JP2872242B2 - Dehydration washing machine drive - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a dehydration washing machine, and more particularly to a support base structure of a drive device suitable for reducing vibration and preventing fire spread. [Prior Art] The conventional support base structure of a driving device is disclosed in
As described in JP-A-91, the shape was substantially rectangular and had a flange portion in the longitudinal direction. The end portions in the longitudinal direction remained in a bent state, and the flange portions on both sides were not connected and were independent. Furthermore, the mounting surface of the motor and the clutch and the connecting surface of the outer tub were the same. [Problems to be Solved by the Invention] In the above prior art, the rigidity in the longitudinal direction of the support base is high due to the presence of the flange portion, but the short side direction has a substantially concave shape. It has a vibration mode in which the mouth opens, and no consideration is given to rigidity. Furthermore, the longitudinal end has no rising shape, and when the motor burns out, there is a risk of spreading the fire to the outer tank above the support base. In addition, the flange portion of the support base is not only a mounting surface for the motor and the like, but also a coupling surface with the outer tub, so that the vibration generated from the motor and the like is easily transmitted to the outer tub. An object of the present invention is to solve the above-described problems, to have high rigidity,
The purpose is to provide a support base that can prevent the spread of fire. [Means for Solving the Problems] A washing and dewatering tub having a rotating blade at a bottom portion, an outer tub that rotatably houses the washing and dewatering tub, and a rotating wing attached to a lower surface of the outer tub and And a support base for supporting a driving device that rotationally drives the washing and dewatering tub, wherein the driving device includes a clutch device that switches between a washing operation and a dehydrating operation, a driving motor, and electric components such as a condenser. In the driving device for a washing machine, the support base includes a concave storage recess in which the clutch device is disposed in the center, the drive motor and the electric components are distributed to the left and right, and an outer side of an opening side end of the storage recess. A support edge portion formed so as to extend to the outside and having a substantially rectangular outer periphery, and a rising edge which is bent from both ends corresponding to the long sides of the support edge portion toward the bottom side of the storage recess. And a mounting flange that bends outward from the ends of the rising portions and is substantially parallel to the support edge, and the mounting flange is screwed to the outer tank with the outer tub. It is characterized by being attached. [Operation] The support base has a box-like shape with a wall in which the clutch device has a concave storage recess in which the drive motor and the electric components are arranged in a distributed manner in the center. , The rigidity is remarkably increased and the vibration is reduced as compared with a simple flat plate shape.
In addition, even when the drive motor overheats and burns, the fire is prevented from spreading to the outer tub because of the surrounding wall. Embodiment An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic diagram for explaining the structure of the entire washing machine.
Is formed by pressing steel plate on the outer frame.
have b. Reference numeral 2 denotes a top cover, which surrounds the upper surface of the outer frame 1 and has a lid 3 and a control unit 20. Reference numeral 4 denotes an outer tub for storing washing water. Reference numeral 4a denotes an air reservoir connected to the air hose 5 and the pressure switch 6, which is configured such that water supplied from the water supply device 24 by opening the water supply valve 23 in the tank is replaced with a water level for control. Reference numeral 4b denotes a suspension rod support, which is used to penetrate the suspension rod 7 and hold the spring 9 so as to hold the spring support 10 and the hook 7a.
In the upper part, the hanging rod holder 8 for rotating and locking is positioned in the hanging rod receiver 1a. Numeral 11 denotes a washing tub having a small hole and a wavy wall on the outer periphery thereof. The washing tub 11 is rotated by the rotating motion of the blade 13, and the washing tub 11 itself rotates to perform dehydration of the laundry by centrifugal force. Reference numeral 14 denotes a support base, which holds a drive unit 18 having a main motor 15, a reduction gear, a brake, a clutch unit 18d, and the like.
It is locked to. 15a is a motor shaft, pulley 1
The rotation of the motor is transmitted to the pulley 18c on the drive unit 18 side by the engagement with the belt 6 and the belt 17. 18a is a blade shaft protruding from the drive unit, and 18b is a washing tub shaft. Reference numeral 19 denotes a seal portion, reference numeral 21 denotes a drain hole, and a portion for draining by a drain valve 21 and a drain hose 22. 25 is a water supply hose. The operation in such a configuration will be described. The water supply valve 23 is opened and water is supplied by a key input signal to the control unit, and the water supply amount is determined by the pressure switch 6 taking this water supply amount as a water level. When the motor 15 rotates (reversed), only the blade rotation shaft 18a is driven by the action of the clutch unit 18d to perform washing. Next, the drain valve 21 is opened, drained, and by switching the clutch part 18d, this time, the washing tub shaft 18b is driven,
The washing tub 11 is rotated to perform dehydration. Such an operation is performed. Details regarding the clutch brake will be described with reference to FIGS. The upper case 101 has an upper bearing 103 storage part and 101a, and the upper bearing has a washing tub shaft 107.
