KR101648109B1 - Washer For Improving Noise And Extending Laundry Space - Google Patents

Abstract

The present invention relates to a washing machine, and more particularly, to a washing machine which is capable of increasing the overall length of an undercasing, reducing the overall length of a drum and a plate, extending a total length of a shaft pulley, reducing overall coupling length, And the assembly of these parts processed by a method of reducing the overall height of the boss is constructed in the center of the inside of the washing machine, the overall load of the washing machine is reduced and the capacity of the laundry is increased. The present invention provides a washing machine for securing a space for a washing capacity and for improving a noise, which can prevent a noise such as a collision noise generated during driving and secure a space capable of increasing the capacity of the laundry.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine,

The present invention relates to a washing machine, and more particularly, to a washing machine, and more particularly, to a washing machine, which is capable of blocking an impact sound generated in a region of a shaft pulley rotated together with a rotor during operation of the washing machine, To a washing machine.

The conventional automatic washing machine is composed of an AC motor, a pulley, a V-belt, a pulley, and a gear mechanism to transmit rotational power to the washing machine.

Most of these conventional automatic washing machines employ AC motors. Therefore, there is a problem that the competitiveness of the washing machine becomes more intense and noise such as an impact sound is generated when the washing machine is in the washing mode, that is, when the washing machine starts to work.

In this process, the up and down reciprocating motion of the rotor occurs due to the thrust, and the up and down reciprocating motion of the rotor is transmitted to the rotor As the shaft pulley of the mechanism shifts, the collision between the shaft pulley and the fluid bearing generates a noise completely.

As such, the competitiveness of washing machine products employing AC motors has intensified, and even noise problems that occur during driving of the washing machine have been raised, requiring differentiated and advanced technology of automatic washing machines.

The differentiation and advanced technology of the automatic washing machine is adapted to washing machine products such as low noise and high efficiency, and research and development of a washing machine based on such differentiated and advanced technology are actively performed.

As a washing machine that has been upgraded to meet this demand, BLDC motor (addition of motion by RPM control), low noise of about 65dB and high efficiency of about 10.5Wh / kg can be realized. .

Particularly, a stirring type automatic washing machine employing a BLDC motor having a recent speed control has been introduced. Such a stirring type automatic washing machine is applied to a pulsator shaft and a clutch device capable of selectively transmitting power to the shaft.

However, in the automatic washing machine employing the BLDC motor, the above-described noise problem is continuously generated, and a technical skill for fundamentally reducing or blocking the noise is required.

On the other hand, technologies related to a fully automatic washing machine include those disclosed in Patent Documents 10-1015241, 10-2004-0071420, 10-0820801, 10-0437791, 10-0890891 , Published Unexamined Patent Application No. 10-2004-0049160, and Unexamined Patent Publication No. 2003-0073850.

Patent No. 10-1015241, Published Japanese Patent Application No. 10-2004-0071420, Korean Patent No. 10-0820801, Patent No. 10-0437791, Patent No. 10-0890891, Published Japanese Patent Application No. 10-2004-0049160, Open Patent Publication No. 2003-0073850.

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a washing machine for blocking and preventing noise such as an impact sound during driving caused by a conventional washing machine employing a BLDC motor.

In order to achieve the above-mentioned object, the present invention is to provide an electric power steering apparatus which is capable of increasing the overall length of the undercasing, reducing the total length of the drum and the plate, extending the total length of the shaft pulley, reducing the overall length of the coupling, As the power transmission assembly composed of the assembling of these parts processed by the method by the reduction of the total length height, the reduction of the total length of the boss, and the reduction of the total length of the clutch lever is built in the center of the inside of the washing machine, And the burr hole is further processed, the drum and the plate are mounted and fixed inside the under case, and the outer diameter is enlarged and machined , The shaft pulleys extend the length of the serration along with the reduction of the length of the grinding portion, And a length reduction of the machining axis in height, the boss is machined, the length of aperture diameter reduction, the characteristics of the space available in the washing machine, and an example for improving the noise of the washing capacity of POM (Poly Oxy Methylene) material is used.

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And a noise reduction member interposed between the shaft pulley and the fluid bearing of the power transmission assembly and between the shaft pulley and the coupling to prevent noise such as an impact sound, .

The noise reduction member is an example of a washing machine for securing a space for a laundry capacity and improving noise, which is constituted by a washer having an elastic body.

The elastic body is an example of a washing machine for securing a space for a laundry capacity and improving noise, which is made of compressed wool, which is joined in such a manner as to cover both the upper and lower surfaces of the washer.

The washer is an example of a washing machine for securing a space for a laundry capacity and improving noise when the washer is provided as more than one single piece and a plurality of shock absorbing springs are further provided therebetween when a pair of the plural pieces is provided.

