as “inclined portion 1c”) in which a corner portion between the upper surface portion 1a and the front surface portion 1b is slightly rounded and is lowered forward. A large laundry inlet 3 is opened from the inclined portion 1c to the rear upper surface portion 1a, and the upper lid 2 for opening and closing the laundry inlet 3 extends horizontally in the lateral direction as shown in FIG. The shafts 2a and 2b can stand up in a folded state behind the laundry insertion port 3.

  A detergent container 4 that can be pulled forward is provided on the left side of the upper lid 2, and an operation panel 5 is provided on the right side so as to extend in the front-rear direction. The operation panel 5 has various operation keys for setting the driving course, reservation time, etc., and lights according to these settings, notifies the progress of the washing process, or the remaining time for reservation and driving Various displays for displaying such as are appropriately distributed. Since almost the entire operation panel 5 is oriented obliquely upward, when the user looks down obliquely downward while standing in front of the present washing and drying machine, the surface of the operation panel 5 is perpendicular to the line of sight. Consideration is given that the display is close, the display is easy to see, and the operation keys are easy to press.

  Next, based on FIGS. 3-5, the internal structure of this drum type washing machine is demonstrated roughly. FIG. 3 is a front longitudinal sectional view of a main part inside the drum type washing machine, FIG. 4 is a left side view of the same inside, and FIG. 5 is a right side longitudinal sectional view of the inside.

  Inside the outer box 1 and on the pedestal portion 6, the outer tub 10 whose peripheral surface is substantially cylindrical and whose both end faces are substantially closed is in a state where the end faces are opposed to the left and right side surfaces of the outer box 1, respectively. The two springs 11 that are suspended and supported from the upper left and right sides and the damper 12 that supports the lower portion of the outer tub 10 in the front-rear direction are held so as to be moderately swingable. Inside the outer tub 10, as an inner tub for storing laundry, a horizontal drum 13 in which both end surfaces of a substantially cylindrical peripheral surface with a large number of water passage holes are substantially closed. Is provided so as to be rotatable about a horizontal axis C extending in the left-right direction.

  The main shaft 14 fixed to the center of the left end surface of the drum 13 is supported by a bearing 17 held in a first bearing case 16 made of aluminum die cast that is fixed to the left end surface of the outer tub 10. On the other hand, the auxiliary shaft 15 fixed to the center of the right end surface of the drum 13 is supported by a second bearing 19 held by a second bearing case 18 fixed to the right end surface of the outer tub 10. The main axis 14 and the auxiliary axis 15 form the horizontal axis C. The rotor 20b of the outer rotor type motor 20 is fixed to the tip of the main shaft 14 projecting sideways from the left end surface of the outer tub 10, while the stator 20a of the motor 20 is fixed to the first bearing case 16 that also serves as a motor base. Is fixed. When a drive current is supplied to the stator 20a from a control circuit (not shown), the rotor 20b rotates thereby, and the drum 13 is rotationally driven via the main shaft 14 at the same rotational speed as the rotor 20b.

  An outer tub opening 100 for taking in and out the laundry is provided at a position coinciding with the laundry input port 3 of the outer box from the upper part of the outer peripheral surface of the outer tub 10 to the diagonal front, and the outer tub opening 100 is an outer tub door. 101 is openable and closable. Further, a drum opening 130 for taking in and out the laundry is also provided on the peripheral surface of the drum 13, and the drum opening 130 can be opened and closed by a drum door 131 including two door bodies 131a and 131b having front and rear opening structures. It has become. However, since the drum 13 is rotatable, the movable engagement means is provided below the stator 20a so that the drum 13 maintains a stopped state at a position where the drum opening 130 coincides with the outer tank opening 100 in the radial direction. The drum lock device 21 is provided.

  Although it is dangerous if the user opens the outer tank door 101 while the drum 13 is rotating, a door lock mechanism that prohibits the opening of the outer tank door 101 is not shown, but the drum exposure prohibiting means is not shown. And is automatically locked during operation. For the same purpose, a lock mechanism that prohibits the opening of the upper lid 2 may be provided.

  A drain port 22 is provided at the bottom of the outer tub 10, and the drain port 22 is connected to an external drain groove through a drain hose (not shown) via a drain valve 23. Moreover, the recessed part which became depressed in the bottom part of the outer tank 10 is formed, and the water heater 24 for heating the stored water is arrange | positioned there.

  Although not described in detail here, hot air is supplied into the drum 13 at the time of drying to the right outer side of the outer tub 10, and the air after the water vapor taken from the laundry is condensed and liquefied and removed is heated again. Such a circulating air flow path is formed.