And the upper metal 110 is interposed between the blade and the blade shaft 109. 101b is a connection part via a seal between the outer tank,
101c is a screw hole, 101d is a recess, 101e is a hole, the lower case 102
And a pin 104 between them for engagement. 105 is a coil spring, which stops the clockwise rotation of the washing tub,
The other side is a sliding spring, which has a hook 105b at the tip of the arm 105a and is engaged with the pin 104. 1
06 is a retaining ring. 105c is a winding end portion, 108 is a gear drum, in which gear 109a, two-stage gear 111, lower shaft gear 11
108b, which has 3a, has a pressed end at the flange end and faces outward to have a draining effect. Reference numeral 112 denotes a gear box lower shaft having an engagement portion 112a of the lower bearing 119 and a lower extension end having a spline 112b. The lower shaft 112 penetrates the lower shaft 113 inside. 113b is a corner portion, and 113c is an end screw portion. Reference numeral 102 denotes a lower case that houses the gear drum 108, has a lower bearing 119, and is fixed to the upper case by screwing. 102b
Is a screw hole. Reference numeral 116 denotes a brake plate having a spline 116B which is loosely engaged with a central portion, and a brake lining 117 integrally formed on the outer periphery. Reference numeral 117a denotes a grease pool.
The brake plate is positioned so that the lining 117 abuts on the lower surface of the lower case 102 and is held by the backing plate 118. Nipping is performed with four special screws 124 having a spring 125, and a brake torque is obtained by the load of the spring 125. 124a is a screw case and lower case
The screw hole 102b of 102 is engaged, and 124b is a screw head. 118c is a through hole of the special screw 124, and 118b and 118a are bent portions for preventing warpage. Reference numeral 118d denotes a lower arm, which has a small solenoid 128 to be locked, and 118f denotes a solenoid plunger 128a.
The through hole 118e is a set screw hole for a fixing screw. 128b is a coil part, and 128c is a terminal part. Reference numeral 120 denotes an inner boss (1), which is a metal that fits into the lower shaft 112 of the car box through a core hole 120b, and has a spline 120a that engages with a spline 116a of the brake plate 116 on the outside. The inner boss (1)
The inner boss (2) 129 having the same diameter as the spline 112b
Has a spline 129c sized to engage with it and has an inverted U-shaped groove 112a. A clutch spring 130 is engaged in this groove 129a, a clutch spring 127 for a brake is provided on the outer periphery, and a tightening margin of about two turns is provided at a lower portion. While engaging with the hook part 129b
Then, the bent portion 127b is hooked and engaged with the inner boss (1).
Is initially positioned as a play state with no interference. The upper bent portion 127a is the coil spring case 15.
By engaging the notch 150a at the upper end of the 0 and turning the coil spring case 150, the clutch spring 127 for brake securely connects the inner boss (1) and the inner boss (2). The bent portion 130a at the lower portion of the clutch spring 130 projects from the opening 150e on the lower surface of the coil spring case 150, and the pulley boss 134 and the inner boss 134 are rotated by the rotation of the coil spring case 150 to abut the right wall stopper 150g of the opening. It is provided to release the connection of the boss (2). 134a is a square hole which engages with the corner 113b. Reference numeral 122 denotes a coil case lid, which is integrated with the coil spring case 150 by a rotation stopper 122d, and has an extension 122b.
The inner recess 122c is engaged and locked by the projection 150d. 122a
Is a window of the bent portion 127a. 150c is a vertical stopper,
The operation band 123 is engaged with this inside. The operation band 123 is engaged with a close margin and has a certain frictional force. By locking or removing the operation portion 123a to make it free, the inner clutch clutch spring 127, the clutch spring The connection and disengagement of 130 are performed with a frictional force slightly stronger than the operating force of each clutch spring,
There is no problem even if there is a so-called sliding action. The plunger 128a is brought into contact with or released from the operation section 123a to perform a clutch operation. 132 is a pulley with a square hole 132a
Are engaged with the corner 113b, and the screw 1 is inserted through the washer 135.
