JP2020174898A - Washing machine - Google Patents

Abstract

To provide a washing machine that can suppress an occurrence of fire due to breakage of a lead wire and can be easily assembled.SOLUTION: The washing machine 100 in the present disclosure includes a water tub 107 oscillatably supported inside an outer frame 101, a washing and dewatering tub 109 rotatably provided inside the water tub 107, a motor 121 that is disposed at a lower part of the water tub 107 and rotationally drives the washing and dewatering tub 109, a control board that is disposed on a rear side of the outer frame 101 and controls the motor 121, a lead wire 127 that connects the motor 121 to the control board, and a lower frame body side attachment part 140 that is disposed on a lower frame body 103 and fixes the lead wire 127. The lower frame body side attachment part 140 is formed of a flame-retardant member in an approximately U shape, fixes the lead wire 127 inside the approximately U shape, and is disposed so as to be opened on the rear side of the outer frame 101. Thus, it is possible to suppress an occurrence of fire due to breakage of the lead wire 127 and the lead wire 127 can be easily attached and detached.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a washing machine.

Patent Document 1 discloses a vertical washing machine in which a lead wire is fixed inside the back surface of a housing. The vertical washing machine in Patent Document 1 is arranged in a housing, a water tank elastically supported inside the housing, a washing / dehydrating tank rotatably provided inside the water tank, and a lower portion of the water tank for washing. It includes a motor for rotating and driving the dehydration tank, a control device for controlling the motor, and a lead wire for connecting the motor and the control device. The lead wires connected to the motor are bundled together, routed to the housing side, and fixed inside the back surface of the housing.

Further, as a conventional washing machine, a configuration is known in which a flame-retardant tape made of glass fiber is wound around a lead wire to prevent a fire from occurring when the lead wire is broken.

Japanese Unexamined Patent Publication No. 9-276587

In the conventional configuration, when the water tank vibrates during the washing operation, stress is concentrated on the lead wire fixed to the housing side, and there is a risk that the wire may break and a fire may occur. Therefore, in the conventional washing machine, the flame-retardant tape is wrapped around the place where stress is concentrated, but the configuration in which the tape is wrapped around the lead wire has low workability at the time of assembly and the price of the flame-retardant tape is high. There was a problem that it was expensive.

The present disclosure provides a washing machine that suppresses a fire due to a break in a lead wire and is easy to assemble.

The washing machine in the present disclosure is arranged below the housing, a water tank swayably supported inside the housing, a washing / dehydrating tank rotatably provided inside the water tank, and a lower portion of the water tank. A motor that rotationally drives the washing / dehydrating tub, a control device that is arranged on the back side of the housing and controls the motor, a lead wire that connects the motor and the control device, and a housing. It is provided on the body and includes a housing-side mounting portion for fixing the lead wire. The housing-side mounting portion is formed in a substantially U-shape by a flame-retardant member, and the lead wire is fixed inside the substantially U-shape and is arranged so as to open on the back side of the housing.

The washing machine in the present disclosure can be easily assembled while suppressing a fire caused by a break in the lead wire.

Longitudinal sectional view of the washing machine according to the first embodiment Lower rear view with the back cover of the washing machine removed AA sectional view in FIG. External perspective view showing the circumference of the lower frame side mounting part of the washing machine Vertical cross-sectional view showing the circumference of the lower frame side mounting portion of the washing machine Vertical cross-sectional view showing the circumference of the controller box of the washing machine External perspective view showing the circumference of the lower frame side mounting portion of the washing machine according to the second embodiment.

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

(Embodiment 1)
(Basic configuration of washing machine)
FIG. 1 is a vertical cross-sectional view of the washing machine according to the first embodiment.

The washing machine 100 includes an outer frame 101, an upper frame body 102, and a lower frame body 103. The upper frame body 102 is fixed to the upper part of the outer frame 101, and is formed so that the laundry input port 105 opens substantially in the center. The lower frame body 103 is made of resin and is fixed to the lower part of the outer frame 101.

A lid 104 is arranged on the rear upper part of the upper frame body 102 so as to cover the laundry input port 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 water tank 107 formed in a bottomed cylindrical shape is elastically supported by a suspension (not shown).

Water can be stored inside the water tank 107, and the collected water is discharged from the drain pipe (not shown) by opening the drain valve (not shown).