  FIG. 6 is an electric system configuration diagram of a main part of the drum type washing machine of this embodiment. The control unit 50 is mainly composed of a microcomputer including a CPU, a ROM, a RAM, a timer, and the like, and based on a control program stored in the ROM, the operation of each process of washing, rinsing, dehydration and drying is performed. Various controls for performing are executed. The control unit 50 receives a key input signal from various operation keys 52 provided on the operation panel 5 in order for the user to give various settings and instructions, and also detects the water level stored in the outer tub 10. A water level sensor 54 that detects the temperature of the water in the rinsing process, a drum outlet temperature sensor 55 that detects the temperature on the drum outlet side in the drying process, a cooling water temperature sensor 56 that detects the temperature of the cooling water in the drying process, and the drum motor 20. Detection signals are respectively input from rotation sensors 20c that are provided and configured with Hall elements or the like for detecting the rotational position of the motor 20.

  A load driving unit 51 is connected to the control unit 50, and the drum motor 20, the fan motor 57, the water heater 24, the drying heater 58, the water supply valve 59, and the drain valve 23 are connected via the load driving unit 51. Etc. are controlled. In addition, in order to perform drum lock that prohibits rotation of the drum 13 as described later, the control unit 50 outputs a detection signal from a rotational position detector 217 built in the torque motor 211 provided in the drum lock device 21. The operation of the torque motor 211 is controlled while receiving.

  Next, characteristic components in the drum type washing machine of this embodiment will be described in detail. First, the configuration of the drum lock device 21 in the drum type washing machine will be described with reference to FIG. 7 in addition to FIGS. 7A and 7B are enlarged views of the drum lock device 21. FIG. 7A shows a state when the drum lock is released, and FIG. 7B shows a state when the lock is activated.

  The drum lock device 21 includes a torque motor 211 as a driving source, an operating body 213 having a lock pin 212 at its end, a spring 214 that urges the operating body 213, a cam 215 fixed to the rotating shaft of the torque motor 211, and the like. The first bearing case 16 and the outer tub 10 are straddled and fixed to both. Although the outer tub 10 is made of plastic, since the first bearing case 16 is made of aluminum die casting, the drum lock device 21 can be firmly held. The operating body 213 can move only in the vertical direction along the guide groove provided in the case, and is biased upward by the spring 214. The convex portion 216 provided in the cam 215 is movable in the opening 213 a provided in the operating body 213.

  On the other hand, the engagement groove portion 25 as the fixed engagement means on the side receiving the lock pin 212 is provided on the outer peripheral edge portion of the rotor 20b of the drum motor 20, and the engagement groove portion into which the lock pin 212 just fits is provided. Guide pieces 25a are provided on the left and right (front and rear in the direction of rotation of the rotor 20b).

  Thus, as shown in FIG. 7A, when the convex portion 216 is at the lowest position, the convex portion 216 presses the operating body 213 downward against the urging force of the spring 214, thereby The lock pin 212 is pulled downward (that is, retracted). When the torque motor 211 is rotated in the counterclockwise direction from this state, the convex portion 216 is raised with the rotation, and the operating body 213 is gradually moved upward by the urging force of the spring 214. As a result, the lock pin 212 starts to advance upward.

  As shown in FIG. 7B, when the cam 215 rotates halfway and the convex portion 216 reaches the highest position, the operating body 213 also reaches the highest position, and the lock pin 212 advances most. At this time, if the engagement groove portion 25 exists in the front of the advancement, the lock pin 212 is fitted in the groove hole of the engagement groove portion 25, thereby stopping the rotation of the rotor 20 b. That is, the drum 13 is locked. Since the tip of the lock pin 212 has a trapezoidal shape with both corners cut off, even when the positions of the lock pin 212 and the groove of the engagement groove 25 are slightly shifted, the entrance of the groove of the engagement groove 25 When the cut-off portion of the lock pin 212 comes into contact with both corner portions, the two fit together so as to slide along the inclination of the cut-off portion.

  When the torque motor 211 is further rotated in the counterclockwise direction, the convex portion 216 is lowered along with the rotation, and the operating body 213 is gradually moved downward accordingly. Then, the lock pin 212 is disengaged from the slot of the engagement groove 25, and the rotor 20b is in a rotatable state. That is, the drum lock is released.