It is fixed by a nut 133 having 33a. With the above configuration, when no electric power is applied to the small solenoid 128 and the plunger 128a remains protruding, the blade 13
(Including inversion, so-called alternate rotation). At the time of spin-drying, that is, rotation of the washing tub 11, power is supplied to the small solenoid 128, the plunger 128a is sucked, and the engagement with the operation unit 123a is released. More specifically, when the blades 13 rotate counterclockwise and perform washing, the washing tub 11 must not be rotated. With the rotation of the blades 13, the movement of rubbing the laundry with the washing tub 11 is performed, and at this time, the power is not applied to the small solenoid 128, so that the plunger 128a,
The operation part 123a abuts, and the frictional force with the operation band 123 attached to the coil spring case 150 with the interference allows the rotation of the clutch spring 130 at the same time as the coil spring case 150. 130a hits the right wall stopper 150g and is wound around the pulley boss 134 with an interference, but opens here to release the pulley boss 134. Therefore, the rotational force from the pulley boss 132 is transmitted to only the lower shaft 113 via the pulley boss 134, and rotates the gear in the gear drum 108 to rotate the blade shaft 109. The coil spring 105 serving as a reverse rotation preventing spring stops the washing tub 11 against this rotation.
The gear drum 108 is press-fitted integrally with the washing tub shaft 107 and wound around the coil spring winding portion 108a in a left-handed manner. Since the coil spring 105 is mounted with an interference, the coil spring 105 slips and turns when turned clockwise. In the case of counterclockwise rotation, a more wrapping force is generated due to the interference, a tensile force is generated in the arm 105a, and the washing tub 11 does not rotate to prevent
Only 13 turns. Next, when it turns around, so-called opposite,
Since the above-described coil spring 105 idles, the gear drum 108 and the lower shaft 112 also try to rotate. However, since the lower spline 112b and the inner diameter spline 129c of the inner boss (2) 129 are engaged, and the lower bent portion 127b of the clutch spring 127 for the brake is also engaged with the concave portion 129b, the brake The inner clutch boss (2) 129 and the inner boss (1) 120 are connected to each other. Since the spline 120a of the inner boss (1) and the spline 116a of the brake plate 116 are also engaged, the rotational force passes through them and reaches the brake lining 117, and the rotation is prevented by the brake force. . Next, the rotation of the dehydration will be described.The pulley 132 rotates in the counterclockwise direction and rotates the washing tub 11 is called dehydration, and at this time, the small solenoid 128 is energized and the plunger 128a is retracted. In the state
The operation portion 123a of the operation band 123 is disengaged, the coil spring case 150 is in a free state, and the clutch spring 130
By being wound around the pulley boss 134, the rotating force causes the washing tub 11 to rotate at high speed in one direction through the inner boss (2) 129, the gear box lower shaft 112, and the gear drum 108. The support base 14 has a structure as shown in FIGS. In the center, a clutch device is formed, a driving motor 15 is formed on the right side, and a concave storage recess 153 is formed on the left side in which a condenser 157 of an electric component is disposed. The storage recess 153 has a support edge 152 on the opening side opposite to the bottom side. The support edge 152 is formed in a flat shape so as to extend outside the opening-side end, and has a rectangular outer periphery. Since the storage recess 153 is formed in a box shape around the wall, the support base 14 has a box-shaped configuration. The rising portions 152a are provided at both ends corresponding to the long sides of the supporting edge 152. The rising portion 152a is bent from both ends of the support edge 152 so as to face the bottom side of the storage recess 153, and is formed to be shorter than the depth of the storage recess 153. A mounting flange 151 is provided at the tip of the rising portion 152a. The mounting flange 151 is bent outward from the tip of the rising portion and is formed so as to be parallel to the supporting edge 152. The mounting flange portion 151 is
Since it is provided at the tip of the rising portion 152a lower than the depth of the storage recess 153, it is not flush with the bottom of the storage recess 153, but at a position lower than the bottom. As described above, the support base 14 has a box-shaped configuration with the wall surrounding the storage recess 153, so that the support edge 14
The rigidity of the support base 14 is extremely strong as compared with the flat shape. For this reason, vibration of the outer tub 4 during dehydration or the like is reduced. In addition to this, even when the motor 15 overheats and burns, the flame is caught by the surrounding wall and the spread of fire to the outer tub 4 is suppressed. Further, since the mounting flange portion 151 having a step is provided outside the supporting edge portion 152 via the rising portion 152a, the rigidity is further increased, and the strength is particularly strong against torsion. Further, the mounting flange portion 151 is fixed to the outer tank 4 with the screw 158, and the motor 5 is fixed to the supporting edge portion 152. The mounting flange portion 151 and the supporting edge portion 152 have a step through the rising portion 152a. . Therefore, the vibration of the motor 15 is less likely to be transmitted to the outer tub 4 and the noise can be reduced as compared with the case where the mounting flange 151 and the supporting edge 152 are on the same plane. The bottom of the lower base 14 where the motor 15 is
And a motor retainer 154 made of a flame-retardant resin having a slightly larger margin than the space of the lower base 14. When the belt 17 of the motor 15 rotates, the motor presser 154
The motor 15 causes a swinging motion in the belt tension direction due to the deviation of the sheave surface of 6, the variation of the belt width, etc.