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

A motor holding portion 120, which is a metal component formed in a plate shape, is arranged in the center of the lower part of the water tank 107. A transmission mechanism 126 attached to the outer bottom of the water tank 107 and a motor 121 for driving the transmission mechanism 126 via a belt 122 are fixed to the motor holding portion 120. The belt 122 is bridged between the motor-side pulley 123 provided on the motor 121 and the 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 rotary shaft 125 is connected to the pulsator 110 and the washing / dehydrating tub 109, respectively.
The transmission mechanism 126 rotates the pulsator 110 independently or simultaneously rotates the pulsator 110 and the washing / dehydrating tub 109 by switching the clutch.

A part of the back surface of the outer frame 101 is open, and a controller box 113 incorporating a control board (not shown) is arranged in the open portion. On the back surface of the controller box 113, a back cover 114 is arranged so as to cover the opening portion of the outer frame 101. The control board controls the motor 121, the transmission mechanism 126, and the like to execute a series of washing operations.

(Lead)
FIG. 2 is a lower rear view of the washing machine in the first embodiment with the back cover removed, and FIG. 3 is a sectional view taken along the line AA in FIG.

As shown in FIGS. 2 and 3, the lead wire 127 drawn from the motor 121 is routed to the back surface of the lower frame body 103, and is drawn from the box opening 113a formed in the lower part of the controller box 113 to the controller box 113. It is inserted inside. The lead wire 127 electrically connects the control board and the motor 121 to supply electric power and transmit electric signals.

The lead wire 127 on the control board side is locked to the lower frame body side mounting portion 140, and the lower frame body side mounting portion 140 is arranged on the lower frame body 103 below the controller box 113. The lead wire 127 on the motor 121 side is locked to the water tank side mounting portion 131, and the water tank side mounting portion 131 is fixed to the lower part of the water tank 107. The lead wire 127 is locked between the water tank side mounting portion 131 and the lower frame body side mounting portion 140 so as to have a lead wire slack portion 127a which is a slack. Details of the lower frame body side mounting portion 140 and the water tank side mounting portion 131 will be described later.

(Aquarium side mounting part)
As shown in FIG. 3, the water tank side mounting portion 131 is formed in a plate shape by a flame-retardant member such as metal, and is configured as a separate component from the motor holding portion 120. The water tank side mounting portion 131 is screwed to the lower bottom portion of the water tank 107 by a water tank side mounting portion screw 133 in the vicinity of the controller box 113.

The water tank side mounting portion 131 is formed with water tank side mounting portion holes 131a at two locations, and the lead wires 127 are provided with two binding bands 141 so as to have substantially the same spacing as the two water tank side mounting portion holes. They are united in each. The binding band 141 is inserted into the water tank side mounting portion hole 131a in a state where the lead wire 127 is bound, and is locked to the back surface of the water tank side mounting portion 131.

(Lower frame side mounting part)
FIG. 4 is an external perspective view showing the circumference of the lower frame side mounting portion of the washing machine according to the first embodiment, and FIG. 5 is a vertical cross-sectional view showing the circumference of the lower frame side mounting portion of the washing machine.

The lower frame body side mounting portion 140 is placed on the upper surface of the pedestal 143 formed by extending upward from the lower frame body 103. The detailed structure of the lower frame body side mounting portion 140 will be described later. The inside of the pedestal 143 is formed in a cavity so as to have a substantially box shape, and the heat capacity is reduced by providing the cavity. Further, a pedestal opening 143a is formed on the back surface side of the pedestal 143.

Circular pedestal holes 143b are formed in two places on the upper surface of the pedestal 143, and pedestal ribs 143c are formed vertically inside the pedestal 143 so as to reinforce the strength of the pedestal 143.

The lower frame body side mounting portion 140 is formed in a substantially U shape by a flame-retardant member such as metal, and has a function of suppressing the spread of fire. The lower frame body side mounting portion 140 is formed by bending a plate made of a flame-retardant member, and can be manufactured at low cost. The lower frame body side mounting portion 140 has a locking surface 140a to which the lead wire 127 is locked, a shielding surface 140b provided so as to cover the upper side of the lead wire 127 and the water tank 107 side, and an opening 140c on the back side. And, including.

The locking surface 140a is provided with two locking surface holes 140f for locking the binding band 141 so as to face the pedestal hole 143b. The locking surface 140a is formed by bending the left and right ends so that the lower frame side mounting portion 140 is positioned when it is placed on the pedestal 143.

The lead wires 127 are bound by two binding bands 141 so as to have substantially the same spacing as the two locking surface holes 140f. The binding band 141 is inserted into the locking surface hole 140f and the pedestal hole 143b in a state where the lead wire 127 is bound, and is stopped by the inner upper surface of the pedestal 143.