  In this way, drum locking and unlocking are achieved according to the rotational operation of the torque motor 211 that rotates only in one direction. As described above, the torque motor 211 has a built-in rotational position detector 217 that detects the rotational position of the shaft. Depending on the detection signal, the lock pin 212 is advanced or retracted. It can be determined whether there is. A solenoid can be considered as a mechanism for reciprocating the actuating body 213, but the noise during operation can be suppressed by using a torque motor, and the lock pin moves forward due to the displacement of the lock pin and the engagement groove. Even if it is stopped in the middle, there is an advantage that abnormal current does not flow and break.

  Next, the control operation when performing drum lock will be specifically described with reference to the flowchart of FIG. The controller 50 resets the drum position correcting operation count C to 0 (step S10). Then, after the drum motor 20 is driven to stop the rotation at a predetermined position, the torque motor 211 is driven to advance the lock pin 212 as described above (step S11). Immediately thereafter, it is determined whether or not the drum lock has been completed (step S12). Here, it is considered that the drum lock is completed when it is detected by the detection signal from the rotation position detector 217 that the cam 215 has rotated to a predetermined position. Therefore, the rotational position detector 217 and a part of the control unit 50 function together as the detection means. When the lock pin 212 is fitted into the groove of the engagement groove 25, it is determined that the drum lock has been completed. Therefore, the process proceeds to step S26 and the operation other than the drum lock is continued.

  There may be some deviation in the rotational alignment by the first driving of the drum motor 20. As a result, when the positions of the lock pin 212 and the groove of the engagement groove 25 are shifted, the lock pin 212 comes into contact with the guide piece 25 a protruding to the side of the engagement groove 25. Then, the torque motor 211 does not rotate any further, and it cannot be determined in step S12 that the drum lock has been completed. Therefore, the drum position correcting operation count C is incremented (step S13), and it is determined whether or not the value is 3 or less (step S14). If it is 3 or less, then the drum 13 is controlled to rotate little by little in the forward direction (step S15). At this time, the rotor 20b rotates while the lock pin 212 is in contact with the guide piece 25a of the engagement groove 25. Then, while determining whether or not the drum lock is completed, the drum 13 is rotated until the rotation angle reaches 5 ° (steps S16 and S17). If it is determined that the lock pin 212 is fitted in the slot during this period, it is determined that the drum lock has been completed. Therefore, the process proceeds to step S25, where the operation of the drum motor 20 is stopped and then the operation is continued.

  When the rotation angle reaches 5 ° without detecting the completion of drum lock, the drum motor 20 is temporarily stopped (step S18), and this time, the drum motor 20 is controlled to rotate little by little in the reverse direction (step S19). Then, while determining whether or not the drum lock is completed, the drum 13 is rotated until the rotation angle reaches 10 ° (that is, 5 ° in the reverse direction when viewed from the state before the start of normal rotation) (steps S20 and S21). ). If the lock pin 212 is fitted in the groove of the engagement groove 25 during that time, it is determined that the drum lock has been completed. Therefore, the process proceeds to step S25 and the operation is continued after the rotation of the drum motor 20 is stopped.

  When the rotation angle reaches 5 ° without detecting the completion of drum lock, the drum motor 20 is temporarily stopped (step S22), and the process returns to step S13. Therefore, drum locking is attempted by repeating the processes of S13 to S22 up to three times. When the drum position correcting operation count C exceeds 3, the process proceeds from step S14 to S23, the user is informed of a drum lock abnormality by a buzzer sound or display, and the outer tank door 101 is unlocked ( Step S24). As a result, the outer tub door 101 can be freely opened, and the user can open the upper lid 2, the outer tub door 101 and the drum door 131 as needed to take out the laundry.

  As described above, in the drum type washing machine according to the present embodiment, the position where the lock pin 212 and the groove of the engagement groove 25 are close to each other is rotated slightly in both the forward and reverse directions so that the two are fitted. You can find a drum lock in a short time.

  As described above, the alignment by driving the drum motor 20 is not strict, but if the drum 13 is rotated by ± 5 ° as described above, in most cases the drum lock position can be found. However, if the initial alignment accuracy is inferior, the lock pin 212 may be disengaged from the guide piece 25a when the drum is rotated ± 5 °. When the lock pin 212 comes out of the guide piece 25a, it advances as much as it is. Therefore, the detection signal from the rotational position detector 217 is in the same state as when the drum lock is completed, and it is erroneously determined that the drum lock is completed. Therefore, when the initial alignment accuracy is inferior, it is preferable to execute drum lock processing by other control as described below.

  Next, control by another method of drum lock will be described with reference to the flowchart of FIG. The controller 50 resets the drum position correcting operation count C to 0 (step S30). Then, after the drum motor 20 is driven to stop the rotation at a predetermined position, the torque motor 211 is driven to advance the lock pin 212 as described above (step S31). Thereafter, it is determined whether or not the drum lock has been completed (step S32). If it is determined that the drum lock has been completed, the operation other than the drum lock is continued (step S42).

