CN206785889U - Clutch gear ring, clutch and washing machine - Google Patents

Abstract

The utility model discloses a kind of clutch gear ring, clutch and washing machine, the clutch gear ring (20) includes gear ring body (1), the axial end of the gear ring body is formed with the multiple clutch tooths (7) being along the circumferential direction spacedly distributed, formed with clutch teeth groove (8) between two adjacent clutch tooths, and clutch tooth includes the high multiple step tooths incremented by successively of tooth, the groove bottom (801) of clutch teeth groove is formed as the horizontal stand terrace continuously to rise with the respective crest top land of multiple step tooths.In clutch gear ring of the present utility model, by the way that clutch tooth is arranged into the high multiple step tooths incremented by successively of tooth, during clutch gear ring and upper fluted disc or lower tooth disk are engaged, it is easy to clutch gear ring to be engaged with upper fluted disc or lower tooth disk, so as to realize the smooth conversion of washing machine elution operating mode.

Description

Clutch gear ring, clutch and washing machine

Technical field

The utility model belongs to household appliance technical field, in particular it relates to a kind of clutch gear ring, clutch and washing machine.

Background technology

As the improvement of people's living standards, washing machine has been a kind of more universal household electrical appliance, the life to people Bring great convenience.Wherein, the conversion equipment between the washing operating mode of washing machine and dehydration condition is more engagement type using tooth Clutch, especially in the washing machine of Large Copacity.

At present, the engagement type clutch of tooth usually contains clutch gear ring, upper fluted disc, lower tooth disk and clutch, wherein, from Close mechanism to be used to drive clutch gear ring to slide up and down, and then clutch gear ring is meshed respectively with upper fluted disc and lower tooth disk to realize Washing machine elutes the conversion of function.

Wherein, the axial both ends of clutch gear ring are rectangular formed with clutch tooth and clutch teeth groove, both radially projectings Shape, and upper fluted disc and lower tooth disk are correspondingly formed rectangular-shaped tooth and groove.Enter in clutch gear ring and upper fluted disc or lower tooth disk During row engagement, only when the rectangular-shaped clutch tooth on clutch gear ring and groove rectangular-shaped in upper fluted disc or lower tooth disk are complete When corresponding, both could successfully be engaged.In this way, be not easy to clutch gear ring and upper fluted disc or lower tooth disk be engaged with Realize the smooth conversion of washing machine elution operating mode.

Utility model content

For above-mentioned deficiency of the prior art or defect, the utility model provides a kind of clutch gear ring, clutch and washed Clothing machine, it is easy to clutch gear ring to be engaged with upper fluted disc or lower tooth disk, so as to realize the smooth conversion of washing machine elution operating mode.

To achieve the above object, the utility model provides a kind of clutch gear ring, and the clutch gear ring includes gear ring body, should The axial end of gear ring body formed with the multiple clutch tooths being along the circumferential direction spacedly distributed, adjacent two clutch tooths it Between formed with clutch teeth groove, the clutch tooth includes the high multiple step tooths incremented by successively of tooth, the groove bottom of the clutch teeth groove Be formed as the horizontal stand terrace that continuously rises with the respective crest top land of multiple step tooths.

Preferably, the multiple step tooths for forming the clutch tooth are bonded successively along the circumferencial direction, adjacent institute State between step crest top land formed with vertical stand terrace.

Preferably, the clutch tooth and each step tooth are all formed as sector, and the clutch teeth groove is sector Groove.

Preferably, the clutch tooth comprises at least first step tooth and second step tooth, and the first of the first step tooth The height and position of the groove bottom of crest top land, the second crest top land of the second step tooth and the clutch teeth groove successively decreases successively.

Preferably, not less than 1mm and it is not more than along the circumferencial direction, the minimum circumferential width of the first step tooth 2mm, tooth is high not less than 1.5mm and be not more than 2.5mm, and the circumferential minimum widith of the second step tooth is not less than 5mm and little In 5mm, tooth is high to be not less than 1.5mm and is not more than 3.5mm.

Preferably, the segment angle of the first step tooth is identical with the segment angle of the groove bottom and is described second The half of the segment angle of rank tooth.

Preferably, the segment angle of the first step tooth and the segment angle of the groove bottom are 2.5 °, the gear ring sheet The circumferencial direction of the axial end of body, which is spacedly distributed, 36 clutch tooths.

Preferably, the axial top of the gear ring body is formed with upper shoulder, axial bottom formed with lower shoulder, it is described on The respective axial end of shoulder and lower shoulder is each formed with the clutch tooth, the upper shoulder, the lower shoulder and the gear ring The external diameter of body successively decreases successively.

The utility model also proposes a kind of clutch, and the clutch includes upper fluted disc, lower tooth disk and clutch gear ring, described Clutch gear ring can be moved up and down to engage the upper fluted disc or lower tooth disk respectively, wherein the field of conjugate action of the upper fluted disc and described The field of conjugate action of lower tooth disk is each formed with the clutch tooth.