At the time of assembly, the operator places the lower frame side mounting portion 140 on the upper surface of the pedestal 143, inserts the binding band 141 in which the lead wire 127 is bound, into the locking surface hole 140f and the pedestal hole 143b, and inserts the lead wire. The 127 is fixed to the locking surface 140a. As a result, the lower frame body side mounting portion 140 is sandwiched between the lead wire 127 and the pedestal 143 and locked with respect to the pedestal 143, so that mounting is easy. Further, since the lower frame body side mounting portion 140 has the opening 140c opened to the back side, it is easy for the operator to insert his / her hand from the back side.

Further, when removing the lead wire 127 from the lower frame side mounting portion 140, a hand is inserted through the pedestal opening 143a to unlock the binding band 141, and a hand is inserted through the opening 140c to insert the lead wire 127 and the binding band 141. Is taken out from the lower frame body side mounting portion 140. By opening the pedestal opening 143a and the opening 140c to the back side in this way, it is easy to insert a hand from the back side.

(Around the back cover)
FIG. 6 is a vertical cross-sectional view showing the periphery of the controller box of the washing machine according to the first embodiment.

As described above, the back cover 114 is attached to the back side of the outer frame 101 so as to cover the opening portion of the outer frame 101 and the controller box 113. The back cover 114 is formed so as to be inflated in the direction of arrow C, and is provided so as to be separated from the water tank side mounting portion 131. The lower portion of the back cover 114 is formed to have a length that does not substantially cover the lower frame 103 so that the appearance shape of the washing machine 100 becomes compact.

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

(Vibration of the water tank during washing operation)
The user opens the lid 104, loads the laundry into the washing / dehydrating tub 109 from the laundry loading port 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 steps such as a washing step, a rinsing step, a dehydration step, and the like. When the series of steps in the set course is completed, the washing operation is completed.

During the washing operation, the water tank 107 oscillatingly supported by the suspension vibrates with the operation of the washing / dehydrating tank 109 and the pulsator 110. Therefore, the lead wire 127 sandwiched between the water tank side mounting portions 131 vibrates greatly with the vibration of the water tank 107. On the other hand, since the outer frame 101 does not vibrate substantially, the distance between the water tank side mounting portion 131 and the lower frame body side mounting portion 140 varies greatly. By providing the lead wire slack portion 127a, it is possible to prevent the lead wire 127 from being broken due to a change in the distance between the water tank side mounting portion 131 and the lower frame body side mounting portion 140.

Further, a part of the vibration of the water tank 107 is transmitted to the lead wire 127 between the water tank side mounting portion 131 and the lower frame body side mounting portion 140. Therefore, in the lower frame body side mounting portion 140 attached to the lower frame body 103, stress is concentrated on the locked portion of the lead wire 127, and the lead wire 127 may be broken and ignite. In the present embodiment, the locking portion that may ignite is covered with the locking surface 140a and the shielding surface 140b formed of metal, and the controller box 113 and the water tank 107, which are often composed of resin, spread the fire. Is being suppressed.

(Action, etc.)
As described above, in the present embodiment, the washing machine 100 includes an outer frame 101, an upper frame 102, a lower frame 103, a water tank 107 oscillatingly supported inside the outer frame 101, and a water tank. A washing / dehydrating tub 109 rotatably provided inside the 107, a motor 121 arranged at the bottom of the water tub 107 to rotationally drive the washing / dehydrating tub 109, and a back side of the outer frame 101. It includes a control board that controls the motor 121, a lead wire 127 that connects the motor 121 and the control board, and a lower frame body side mounting portion 140 that is arranged on the lower frame body 103 and fixes the lead wire 127. The lower frame body side mounting portion 140 is formed in a substantially U shape by a flame-retardant member, and the lead wire 127 is fixed inside the substantially U shape and is arranged so as to open on the back side of the outer frame 101.

As a result, the fixed portion of the lead wire 127 in which stress is likely to be concentrated can be shielded by the flame-retardant member, and the fixed portion is exposed to the back side from the opening. Therefore, it is possible to suppress the occurrence of a fire due to the disconnection of the lead wire 127, and it is easy to attach and detach the lead wire 127.

As in the present embodiment, the lower frame body side mounting portion 140 has a locking surface 140a for fixing the lead wire 127 inside a substantially U-shape and a controller box for accommodating the control board at a position where the lead wire 127 is fixed. It may be formed in a substantially U shape by the shielding surface 140b that shields the directions of 113 and the water tank 107.

As a result, the fixed portion of the lead wire 127 in which stress tends to concentrate can be shielded by the flame-retardant member from the controller box 113 and the water tank 107, which are often made of resin. Therefore, it is possible to prevent the controller box 113 and the water tank 107 from spreading due to the disconnection of the lead wire 127, so that the occurrence of a fire can be prevented.