  If it is determined in step S32 that the drum lock is not completed, the drum position correcting operation count C is incremented (step S33), and it is determined whether or not the value is 3 or less (step S34). If it is 3 or less, the drum motor 20 is controlled so as to rotate the drum 13 little by little in the forward rotation direction (step S35). At this time, the rotor 20b rotates while the lock pin 212 is in contact with the guide piece 25a of the engagement groove 25. The drum 13 is rotated until it is determined that the drum lock is completed (step S36). When it is determined that the drum lock is completed, the drum motor 20 is temporarily stopped, and then the torque motor 211 is further rotated half a turn to release the drum lock. That is, the operation of pulling the lock pin 212 is performed (step S38). When it is determined that the drum lock has been released by the detection signal from the rotational position detector 217, that is, the lock pin 212 has moved backward, the process returns to step S31 to retry the drum lock operation.

  If unlocking is not detected in step S39, the user is informed of a drum unlocking abnormality by a buzzer sound or display (step S40), and then the outer tank door 101 is unlocked (step S41). According to this control method, when the drum lock fails, the lock pin 212 is temporarily retracted. Therefore, even if the drum 13 is rotated with the lock pin 212 advanced, the lock pin 212 collides with the engagement groove 25. This eliminates the risk of damage.

  Furthermore, as another method of controlling the drum lock operation, a flowchart shown in FIG. 10 may be used. In this control, a pulse signal generated every time the drum motor 20 rotates by a predetermined angle, that is, a detection signal by the rotation sensor 20c in FIG. 6 is used. Here, it is assumed that the number of pulse signals generated during one rotation of the drum 13 is 72.

  When performing drum locking, first, the drum motor 20 is rotationally driven in the forward rotation direction at a predetermined speed (step S50), and when it is detected that the drum 13 has passed a predetermined rotational position (step S51), the rotation sensor 20c. The counter of the pulse signal from is reset (step S52). Then, counting is started from a state where the count value P is 0 (step S53), and if it is detected that the count value P has reached 65 ("Y" in step S54), that is, after the counter is reset, about When the 325 ° drum 13 rotates, the driving of the torque motor 211 is started and the lock pin 212 is advanced (step S55). Since there is a slight time delay until the lock pin 212 actually fits into the groove of the engagement groove 25 or abuts on the guide piece 25a, the engagement groove 25 is just in the advance position of the lock pin 212. The lock pin 212 is brought into contact with the guide piece 25a immediately before the slot comes, and then the rotor 20b is slightly rotated while the lock pin 212 is in contact with the guide piece 25a, and is fitted into the slot. Then, since it is determined that the drum lock is completed (“Y” in step S56), the drum motor 20 is stopped (step S57).

  The rotational speed of the drum motor 20 may be somewhat high until an instruction to advance the lock pin 212 is given, but thereafter, the rotational speed is decreased and the lock pin 212 comes into contact with the engaging groove 25. It is better to weaken the impact. According to this control, the probability that the drum lock operation will fail is very small, so that on average, there is a possibility that the drum lock can be performed most quickly.

  By the way, when the drum lock is performed as described above, in order to prevent the mechanical load from being applied to the lock pin 212 and the rotor 20b as much as possible, the rotor 20b is temporarily stopped after being rotated by a minute angle. It is desirable to intermittently drive the rotor 20b such that the rotor 20b is continuously rotated by a minute angle if necessary (for example, if not locked). When an induction motor is used, such fine speed control is difficult. Therefore, a DC brushless motor is used as the drum motor 20 and is driven by an inverter. However, even if a DC brushless motor is used, when the drum 13 is driven to rotate at a low speed, the generated torque is low. In a state where the laundry is stored in the drum 13, the drum 13 is rotated slightly. When the laundry is paused, the laundry is likely to move and the drum 13 is likely to turn by the force, and it is difficult to maintain a stable pause state.

  Therefore, in the drum type washing machine of this embodiment, a rotation control method as described below is employed to generate sufficient torque even during low-speed intermittent rotation so as to obtain stability. This rotation control method will be described. In general, rotation control of a DC brushless motor uses a magnet's attractive force and repulsive force to smoothly rotate the rotor. However, in this drum type washing machine, the repulsive force of the magnet is substantially reduced. By using only the suction force without using it, the position retainability at the time of temporary stop when the rotor is rotated intermittently is enhanced.