The third aspect of the present utility model also proposes a kind of washing machine, and the washing machine includes clutch.

Pass through above-mentioned technical proposal, in clutch gear ring of the present utility model, by being arranged to clutch tooth to contain height with teeth Multiple step tooths incremented by successively, the groove bottom of clutch teeth groove and the respective crest top land of multiple step tooths are formed as what is continuously risen Horizontal stand terrace, and clutch gear ring is meshed by clutch tooth and clutch teeth groove with upper fluted disc or lower tooth disk, i.e., in upper fluted disc or The groove and tooth being adapted with the clutch tooth of clutch gear ring and clutch teeth groove are correspondingly formed with lower tooth disk, now upper fluted disc or under The circumferential width of the top surface of tooth on fluted disc is less than the circumferential width of the surface opening of the clutch teeth groove in clutch gear ring, so, During clutch gear ring and upper fluted disc or lower tooth disk are engaged, the tooth on upper fluted disc or lower tooth disk be easy with into Enter in the clutch teeth groove in clutch gear ring, be easy to clutch gear ring to be engaged with upper fluted disc or lower tooth disk, and then realize washing machine Elute the smooth conversion of operating mode.

Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.

Brief description of the drawings

Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model. In accompanying drawing：

Figure 1A to Fig. 1 C is the structural representation of clutch gear ring in the prior art；

Fig. 2 is clutch gear ring of the prior art and upper fluted disc or the mesh schematic representation of lower tooth disk；

Fig. 3 is the clutch process schematic of clutch gear ring of the prior art；

Fig. 4 is the entirety sectional view of the clutch gear ring of the first preferred embodiment of the present utility model；

Fig. 5 is Fig. 4 side view；

Fig. 6 is the sectional perspective schematic diagram of the clutch tooth and clutch teeth groove in Fig. 4；

Fig. 7 is the partial top view of the clutch tooth and clutch teeth groove in Fig. 4；

Fig. 8 is clutch gear ring and upper fluted disc or the mesh schematic representation of lower tooth disk in Fig. 4；

Fig. 9 is the clutch process schematic of the clutch gear ring of the first preferred embodiment of the present utility model；

Figure 10 is the entirety sectional view of the clutch gear ring of second of preferred embodiment of the present utility model.

Description of reference numerals：

The spline part of 1 gear ring body 2

The lower shoulder of 3 upper shoulder 4

The clutch tooth of 6 lightening recesses 7

The oil storage ring of 8 clutch teeth groove 9

The clutch gear ring of 10 fluted disc 20

The second step tooth of 71 first step tooth 72

The upper shoulder bottom surface of 301 upper surface 303

The crest top land of 701 first crest top land 702 second

801 groove bottom 802' groove tooth root width

Embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can To be mutually combined.

In the utility model, in the case where not making opposite explanation, the noun of locality such as " upper and lower, top, bottom " used is generally It is each part mutual alignment either on vertical, vertical or gravity direction for direction shown in the drawings Relationship description word.

Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

At present, the conversion equipment between the washing operating mode of washing machine and dehydration condition mainly has two kinds, that is, embraces spring clutch side Formula and tooth engagement clutch mode.

Wherein, embrace spring clutch mode using click link gear drive side silk spring hold tightly and unscrew torque transmissioning shaft set come The conversion of elution operating mode is realized, in general, brake and the positive and negative rotation stopping function of interior bucket are realized by brake ribbon and unilateral bearing.It is this to rub High-capacity washing machine can not be applied to by wiping clutch mode, and complicated, and fitment stability is poor, and clutch work is unreliable, has Driving torque is small, braking moment is unstable and the problems such as brake spring easy fracture.And tooth engagement clutch mode passes through clutch Driving clutch gear ring is slid about 20 to realize the conversion of elution operating mode, and such a conversion regime, which overcomes, embraces the big of spring clutch mode Most shortcomings, suitable for large capacity and high torque washing machine.

In existing technology, the engagement type clutch of tooth generally comprises clutch gear ring 20, upper fluted disc, lower tooth disk and clutch Mechanism.Wherein, clutch tooth 7 and clutch teeth groove 8 are provided with the axial both ends of clutch gear ring 20, on upper fluted disc and lower tooth disk correspondingly The groove and tooth being adapted formed with the clutch tooth 7 and clutch teeth groove 8 with clutch gear ring 20, clutch gear ring is driven by clutch About 20 slidings, and then clutch gear ring 20 is meshed respectively with upper fluted disc and lower tooth disk to realize turning for washing machine elution function Change.

The species of clutch gear ring 20 on market today is various, but its structure typically all has following feature, referring to Figure 1A extremely Fig. 1 C, i.e., being along the circumferential direction spacedly distributed at the axial both ends of clutch gear ring 20 has multiple clutch tooths 7 and clutch teeth groove 8 (logical It is often 6 to 24), and the axis projection of clutch tooth 7 and clutch teeth groove 8 is in the footpath of fan shape, clutch tooth 7 and clutch teeth groove 8 To the rectangular shape (rectangle or its deformation) of projection.Wherein, the radially projecting of clutch tooth 7 and clutch teeth groove 8 can refer to Fig. 2.

