CN201068528Y

CN201068528Y - Low noise washing machine reducing gear

Info

Publication number: CN201068528Y
Application number: CNU2007201510045U
Authority: CN
Inventors: 刘军
Original assignee: NINGGUO JULONG INDUSTRY Co Ltd
Current assignee: NINGGUO JULONG INDUSTRY Co Ltd
Priority date: 2006-05-27
Filing date: 2007-05-06
Publication date: 2008-06-04
Anticipated expiration: 2017-05-06

Abstract

The utility model provides a low-noise washing machine speed reducer, which relates to the washing machine speed reducer technology field. The speed reducing transmission mechanism is fixed shaft transmission type, and consists of a shell body, an input shaft, a driving wheel, a driven wheel, a middle wheel, a tension wheel and an output shaft, which are connected together through double-face V-ribbed belts. The driving wheel is fixed on the input shaft; and the driven wheel is fixed on the output shaft. The middle wheel, the tension wheel and the output shaft are movably arranged on the shell body. V-ribbed grooves are arranged on the driving wheel, the driven wheel, the middle wheel and the tension wheel. The double-face V-ribbed belts are arranged on the V-ribbed grooves. The tension wheel includes two types which are fixed tension wheel and an automatic tension wheel. The low-noise washing machine speed reducer of the utility model has the advantages that the structure is simple and compact, the oil resistance and the abrasion resistance are excellent, and lubrication is not needed. The sealing structure can be simplified, the maintenance is simple and economical, the parts is fast and durable, the service life is long, the instant speed is even and steady, the transmission efficiency is high, the impaction and vibration resistance is excellent, the noise can be effectively lowered, and the working noise is not more than 50dB when operating under no-load state.

Description

A kind of low-noise decelerator for washing machine

Technical field

Technical solutions of the utility model relate to the decelerator for washing machine technical field.

Background technology

Decelerator for washing machine is the main generation part of washing machine noise.Conventional rotary drum washing machine decelerator is generally straight spur gear dead axle transmission or planetary gear transmission, is slowed down by decelerator by power shaft, and bucket rotates by the setting ratio in driving impeller or the driving simultaneously, but the transmission stability of conventional gear is poor, and noise is bigger; The bel-drivenn decelerator, though can reduce noise, but because decelerator for washing machine compact conformation, gearratio is big, power axle is vertical ground again, traditional V-belt, circular band and odontoid belt transmission are difficult to transmit stably under this condition more high-power, reach the standard-required of relevant washing machine work noise in the domestic electric washer national standard simultaneously.

The utility model content

The purpose of this utility model is: design a kind of low-noise decelerator for washing machine, replace gear drive in the conventional rotary drum washing machine decelerator and traditional belt transmission, make the washing machine stable working, reduce the washing machine work noise.Another purpose of the present utility model is a kind of two-sided polywedge bet that is used for above-mentioned low-noise decelerator for washing machine of design.

The technical solution adopted in the utility model is as follows:

A kind of low-noise decelerator for washing machine, its reduction gearing mechanism is the dead axle transmission formula, mainly form by housing 1, power shaft 2, driving wheel 3, driven pulley, breast wheel, regulating wheel and output shaft, be linked together by driving belt, driving wheel 3 is packed on the power shaft 2, driven pulley is packed on the output shaft 6, and breast wheel, regulating wheel, output shaft 6 are movably arranged on the housing 1, it is characterized in that:

A, described driving wheel 3, driven pulley 4a, 4b, breast wheel 8a, 8b, regulating wheel are provided with multiple wedge slot 13, and two-sided polywedge bet 5 is installed on the multiple wedge slot 13;

B, described regulating wheel are provided with two kinds, are respectively fixed tensioning wheel 7a and auto-tensioning wheel 7b, and fixed tensioning wheel 7a directly is movably arranged on the housing 1, and auto-tensioning wheel 7b is movably arranged on the strainer the two-sided polywedge bet 5 of the tensioning of working in coordination;

C, the minimum wrap angle sigma of described two-sided polywedge bet 5 on driving wheel 3, driven pulley 4a, 4b are not less than 140 °.

In low-noise decelerator for washing machine of the present utility model, the upper end of described power shaft 2 is also extended above decelerator, as center output shaft 6a.

The utility model also provides a kind of two-sided polywedge bet 5 that is used for above-mentioned low-noise decelerator for washing machine, it is characterized in that: described two-sided polywedge bet 5 all has the endless belt of some vertical triangle wedges up and down on the matrix of wire rope core structure flat rubber belting.

