JP7336632B2 - washing machine - Google Patents

Description

The present disclosure relates to washing machines.

Patent Literature 1 discloses a vertical washing machine in which lead wires are fixed below a water tub.

The vertical washing machine in Patent Document 1 includes a housing, a water tank elastically supported inside the housing, a washing and dehydrating water tank rotatably provided inside the water tank, and a washing machine provided at the bottom of the water tank. It includes a motor that rotates and drives the dewatering tank, a motor holder that is fixed to the lower part of the water tank and holds the motor, a control device that controls the motor, and lead wires that connect the motor and the control device. A lead wire connected to the motor is fixed to the motor holding portion by a lead wire locking portion provided on the motor holding portion.

JP-A-9-276587

The present disclosure provides a washing machine that suppresses disconnection of lead wires, reduces the material cost of the motor holding portion, and has a high degree of freedom in the position where the lead wire locking portion is attached.

A washing machine according to the present disclosure includes a housing, a water tank supported in a swingable manner inside the housing, a washing and dewatering tank rotatably provided inside the water tank, and rotating the washing and dewatering water tank. A motor to be driven, a motor holding portion for fixing the motor to the outer bottom of the water tank, a control device arranged on the back side of the housing for controlling the motor, and the motor and the control device are connected. a lead wire, a water tank side mounting portion formed of a flame-retardant material and disposed on the outer bottom of the water tank, and a locking portion for locking the lead wire to the water tank side mounting portion. , the water tank side mounting portion has a locking surface on which the locking portion is provided, and a shielding surface that is vertically bent from the locking surface, and the shielding surface is a portion of the locking portion. The side opposite to the center direction of the water tank is not shielded, and the locking part shields the center direction of the water tank .

The washing machine according to the present disclosure can suppress disconnection of the lead wire, reduce the material cost of the motor holding portion, and increase the degree of freedom of the position where the lead wire locking portion is attached.

Longitudinal sectional view of the washing machine according to Embodiment 1 Bottom rear view of the washing machine with the back cover removed AA sectional view in FIG. (a) Front view of the water tank side mounting part of the washing machine, (b) Side view of the water tank side mounting part of the washing machine, (c) Perspective view of the water tank side mounting part of the washing machine The perspective view which shows the circumference|surroundings of the water tank side attachment part attached to the water tank of the washing machine.

Hereinafter, embodiments will be described in detail with reference to the drawings. It should be noted that the present invention is not limited by the accompanying drawings and the following description.

(Embodiment 1)
(Basic configuration of washing machine)
1 is a longitudinal sectional view of a washing machine according to Embodiment 1. FIG.

Washing machine 100 includes outer frame 101 , upper frame 102 and lower frame 103 . The upper frame 102 is fixed to the upper part of the outer frame 101, and is formed so that the laundry inlet 105 opens substantially in the center. The lower frame 103 is made of resin and fixed to the lower portion of the outer frame 101 .

A cover 104 is pivotally supported on the rear upper part of the upper frame 102 so as to cover the laundry inlet 105 so as to be openable and closable. An operation display unit 106 is provided behind the lid 104, and the operation display unit 106 includes a display unit and an operation unit. The user confirms the information displayed on the display unit while operating the operation unit, and sets the operating conditions of the washing machine.

Inside the outer frame 101, a bottomed cylindrical water tank 107 is elastically supported by a suspension (not shown).

The drain pipe 115 is arranged so as to communicate the inside and outside of the bottom of the water tank 107 . The water accumulated inside the water tank 107 is discharged from the water tank 107 by opening a drain valve (not shown), and discharged to the outside of the washing machine 100 through the drain pipe 115 .

A washing and dehydrating tub 109 is rotatably held inside the tub 107 . A large number of dehydration holes 112 are formed in the side wall of the washing/dehydration tub 109 to allow washing water to pass through the inside and outside of the washing/dehydration tub 109 . A balancer 111 is provided above the washing/drying tub 109 to suppress rattling of the washing/drying tub 109 during dehydration. A pulsator 110 is rotatably provided at the bottom of the washing and dewatering tub 109 . By rotating the pulsator 110, the laundry inside the washing and dehydrating tub 109 can be agitated.

