JP4044602B1 - Method for assembling washing machine motor and washing machine motor - Google Patents

Abstract

A motor assembly including attachment to a washing machine can be easily performed with good workability without requiring skill.
A washing machine main body 1 includes a motor 5 having a stator 5a attached to the washing machine body 1 and a rotor 5b having a magnet 22 attached to a driving rotary shaft 4a bearing on the washing machine body 1. The stator 5a that is not attached to the washing machine body 1 and the rotor 5b that is magnetized with the magnet 22 and not attached to the drive rotating shaft 4a are assembled for assembly with attachment to the washing machine body 1. After the first step, the second step of attaching the rotor 5b to the driving rotary shaft 4a after the first step, and the stator 5a to the washing machine body 1 after the second step. The above object is achieved by having a third step of attaching.
[Selection] Figure 7

Description

The present invention relates to a method for assembling a motor of a washing machine including a stator attached to a washing machine and a rotor having a magnet attached to a driving shaft bearing on the washing machine, and a motor of a washing machine suitable for the method. Is.

  Examples of the washing machine to which the motor is attached include a drum type washing machine as shown in FIGS. In the washing machine main body 51, a rotating drum 54 having a large number of holes 53 is disposed in a water tank 52 elastically supported by a suspension structure. The rotating drum 54 is rotationally driven by a motor 55, and the washing machine By opening a door 56 that can be opened and closed on the front side of the main body 51, the laundry can be taken in and out of the rotary drum 54 through the front opening of the water tank 52 and the front opening of the rotary drum 54. Further, when the door 56 is opened and the laundry is put into the rotating drum 54 and the operation is started with the addition of the detergent, the water tank 52 is supplied with water from the water supply system 57, and the supplied water passes through the holes 53. A required amount of water is also supplied into the rotating drum 54. When the rotating drum 54 is driven to rotate at a predetermined rotational speed by the motor 55, the laundry stored in the rotating drum 54 is hooked on the stirring protrusion 58 provided on the inner peripheral surface of the rotating drum 54 and lifted in the rotating direction. When the laundry is dropped from an appropriate height, washing is performed by applying a washing action to the laundry. After this washing process, the dirty washing water is drained by the drainage system 59, and the rinsing process is performed using newly supplied water. When the rinsing process is completed, the rotating drum 54 is rotated at a high speed to perform the dewatering process. Is done. These steps are automatically executed based on a predetermined control procedure.

  By the way, conventionally, a first motor capable of forward / reverse rotation for executing a washing process and an rinsing process by rotating the rotating drum forward / reversely at a first rotational speed and a dehydrating process at a second rotational speed are performed. A second motor that continuously rotates the drum in one direction at a second speed is attached to the rear surface of the water tank, and a drive system that transmits rotation to the rotating drum by a V-belt (see, for example, Patent Document 1) or a water tank. A drive system that directly transmits the rotation of the motor attached to the back surface of the rotating drum to the rotating shaft of the rotating drum (see, for example, Patent Document 2), and an inner rotor in which a motor attached to the back surface of the water tank is disposed on the inner periphery of the stator There is a method of driving a rotating drum by a motor of a type (for example, see Patent Document 3) or an outer rotor type motor (for example, see Patent Document 4) in which a rotor is arranged on the outer periphery of a stator.

  9 shows a state in which the inner rotor type motor 55 of the conventional drum type washing machine is used, and FIG. 10 shows a state in which the outer rotor type motor 55 of the conventional drum type washing machine is used. In any case, the motor 55 has the stator 60 attached to the outer bottom surface that is the back surface of the water tank 52, and the rotor 61 is attached to the rotating shaft 62 of the rotating drum 54.

  For example, Patent Document 3 discloses a technique for attaching the stator 60 to the outer bottom surface of the water tank 52. As shown in FIG. 11, the stator 60 and the rotor 61 are molded, and the attachment legs 63 formed on the mold of the stator 60 are screwed. And bolts 64 are attached.

  However, the present invention is not limited to this. In order to use the motor 55 for driving the washing machine, the stator 60 is attached to some fixed portion of the washing machine, not limited to the water tank 52, and the rotor 61 is driven by the driving. It is attached to be connected to various shafts.

  In any case, as shown in FIGS. 9 and 10, the motor 55 attaches the stator 60 to a fixed part of the washing machine such as the back of the water tank 52, and directly attaches the rotor 61 to the rotating shaft 62 protruding from the fixed part. As a result, the stator 60 and the rotor 61 are assembled.

The assembly accompanying the attachment to the washing machine requires securing a uniform gap between the stator 60 and the rotor 61, and a locking engagement between the rotor 61 and the rotating shaft 62 by a serration or key. Conventionally, the stator 60 is attached prior to the washing machine, and the magnetized rotor 61 is used as a means for preventing rotation between the rotor 61 and the rotary shaft 62 while ensuring a gap between the stator 61 and the already-attached stator 60. The rotor 61 is fitted on the rotary shaft 62 by aligning the positions.
Japanese Patent Laid-Open No. 10-263271 JP 2006-43105 A JP 2005-168116 A JP 2004-216166 A

  However, the stator 60 and the rotor 61 after magnetization are fitted together with a gap between them secured, and the position of the rotation preventing means with respect to the rotating shaft 62 is adjusted when the stator 60 and the rotor 60 are offset. Although it is necessary to overcome the force to be magnetically attracted, the work is difficult. However, as in the conventional case, the work for fitting the rotor 61 to the stator 60 and the detent means for the rotor 61 and the rotating shaft 62 are provided. If the operation of fitting the rotor 61 to the rotating shaft 62 while performing the alignment is performed at the same time, the assembling cost is high because the assemblability is inferior and skill is required for the operation.

