JP2016146983A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent failure caused by a fixing bolt for product transportation that is forgotten to be removed.SOLUTION: A washing machine includes: a water tub 82 for including a washing and dewatering tub 78 rotatably; a fixing metal fitting 84 fixed on an upper back surface side of the water tub 82; a fixing bolt 85 for fixing a back surface part 86 of a washing machine body 83 and the fixing metal fitting 84 during product transportation; and a power source cord 90 for supplying power. The fixing bolt 85 pinches a power source cord holding member 95 between its head part and a back plate 91 fixed to the back surface part 86, and it passes through a hole part 96 of the power source cord holding member 95, and it is screwed in the fixing metal fitting 84 via the back plate 91, a reinforcement plate 94 for reinforcing the back surface part 86 of the washing machine body 83. The power source cord 90 is pinched between a cord holding part 97 formed at the power source cord holding member 95 and the back plate 91. Thus, an operation cannot be performed without removing the power source cord 90 by removing the fixing bolt 85, and failure such as dewatering abnormal vibration caused by the fixing bolt 85 that is forgotten to be removed can be prevented.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a washing machine for washing laundry stored in a washing and dewatering tub.

  Conventionally, this type of washing machine has been designed to prevent problems such as the water tank that is supported in an anti-vibration manner in the washing machine body during product transportation to prevent the washing machine body from being damaged. A configuration has been proposed in which the machine body is fixed with fixing bolts and is removed when the product is installed (see, for example, Patent Document 1).

  FIG. 5 is a longitudinal sectional view of a conventional washing machine described in Patent Document 1. As shown in FIG.

  In FIG. 5, in the washing machine main body 1, the water tub 2 is supported in a suspended state in a suspended state by a suspension 3 having a vibration isolation structure from above, and is supported by a damper 4 so as to attenuate vibration from below. A washing and dewatering tub 5 formed in a cylindrical shape with a bottom is rotatably supported in the water tank 2, and the rotation of a motor 7 fixed to the outer bottom of the water tank 2 causes a motor pulley 8, a belt 9, and a drive pulley. 6 is transmitted to the washing and dewatering tub 5 via 6 and the like so as to be driven to rotate such as washing, rinsing and dehydration. The water tank 2 fixes the acceleration sensor 10, and when the water tank 2 vibrates and acceleration is applied to the acceleration sensor 10, an internal vibrator is shaken to convert the displacement into an electric signal and transmitted to a control device (not shown). Used for vibration control. In addition, a reed switch 14 is attached to the water tank 2, and an ON-OFF signal is transmitted to a control unit (not shown) by a magnet 15 attached to the drive pulley 6, and used for rotation control and the like.

  When the laundry put in the washing and dewatering tub 5 is offset during the dehydration process, the water tub 2 is supported in a swingable manner so as to absorb the offset and perform dewatering rotation. 1 can be prevented, but if an abnormally large deviation occurs, the water tank 2 may cause abnormal vibration. If the aquarium 2 vibrates abnormally, there is a possibility that a large noise may be generated from the washing machine or the washing machine may be damaged. In order to solve the problem, according to the determination result of the vibration of the aquarium 2 detected by the acceleration sensor 10 Thus, it is controlled to perform operations such as reducing the number of rotations by rotation control, or stopping the dehydrating operation and supplying water again to eliminate the deviation of the laundry.

  On the other hand, in the above configuration, since the water tank 2 is configured to be swingable inside the washing machine body 1, if the water tank 2 swings abnormally greatly during transportation of the washing machine, it is attached to the water tank 2 itself or the water tank 2. There is a possibility that the member that is applied will collide with the inner wall surface of the washing machine main body 1 and other members attached inside the washing machine main body 1 to cause damage. Therefore, in order to solve such problems at the time of transport and transfer, a transfer fitting 16 is attached between the washing machine main body 1 and the water tub 2 with a fixing bolt 17, and is fixed and held so that the water tub 2 does not swing. Is installed in the user's home, the structure is such that the fixing bolt 17 and the transfer fitting 16 are removed to release the water tank 2 from being fixed.

JP-A-3-264088

However, in the conventional configuration, when the washing bolt is forgotten to be removed when the washing machine is newly purchased and the washing / dehydrating operation is performed, it is attached for the purpose of reducing vibration when the washing / dehydrating tub rotates. The anti-vibration effect by the suspension and the damper does not function, and there are problems of safety that the washing machine moves to the product, abnormal noise and vibration, and damage to the members.