At the center of the lower part of the water tank 107, a motor holding part 120, which is a plate-shaped metal component, is arranged. A transmission mechanism 126 attached to the outer bottom of the water tank 107 and a motor 121 that drives the transmission mechanism 126 via a belt 122 are fixed to the motor holding portion 120 . The belt 122 is bridged between a motor-side pulley 123 provided on the motor 121 and a mechanical-side pulley 124 provided on the transmission mechanism 126 side, and transmits the rotational driving force of the motor 121 to the transmission mechanism 126. .

The transmission mechanism 126 is provided with a rotary shaft 125, a reduction gear (not shown), a clutch (not shown) for switching the connection destination of the rotary shaft 125, and a brake (not shown). The rotating shaft 125 is connected to the pulsator 110 and the washing/dehydrating tub 109, respectively. By switching the clutch, the transmission mechanism 126 rotates the pulsator 110 alone, or rotates the pulsator 110 and the washing/dehydrating tub 109 at the same time.

A part of the rear surface of the outer frame 101 is open, and a controller box 113 containing a control board (not shown), which is a control device, is arranged in the opening. The control board controls the motor 121, the transmission mechanism 126 and the like to execute a series of washing operations. The rear cover 114 is arranged to cover the opening of the outer frame 101 , and a rear cover bulging portion 114 a is formed near the rear of the controller box 113 .

(Lead)
2 is a lower rear view of the washing machine according to Embodiment 1 with the rear cover removed, and FIG. 3 is a cross-sectional view taken along line AA in FIG.

As shown in FIGS. 2 and 3, the lead wires 127 drawn out from the motor 121 are routed to the rear surface of the lower frame 103, and are connected to the controller box 113 through the box opening 113a formed at the bottom of the controller box 113. inserted inside. The lead wires 127 electrically connect the control board and the motor 121 to supply power and transmit electrical signals.

The lead wires 127 on the control board side are engaged with the lower frame side attachment portion 140 , and the lower frame side attachment portion 140 is arranged on the lower frame 103 below the controller box 113 . A lead wire 127 on the motor 121 side is engaged with a water tank side mounting portion 130 , and the water tank side mounting portion 130 is fixed to the lower portion of the water tank 107 . The water tank side mounting portion 130 is arranged so as to be substantially parallel to the lower frame side mounting portion 140 at a position near the lower frame side mounting portion 140 in order to reduce stress concentration, which will be described later.

The lead wire 127 is locked between the water tank side mounting portion 130 and the lower frame side mounting portion 140 so as to have a loose lead wire portion 127a. As will be described later, the distance between the water tank side mounting portion 130 and the lower frame side mounting portion 140 fluctuates greatly due to the vibration of the water tank 107. Therefore, the lead wire 127 is broken by providing the lead wire slack portion 127a. is deterred.

(Water tank side mounting part)
4(a) is a front view of the water tank side mounting portion of the washing machine according to Embodiment 1, FIG. 4(b) is a side view of the water tank side mounting portion of the washing machine, and FIG. FIG. 5 is a perspective view of the water tank side mounting portion of the washing machine, and FIG. 5 is a perspective view showing the periphery of the water tank side mounting portion mounted to the water tank of the washing machine.

As shown in FIGS. 3, 4, and 5, the water tank side mounting portion 130 is formed in a plate shape from a flame-retardant member such as metal, and is a component separate from the motor holding portion 120. As shown in FIG. By forming the water tank side mounting portion 130 and the motor holding portion 120 as separate parts, the fixing position of the lead wire 127 to the water tank 107 can be freely arranged.

As shown in FIGS. 3, 4 and 5, the water tank side mounting portion 130 is composed of a locking surface 131 and a shielding surface 132 vertically bent from the locking surface 131. A positioning hole 136, a screw hole 135, and a binding band hole 133 are formed in 131, respectively.

A positioning boss 137 is formed on the outer bottom of the water tank 107 at a position facing the positioning hole 136 . The water tank side mounting portion 130 is arranged in such a manner that the shielding surface 132 is positioned toward the center of the water tank 107 with the positioning boss 137 fitted in the positioning hole 136 . The water tank side mounting portion 130 is fixed to the outer bottom portion of the water tank 107 in a screw hole 135 with a screw 134 in a positioned state. It should be noted that the water tank side attachment portion 130 can be easily attached and detached by removing the screws 134 .