Above-mentioned two-sided polywedge bet 5, the upper and lower of its cross section are the triangle that profile of tooth is arranged, and the profile of tooth spread pattern has two kinds of upper and lower staggered and upper and lower symmetric forms.

Against existing technologies, advantage of the present utility model and beneficial effect

1, the utility model low-noise decelerator for washing machine, the instantaneous velocity uniform and stable, the transmission efficiency height, impact resisting vibrating is good.

2, the utility model low-noise decelerator for washing machine, simple in structure, compact, oil resistant, ABRASION RESISTANCE are good, need not lubricate, and can simplify hermetically-sealed construction, keep in repair easy economy, and parts are sturdy and durable, the life-span is long.

3, press the decelerator for washing machine that the utility model is made, can effectively reduce noise, turn round under Light Condition, its work noise is not more than 50dB.

4, the washing machine of the utility model decelerator is housed, stable working, impact resisting vibrating is good, noise is little, and is reliability and durability, the life-span is long, and can save time, power saving, can effectively promote the raising of washing machine total quality.

Description of drawings

Fig. 1 is the utility model low-noise decelerator for washing machine, the example structure schematic diagram of dead axle transmission formula, biasing double output shaft (incorgruous rotation) type, the two-sided polywedge bet transmission of wall scroll, and Figure 1A overlooks the transmission schematic diagram for Fig. 1's;

Fig. 2,2A are the cross sectional representation of the two-sided polywedge bet of the utility model low-noise decelerator for washing machine, and wherein Fig. 2 is staggered, and Fig. 2 A is a symmetric form;

Fig. 3,3A are the outer hoist pennants of the utility model low-noise decelerator for washing machine multiple wedge slot wheel, and wherein Fig. 3 is overall outer hoist pennants, and Fig. 3 A is the partial enlarged drawing of Fig. 3;

Accompanying drawing mean camber line arrow is represented the correlation of correlated parts direction of rotation.Figure notation in the accompanying drawing is represented respectively:

1. housing 2. power shafts 3. driving wheel 4a, 4b. driven pulley

5. two-

sided polywedge bet

6,6a. output shaft 7a. fixed tensioning wheel 7b. auto-tensioning wheel

8a, 11. extension springs of 8b. breast wheel 9. fulcrums 10. lever supports

12. steady pin 13. multiple wedge slots

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.Fig. 1, Figure 1A, be the utility model low-noise decelerator for washing machine, its reduction gearing mechanism is the dead axle transmission formula, mainly by housing 1, power shaft 2, driving wheel 3, driven pulley 4a, 4b, breast wheel 8a, 8b, fixed tensioning wheel 7a and auto-tensioning wheel 7b and

output shaft

6,6a forms, be linked together by two-sided polywedge bet 5, driving wheel 3 is packed on the power shaft 2, driven pulley 4a, 4b is packed on the output shaft 6, breast wheel 8a, 8b, output shaft 6 is movably arranged on the housing 1, driving wheel 3, driven pulley 4a, 4b, breast wheel 8a, 8b, regulating wheel 7a, 7b is provided with multiple wedge slot 13, and two-sided polywedge bet 5 is installed on the multiple wedge slot 13; Fixed tensioning wheel 7a directly is movably arranged on the housing 1, and auto-tensioning wheel 7b is movably arranged on an end of lever support 10, and the centre of lever support 10 is provided with fulcrum 9, and the other end is installed on the steady pin 12 by extension spring 11, and steady pin 12 is packed on the housing 1.Because the auto-tensioning wheel can be realized the constant tension state, can guarantee that transmission is non-slip, running steadily.Because be provided with auto-tensioning wheel 7b, two-sided polywedge bet 5 can keep tensioning state, has guaranteed the stationarity of transmission.The cornerite of two-sided polywedge bet 5 on driving wheel 3 is that α 1 is 212 °, the cornerite of two-sided polywedge bet 5 on a driven pulley 4a is that α 2 is 162 °, the cornerite of two-sided polywedge bet 5 on another driven pulley 4b is that α 3 is 230 °, these cornerites are all greater than 140 °, if cornerite is too small, because the basic rated power that every wedge transmitted is certain value, transmission efficiency can decrease like this.

Power shaft 2 upper ends reach above the decelerator, become center output shaft 6a.