An object of the present invention is to provide a method of assembling a motor for a washing machine that can easily assemble a motor including attachment to a washing machine without requiring skill and good workability, and a motor for a washing machine suitable for the method.

In order to achieve the above object, a method of assembling a motor for a washing machine according to the present invention includes a washing machine body, a water tank elastically supported in the washing machine body, and a plurality of holes formed in the water tank. And a rotating shaft having one end attached to the back surface of the rotating drum and having a serration portion at the other end, and a bearing portion into which a bearing attached to the back surface of the water tank and bearings the rotating shaft is press-fitted. A stator having a mounting portion for attaching the stator mounting portion to the stator mounting portion formed by winding a winding around a core having teeth extending in the radial direction and molding it with a resin material ; It said forming a serration portion that engages with the serration portion of the rotary shaft and the metal boss, the core corresponding magnet and its provided a corresponding position of the winding Has the boss, the washing machine having a rotor which is to be attached to the rotary shaft after the magnets and core engaged with serrated portion of the molded integrally the boss of a resin material to the serration portion of the rotary shaft A method for assembling a motor, wherein the stator that is not attached to the stator attachment portion and the rotor that is magnetized and not attached to the serration portion of the rotating shaft are magnetically attracted. a first step of combining by, after this first step, one of the stator and rotor combined by the magnetic attraction, the serrated portion of the rotor, which is bearing on the stator mounting portion through the bearing a second step of Ru engaged with the serration portion of the rotary shaft, after this second step, set by the magnetic attraction Among the stator and rotor I have been, it is characterized by having a third step of attaching to the stator mounting portion mounting portion of the stator in fastening by bolts.

According to this feature, the work fitted by magnetic attraction between the stator and magnetized already rotor, a work fitted involving position alignment for engaging the serrated portion of the rotor to the serration portion of the rotary shaft Can be carried out independently in different processes, so they do not interfere with each other's work. Therefore, the stator and the rotor can be fitted together in a free state where they are not attached to each other, and it is not necessary to secure a uniform gap between them at this stage, which is a simple operation. Further, mating for attachment to the rotational axis of the rotor is also in a stable mating state due to the one-sided magnetic attraction one of the stator and the rotor, yet done in a free state not attached to the other, the serration portion This is a simple task with alignment. At this stage, whether or not the attachment of the rotor to the rotating shaft is completed, the stator can be attached to the washing machine alone, and in this attachment, the stator is magnetically attracted to the rotor between the stator and the rotor. It is necessary to overcome the force and secure a uniform gap, but it is easy to position by using mechanical force at a predetermined position determined from the unique positional relationship between the rotating shaft and the stator mounting part. It becomes work. Completion of attachment of the rotor to the rotating shaft can also be performed after attachment of the stator to the washing machine.

Furthermore, the set of convex or stator-side positioning means of the concave der Ru annular and washing machine side positioning means are fitted to each other in the stator and before kiss stator mounting portion only in the third step, the stator side Since the positioning means is fitted to the washing machine side positioning means, in the work of fitting the rotor to the rotating shaft with the positioning of the serration portion , the stator is fitted from the initial stage of fitting the rotor to the rotating shaft. The stator side positioning means is changed to the washing machine side positioning means by utilizing the position restriction based on the rotation axis reference together with the rotor and approaching the stator mounting portion of the washing machine, that is, approaching the mounting position. to continue fitted, it is determined stator from unambiguous positional relationship between the rotary shaft and a stator mounting portion Since positioning in place, it can be provided to automatically ensure proper gap relative to the rotor which is positioned by rotating shaft mounting the stator. For this reason, the stator-side positioning means and the washing machine-side positioning means need only correct the amount of deviation generated by shifting both of them in an appropriate gap between the stator and the rotor, and the necessary correction amount is very small.

A washing machine body, a water tank elastically supported in the washing machine body, a rotating drum formed with a plurality of holes and disposed in the water tank, and one end attached to the back surface of the rotating drum and serrated on the other end Winding windings around a rotating shaft having a portion, a stator mounting portion integrally formed with a bearing portion in which a bearing attached to the back surface of the water tank and bearing the rotating shaft is press-fitted, and a core having teeth extending in the radial direction A metal boss formed with a serration portion that engages with the serration portion of the rotating shaft, and a stator having a mounting portion for mounting to the stator mounting portion in the resin mold portion; A magnet provided at a corresponding position of the winding and a core corresponding to the magnet; A washing machine motor including a rotor mounted on the rotary shaft after the serration portion is engaged with the serration portion of the rotary shaft, and the motor is attached to the stator mounting portion. The stator that is not magnetized and the rotor that has been magnetized and that has not been attached to the serration portion of the rotating shaft are combined by magnetic attraction, and then configured to be attached to the stator attachment portion, the stator is provided with a concave or washing machine side positioning means and fitting the convex der Ru annular convex or concave der Ru annular stator side positioning means is provided in the stator mounting portion, the stator side a stator mounting portion side end surface of the positioning means, the washing machine side positioning means in the stator-side positioning means An angle formed by a corner formed by a peripheral surface to be fitted, a stator side end surface of the washing machine side positioning means, and a peripheral surface fitted to the stator side positioning means in the washing machine side positioning means. both the parts or Ri one is tapered surfaces or arcuate surfaces der, the difference between the minimum tip diameter of the largest opening diameter as the convex positioning means of said concave positioning means diameter and a rotor of said stator What is characterized by setting larger than the difference from the diameter is preferable.