  FIG. 11 is an operation principle diagram of drum control used in the drum lock operation of the washing machine. In this figure, for the sake of simplicity, a rotor composed of a rotor at the center and a three-phase stator of U, V, and W is disposed on the outer peripheral side. Is 36 slots.

  First, as shown in FIG. 11A, when a current is passed through each of the U phase and the V phase so that the U phase is the N pole and the V phase is the S pole, the rotor is held at the position shown in the figure. Next, as shown in FIG. 11 (B), when current flows in the W phase and the V phase, respectively, and the W phase is the N pole and the V phase is the S pole, the rotor rotates about 60 ° counterclockwise as shown in the figure. Held in position. Subsequently, as shown in FIG. 11 (C), when the current is passed through the W phase and the U phase, the W phase is the N pole and the U phase is the S pole, the rotor further rotates about 60 ° counterclockwise. It is held in the position shown. In this way, the rotor can be intermittently rotated by 60 ° by sequentially changing the phase through which the current flows one by one. And in each state as shown in FIG. 11, the rotor maintains its rotational position only by the attractive force of the magnet. Therefore, the position is stable, and even if a force for rotating the rotor from the outside acts, it does not rotate easily.

  In actual control, for example, when a command is given to stop the drum 13 from a state in which the drum motor 20 is rotationally driven by normal control, the control is switched to the above control, and the drum is controlled under the control. The drum motor 20 is stopped when the motor 20 rotates by a predetermined angle after obtaining the Z-phase signal output only once during the period of one rotation. At this time, since the position of the rotor 20b is fixed only by the magnet's attractive force as described above, the rotor 20b can be kept almost stationary regardless of the load in the drum 13. For example, in the control example shown in FIG. 9, the torque motor 211 is controlled to advance the lock pin 212 in this state. Thereby, when the lock pin 212 is inserted into the groove hole of the engagement groove portion 25, the rotor 20b does not move, and an impact applied to the lock pin 212 hardly occurs.

  Note that the above embodiment is an example of the present invention, and it is apparent that changes and modifications can be made as appropriate within the scope of the present invention.

1 is an external perspective view of a drum type washing machine according to an embodiment of the present invention. The side longitudinal cross-sectional view of the upper part of the drum type washing machine of a present Example. The front longitudinal cross-sectional view of the principal part inside the drum type washing machine of a present Example. The left view inside the drum type washing machine of a present Example. The right side longitudinal cross-sectional view inside the drum type washing machine of a present Example. The electric system block diagram of the principal part of the drum type washing machine of a present Example. It is an enlarged view of a drum lock device, (A) is when the drum lock is released, (B) is a state when the lock is activated. The flowchart which shows an example of the control method of a drum lock operation | movement. The flowchart which shows the other control method of drum lock operation | movement. The flowchart which shows the further another control method of drum lock operation | movement. The operation principle figure of the drum control used in the case of drum lock operation in the drum type washing machine of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer box 2 ... Upper lid 3 ... Laundry inlet 10 ... Outer tank 100 ... Outer tank opening 101 ... Outer tank door 13 ... Drum 130 ... Drum opening 131 ... Drum door 14 ... Main shaft 16 ... First bearing case 20 ... Drum Motor 20a ... Stator 20b ... Rotor 20c ... Rotation sensor 21 ... Drum lock device 211 ... Torque motor 212 ... Lock pin 213 ... Actuator 213a ... Opening 215 ... Cam 216 ... Convex portion 217 ... Rotation position detector 25 ... Engaging groove 25a ... Guide piece 50 ... Control part 51 ... Load drive part

Claims (2)

In a drum-type washing machine in which a drum having a substantially cylindrical surface is rotatably disposed around a horizontal axis or an inclined axis inside an outer tub disposed in an outer box,
A shaft member one end of which is fixed to the front Symbol drum as a horizontal axis also inclined shaft,
A bearing for rotatably supporting the shaft body was before Symbol outer tub,
An outer rotor type motor of a drum rotation drive comprising rotor and stator, which is attached to the outer tub side attached to the other end of the front Kijikutai,
A recess for engagement provided on the outer peripheral edge of the rotor of the outer rotor type motor;
An operating body is provided in the outer tub and moves forward or backward toward the rotor. A part of the operating body engages with the concave portion to stop the rotation of the rotor, and the drum rotates a predetermined amount. Drum lock means for fixing in position;
A drum-type washing machine comprising: The recess, on both sides of the inlet of the recess, respectively extend outward, a portion of the actuating member has a guide piece for guiding the actuating member into the recess by slightly rotating the rotor while in contact The drum-type washing machine according to claim 1.