The binding band holes 133 are formed at two locations on the locking surface 131, namely an upstream binding band hole 133a and a downstream binding band hole 133b. The lead wire 127 is bound with two binding bands 150, ie, an upstream binding band 150a and a downstream binding band 150b, so as to have substantially the same spacing as the binding band holes 133 at two locations. The upstream binding band 150a and the downstream binding band 150b are inserted into the upstream binding band hole 133a and the downstream binding band hole 133b, respectively, in a state where the lead wires 127 are bound, and the locking surfaces are engaged. 131 is locked to the back surface.

The shielding surface 132 is formed in the vicinity of the binding band hole 133b on the downstream side, and is arranged to shield the lead wire 127 from the drainage pipe 115 .

The operation of washing machine 100 configured as described above will be described below.

(Vibration of water tub during washing operation)
The user opens the lid 104, puts the laundry into the washing and dewatering tub 109 through the laundry inlet 105, and operates the operation display unit 106 to turn on the power. Subsequently, the user operates the operation display unit 106 to select various courses and start the washing operation. Various courses are composed of various processes such as a washing process, a rinsing process, and a dehydration process. When a series of steps in the set course is finished, the washing operation is finished.

During the washing operation, the water tub 107 oscillatably supported by the suspension vibrates along with the operation of the washing and dewatering tub 109 and the pulsator 110 . The lead wire 127 fixed to the water tank side mounting portion 130 oscillates greatly with the vibration of the water tank 107, while the lead wire 127 fixed to the outer frame 101 does not substantially vibrate. Therefore, stress concentrates on the lead wire 127 at the locked portion by the binding band 150b on the downstream side of the water tank side mounting portion 130 and the binding band 150a on the upstream side of the lower frame side mounting portion 140, and there is a risk of disconnection and ignition. There is The water tank side mounting portion 130 and the lower frame side mounting portion 140 in the present embodiment are made of a flame-retardant member, and can suppress the spread of ignition of the lead wire 127 . Therefore, the water tank side mounting portion 130 can suppress the spread of fire to the water tank 107 due to the fire occurring on the locking surface 131 .

The water tank side mounting portion 130 in the present embodiment is arranged near the controller box 113 and near the outer periphery of the water tank 107 in order to suppress disconnection due to stress concentration, as described above. The water tank side mounting portion 130 in this embodiment is a component separate from the motor holding portion 120 and is directly fixed to the water tank 107 at a position near the lower frame side mounting portion 140 . This eliminates the need to extend the motor holding portion 120 to the vicinity of the outer periphery of the water tank 107, and the motor holding portion 120 can be made small.

Further, when manufacturing a plurality of models of washing machines with different sizes of water tanks, by changing the mounting position of the water tank side mounting part 130, the water tank side mounting part 130 can be positioned near the outer periphery of the water tank 107 on the back side of the washing machine 100. can be placed. Therefore, by forming the water tub side mounting portion 130 and the motor holding portion 120 as separate parts, the parts can be shared among a plurality of models of washing machines having different sizes of water tubs.

The water tank side attachment portion 130 has a shielding surface 132 formed in the vicinity of the drain pipe 115 which is a resin component. As a result, the drain pipe 115 is shielded from the vicinity of the binding band 150b on the downstream side, which may catch fire, and the spread of fire to the drain pipe 115 can be suppressed. The lead wire 127 routed from the motor 121 is largely bent in the vicinity of the upstream binding band hole 133a and is locked by the binding band 150 in the upstream binding band hole 133a. Since the shielding surface 132 is formed only in the vicinity of the binding band 150b on the downstream side, it does not come into contact with the lead wire 127 that is greatly bent on the upstream side. This can prevent breakage of the lead wire 127 in contact with the shielding surface 132 during vibration during the washing operation.

