JP2013128633A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which the number of lead wires is large between a door switch device and a control device.SOLUTION: The door switch device includes a door switch device including a sliding member 6 sliding and moving by engagement of a hook 3 of a door 1 by closing the door 1, holding means 13 for preventing opening of the door 1, a driving source 10 for operating the holding means 13, position detection switch means 13 for detecting the position of the holding means 13, and door opening/closing detection switch means 27 provided in the vicinity of the sliding member 6. The door opening/closing detection switch means 27 is turned on to detect closing of the door 1. The door opening/closing detection switch means 27 and the driving source 10 for operating the holding means 13 are connected in series. The door opening/closing detection switch means 27 can be always detected by fine current except for operating the driving source 10, and the number of lead wires can be reduced between the door switch device and the control device.

Description

  The present invention relates to a washing machine having a door switch device.

  A conventional drum type washing machine has a door switch device (see, for example, Patent Document 1). The configuration will be described below with reference to FIGS.

  As shown in FIG. 7, the door 1 is provided in the opening part of the washing machine main body 2, and opens and closes the opening part. As shown in FIG. 8, a hook 3 is attached to the door 1 so as to be movable in the direction of arrow A via a lever 4 for opening and closing the door. The hook 3 can lock the door 1 in a closed state by a door switch device 5 provided in the washing machine body 2.

  The door switch device 5 is configured as shown in FIGS. 9 and 10, the sliding member 6 is movable in the left-right direction by a spring 7, and the hook 3 of the door 1 is engaged when the door 1 is closed. Slide to move. Due to the movement of the sliding member 6, the operation member 8 is rotated and the door opening / closing detection switch means 9 detects the opening / closing of the door. Therefore, when the door is closed, the sliding member 6 is pushed rightward by the hook 3. 8 rotates, the contacts of the door opening / closing detection switch means 9 come into contact with each other, and a conductive state is established. When the door is opened, the contact points of the door open / close detection switch means 9 are separated from each other, so that the door open / close can be detected. The motor 11 rotates the drum 12. A holding means 13 is connected to the solenoid 10, and a part of the holding means 13 is engaged with a part of the sliding member 6, and the sliding member 6 is locked to lock the door 1 in the closed state.

  The locking means 14 locks the position of the holding means 13 and holds the door 1 in the locked state or unlocked state. The locking means 14 includes a heart-shaped cam 15 and a spring 16 as shown in FIG. Even if the energization is interrupted, the holding means 13 is locked and locked at that position by the action of the heart-shaped cam 15, and when the solenoid 10 is energized again, the locking position of the holding means 13 is changed. A part of the sliding member 6 and a part of the sliding member 6 are configured so as not to be engaged and locked.

  The micro switch 17 serving as a position detection means detects the holding state of the holding means 13 that holds the hook 3 in a state in which the hook 3 cannot be removed, and outputs that it is held.

  FIG. 11 is a control block diagram of the door switch device. The door opening / closing detection switch means 9, the solenoid 10, and the micro switch 17 (position detection means) are independently connected to the control device 40. The control device 40 includes a drive device 41 that drives the solenoid 10 and an arithmetic device that controls them. In addition, an electric wire 43 that supplies a signal, electric power, and the like is provided between the door switch device and the control device 40.

JP-A-10-272293

  However, in the structure of the conventional washing machine, the door opening / closing detection switch means 9, the solenoid 10, and the micro switch 17 (position detection means) of the door switch device are independently connected to the control device 40. For this reason, in order to connect the control device 40 and each functional part of the door switch device (door open / close detection switch means 9, solenoid 10, micro switch 17), six lead wires (electric wires 43) are required, For this reason, there is a problem that a member and man-hours are required and cost is increased.

  The present invention solves the above-described conventional problems, and has an object to reduce the number of wirings connecting the door switch device and the control device, thereby reducing the cost.

  In order to achieve the above object, the washing machine of the present invention includes a sliding member that slides and moves when the door hook is engaged by closing the door, holding means for preventing the door from opening, A door switch comprising a drive source for operating the holding means, a position detection switch means for detecting the position of the holding means, and a door open / close detection switch means provided in the vicinity of the sliding member for detecting opening / closing of the door A washing machine having a device, wherein the door opening / closing detection switch means is turned on to detect the closing of the door, and the door opening / closing detection switch means and the drive source for operating the holding means are connected in series, The door opening / closing detection switch means is always in a detectable state by a minute current except when the driving source is operated.