As in the present embodiment, the housing includes an outer frame 101 containing the water tank 107, an outer frame 101 containing the water tank, and a lower frame 103 fixed to the lower part of the outer frame 101. The frame body side mounting portion 140 may be fixed to the upper surface of the pedestal 143 formed on the upper portion of the lower frame body 103.

As a result, the lower frame body side mounting portion 140 can be placed on the pedestal 143 and then fixed to the lower frame body 103. Therefore, workability when mounting the lower frame body side mounting portion 140 is high.

As in the present embodiment, the housing includes a back cover 114 that is attached so as to cover the opening formed on the back side of the outer frame 101, and the back cover 114 is separated from the lower frame side attachment portion 140. In addition, the back cover bulging portion 114a formed by bulging on the back side may be provided.

As a result, even if the back cover 114 is made of resin, it is possible to prevent the back cover 114 from spreading due to the disconnection of the lead wire 127.

As in the present embodiment, the lower frame body side mounting portion 140 has a locking surface hole 140f for locking the binding band 141 that sandwiches the lead wire 127, and the binding band 141 is locked in the locking surface hole 140f. May be fixed to the lower frame body 103.

As a result, by inserting the binding band 141 into the locking surface hole 140f and the pedestal hole 143b, the lower frame body side mounting portion 140 is sandwiched between the lead wire 127 and the pedestal 143, and the lower frame body side mounting portion 140 becomes the pedestal 143. Locked against. Therefore, the lower frame body side mounting portion 140 can be easily mounted on the pedestal 143.

(Embodiment 2)
The washing machine 200 according to the second embodiment is different from the washing machine 100 according to the first embodiment in that the lower frame side mounting portion is screwed to the pedestal. Therefore, the washing machine 200 includes a lower frame body side mounting portion 240 and a pedestal 243 instead of the lower frame body side mounting portion 140.

(Lower frame side mounting part)
FIG. 7 is an external perspective view showing the periphery of the lower frame side mounting portion of the washing machine according to the second embodiment.

The lower frame body side mounting portion 240 is mounted on the upper surface of the pedestal formed on the lower frame body 103. Circular pedestal holes 243b are formed in two places on the upper surface of the pedestal 243, and pedestal ribs 243c are formed above and below the pedestal 243 so as to reinforce the strength of the pedestal 243. Further, pedestal screw fastening holes that open on the back side are formed on the left and right sides of the pedestal 243, respectively.

The lower frame body side mounting portion 240 is screwed to the locking surface 240a, the shielding surface 240b provided so as to cover the upper side of the lead wire 127 and the water tank 107 side, the opening 240c on the back side, and the pedestal 243. Includes a screw fastening portion 240d.

The locking surface 240a is provided with two locking surface holes 240f for locking the binding band 141 so as to face the pedestal hole 243b. The screw fastening portion 240d is formed to hang down from the back end portion of the locking surface 240a, and the locking surface hole 240f is formed at a position facing the pedestal screw fastening hole 243d.

At the time of assembly, the operator arranges the lower frame body side mounting portion 240 on the upper surface of the pedestal 243, and screws the lower frame body side mounting portion screw 242 at the screw fastening portion 240d. Next, the binding band 141 in which the lead wire 127 is bound is inserted into the locking surface hole 240f and the pedestal hole 243b, and the lead wire 127 is fixed to the locking surface 240a. In the present embodiment, since the binding band 141 is inserted after the lower frame side mounting portion 240 is screwed, the operator does not have to work while holding the lower frame side mounting portion 240 by hand.

(Action, etc.)
As described above, in the present embodiment, the washing machine 100 includes an outer frame 101, an upper frame 102, a lower frame 103, a water tank 107 oscillatingly supported inside the outer frame 101, and a water tank. A washing / dehydrating tub 109 rotatably provided inside the 107, a motor 121 arranged at the lower part of the water tub 107 to rotationally drive the washing / dehydrating tub 109, and a back side of the outer frame 101. A control board that controls the motor 121, a lead wire 127 that connects the motor 121 and the control board, and a lower frame body side mounting portion 24 that is arranged on the lower frame body 103 and fixes the lead wire 127.
It includes 0 and. The lower frame body side mounting portion 240 is formed to hang down from the locking surface 240a for fixing the lead wire 127 inside the substantially U-shape and the back end portion of the locking surface 240a, and is screwed to the lower frame body 103. , Has a screw fastening portion 240d.