  The present invention solves the above-described conventional problems, and is a washing machine that can solve the problem of forgetting to remove the fixing bolt at the time of installation, and can prevent problems such as abnormal vibration caused by forgetting to remove the fixing bolt. The purpose is to provide.

  In order to solve the above-described conventional problems, a drum-type washing machine of the present invention includes a washing machine body, a water tank elastically supported in the washing machine body so as to be swingable, and a rotatable inside the water tank. A washing / dehydrating tub that is supported; a fixing member that fixes the washing machine body and the water tub during transportation; and a power cord having a plug; and the fixing operation between the water tub and the washing machine body by the fixing member. Thus, the power cord is fixed to the washing machine body.

  As a result, the water tank unit can be fixed to the washing machine body to prevent the product from swinging during product transportation, and the product cannot be operated without the power cord removed unless the fixing member is removed. Forgetting to remove the member can be eliminated, and problems such as abnormal dehydration vibration caused by forgetting to remove the fixing member can be prevented.

  The drum type washing machine of the present invention can prevent problems such as abnormal dehydration vibration caused by forgetting to remove the fixing bolts by securely removing the fixing bolts for transportation.

The longitudinal cross-sectional view of the drum type washing machine in embodiment of this invention Block diagram of the drum type washing machine Rear view of the drum-type washing machine viewed from the back side Cross section of the main part of the drum type washing machine Internal mechanism diagram of conventional drum type washing machine

  According to a first aspect of the present invention, there is provided a washing machine body, a water tank elastically supported in a swingable manner in the washing machine body, a washing and dewatering tank rotatably supported in the water tank, and the washing machine during transportation. A fixing member for fixing the machine body and the water tub, and a power cord having a plug, and the power cord is fixed to the washing machine body by a fixing operation of the water tank and the washing machine body by the fixing member. Is.

  As a result, the aquarium unit can be fixed to the washing machine body to prevent swinging during product transportation, and the product cannot be operated with the power cord removed unless the fixing member is removed. Forgetting to remove the fixing member can be eliminated, and problems such as abnormal dehydration vibration caused by forgetting to remove the fixing member can be prevented.

  According to a second invention, in the first invention, a fixing bolt for fixing the washing machine main body and the water tub is provided, a cord holding member is fixed to the washing machine main body by the fixing bolt, and the cord holding member and the The power cord is sandwiched between the washing machine body.

With this configuration, the water tub unit can be fixed to the washing machine body to prevent swinging during product transportation, and the product can be operated by removing the power cord unless the fixing bolt is securely removed. Therefore, it is possible to eliminate forgetting to remove the fixing bolt, and to prevent problems such as abnormal dehydration vibration caused by forgetting to remove the fixing bolt.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a drum type washing machine in an embodiment of the present invention.

  In FIG. 1, a water tub unit 76 rotatably stores a washing / dehydrating tub 78 formed in a bottomed cylindrical shape in a water tub 82, and its axial direction is toward the back side that is the bottom of the washing / dehydrating tub 78. A rotating shaft 79 inclined downward from the horizontal or horizontal direction is supported by a bearing 80 provided on the back surface of the water tank 82, and a motor 81 for driving a washing and dewatering tank is connected to the rotating shaft 79. Has been.

  As described above, the water tank unit 76 is a vibration system including the washing and dewatering tank 78, the water tank 82, the motor 81, and the like. The weight is supported by a damping anti-vibration damper 70 attached between a base 73 of the main body 83 and a support plate 74 provided on the lower surface of the water tank 82 and fixed by a fixture 77 or the like. A first anti-vibration spring 71 between the upper support fitting 75 fixed to the upper part and the upper surface of the washing machine main body 83 and a second anti-vibration spring 72 between the back part 86 of the washing machine main body 83. It is supported in a vibration-proof manner so that it can swing freely.

  A door 87 is pivotally supported on the inclined surface of the front surface of the washing machine main body 83 so that the door 87 can be opened and closed. The user puts laundry clothes into the washing and dehydrating tub 78 from the door 87 portion.