(action, etc.)
As described above, in the present embodiment, washing machine 100 includes outer frame 101, upper frame 102, and lower frame 103, water tank 107 swingably supported inside outer frame 101, water tank a washing and dewatering tub 109 rotatably provided inside the washing and dewatering tub 107, a motor 121 for rotating the washing and dewatering tub 109, a control board disposed on the back side of the outer frame 101 for controlling the motor 121, It has a lead wire 127 that connects the motor 121 and the control board, and a water tank side mounting portion 130 that is arranged on the outer bottom of the water tank 107 and fixes the lead wire 127 .

As a result, the water tank side mounting portion 130 can be mounted in the vicinity of the outer periphery of the water tank 107, and the motor holding portion 120 can be made small. Therefore, breakage of the lead wire 127 can be suppressed, and the material cost of the motor holding portion 120 can be reduced.

As in the present embodiment, the water tank side mounting portion 130 may be made of a flame-retardant material, and may have a shielding surface 132 that shields the center direction of the water tank 107 when attached to the water tank 107. .

As a result, the flame-retardant member can shield the locking portion of the lead wire 127 from the resin parts such as the drainage pipe 115 formed on the center side of the water tank 107 . Therefore, when the locking portion of the lead wire 127 is broken and catches fire, it is possible to prevent the fire from spreading to resin components such as the drain pipe 115 .

As in this embodiment, the shielding surface 132 may be formed to cover the portion where the lead wire 127 is locked by the binding band 150b on the downstream side.

As a result, the bent portion of the lead wire 127 does not come into contact with the shielding surface 132 in the vicinity of the binding band hole 133a on the upstream side. Therefore, the shielding surface 132 can prevent the lead wire 127 from breaking.

(Other embodiments)
As described above, Embodiment 1 has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this.

Therefore, other embodiments will be exemplified below.

In Embodiment 1, washing machine 100, which is a vertical washing machine, has been described as an example of the washing machine. The washing machine is not limited to vertical washing machines as long as it includes a water tub and a control device that are swingably supported in a housing. The washing machine may be a twin tub washing machine.

In Embodiment 1, metal was described as an example of the flame-retardant member. The flame-retardant member is not limited to metal, and may be ceramic or flame-retardant resin.

The present disclosure is applicable to washing machines in which lead wires electrically connect the motor and the controller. Specifically, the present disclosure is applicable to vertical washing machines, twin-tub washing machines, and the like.

100 washing machine 101 outer frame (casing)
102 upper frame 103 lower frame 104 lid 105 laundry inlet 106 operation display unit 107 water tub 109 washing and dehydrating tub 110 pulsator 111 balancer 112 dehydration hole 113 controller box 113a box opening 114 rear cover 114a rear cover bulge 115 Drain pipe 120 Motor holding part 121 Motor 122 Belt 123 Motor side pulley 124 Mechanism side pulley 125 Rotating shaft 126 Transmission mechanism 127 Lead wire 130 Water tank side mounting part 131 Locking surface 132 Shielding surface 133 Tie band hole 133a Tie band on the upstream side Use hole 133b Downstream binding band hole 134 Screw 135 Screw hole 136 Positioning hole 137 Positioning boss 140 Lower frame side mounting portion 150 Binding band 150a Upstream binding band 150b Downstream binding band

Claims (3)

a housing;
a water tank swingably supported inside the housing;
a washing and dehydrating tub rotatably provided inside the tub;
a motor for rotating the washing and dewatering tub;
a motor holder that fixes the motor to the outer bottom of the water tank;
a control device disposed on the back side of the housing for controlling the motor;
a lead wire connecting the motor and the control device;
a water tank side mounting portion formed of a flame-retardant member and disposed on the outer bottom of the water tank;
a locking portion that locks the lead wire to the water tank side mounting portion;
The water tank side mounting portion has a locking surface on which the locking portion is provided, and a shielding surface that is vertically bent from the locking surface,
The washing machine, wherein the shielding surface does not shield the opposite side of the engaging portion facing the center of the water tub, but shields the engaging portion facing the center of the water tub. A resin component is provided on the center side of the outer bottom of the water tank,
2. The washing machine according to claim 1 , wherein said shielding surface is provided between said resin component and an engaging portion closer to said control device . 3. The washing machine according to claim 2, wherein said locking portion includes a binding band hole formed in said locking surface, and a binding band inserted into said hole to bind said lead wires.

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