As described above, according to the present invention, there is provided a washing machine for securing a space of a laundry capacity and improving noise by using a BLDC motor and a washer having an elastic body together with a deformation processing of components of the power transmission assembly, And it can absorb the market of drum washing machine, and it can contribute to increase sales and increase profit rate through market preemption.

In addition, the washing machine according to the present invention is highly precise in terms of the precision of the teeth connection according to the precise manufacture and the combination of the components of the power transmission assembly, and parts can be omitted, thereby reducing the manufacturing cost of the washing machine and reducing the load of the washing machine. have.

In addition, the washing machine according to the present invention is capable of reducing the overall height of the power transmission assembly that is completed through the modification of the components of the power transmission assembly, thereby securing a capacity space for inputting the laundry, And the amount of input can be increased.

1 is a structural cross-sectional view of a power transmission assembly of a washing machine of the present invention.
2 is a structural cross-sectional view showing in detail the vicinity of the drum is located inside the under case shown in FIG. 1;
3 is a perspective view showing the noise reduction member of the first embodiment shown in Figs. 1 and 2. Fig.
FIG. 4 is an exploded perspective view of the noise attenuating material shown in FIG.
5 is a longitudinal sectional view showing a cross section of the noise reduction material shown in Fig.
6 is a perspective view showing the noise reduction member of the second embodiment.
7 is an exploded perspective view showing the noise reduction material shown in Fig. 6 separated from the noise reduction material; Fig.
8 is a longitudinal sectional view showing a cross section of the noise reduction material shown in Fig.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And it should be interpreted based on the technical ideas throughout the specification taking into consideration that various modifications are made.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The washing machine for securing the space of the laundry capacity and improving the noise according to the present invention is a direct driving type by combining a BLDC motor [Brush Less DC Motor] as a power transmitting means, It is possible to reduce the number of failures and failure factors.

In addition, there is an advantage that the noise accompanied by the vibration during the washing and dehydration of the washing machine can be eliminated, and the cost cost can be reduced by deleting the parts.

That is, the parts such as V - belt, motor pulley, and gear mechanism pulley, which are the power transmission means provided in the conventional washing machine, are no longer required, so that the cost reduction is achieved by omission of parts, The noise due to the vibration can be solved when the washing machine is driven.

Particularly, the washing machine according to the present invention is characterized in that the total load of the washing machine is reduced and the capacity of the laundry is increased, together with the above-mentioned features. In order to realize these features, And a power transmission assembly 100 for rotating the laundry when the laundry is washed or dewatered.

The power transmission assembly 100 includes an under case 101 and a top case 101a, a drum plate 102 and a plate 103, a shaft pulley 104, a fluid bearing 105, a coupling 106, A clutch spring 107, a boss 108, and a clutch lever 109. As shown in Fig.

The under case 101 includes a drum 102 and a plate 103 in the upper case 101a and a shaft pulley 104 corresponding to the center of the top case 101a. And a waterproof seal 101b for waterproof purpose is provided at the expansion point of the waterproof seal 101b.

13, the burring hole BH is further processed as shown in FIG. 14, and the outer diameter of the outer diameter of the outer diameter OD and the length of the joint plane portion PL and the dimensions of the length of the bearing press-fitting portion BPI are deformed together as shown in FIG. 12 with reference to FIG.

The drum 102 is mounted and fixed to the inside of the under case 101 together with the fastening of the plate 103 located at the lower part and the outer diameter is machined with the reduction of the overall length, .

The shaft pulley 104 extends axially through the center of the drum 102 and the plate 103 through the center of the top case 101a and the under case 101 so that the motor shaft 104a of the BLDC motor, And is rotated.

The shaft 103 includes a shaft 103 and a shaft 104. The shaft 103 extends from the shaft 103 and the shaft 103. The shaft 103 extends from the shaft 103, Thereby flexibly supporting the rotation of the shaft pulley 104.

The coupling 106 helps to securely couple the shaft pulley 104 to the motor shaft 104a of the BLDC motor and has a dimension OD and inner diameter ID as shown in Figures 15 and 16, To be processed.

The clutch spring 107 is wound around the outer periphery of the coupling 106 including the motor shaft 104a and extends from the end of the inner diameter ID and the inner diameter to the side The point IL is processed by deforming the dimension with respect to the protruded point IL, which means a portion for holding the clutch spring 107 in place.

The dimension of the clutch spring 107 relative to the individual thickness T and the dimension of the compression height PH corresponding to the height of the fully compressed state of the clutch spring 107 are deformed and processed. Also, care must be taken to avoid burrs (scratches in shearing) on the surface.

The boss 108 surrounds the outer circumference of the clutch spring 107 to reduce the overall length of the clutch spring 107. The boss 108 also has a deformation with respect to the diameter D of the bore excluding the gear G as shown in Fig. Processing is also done.