According to such a feature, the motor combines the stator that is not attached to the stator attachment portion and the rotor that is magnetized and not attached to the serration portion of the rotating shaft by magnetic attraction. After that, the stator is attached to the stator mounting part, and the stator is attached to the stator of the washing machine based on the position restriction based on the axis reference for driving the rotor while fitting the serration part of the rotor with the serration part of the rotating shaft. The stator side positioning means is fitted to the washing machine side positioning means, and the stator side and the washing machine side positioning means are both or one of the taper surface or the arc-shaped surface , and the concave shape. The difference between the maximum opening diameter of the positioning means and the minimum tip diameter of the convex positioning means is the stator diameter and rotor diameter. By set from the difference largely without influence of such deviation, stator-side positioning means starts to fit securely accepted the washing machine side positioning means. Thereafter, as the fitting proceeds, the diameter of the fitting position of the tapered surface or arcuate surface becomes smaller, so that the stator side positioning means secures an appropriate gap with respect to the rotor by the washing machine side positioning means. The stator is positioned at an appropriate position with respect to the stator mounting portion by fitting the stator-side positioning means to the washing machine-side positioning means after the fitting position where the tapered surface or arcuate surface ends. Can be used for attachment to the stator attachment .

  Furthermore, in the assembly method that employs a motor having a rotor on the outer periphery of the stator, the rotor covers the outside of the stator, and the gap between the two is blocked by the rotor, making it difficult to visually observe. However, according to the assembling method as described above, an appropriate gap can be automatically secured without human work such as visual recognition.

  In addition, even in an assembly method that employs a motor having a rotor on both the inner and outer circumferences of the stator, the rotor covers the outside of the stator and the gap between the two is blocked by the rotor, making it difficult to visually observe the conventional method. In this method, it is necessary to simultaneously secure the gap and align the position of the rotation prevention means. However, according to the above assembling method, an appropriate gap can be automatically secured without human work such as visual recognition.

  In addition, the motor is obstructed by the rotor covering the stator by means that the means for attaching the stator to the washing machine is provided radially outward from the rotor located on the outer periphery of the stator. It can be attached to the washing machine without any problems.

According to the present invention, mating between the stator and the rotor are both in a free state from the other, it becomes easy task that allows without ensuring a uniform gap, fit for attachment to the rotational axis of the rotor The alignment is also a simple operation even when the rotation preventing means is aligned in a magnetically attracted state where there is no fear of separation between the stator and the rotor and in a free state. At this stage, the stator is independently attached to the stator mounting portion , and even if the stator is positioned to ensure a uniform gap with respect to the rotor , it is determined from the unique positional relationship between the rotating shaft and the stator mounting portion. It is only necessary to perform positioning by using a mechanical force at a predetermined position. Therefore, even a worker who is not skilled in assembling a motor that is attached to the stator attaching portion can be accurately and easily performed in a short time without any individual difference, and the assembling cost can be reduced.

  Hereinafter, a motor assembly method according to an embodiment of the present invention and a motor suitable for the method will be described with reference to FIGS. 1 to 8 for the understanding of the present invention. In addition, the following description is a specific example of this invention, Comprising: The content of description of a claim is not limited.

  The washing machine of the present embodiment has the basic configuration described above, and as shown in FIG. 1, a rotation in which a large number of holes 3 are formed in a water tub 2 elastically supported by a suspension structure in the washing machine body 1. A drum 4 is provided. The rotating drum 4 is driven to rotate by a motor 5, and the laundry is rotated through the front opening of the water tub 2 and the front opening of the rotating drum 4 by opening a door 6 that can be opened and closed on the front side of the washing machine body 1. The drum 4 can be taken in and out. When the door 6 is opened and the laundry is put into the rotating drum 4 and the operation is started with the addition of the detergent, the water tank 2 is supplied with water from the water supply system 7, and the supplied water passes through the holes 3. A required amount of water is also supplied into the rotating drum 4. When the rotary drum 4 is driven to rotate at a rotational speed of about 40 rpm, for example, by the motor 5, the laundry stored in the rotary drum 4 is hooked on the stirring protrusion 8 provided on the inner peripheral surface of the rotary drum 4 and rotated. When the laundry is lifted in the direction and dropped from an appropriate height, the laundry is washed by applying the action of tapping. After this washing process, the dirty washing water is drained by the drainage system 11, and the rinsing process is performed using newly supplied water. When the rinsing process is completed, the rotating drum 4 is rotated at a high speed of, for example, about 1000 rpm, and the dehydrating process is performed. These steps are automatically executed based on a predetermined control procedure. In the drum type washing machine of the present embodiment, the air in the water tub 2 and the rotating drum 4 is sucked by the blower 12 and dehumidified and heated in order, and is blown into the water tub 2 and the rotating drum 4 as dry high-temperature air. The drum-type washing machine is called a drum-type washing / drying machine equipped with a drying system 13 that repeats the process, and the drying process is automatically executed after the dehydration process. Here, the washing machine of the present embodiment constitutes a drum type washing and drying machine.