As a result, since the screw fastening portion 240d is formed on the back side, screwing can be performed from the back side. Therefore, the lower frame body side mounting portion 240 is easy to mount.

(Other embodiments)
As described above, Embodiments 1 and 2 have been described as examples of the techniques disclosed in this application. However, the techniques in this disclosure are not limited to this.

Therefore, other embodiments will be illustrated below.

In the first embodiment, the 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 the vertical washing machine as long as it is provided with a water tank and a control device that are swingably supported in the housing. The washing machine may be a two-tank washing machine.

In the first and second embodiments, the lower frame body side mounting portion 140 and the lower frame body side mounting portion 240 have been described as an example of the substantially U-shaped housing side mounting portion. The substantially U-shape is not limited to the shape of the lower frame side mounting portion 140, and may be a U-shape, a U-shape, a semicircular shape, or a shape in which the ends thereof are bent. ..

In the first and second embodiments, a metal has been described as an example of the flame-retardant member. The flame-retardant member is not limited to metal, and ceramic or flame-retardant resin may be used.

In the first and second embodiments, as an example of the fixed surface on which the lead wire is fixed, the locking surface 140a mounted on the pedestal 143 and the locking surface 240a mounted on the pedestal 243 have been described. .. The fixed surface is not limited to the surface mounted on the pedestal. For example, it may be a surface on the water tank side or a surface on the controller box side. However, by setting the surface mounted on the pedestal as a fixed surface, it is possible to remove the locking of the binding band by inserting a hand through the pedestal opening as in the first and second embodiments.

The present disclosure is applicable to washing machines in which a motor and a control device are electrically connected by lead wires. Specifically, the present disclosure is applicable to vertical washing machines, drum-type washing machines, two-tank washing machines, and the like.

100 Washing machine 101 Outer frame (housing)
102 Upper frame (housing)
103 Lower frame (housing)
104 Lid 105 Laundry inlet 106 Operation display 107 Water tank 109 Washing and dehydration tank 110 Parsator 111 Balancer 112 Dehydration hole 113 Controller box (control device)
113a Box opening 114 Back cover 114a Back cover bulge 120 Motor holding part 121 Motor 122 Belt 123 Motor side pulley 124 Mechanical side pulley 125 Rotating shaft 126 Transmission mechanism 127 Lead wire 127a Lead wire loose part 131 Water tank side mounting part 133 Water tank Side mounting part screw 140 Lower frame side mounting part (housing side mounting part)
140a Locking surface (fixed surface)
140b Shielding surface 140c Opening 140e Locking surface Bending part 140f Locking surface hole (locking part)
141 Cable ties (holding means)
143 Pedestal 143a Pedestal opening 143b Pedestal hole 143c Pedestal rib 200 Washing machine 240 Lower frame side mounting part (housing side mounting part)
240a Locking surface (fixed surface)
240b Shielding surface 240c Opening 240d Screw fastening part 240f Locking surface hole (locking part)
242 Lower frame side mounting screw 243 Pedestal 243b Pedestal hole 243c Pedestal rib 243d Pedestal screw fastening hole

Claims (5)

A housing, a water tank oscillatingly supported inside the housing, a washing / dehydrating tank rotatably provided inside the water tank, and a washing / dehydrating tank disposed at the bottom of the water tank. A motor that rotationally drives the motor, a control device that is arranged on the back side of the housing and controls the motor, a lead wire that connects the motor and the control device, and a lead wire that is arranged on the housing and described above. It is equipped with a housing-side mounting part for fixing the lead wire.
The housing-side mounting portion is formed in a substantially U-shape by a flame-retardant member, and the lead wire is fixed inside the substantially U-shape and arranged so as to open on the back side of the housing. .. The housing-side mounting portion is substantially formed by a fixing surface for fixing the lead wire inside the substantially U-shape and a shielding surface for shielding the orientation of the control device and the water tank at a position where the lead wire is fixed. The washing machine according to claim 1, which is formed in a U shape. The housing includes an outer frame containing the water tank and a lower frame body fixed to the lower portion of the outer frame, and the housing side mounting portion is a pedestal formed on the upper portion of the lower frame body. The washing machine according to claim 1, which is fixed to the upper surface. The housing includes a back cover that is attached so as to cover an opening formed on the back side of the outer frame, and the back cover is formed so as to bulge toward the back side so as to be separated from the housing side mounting portion. The washing machine according to claim 3, further comprising a back cover bulge. The housing-side mounting portion has a locking portion for locking the sandwiching means for sandwiching the lead wire, and is fixed to the housing by locking the sandwiching means in the locking portion. The washing machine according to 1.

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