Of course, the boss 108 needs to be careful about burr (scratches in shearing) that may appear on the surface at the time of deformation processing, and the material is synthetic resin such as POM (Poly Oxy Methylene, polyoxymethylene or polyacetal The present invention can be applied to a precision component having excellent mechanical fatigue resistance, toughness, abrasion resistance and the like, especially mechanical parts such as gears and bearings, as compared with other materials.

Such a POM material is subjected to a process of blowing formaldehyde at a rate equal to the polymerization rate of anhydrous formaldehyde monomer because formaldehyde or trioxane is used as a raw material and polymerization conditions are required in the production method. For example, , α-polyoxymethylene was pyrolyzed to generate monomers as a vapor, and the impurities were removed through two traps held at 15 ° C. together with nitrogen gas. The liquid made from pentane and tributylamine was stirred vigorously at 25 ° C. And blowing it continuously. After 4 hours, a white particulate polymer such as snow can be obtained.

In this case, the formaldehyde monomer as a raw material requires a purity of at least 99.9% or more. For this purpose, it is appropriate to produce monomers by thermal decomposition of? -Polyoxymethylene or paraformaldehyde.

The reason why such polymerization conditions are required is that the reactivity of formaldehyde is very good and even if pure formaldehyde is left alone, the polymerization is gradually carried out to produce a white solid. There are two types of such polymerization, linear and cyclic, It is easily depolymerized and returned to the monomer. That is, in order to use POM materials for parts such as gears and bearings, heat stability is required.

On the other hand, the clutch lever 109 is a type in which power is selectively transmitted and the total electric-field height is reduced.

The shaft 101 of the power transmission assembly 100, the drum 102 and the plate 103, the shaft pulley 104, the fluid bearing 105, the coupling 106, the clutch spring 107, 108 and the clutch lever 109 is reduced as the total load of the washing machine is reduced and the overall height of the power transmission assembly constructed in the washing machine is reduced, . ≪ / RTI >

That is, the under case 101, the drum 102 and the plate 103, the shaft pulley 104, the fluid bearing 105, the coupling 106, the clutch spring 107, the boss 108, Since the overall height of the power transmission assembly 100 can be reduced and the reduced space can be ensured by assembling the power transmission assemblies 100 in combination, Thereby increasing the capacity.

The drum 102 and the plate 103 included in the power transmission assembly 100, the shaft pulley 104, the fluid bearing 105, the coupling 106, the clutch spring 107, The boss 108, and the clutch lever 109 in the exemplary dimensions.

It is to be understood, however, that the scope of the present invention is not limited to these dimensions, and various modifications may be made without departing from the scope of the present invention.

In the case of the under case 101, the total length is increased from 60.3 cm to 64.8 cm, and the burring holes are further processed at five additional positions. Particularly, in the case of the under case 101, the assembling property and the concentricity can be improved by burring hole processing without additional parts.

That is, when the axis of the shaft pulley 104 corresponding to the rotation axis and the axis of the motor shaft 104a of the BLDC motor deviate from the reference axis, the shaft is eccentrically moved. Therefore, when high rotation accuracy or high- (Noise due to vibration) can be improved by the deformation of the under case 101. [

For the sake of convenience, the drum 102 and the plate 103 have a deformed shape in which the overall length is reduced from 46.15 cm to 41.8 cm and the outer diameter is enlarged from 78.5 Ø to 80 Ø.

The shaft pulley 104 has a deformed shape obtained by enlarging the total length from 107.3 cm to 113.1 cm, reducing the length of the polishing portion from 46.45 cm to 42.1 cm, and extending the length of the serration from 22.7 cm to 31 cm.

15 and 16, the coupling 106 is formed by shrinking the overall height H from 19 cm to 16 cm and deforming the outer diameter OD, (ID), the fitting portion IL, and the individual thickness T, in addition to the deformed shape in which the compression height PH is reduced from 40 cm to 34 cm.

10, the boss 108 has a plurality of gears G on its outer circumference as shown in FIG. 10, and a plurality of gears G are formed on the outer periphery of the boss 108 as shown in FIG. ) Is reduced from 36.5 cm to 30 cm.

The clutch lever 109 has a deformed shape obtained by reducing the overall length height from 84 cm to 80 cm.

As described above, the undercarriage 101, the drum and the plates 102 and 103 (the tentative drum plate), the shaft pulley 104, the fluid bearing 105, the coupling 106, When the power transmission assembly 100 is assembled and assembled by performing the deformation of the spring 107, the boss 108, and the clutch lever 109, and the combination of these modifications is completed, It can be seen that the total height of the power transmission assembly occupying is reduced, and a space corresponding to this reduced height can be secured inside the washing machine.