  For automatic execution of each process as described above, the motor 5, the water supply system 7, the drainage system 11, and the drying are performed by a control device such as the control board 9 equipped with a microcomputer in accordance with the mode setting and control program from the operation panel 14. It has a function of automatically controlling the system 13 to perform a washing process, a rinsing process, and a drying process. The water supply system 7 can supply water in a timely manner as indicated by a solid arrow by opening and closing the electromagnetic valve, and the water supply can be used to supply the detergent in the detergent container into the water tank 2 in a timely manner. The drainage system 11 can drain as shown by a one-dot chain line arrow when necessary, such as at the end of the washing process or at the end of the rinsing process, by opening and closing the electromagnetic valve. The drying system 13 is a waste thread in the air introduced from the water tank 2 and the rotating drum 4 in a circulation path in which the air in the water tank 2 and the rotating drum 4 is circulated by the blower 12 as indicated by the broken-line arrows shown in FIGS. A filter 15 that collects and removes dust, a dehumidifying unit 16 that dehumidifies the introduced air after dust removal, and a heating unit 17 that heats the air after dehumidification to dry high temperature air. Located downstream, it is less susceptible to moisture. In the illustrated example, the dehumidifying unit 16 and the heating unit 17 are an evaporator and a condenser that circulate refrigerant through a compressor 18 and exchange heat with circulating air, and constitute an air conditioner 19.

  The rotating drum 4 is directly connected to the rotating shaft 4a with a motor 5 attached to the back surface of the water tank 2, and together with the water tank 2, the rotating shaft direction is inclined from the horizontal direction to the angle θ = 20 ± 10 degrees from the opening side to the bottom side. Compared to the horizontal installation, even if the rotating drum 4 is installed at the same height, the laundry can be easily done without taking an unreasonable posture of being bent by the opening being obliquely upward. Can be put in and out. In particular, from the experience of the present inventors, by setting the inclination angle θ to 20 ± 10 degrees, even if there is a difference in height from a child (excluding infants) to an adult, even a wheelchair user, laundry It is possible to obtain a state in which the operation of loading and unloading is most easily performed. Further, there is an advantage that a deep water storage state can be obtained even with a small amount of water because water supplied into the rotating drum 4 is accumulated on the back side. In the example shown in FIG. 1, the rotating shaft 4a is directly connected to the back surface of the rotating drum 4 so as to transmit the rotation of the motor 5. However, the present invention is not limited to this.

  However, other washing machines such as a drum-type washing machine without a drying function, a drum-type washing machine with a vertical drum, or a rotating drum may be used. Further, the present invention can be applied to any part of the washing machine depending on the washing method or driving method of the washing machine, and the present invention can be applied to the motor 5 for driving the rotor 5b of the motor 5 to rotate. There is no particular problem with the shaft of the rotary shaft 4a, the support structure of the rotary shaft 4a, and the rotation transmission system to the driven object such as the rotary drum 4.

  Here, the motor 5 of the present embodiment has a stator 5a and a rotor 5b as shown in FIGS. 1 and 3 to 5, and the stator 5a is arranged in the circumferential direction as shown in FIG. 1, 3, and 4 are attached to the rotating shaft 4 a that is attached to the back surface of the water tank 2 by the plurality of attaching means 30 and transmits the rotation to the rotating drum 4 in the water tank 2 as shown in FIGS. 1 and 3. The rotor 5b is rotated by the electromagnetic action by the three-phase alternating current with the rotor 5b attached as shown, and the rotating drum 4 is driven to execute a washing process, a rinsing process, a dehydrating process, a drying process, and the like. Can do.

  Due to this electromagnetic action, the stator 5a of the motor 5 has a winding 124 wound around a core 20 having teeth 20a extending in the radial direction, as shown in FIG. The rotor 5b has a magnet 22 and a core 23 corresponding thereto.

  In addition, for the attachment, an attachment foot 32 formed outwardly extending on the outer periphery of the axial end surface on the side of attachment of the resin mold portion 31 in which the stator 5a is molded with a resin material to the water tank 2, and the attachment foot 32 is composed of fasteners such as bolts 34 that are screw-fastened to a metal stator mounting seat 33 provided on the back surface of the water tank 2, and each mounting foot 32 is shown in FIGS. An attachment hole 32a is provided, and as shown in FIG. 4, the attachment hole 32a is screwed into the screw hole 33a of the stator attachment seat 33 provided by bolting the bolt 34 from the side opposite to the water tank 2 to the back surface of the water tank 2. The stator 5a is firmly attached to the back surface of the water tank 2 by fastening.

  The rotor 5b also has a resin mold portion 37 molded with a resin material as shown in FIGS. 4 to 6, and a metal boss is provided at the center of the ceiling portion 37a on the side opposite to the water tank 2 in the resin mold portion 37. An attachment hole 37b formed by inserting 38 is formed. The mounting hole 37b is fitted to the rear end of the rotating shaft 4a, which is supported by the bearing portion 24, on the side opposite to the water tank 2 so as to prevent rotation in the rotational direction in which the two serration portions 37b1, 4a1 are engaged. After that, the presser washer 39 is fastened to the rotating shaft 4a with a fastener such as a bolt 40, so that the rotor 5b is firmly attached to the rotating shaft 4a.