  As a result, the number of lead wires connecting the door opening / closing detection switch means, the drive source such as the solenoid, the position detection switch means and the control device of the door switch device is reduced from six to four, and the cost for wiring is reduced. Can be reduced.

  In the washing machine of the present invention, the number of lead wires connecting the door open / close detection switch means of the door switch device, the drive source such as a solenoid, the position detection switch means and the control device is reduced from six to four, Cost can be reduced.

The perspective view of the washing machine in Embodiment 1 of this invention Perspective view of door switch device and door of the washing machine (A) Sectional view of a state in which the door hook of the washing machine is inserted into the door switch device (b) Sectional view of a state in which the push plate portion of the door of the washing machine is inserted into the door switch device Perspective view of the inside of the door switch device of the washing machine Internal plan view with sliding member removed of door switch device of the washing machine Control block diagram of door switch device of the washing machine Cross section of a conventional washing machine Perspective view of door switch device and door of conventional washing machine (A) Top view of the inside of a door switch device of a conventional washing machine (b) Vertical sectional view of the door switch device of a conventional washing machine A perspective view of the interior of a door switch device of a conventional washing machine Control block diagram of door switch device of conventional washing machine

  The present invention includes a sliding member that slides and moves when the door hook is engaged, a holding unit that prevents the door from being opened, a drive source that operates the holding unit, and the holding unit. A washing machine having a door switch device comprising: a position detection switch means for detecting a position of the means; and a door opening / closing detection switch means provided in the vicinity of the sliding member for detecting the opening / closing of the door. The open / close detection switch means detects closing of the door by turning it on, and the door open / close detection switch means and the drive source for operating the holding means are connected in series, except when operating the drive source, The door opening / closing detection switch means is always in a state capable of being detected by a minute current.

  As a result, the number of lead wires connecting the door open / close detection switch means of the door switch device, the drive source such as the solenoid, the microswitch (position detection means) and the control circuit is reduced from six to four. Cost can be reduced.

  Further, according to the present invention, the door switch device allows the drive source to flow an electric current while detecting opening and closing of the door, and a minute current is passed through the drive source even when the holding means restrains the door hook. When the door opening / closing detection switch means detects the opening of the door, the washing motor is stopped.

  Accordingly, when the door open / close detection switch means detects the door opening while the drive source is operating or the door hook is restrained, safety can be ensured by stopping the washing motor.

  The embodiments of the present invention have been described above with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view of a state in which the door of the washing machine according to Embodiment 1 of the present invention is opened, and FIG. 2 is a perspective view of the door switch device and the door of the washing machine. As shown in FIG. 1, a hook 3 is provided on a door 1 that is a lid of a washing machine. The washing machine main body 2 incorporates a door switch device 5 having a hook insertion hole 21, and the hook 3 fits in the hook insertion hole 21 when the door 1 is closed. As shown in FIG. 2, the door 1 is provided with a lever 4 for rotating the hook 3. The hook 3 is integrally provided with a push plate portion 22. Therefore, the lever 4 causes the hook 3 and the push plate portion 22 to rotate together. The door switch device 5 is provided with a hook insertion hole 21 into which the hook 3 is inserted and a door opening detection hole 23 into which the push plate portion 22 is inserted.

  3 is a cross-sectional view of the door switch device 5. In particular, FIG. 3 (a) shows a state in which the hook 3 of the door 1 is inserted into the door switch device 5, and FIG. A state in which the plate portion 22 is inserted into the door switch device 5 is shown. The portion of the sliding member 6 into which the hook 3 is inserted is formed in a box shape. When the door 1 is closed, the hook 3 is inserted into the hook insertion hole 21 of the door switch device 5, and the sliding member 6 is Move in the direction (the right direction in FIG. 3A). By this movement, the hook 3 is locked to the outline of the door switch device 5 (around the lead wire 5 of FIG. 3A), and the box-shaped sliding member 6 holds the hook 3 (FIG. 3A). )) Apply pressure from left to right. Further, when the push plate portion 22 provided integrally with the hook 3 is inserted into the door opening detection hole 23 of the door switch device 5, the button 25 for detecting the opening / closing of the door 1 is in the rear direction (FIG. 3). Move to the right of (b). The contact surface of the push plate portion 22 with the button 25 is a flat surface.