  The control unit 31 that is arranged at the lower inner part of the washing machine main body 83 and that is configured by a microcomputer or the like that controls a series of processes such as washing, rinsing, and dehydration is an input of the operation display unit 25 disposed above the door 87. A signal is transmitted to the setting means 35 and the display means 36 and an acceleration sensor 88 provided on the upper outer wall of the water tank 82 to detect the vibration of the water tank unit 76, and the rotation of the motor 81 and the like is controlled.

  The acceleration sensor 88 is composed of, for example, a semiconductor acceleration sensor, and is not composed of acceleration in one direction, but is composed of an acceleration sensor in multiple axes (two or three axes) such as front, rear, left, right and up. This is because the actual vibration of the aquarium unit 76 is not necessarily limited to one direction, so that the movement of the aquarium unit 76 is detected with high accuracy using a multi-axis acceleration sensor.

  An upper support fitting 75 is fixed to the upper back side of the water tank 82, and a fixing fitting 84 is fixed to the upper support fitting 75. The fixing bracket 84 fixes the water tank unit 76 to the washing machine main body 83 in order to prevent the water tank unit 76 from swinging during product transportation.

  The back plate 91 is fixed to the back surface portion 86 of the washing machine main body 83 by a back plate fixing screw 92, and the fixing bracket 84 is washed from the back surface portion 86 side of the washing machine main body 83 by screwing the fixing bolt 85. It is fixed to the back plate 91 via a reinforcing plate 94 that reinforces the back portion 86 of the machine body 83. A power cord holding member 95 is interposed between the back plate 91 and the fixing bolt 85, and the power cord holding member 95 is sandwiched between the back plate 91 and the fixing bolt 85 when the fixing bolt 85 is screwed to the fixing bracket 84. Fix it.

  Hereinafter, the fixing structure of the fixing metal 84 will be described in detail with reference to FIG.

  The fixing bolt 85 is necessary only when the washing machine is transported, and is removed when the washing machine is installed and installed.

  FIG. 2 is a block circuit diagram of the drum type washing machine in the embodiment of the present invention.

  In FIG. 2, the AC power of the commercial power supply 20 is rectified by a rectifier 21, and the motor 81 is rotationally driven by the inverter circuit 24 using the DC power smoothed by the smoothing circuit including the choke coil 22 and the smoothing capacitor 23 as the driving power. .

  Further, the control unit 31 controls the rotation of the motor 81 based on the driving instruction input from the input setting unit 35 and the monitoring information of the driving state detected by each detecting unit (not shown), and the load driving unit 26 controls the operations of the water supply valve 27, the drain valve 28, the blower fan 12, and the heater 29, and the display means 36 transmits a display signal so that the user can know the operating state and the control state.

  The motor 81 includes a stator having three-phase windings 7a, 7b, and 7c and a rotor (not shown) having two-pole permanent magnets, and is provided with three position detection elements 30a, 30b, and 30c. The rotation is controlled by a PWM control inverter circuit 24 configured as a motor and configured by switching elements 24a to 24f. The rotor position detection signals detected by the position detection elements 30a, 30b, and 30c are input to the control unit 31 configured by a microcomputer or the like. Based on this rotor position detection signal, the drive circuit 32 performs PWM control of the on / off states of the switching elements 24a to 24f, thereby controlling the energization of the three-phase windings 7a, 7b, and 7c of the stator to control the motor 81. Rotate at the required speed.

  The control unit 31 includes a rotation speed detection unit 33 to which detection outputs of the three position detection elements 30a, 30b, and 30c are input. The rotation speed detection unit 33 is any of the three position detection elements 30a, 30b, and 30c. The period is detected in response to the change in the state of the signal, and the rotation speed of the motor 81 is calculated from the period. Since the load applied to the washing / dehydrating basin 78, that is, the motor 81 fluctuates in accordance with the amount of clothes put into the washing / dehydrating basin 78, the detection output of the rotation speed detecting unit 33 is supplied to the cloth amount detecting unit 34. For example, the amount of cloth put into the washing and dewatering tub 78 is detected based on the detected number of rotations. The detection output of the rotation speed detection unit 33 of the motor 81 corresponds to the rotation speed of the washing / dehydrating tub 78.