  In order to perform assembly with attachment of the motor 5 to the washing machine main body 1 with good assemblability, the present embodiment particularly adopts the steps (a) to (g) as shown in FIG. Basically, the rotor 5b in which the magnet shown in (c) is magnetized and is not attached to the drive shaft is replaced with the stator 5a that is not attached to the washing machine body 1 shown in (d). In order to attach the rotor 5b fitted with the stator 5a to the rotating shaft 4a as shown in (e) after the first step of fitting together as shown in (e) and after this first step. At least the second step of fitting as shown in (f), and after this second step, the water tank 2 on the washing machine body 1 side as shown in (f), specifically, the water tank 2 It attaches to the stator attachment seat 33 attached to. For this purpose, as shown in (a), a pre-process for press-fitting the bearing 41 and the oil seal 42 also shown in FIG. 4 from the water tank 2 side to the bearing portion 24 of the stator mounting seat 33, As shown in b), a pre-process for press-fitting the bearing 143 also shown in FIG. 4 on the anti-water tank 2 side of the bearing portion 24 and bearing the rotating shaft 4a is necessary. For this purpose, it is convenient for the work that the press-fitting side of the bearing portion 24 faces upward, and the stator mounting seat 33 is turned upside down between the press-fitting work (a) and the press-fitting work (b). It is preferable that, after the work of (b), the mounting side of the motor 5 of the stator mounting seat 33 is directed upward, and for this purpose, in FIG. Subsequent inversion to (b) makes the mounting side of the motor 5 face upward, and thereafter the necessity for inversion is eliminated. Actually, (c) is the final opportunity to perform magnetization and magnetization management. Further, (c) and (d) are final opportunities for checking whether or not the resin mold portions 31 and 37 of the rotor 5b and the stator 5a are peeled off. The fitting between the rotor 5b and the rotating shaft 4a in (e) involves the alignment work between the serration portions 37b1 and 4a1 as described above. The attachment of the stator 5a in (f) involves management of the fastening torque of the bolt 34 shown in FIGS. The fastening operation by the bolt 40 shown in FIGS. 3 and 4 to the rotating shaft 4a of the rotor 5b may be performed after the rotor 5b is fitted to the rotating shaft 4a or after the stator 5a is attached. In (g), the motor 5 after assembly is inspected for electromagnetic characteristics. Specifically, the induced voltage is replaced with the effective value, the sensor pulse width, the sensor deviation time of the signal detected by the rotational position detecting means 26 with respect to the rotor 5b as shown in FIG. 5, that is, the variation of the pulses in one round, etc. is there.

  According to such an assembling method, it is a detent means for fitting the stator 5a and the magnetized rotor 5b and attaching the rotor 5b to the rotating shaft 4a which is a shaft for driving the washing machine. Since the fitting work involving the positioning of both of the serration portions 37b1 and 4a1 can be performed independently in a different process, the mutual work is not disturbed. Therefore, the stator 5a and the rotor 5b can be fitted together in a free state where they are not attached to each other, and it is not necessary to secure a uniform gap between them at this stage, which is a simple operation. . In addition, the rotor 5b can be fitted to the rotating shaft 4a in a stable fitting state by magnetic adsorption that is offset to one of the stator 5a and the rotor 5b, and in a free state that cannot be attached to the other. However, it involves simple positioning of the anti-rotation means such as the serrations 37b1, 4a1. At this stage, whether or not the attachment of the rotor 5b to the rotating shaft 4a is completed, the stator 5a is attached to the washing machine body 1, specifically, a stator attachment seat that is a fixing member on the washing machine body 1 side. In this attachment, it is necessary to overcome the magnetic attraction between the stator 5a and the rotor 5b with respect to the rotor 5b to ensure a uniform gap. 4a and the washing machine main body 1, and therefore on the washing machine main body 1 side determined according to a unique positional relationship with the stator mounting seat 33 which is a fixing member on the washing machine main body 1 side. It is only necessary to perform positioning with respect to a predetermined position on the stator mounting seat 33, which is a fixing member on the side, by using mechanical force or the like.

As a result, the stator 5a and the rotor 5b can be easily fitted to each other in a state where both the stator 5a and the rotor 5b are free from each other without securing a uniform gap, and the rotor 5b can be attached to the rotating shaft 4a. As for the fitting, the serration portions 37b1, 4a1, etc., which are the detent means, are aligned in a magnetically adsorbed state without worrying about separation and rattling of the stator 5a and the rotor 5b and free from others. It will be an easy task. At this stage, the stator 5a is attached to the washing machine body 1 alone, and even if the stator 5a is positioned to ensure a uniform gap with respect to the rotor 5b, the rotating shaft 4a and the washing machine body 1 side It is only necessary to perform positioning by using a mechanical force at a predetermined position determined from the unambiguous positional relationship. Therefore, even an unskilled operator who can assemble the motor 5 with attachment to the washing machine main body 1 can be accurately and easily performed in a short time without individual differences, and the assembly cost can be reduced.

  Here, the assembly accompanying the attachment of the motor 5 to the washing machine main body 1 side fixing part as described above is the washing machine main body 1 side capable of handling the stator mounting seat 33 which is the fixing part of the washing machine main body 1 side alone. Specifically, by performing as shown in FIGS. 7A to 7B in a state before being attached to the water tank 2, the necessary work can be easily performed. However, the present invention is not limited to this, and it can be assembled with attachment to the stator attachment portion on the side of the washing machine main body 1 or the equipped equipment.

  Furthermore, in the present embodiment, as shown in FIG. 4, a substantially annular stator side that is a convex or concave shape that fits into the stator mounting seat 33 that is the stator mounting portion of the stator 5 a and the washing machine body 1. Positioning means 143 and washing machine side positioning means 44 are provided, and the stator side positioning means 143 is fitted to the washing machine side positioning means 44 as shown in FIG. 4 in the third step. is there. Thereby, in the operation | work which fits the rotor 5b to the rotating shaft 4a with the position alignment of rotation prevention means, such as serration part 37b1, 4a1, the stator 5a is the same as the rotor 5b from the initial fitting of the rotor 5b to the rotating shaft 4a. Positioning on the stator side by utilizing the position restriction in the rotation stop state based on the rotation shaft 4a and approaching the stator mounting seat 33 on the washing machine body 1 side, that is, approaching the mounting position. The means 143 is fitted to the washing machine side positioning means 44, and the stator 5a is determined from a unique positional relationship between the rotating shaft 4a and the washing machine body 1 side, specifically, the stator mounting seat 33. Since it is mechanically positioned at a predetermined position, an appropriate gap is automatically established with respect to the rotor 5b positioned by the rotating shaft 4a. It can be subjected to mounting the stator 5a and. For this reason, the stator side positioning means 143 and the washing machine side positioning means 44 need only correct the amount of deviation caused by the deviation in the appropriate gap between the stator 5a and the rotor 5b. Good. Specifically, since the gap is about 0.65 mm, the amount of deviation that causes magnetic adsorption on one side is equal to the size of the appropriate gap, and it is only necessary to correct this deviation of 0.65 mm.