  FIG. 4 is a perspective view of the inside of the door switch device 5. The sliding member 6 moved by the hook 3 is applied with a reaction force in the direction of arrow C by the spring 24, pulls the lever 4 to open the door 1, and pulls the sliding member 6 in the direction of arrow C by the hook 3. Can be moved. When the door 1 is closed, the button 25 is pushed by the push plate portion 22 and pushes the switch 27 which is a door opening / closing detection switch means via the spring 26. As a result, the switch 27 is turned on. On the other hand, when the door 1 is opened, the push plate portion 22 provided integrally with the hook 3 is separated from the button 25. As a result, the switch 27 is turned off. When the door 1 is locked, the solenoid 10 as a drive source is energized, and the holding means 13 moves in the lateral direction in FIG. The holding means 13 moved in the horizontal direction is moved in the vertical direction by the coupling mechanism component 28, and the moving direction is converted into the vertical direction.

  FIG. 5 is a plan view showing the inside of the door switch device 5 with the sliding member 6 removed. The coupling mechanism component 28 has a protrusion 30 at the tip, and when the protrusion 30 moves, the sliding member 6 is fixed and the door 1 is locked, or conversely, the sliding member 6 is released. Thus, the door 1 can be unlocked. When the holding means 13 is moved by the solenoid 10, the rotation lever 35 is rotated via the spring 29, and the switch 31 which is a position detection switch means is pushed. As a result, the door 1 is turned on when the lock is in the locked state, and is turned off when the door 1 is in the unlocked state. Here, the lead wires 32 and 33 are connected to the switch 27 and the switch 31, respectively, and an opening / closing signal for the door 1 can be sent to a control device (not shown) in the washing machine body 2.

  FIG. 6 is a control block diagram of the door switch device 5. The switch 27 serving as a door opening / closing detection switch means and the solenoid 10 are connected in series inside the door switch device. The switch 31 which is a position detection switch means is connected to the control device 40 independently. The control device 40 includes a drive device 41 that drives the solenoid 10 that is a drive source, and an arithmetic device that controls them. In addition, four electric wires 43 (for example, lead wires 32 and 33) for supplying signals, electric power, and the like are provided between the door switch device 5 and the control device 40.

  About the washing machine which has the door switch apparatus 5 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the lever 4 is pulled to open the door 1 and the hook 3 is rotated, the tip of the hook 3 accommodated in the hook insertion hole 21 of the door switch device 5 moves to slide the sliding member 6. 1 opens. The door 1 is closed by being pressed in the closing direction. At this time, since the hook 3 has a biasing force, the tip of the hook 3 is inserted into the hook insertion hole 21 of the door switch device 5, and the sliding member By sliding 6, the door 1 can be held in a closed state.

  Since the hook 3 and the push plate portion 22 are integrally formed, when the door 1 is closed, the push plate portion 22 is connected to the door opening detection hole 23 of the door switch device 5 in conjunction with the movement of the hook 3. The button 25 for inserting and detecting opening / closing of the door 1 moves in the back direction. The operation direction of the button 25 is set in the same direction as the rotation direction of the push plate portion 22. When the button 25 is pushed by the push plate portion 22, the switch 27, which is a door opening / closing detection switch means, is pushed via the spring 26, and the switch 27 is turned on. In this state, it is determined that the door 1 is closed.

  When opening the door 1, the hook 3 rotates in conjunction with the lever 4, and the push plate portion 22 is separated from the door opening detection hole 23, so that the button 25 is restored by the spring 26 and the switch 27 is in the OFF state. It becomes. In this state, it is determined that the door 1 is open.