Fig. 2,2A, cross sectional representation for the two-sided polywedge bet of the utility model low-noise decelerator for washing machine, the structure of two-sided polywedge bet is on the matrix of wire rope core structure flat rubber belting, the endless belt that some vertical triangle wedges are all arranged up and down, the upper and lower of its cross section is the triangle that profile of tooth is arranged, working face is a wedge surface, two kinds of rubber and polyurethanes are arranged, it has the softness of flat rubber belting, the characteristics that V-belt frictional force is big, simultaneously owing to its two-sided can engagement, so be specially adapted to the transmission of compact conformation with drive; Test shows that it is than V-belt stable drive, and transmitted power is big, the efficient height, and speed is fast, and gearratio is big, and contour dimension is little, is particularly suitable for more than the requirement V-belt radical or the transmission of wheel shaft vertical ground; Its cross section up and down triangular tooth is furnished with staggered and two kinds of symmetric forms.

Fig. 3,3A are the utility model low-noise decelerator for washing machine multiple wedge slot wheel profile schematic diagram, and wherein Fig. 3 is overall outer hoist pennants, and Fig. 3 A is the partial enlarged drawing of Fig. 3; Owing on driving wheel 3, driven pulley 4a, 4b, breast wheel 8a, 8b, fixed tensioning wheel 7a and auto-tensioning wheel 7b, all be provided with multiple wedge slot 13, the shape of multiple wedge slot 13 is corresponding with the profile of tooth of two-sided polywedge bet 5, like this, two-sided polywedge bet 5 can be well passes to driven pulley 4a, 4b reposefully with the power of driving wheel 3, make 6 of power shaft 2 and output shafts realize good deceleration transmission effect, reach the purpose that reduces noise.

Below in conjunction with accompanying drawing 1, Figure 1A the working method of low-noise decelerator for washing machine of the present utility model is briefly explained:

Power shaft 2 forward and backwards → driving wheel 3 forward and backwards → breast wheel 8a instead, just change → fixed tensioning wheel 7a instead, just change → driven pulley 4a forward and backward → breast wheel 8b instead, just change → auto-tensioning wheel 7b forward and backward → driven pulley 4b instead, just change, so just realized that two driven pulley 4a, 4b are by opposite direction rotation, the speed ratio of having got back and having needed, running is steady, and noise is little.

Claims

1. low-noise decelerator for washing machine, its reduction gearing mechanism is the dead axle transmission formula, mainly form by housing (1), power shaft (2), driving wheel (3), driven pulley, breast wheel, regulating wheel and output shaft, be linked together by driving belt, driving wheel (3) is packed on the power shaft (2), driven pulley is packed on the output shaft (6), and breast wheel, regulating wheel, output shaft (6) are movably arranged on the housing (1), it is characterized in that:

A, described driving wheel (3), driven pulley (4a, 4b), breast wheel (8a, 8b), regulating wheel are provided with multiple wedge slot (13), and two-sided polywedge bet (5) is installed on the multiple wedge slot (13);

B, described regulating wheel are provided with two kinds, be respectively fixed tensioning wheel (7a) and auto-tensioning wheel (7b), fixed tensioning wheel (7a) directly is movably arranged on the housing 1, and auto-tensioning wheel (7b) is movably arranged on the strainer the two-sided polywedge bet of the tensioning of working in coordination (5);

C, the minimum wrap angle sigma of described two-sided polywedge bet (5) on driving wheel (3), driven pulley (4a, 4b) are not less than 140 °.

2. low-noise decelerator for washing machine according to claim 1, it is characterized in that: described strainer is lever support (10), auto-tensioning wheel (7b) is installed in an end of lever support (10), the centre of lever support (10) is provided with fulcrum (9), the other end is installed on the steady pin (12) by extension spring (11), and steady pin (12) is packed on the housing (1).

3. low-noise decelerator for washing machine according to claim 1, it is characterized in that: the wrap angle sigma 1 of described two-sided polywedge bet (5) on driving wheel (3) is 212 °, the wrap angle sigma 2 of two-sided polywedge bet (5) on driven pulley 4a is 162 °, and the wrap angle sigma 3 of two-sided polywedge bet (5) on another driven pulley 4b is 230 °.

4. low-noise decelerator for washing machine according to claim 1 is characterized in that: described power shaft (2) upper end is extended above decelerator, as center output shaft (6a).