  Here, both the stator-side positioning means 143 and the washing machine-side positioning means 44, which are substantially annular, need to be concentric with the rotating shaft 4a. However, it does not have to be a perfect ring, and even if it is divided into an appropriate number, both must be displaced in the direction perpendicular to the axis during positioning, or deformation that causes such displacement will not occur. Effective positioning is obtained.

  As the motor 5 employing such an assembly method, the stator 5a includes a substantially annular washing machine side positioning means 44 which is a concave or convex shape provided on the washing machine body 1 side, that is, on the stator mounting seat 33 side. What is necessary is just to provide the substantially annular stator side positioning means 143 which is convex or concave to be fitted.

  However, as shown in the enlarged view of FIG. 4, the end surface 43 a of the stator side positioning means 143 on the washing machine main body 1 side and the periphery of the stator side positioning means 143 fitted to the washing machine side positioning means 44. A corner 43c formed by the surface 43b, an end surface 44a on the stator 5a side of the washing machine side positioning means 44, and a peripheral surface 44b fitted to the stator side positioning means 143 in the washing machine side positioning means 44. By forming both or one of the corners 44c formed by the taper surface or the circular arc surface as shown in the figure, the following more characteristic assembly can be performed.

  While fitting the rotor 5b to the rotating shaft 4a, the stator 5a is brought close to the stator mounting seat 33, which is a stator mounting portion of the washing machine body 1, based on the position restriction based on the rotating shaft 4a of the rotor 5b, and the stator side positioning means 143 is placed. Are fitted to the washing machine side positioning means 44 for positioning, the tapered surfaces or circles on both the positioning means 43, 44 on the stator 5a side, the washing machine body 1 side or one of the corners 43c, 44c. The maximum opening diameter of the arcuate surface is made larger than the offset position generated by offsetting in the appropriate gap between the stator 5a and the rotor 5b positioned on the rotating shaft 4a, that is, the size including the offset area. By doing so, the stator-side positioning means 143 is reliably received by the washing machine-side positioning means 44 without such an offset effect. Begins fitted is provided. Thereafter, as the fitting progresses, the diameter of the fitting position of the tapered surface or arcuate surface of the corners 43c, 44c becomes smaller, so that the stator side positioning means 143 is made to the rotor 5b by the washing machine side positioning means 44. Thus, the stator side positioning means 143 is fitted to the washing machine side positioning means 44 after the fitting position where the tapered or arcuate surfaces of the corners 43c and 44c are guided to the proper position side to ensure an appropriate gap. Accordingly, the stator 5a is positioned at an appropriate position with respect to the washing machine main body 1 side and can be used for attachment to the washing machine main body 1 side. Accordingly, it is only necessary to overcome the magnetic attraction between the stator 5a and the rotor 5b and press the stator 5a against the stator mounting seat 33 side, that is, the washing machine main body 1 side as the rotor 5b is fitted to the rotating shaft 4a.

  Furthermore, in the assembly using the motor 5 having the outer rotor 5b2 at least on the outer periphery of the stator 5a, the rotor 5b covers the outside of the stator 5a, and the gap between the two is blocked by the rotor 5b. In this method, it is necessary to simultaneously secure the gap and align the position of the rotation prevention means. However, according to the above assembling method, an appropriate gap can be automatically secured without human work such as visual recognition.

  In addition, even when the motor 5 having the inner rotor 5b1 and the outer rotor 5b2 is employed on both the inner and outer circumferences of the stator 5a as shown in FIGS. 1 and 3 to 5, the rotor 5b is located outside the stator 5a. With the conventional method, it is necessary to simultaneously secure the air gap and align the anti-rotation means with the covering and the air gap between the two being blocked by the rotor 5b. Thus, an appropriate gap can be automatically secured without human work such as visual recognition. In particular, in the motor 5 having the inner rotor 5b1 and the outer rotor 5b2 on both the inner periphery and the outer periphery of the stator 5a, the toroidal in which the winding 124 shown in FIG. By applying the winding, the circumference of the winding 124 can be shortened, so that the motor can be reduced in size and efficiency. Further, the number of poles of the motor 5 is 2P, the number of slots is S, N Is a natural number, a combination of P: S = 5N: 6N is preferable because the distributed-winding motor 5 can be configured and noise can be reduced.

  By the way, compared with the case of installation in the horizontal direction, the laundry tends to gather at a low position in the rotation axis direction, and the occurrence of entanglement and twisting is greatly improved, and the function of mechanical force is enhanced and the wrinkle is less likely to occur. In the present embodiment, the control board 9 drives the bottomed cylindrical rotary drum 4 installed so that the rotation axis direction is inclined downward from the horizontal direction from the opening side toward the bottom side. Regarding the control, the forward / reverse arc rotation drive mode in which the rotating drum 4 is alternately rotated between the forward and reverse arc rotations of 90 ° and less than 180 ° alternately, and the laundry lifted by the rotation of the rotating drum 4 A forward / reverse continuous rotation drive mode in which the continuous rotation of the rotating drum 4 is repeated forward and backward alternately at a rotational speed showing a behavior of falling from a height where the dead weight wins is provided. Therefore, both of these drive modes can be executed as required.