  The acceleration sensor 88 provided in the aquarium 82 detects at least accelerations in the vertical and horizontal directions of the aquarium unit 76, and the acceleration detection unit 39 configured in the control unit 31 is a digital signal or an analog signal from the acceleration sensor 88. The displacement calculation unit 40 calculates the detected acceleration data, obtains displacement amount data (amplitude value) of the water tank unit 76, and stores it in the storage means 98. And the control part 31 determines the vibration state of the water tank unit 76 from the data, and performs the dehydration control of a process and the detection of the presence or absence of the fixture 84 mentioned later.

  The notifying means 99 notifies the user of the end notification at the end of the process and the abnormality notification when an abnormality occurs.

  FIG. 3 is a rear view seen from the back side of the drum type washing machine in the embodiment of the present invention, and FIG. 4 is a cross-sectional view of the main part of the drum type washing machine.

3 and 4, the fixing bolt 85 sandwiches the power cord holding member 95 between the head and the back plate 91, passes the screw portion through the hole 96 of the power cord holding member 95, and reinforces the back plate 91 and the reinforcing plate 85. The plate 94 is screwed to the fixture 84. Then, the fixing bolt 85 is fixed to the fixing bracket 8.
4, the vicinity of the plug portion of the power cord 90 is held between the cord 91 and the back plate 91 by the cord holding portion 97 formed on the power cord holding member 95.

  With the above configuration, by fixing the water tank unit 76 to the washing machine main body 83, it is possible to prevent swinging during product transportation, and the power cord 90 is removed unless the fixing bolt 85 is removed. Since operation cannot be performed, forgetting to remove the fixing bolt 85 can be prevented.

  As described above, in the present embodiment, the fixing bolt 85 for fixing the back surface portion 86 and the fixing bracket 84 of the washing machine main body 83 during product transportation includes the back plate 91 fixed to the head portion and the back surface portion 86. A power cord holding member 95 is sandwiched between the fixing plate 84 and a reinforcing plate 94 that reinforces the back plate 91 and the back portion 86 of the washing machine body 83 through the hole 96 of the power cord holding member 95. The water tank unit 76 is fixed to the washing machine main body 83 by being configured so that the power cord 90 is sandwiched between the cord holding portion 97 formed on the power cord holding member 95 and the back plate 91. The product can be prevented from swinging during product transportation, and the product cannot be operated with the power cord 90 removed unless the fixing bolt 85 is securely removed. Occurrence Problems such as dehydration abnormal vibration can be prevented that.

  In the present embodiment, the fixing bracket 84 is fixed to the washing machine main body 83 by the fixing bolt 85, but other fixing members such as a fixing pin may be used.

  Further, the power cord 90 is sandwiched between the cord holding portion 97 and the washing machine main body 83 that are fastened together by the fixing bolt 85. For example, a locking portion is formed on the power cord 90, and the locking portion is fixed to the fixing bolt 85. May be configured to be fixed to the washing machine main body 83, and other configurations may be adopted as long as the power cord 90 can be fixed simultaneously when the fixing bracket 84 is fixed to the washing machine main body 83 by the fixing bolt 85. it can.

  As described above, according to the present invention, the power cord can be removed to operate without removing the fixing bolt that fixes the fixing bracket to the washing machine body in order to prevent swinging during product transportation. This makes it possible to prevent problems such as abnormal vibrations due to dehydration caused by forgetting to remove the fixing bolts, and thus can be applied to other washing machine applications.

31 Control Unit 76 Water Tank Unit 78 Washing / Dehydrating Tank 79 Rotating Shaft 81 Motor 82 Water Tank 83 Washing Machine Body 84 Fixing Bracket 85 Fixing Bolt 86 Back Portion 90 Power Cord 91 Back Plate 94 Reinforcement Plate 95 Power Cord Holding Member 96 Hole 97 Cord Holding part

Claims (2)

A washing machine main body, a water tub elastically supported in a swingable manner in the washing machine main body, a washing and dewatering tub rotatably supported in the water tub, the washing machine main body and the water tub during transportation And a power cord having a plug, and the power cord is fixed to the washing machine main body by a fixing operation of the water tub and the washing machine main body by the fixing member. Machine. A fixing bolt for fixing the washing machine main body and the water tub is provided, a cord holding member is fixed to the washing machine main body by the fixing bolt, and the power cord is sandwiched between the cord holding member and the washing machine main body. The washing machine according to claim 1.

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