This is to prevent the vibration from increasing. The blade 13 includes four blades as shown in FIGS. 9 and 10, and includes two pairs of blades a164 and b165. Feather a164 and feather b1
65 has substantially the same shape, but the blade b165 side is slightly smaller. Of the blades a164, b165 both extending in the radial direction, the protrusion a160 on the outer peripheral side is higher than the concave portion 161 on the cylinder 162 side,
By making the base 159 a dish shape with a recess inside,
This facilitates the replacement of the cloth, and can also suppress damage to the cloth and input. Further, a cap 163 formed of a transparent synthetic resin is attached to the tip of the cylinder 162 so as to be freely attachable and detachable. This makes it possible not only to check the collection condition of a lint filter (not shown) built in the cylinder but also to make the blade height appear low by making the cap 163 transparent. [Effects of the Invention] As described above, the present invention is a washing and dewatering tub having a rotating blade at the bottom, an outer tub that rotatably houses the washing and dewatering tub, and attached to the lower surface of the outer tub, And a support base that supports a driving device that rotationally drives the rotating wings and the washing and dewatering tub, wherein the driving device includes a clutch device that switches between a washing operation and a dehydration operation, a driving motor, and electric components such as a condenser In the drive device for a dehydrating washing machine having the above, the support base has a concave storage recess in which the clutch device is disposed in the center and the drive motor and the electric components are distributed to the left and right, and an opening side of the storage recess. A flat and substantially rectangular outer peripheral edge formed so as to extend outside the end portion, and folded so as to face the bottom side of the storage recess from both ends corresponding to the long sides of the support edge portion. A rising flange that bends, and a mounting flange that bends outward from the ends of the both rising portions so as to be substantially parallel to the supporting edge, and that the mounting flange is screwed to the outer tank. A driving device for a dehydrating washing machine, wherein the driving device is mounted on the device. According to this configuration, there are the following advantages. (1). The support base has a concave storage recess in which the clutch device is disposed in the center, and the drive motor and the electric components are separately arranged on the left and right.The support base has a box-like shape with a wall portion surrounding the storage recess. The rigidity is significantly increased and the vibration is reduced as compared with a simple flat plate shape. In addition, even when the drive motor overheats and burns, the fire is prevented from spreading to the outer tub because of the surrounding wall. (2). Since the mounting flange portion is provided on the outer side of the support edge portion via the rising portion, the rigidity is increased and the torsion resistance is increased. Further, the vibration of the driving motor is hardly transmitted to the outer tank, and the noise is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 to FIG. 5 are essential parts of a clutch, FIG. 6 is a perspective view from below, FIG.
FIG. 8 is a detailed view of the vicinity of the motor mounting portion, FIG. 9 is a plan view of the support base, and FIG. 10 is a perspective view of the support base. 14 ... lower base, 151 ... mounting flange, 152 ... support edge,
152a: rising portion, 153: storage recess.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tamotsu Kamori 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Plant of Hitachi, Ltd. (72) Inventor Masayoshi Hirayama 1-1-1, Higashitaga-machi, Hitachi City, Ibaraki Prefecture No. 1 Inside the Taga Plant of Hitachi, Ltd. (56) References JP-A-59-57698 (JP, A) JP-A-56-176691 (JP, U) JP-A-51-17372 (JP, U) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) D06F 37/40

Claims (1)

(57) [Claims] A washing and dewatering tub having a rotating blade at the bottom, an outer tub rotatably disposed inside the washing and dewatering tub, and a drive mounted on the lower surface of the outer tub and for rotating the rotating wing and the washing and dewatering tub. A driving base for supporting the device, wherein the driving device is a driving device for a dehydration washing machine having a clutch device for switching between a washing operation and a dehydration operation, a driving motor, and electric components such as a condenser. A flat recess formed in the center, wherein the clutch device is formed in such a manner that the driving motor and the electric components are distributed to the left and right, and a recessed recessed portion is provided, and the clutch device extends outward from an opening-side end of the recessed portion. The outer periphery is a substantially rectangular supporting edge, a rising portion that bends from both ends corresponding to the long sides of the supporting edge toward the bottom side of the storage recess, and a tip of the both rising portions. A mounting flange that bends outwardly and so as to be substantially parallel to the support edge, wherein the mounting flange is attached to the outer tub with screws or the like. Drive.