  In particular, the laundry 21 can be lifted up to more than 90 degrees and less than 180 degrees by arc rotation of the rotating drum 4 exceeding 90 degrees and less than 180 degrees. The object 21 is surely and instantaneously peeled off from the inner surface of the rotating drum by the forced peeling force and its own weight due to the rotational inertia applied to the laundry due to a deceleration or braking state for reversing the rotation at or near the final time of lifting the object 21. Since the lifting position and the falling position of the laundry 21 can be alternately switched left and right in each arc rotation drive, the lifting action of the laundry 21 can be improved, Can exert power. Further, in the forward / reverse arc rotation drive mode alone, the tangling, twisting, wrinkles, etc. of the laundry 21 are reduced, but the vertical position of the laundry 21 is difficult to change, and uneven washing tends to occur. By using the forward / reverse continuous rotation drive mode in combination, the position of the laundry 21 in the vertical direction can be changed, that is, the tangling, twisting, and wrinkle of the laundry 21 in the forward / reverse continuous rotation drive mode can be reduced. At the same time, by reducing the imbalance in applying mechanical force to the laundry 21 in the forward / reverse arc rotation drive mode, the two different behaviors of the laundry 21 being rinsed and rinsed depending on both modes, specifically, normal Depending on the reverse arc rotation drive mode, the laundry 21 can be prevented from getting entangled, twisted, and wrinkled, and the hand washing operation can be performed firmly. It is given a uniform washing behavior to wash while reducing the moving irregularities. Further, the forward / reverse arc rotation drive mode performs an operation of alternately repeating sudden forward rotation and sudden reverse rotation, so that the drive load applied to the motor 5 is large, but the forward / reverse continuous rotation drive mode where the drive load applied to the motor 5 is small. By using together, the drive load concerning the motor 5 can be reduced.

  In particular, in the forward / reverse arc rotation drive mode, the laundry 21 shown in FIG. 4 is illustrated as circled symbols 2, 4, and 6 in FIG. 8A due to the arc rotation of the rotating drum 4 exceeding 90 degrees and less than 180 degrees. The position is lifted from the broken line position to the solid line position by exceeding 90 degrees and less than 180 degrees at the maximum. Further, by performing this arc rotation drive in the order of the circled signs 2, 4, 6, 4, 6,... Shown in FIG. 8A, the circled sign 3 shown in FIG. As shown in FIG. 5, due to the forced peeling force due to the inertia applied to the laundry 21 and its own weight, a deceleration or braking state for reversal of rotation occurs at or near the solid line position that is the final point of lifting of the laundry 21. A parabola as shown by the arrow from the broken line position to the solid line position can be drawn from the inner surface of the rotating drum 4 and can be reliably and instantaneously peeled off. In addition, the lifting position and the falling position of the laundry 21 can be alternately switched left and right as shown in FIG. The mechanical force can be exerted on the laundry 21.

  As a result, the laundry 21 is lifted up to the upper left and right sides of the rotating drum 4 by rotating the arc of the rotating drum 4 alternately in the forward and reverse directions, and the laundry 21 is lifted or decelerated or braked in the vicinity thereof. By lifting the laundry 21 from the inner surface of the rotating drum 4 reliably and instantaneously by the forced peeling force and its own weight due to its inertia and dropping it to the left and right sides of the rotating drum 4, the lifting position of the laundry 21 for each arc rotation, By changing the fall position alternately left and right, the unraveling action of the laundry 21 is enhanced to prevent twisting and sticking to the inner surface of the rotating drum 4 as well as entanglement. The sticking can be greatly eased. In addition, the number of times that the laundry 21 can be mechanically applied to the laundry 21 and the number of drops of the laundry 21 that has a scouring effect, a rinsing effect, and a wrinkle-stretching effect by slamming is greatly increased. It is possible to realize functions in each process performed by the drum type washing machine. Therefore, by executing such a forward / reverse arc rotation drive mode in the drying process, the laundry 21 is strongly entangled with the inner surface of the rotating drum 4 in the state of twisting, twisting, and wrinkling at the end of the washing process and the rinsing process in the dehydration process. Even if it is pressed and sticked strongly in the state after dehydration, it is a high solution that involves alternating the left and right of the lifting position and dropping position of the laundry 21 and the left and right replacement of the laundry 21 thereby. By using the forward / reverse continuous rotation drive mode in combination with the action and mechanical force smoothly, the laundry 21 is exchanged up and down to increase the air permeability to the individual laundry 21 and dry. Since hot air can reach every corner, it can be dried uniformly in a short time. In addition, since the wrinkles are stretched by the beating action when the laundry 21 is dropped in the absence of water, the individual laundry 21 can be spread by twisting and the fibers can be regenerated, so that the finished state can be greatly enhanced.

  In order to realize such a forward / reverse arc rotation drive mode of the rotating drum 4, the driving load applied to the motor 5 is very large. However, torque is increased by arranging the inner rotor 5b1 and the outer rotor 5b2 on the inner and outer circumferences of the stator 5a. By adopting the motor 5, the forward / reverse arc rotation drive mode in which the small motor 5 has a sudden reversal operation is applied to the laundry 21 with sudden braking between the forward / reverse arc rotation and the sudden reverse arc rotation. It can be carried out without difficulty even under the harsh conditions of giving the ideal behavior as shown in. However, the mechanical load can be reduced by alternately using the forward / reverse arc rotation drive mode and the forward / reverse continuous rotation drive mode with a low drive load.