  The sliding member 6 is given a reaction force in the direction of arrow C by a spring 24. When the lever 4 is pulled to open the door 1, the sliding member 6 moves in the direction of arrow C by the hook 3. When the door 1 is closed and locked to start washing, the solenoid 10 is energized, the holding means 13 moves in the horizontal direction, and the moving direction is converted into the vertical direction by the connecting mechanism component 28. The coupling mechanism component 28 has a protrusion 30 at the tip, and when the protrusion 30 moves, the protrusion 30 fits into the sliding member 6 to fix the door 1 or the protrusion 30 slides. The door 1 is released from the member 6. As a result, the door 1 can be locked or unlocked.

  When the holding means 13 is moved laterally by the solenoid 10, the rotating lever 35 is rotated via the spring 29, and the switch 31 serving as the position detection switch means is pushed. As a result, the door 1 is turned on when the lock is in the locked state, and is turned off when the door 1 is in the unlocked state. Here, lead wires 32 and 33 are connected to the switch 27 and the switch 31, and an opening / closing signal of the door 1 can be sent to the control device in the washing machine body 2. In particular, when the switch 27 is in the OFF state, it is determined that the door 1 is in an open state, and the control device of the washing machine stops the rotation of the motor (not shown) of the washing machine, and the washing machine The rotation of a rotating drum (not shown) mounted on is quickly stopped.

  The switch 27 serving as a door opening / closing detection switch means and the solenoid 10 are connected in series inside the door switch device. The switch 31 which is a position detection switch means is connected to the control device 40 independently. The control device 40 includes a drive device 41 that drives the solenoid 10 that is a drive source, and an arithmetic device that controls them. The drive device 41 that drives the solenoid 10 is in a state in which the switch 27 serving as the door opening / closing detection switch means can detect the opening / closing of the door 1 by always energizing a minute current except when the solenoid 10 is operated. Yes. Note that four electric wires 43 (for example, lead wires 32 and 33) for supplying signals, electric power, and the like are provided between the door switch device 5 and the control device 40.

  Further, the door switch device 5 supplies a current that allows the solenoid 10 to operate while detecting the opening / closing of the door 1 by the switch 27 that is a door opening / closing detection switch means. Further, the holding means 13 that prevents the door 1 from opening energizes the solenoid 10 even when the hook 3 of the door 1 is restrained. When the switch 27 detects the opening of the door 1, the motor for the washing machine is stopped. Let

  Thus, the number of lead wires (electric wires) connecting the door switch device 5 and the control device 40 is four, and the cost for wiring can be reduced. Further, even when the solenoid 10 as the driving source is operating or the hook 3 of the door 1 is being restrained, if the door is detected to be opened, the washing motor is stopped to ensure safety. it can.

  As described above, the washing machine according to the present invention can reduce the number of lead wires (electric wires) between the control device and the door switch device, and the door opening / closing detection switch means stops the rotation of the drum. Therefore, safety can be ensured, so that the present invention can be applied to uses such as clothes dryers and dishwashers.

DESCRIPTION OF SYMBOLS 1 Door 3 Hook 4 Lever 5 Door switch apparatus 6 Sliding member 10 Solenoid (drive source)
13 Holding means 21 Hook insertion hole 22 Push plate part 23 Door opening detection hole 25 Button 27 Switch (Door open / close detection switch means)
31 switch (position detection switch means)
40 control device 41 drive device 43 electric wire

Claims (3)

A sliding member that slides and engages with the hook of the door by closing the door;
Holding means for preventing opening of the door;
A drive source for operating the holding means;
Position detection switch means for detecting the position of the holding means;
A washing machine having a door switch device provided near the sliding member, the door opening and closing detection switch means for detecting the opening and closing of the door,
The door opening / closing detection switch means detects the closing of the door by turning on,
The door opening / closing detection switch means and the drive source for operating the holding means are connected in series,
A washing machine in which the door opening / closing detection switch means is always detected by a minute current except when the drive source is operated. The washing machine according to claim 1, wherein the door switch device passes a current that allows the drive source to operate while detecting opening and closing of the door. The door switch device applies a minute current to the drive source even when the holding means restrains the hook of the door, and stops the washing motor when the door open / close detection switch means detects the opening of the door. The washing machine according to claim 1, wherein

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