Therefore, the washing machine according to the present invention can increase the capacity of laundry to be introduced into the washing machine because a space corresponding to a reduced height of the power transmission assembly is further provided inside the washing machine. Of course, there is an advantage that the load of the entire washing machine can be alleviated, and manufacturing cost can be reduced by reducing the parts, and vibration caused by washing and dewatering of the washing machine can be reduced to improve vibration noise.

The washing machine according to the present invention is characterized by a portion for preventing an impact noise such as 'perfect' noise generated in a washing machine using a conventional BLDC motor. Referring to FIG. 2, As shown in Fig. 5, the noise reduction member 110 shown in the first embodiment is further provided.

The noise reducing member 110 is a washer 112 having an elastic body 111 and is provided at two positions between the shaft pulley 104 and the fluid bearing 105 and between the shaft pulley 104 and the coupling 106 Interposed.

The reason why the washers 112 are provided at two positions between the shaft pulley 104 and the fluid bearing 105 and between the shaft pulley 104 and the coupling 106 is that the conventional washer- A vertical reciprocating motion of the rotor due to the thrust is generated during the rotation of the rotor, and the vertical reciprocating motion is transferred to the shaft pulley 104 of the gear mechanism coupled with the rotor to thereby generate an impact sound. .

In other words, as shown in FIG. 2, the vertical reciprocating motion of the rotor is transferred to the rotating shaft pulley 104 and collides with the fluid bearing 105 positioned at the lower end. In this process, noise such as an impact sound is generated. A washer 112 is interposed between the shaft pulley 104 and the fluid bearing 105 and between the shaft pulley 104 and the coupling 106 so as to prevent the same noise.

As shown in FIGS. 3 to 5, the washer 112 includes one piece of wool which covers both sides of the upper and lower surfaces. The wool is a compression-processed one, and is solid and can be handled as a kind of solid matter. For the sake of comprehension, it is known that the wool which is processed with the compressed hammer portion of the piano string is solid solid.

The wool covering the both sides of the washer 112 absorbs the collision noise between the shaft pulley 104 and the fluid bearing 105 or between the shaft pulley 104 and the coupling 106 to reduce and prevent noise such as an impact sound .

Meanwhile, the noise reducing material 110 may be a washer 112 having an elastic body 111, and may be configured in the form of a second embodiment as shown in FIGS. 6 to 8.

That is, the washer 112 is provided as a pair of plural pieces and includes the same wool as that of the first embodiment covering both sides corresponding to the upper and lower surfaces, and is interposed between the pair of washers 112 And a plurality of springs 113 that are fixed.

The plurality of springs 113 penetrate wool covering both sides of each of the pair of washers 112 so that one end of the spring is fixed to one surface of one washer 112 and the other end of the spring is fixed to the other In a manner fixed to one surface of the washer 112 of FIG.

The washer 112 is interposed between the shaft pulley 104 and the fluid bearing 105 and between the shaft pulley 104 and the coupling 106 to rotate the shaft pulley 104 in the vertical direction 113) and absorbs noise such as an impact sound with the wool.

100: power transmission assembly 101: under case
102: drum 103: plate
104: shaft pulley 105: fluid bearing
106: coupling 107: clutch spring
108: Boss 109: Clutch lever
110: Noise reduction material 111: Elastic body
112: washer 113: spring

Claims (6)

Reduction of overall height of coupling, reduction of overall height of coupling, reduction of overall height of clutch spring, reduction of overall height of boss, reduction of overall length of drum and plate, extension of overall length of undercasing, extension of overall length of drum and plate, The total power of the washing machine is reduced and the capacity of the washing machine is increased as the power transmitting assembly composed of the assembly of these parts processed by the reduction of the total length of the washing machine is built in the center of the washing machine,
The under case is in a state of protecting the gear mechanism from the outside, and the burring hole is further processed;
The drum and the plate are mounted and fixed inside the under case, and the outer diameter is enlarged;
The shaft pulleys extend the length of the serration along with the reduction of the length of the polishing portion;
The clutch spring is reduced in length of the compression height;
Wherein the boss has a bore diameter of a reduced length and is made of POM (Poly Oxy Methylene) material. delete The method according to claim 1,
Further comprising a noise reduction member interposed between the shaft pulley and the fluid bearing of the power transmission assembly and between the shaft pulley and the coupling to prevent noise such as impact noise. 4. The noise reduction device according to claim 3,
And a washer having an elastic body. 5. The method according to claim 4,
Wherein the washer comprises compressed wool joined in such a manner as to cover both the upper and lower surfaces of the washer. 5. The washing machine according to claim 4,
Wherein a plurality of shock absorbing springs are provided between the first and second shock absorbers when the first shock absorber and the second shock absorbing shock absorber are mounted on the first shock absorber.

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