  It can be applied to the assembly of a motor having a stator and a rotor with attachment to a washing machine, and the assemblability and assembly accuracy can be improved.

Sectional drawing which shows the principal part structural example of the drum type washing machine to which the assembly method of the motor which concerns on embodiment of this invention is applied. The rear view which looked at the inside of the drum type washing machine. Sectional drawing which shows the substantially half part of the motor attachment part of the drum type washing machine. Sectional drawing of the attachment of the motor employ | adopted to the drum type washing machine, and an assembly state. The perspective view which decomposed | disassembled the stator and rotor of the motor of the drum type washing machine. The perspective view seen from the back of the motor of the drum type washing machine. The assembly process drawing with the attachment to the washing machine main body side of the drum type washing machine motor. Process drawing in forward / reverse continuous rotation drive mode in the same drum type washing machine, and behavior explanatory drawing of the laundry. Sectional drawing which shows the conventional drum type washing machine which employ | adopted the inner rotor type motor. Sectional drawing which shows the conventional drum type washing machine which employ | adopted the outer rotor type motor. The rear view of the motor of the drum type washing machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Washing machine main body 2 Water tank 3 Hole 4 Rotating drum 4a Rotating shaft 5 Motor 5a Stator 5b Rotor 5b1 Inner rotor 5b2 Outer rotor 6 Door 7 Water supply system 9 Control board 11 Drainage system 13 Drying system 20 Core 20a Teeth 22 Magnet 23 Core 24 Bearing part 30 Mounting means 31, 37 Mold portion 32 Mounting foot 33 Stator mounting seat 34 Bolt

Claims (8)

A washing machine body, a water tank elastically supported in the washing machine body, a rotating drum formed with a plurality of holes and disposed in the water tank, and one end attached to the back surface of the rotating drum and serrated on the other end Winding windings on a rotating shaft having a portion, a stator mounting portion integrally formed with a bearing portion into which a bearing attached to the back surface of the water tank and bearing the rotating shaft is press-fitted, and a core having a radially extending tooth A metal boss formed with a serration portion that engages with the serration portion of the rotating shaft , and a stator having a mounting portion for mounting to the stator mounting portion in the resin mold portion ; the boss has a magnet and core corresponding thereto is provided in a corresponding position of the winding, a magnet and core molded integrally of a resin material the volume A a serration portion assembling method of a washing machine motor comprising a rotor which is to be attached to the rotary shaft after engaged with the serration portion of the rotary shaft,
A first step of combining the stator that has not been attached to the stator attachment portion and the rotor that has been magnetized and has not been attached to the serration portion of the rotating shaft by magnetic attraction ; and After the first step, of the stator and rotor combined by the magnetic attraction, the serration portion of the rotor is engaged with the serration portion of the rotating shaft that is supported by the stator mounting portion via the bearing. a second step of Ru engaged, after this second step, the one of the stator and rotor combined by magnetic attraction, a third mounting the mounting portion of the stator to the stator mounting portion by fastening by bolts A method for assembling a motor for a washing machine, comprising : The only set a stator and before kiss stator convex or concave der Ru annular shape mating the mounting portion stator side positioning means and the washing machine side positioning means, in the third step, the stator-side positioning means The method for assembling the motor of the washing machine according to claim 1, wherein the washing machine side positioning means is fitted. The method of assembling a motor for a washing machine according to claim 1 , wherein the rotor is provided on an outer periphery of the stator. The method of assembling a motor for a washing machine according to claim 1 or 2, wherein the rotor is provided on both an inner periphery and an outer periphery of the stator. A washing machine body, a water tank elastically supported in the washing machine body, a rotating drum formed with a plurality of holes and disposed in the water tank, and one end attached to the back surface of the rotating drum and serrated on the other end Winding windings around a rotating shaft having a portion, a stator mounting portion integrally formed with a bearing portion in which a bearing attached to the back surface of the water tank and bearing the rotating shaft is press-fitted, and a core having teeth extending in the radial direction A metal boss formed with a serration portion that engages with the serration portion of the rotating shaft, and a stator having a mounting portion for mounting to the stator mounting portion in the resin mold portion; A magnet provided at a corresponding position of the winding and a core corresponding to the magnet; A motor of a washing machine having a rotor which is to be attached to the rotary shaft after engaged with the serration portion of the rotary shaft of the serrated portion,
After combining the stator that is not attached to the stator attachment portion and the rotor that is magnetized with the magnet and that is not attached to the serration portion of the rotating shaft by magnetic attraction. , configured to be attached to the stator mounting portion to said stator, said washing machine side positioning means and engaging the concave or convex der Ru annular provided in the stator mounting portion, Ru convex or concave der An annular stator side positioning means is provided, and a corner portion formed by a stator mounting portion side end face of the stator side positioning means and a peripheral surface fitted to the washing machine side positioning means in the stator side positioning means, The stator side end surface of the washing machine side positioning means and the stator side positioning in the washing machine side positioning means Both the circumferential surface and forms the corner portion fitted against means or minimum one of Ri tapered surfaces or arcuate surfaces der, maximum aperture diameter and the convex positioning means of said concave positioning means, A motor for a washing machine, wherein a difference from a tip diameter is set larger than a difference between a diameter of the stator and a rotor . The washing machine motor according to claim 5, wherein the rotor is provided on an outer periphery of the stator. The motor of the washing machine according to claim 5, wherein the rotor is provided on both an inner periphery and an outer periphery of the stator. Wherein the mounting portion of the stator mounting portion of the stator, the motor of the washing machine according to claim 6 or 7, characterized in that provided radially outward from the rotor located on the outer periphery of the stator .

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