The clutch process of clutch gear ring 20 and fluted disc 10 (i.e. upper fluted disc or lower tooth disk), reference picture 3, starts in clutch action When, clutch gear ring 20 axially moves in the presence of clutch to fluted disc 10, while exists relatively rotate between the two；Directly Contacted to clutch gear ring 20 with fluted disc 10, stop axial movement, relative rotation between the two continues to；To the phase of clutch gear ring 20 After turning over certain angle for fluted disc 10, the clutch tooth 7 on clutch gear ring 20 and the groove in fluted disc 10 are completely corresponding, clutch gear ring Clutch teeth groove 8 on 20 is also completely corresponding with the tooth in fluted disc 10, and now engagement starts；Into after engagement, clutch gear ring 20 with Mutual rotation between fluted disc 10 stops, and it is at a fully engaged to move axially to both, so far clutch terminates.

In the engagement type clutch of existing tooth, the structure design of clutch gear ring 20 has as a drawback that：

Treat that clutch gear ring 20 contacts with fluted disc 10, the relative axial movement between clutch gear ring 20 and fluted disc 10 stops, easily Impact noise；

Since being contacted with fluted disc 10 to engagement, clutch gear ring 20 needs to relatively rotate certain angle between the two with fluted disc 10 Degree, and the clutch tooth 7 only in clutch gear ring 20 and the bracket groove of fluted disc 10 completely to it is corresponding when successfully start to engage, so, The problems such as engagement is difficult and increment wears can be produced.

After beginning to be engaged, the relative rotation between clutch gear ring 20 and fluted disc 10 stops, and easily causes impact noise and tooth Damage.

Produce impact noise in existing design, during to prevent rotating, clutch tooth 7 on clutch gear ring 20 (or from Close teeth groove 8) and fluted disc 10 on take less gap to coordinate between corresponding groove (or tooth), so not only machining accuracy is wanted Ask high, nor be easy to clutch gear ring 20 to be engaged with fluted disc 10 (i.e. upper fluted disc or lower tooth disk).

Engaged in addition, entering for the ease of clutch gear ring 20 with fluted disc 10, reference picture 2, it will usually in clutch gear ring 20 Chamfering 201 ' or rounding 203 ' are set on the clutch teeth groove 8 of clutch tooth 7/, chamfering is also correspondingly provided with tooth/groove of fluted disc 10 101 ' or rounding 103 ', the feature of engagement is imported using above-mentioned chamfering or rounding as engagement, imports that feature is bigger, and engagement is more held Easily.But when engage complete when, actually played on whole tooth height carrying effect only overlap vertical straight section 202 ', 102 ', carrying effect can not be played by importing feature 101 ', 201 ' and root rounded nature (i.e. 103 ' and 203 ' in Fig. 2). Therefore, in order to meet positive engagement and reliable location, the tooth height of clutch tooth 7 need to be done higher, can so causes clutch gear ring 20 impulse strokes are elongated, in turn result in the waste on axial dimension.

In view of this, it is engaged for ease of clutch gear ring 20 and upper fluted disc or lower tooth disk, reduces engagement difficulty, reference picture 4 to Fig. 8, the utility model provides a kind of clutch gear ring 20, and the clutch gear ring 20 includes gear ring body 1, the gear ring body 1 Axial end is formed with the multiple clutch tooths 7 being along the circumferential direction spacedly distributed, formed with clutch between adjacent two clutch tooths 7 Teeth groove 8, and clutch tooth 7 includes the high multiple step tooths incremented by successively of tooth, groove bottom 801 and the multiple step tooths of clutch teeth groove 8 Respective crest top land be formed as the horizontal stand terrace continuously to rise.Further, since clutch gear ring 20 passes through clutch tooth 7 and clutch tooth Groove 8 and fluted disc 10 (i.e. upper fluted disc or lower tooth disk) are meshed, therefore, be also correspondingly formed with upper fluted disc or lower tooth disk with from Groove and tooth that the clutch tooth 7 of gear ring 20 and clutch teeth groove 8 are adapted are closed, now the week of the top surface of upper fluted disc or the tooth on lower tooth disk It is less than the circumferential width of the surface opening of the clutch teeth groove 8 in clutch gear ring 20 to width.So, in clutch gear ring 20 and upper tooth During disk or lower tooth disk are engaged, the tooth on upper fluted disc or lower tooth disk is easy with entering in clutch gear ring 20 In clutch teeth groove 8, it is easy to clutch gear ring 20 to be engaged with upper fluted disc or lower tooth disk, and then realizes the suitable of washing machine elution operating mode Smooth conversion.And in clutch gear ring 20 of the present utility model, clutch gear ring 20 engages easily with upper fluted disc or lower tooth disk, therefore, Just it is not required to set engagement to import feature on the clutch teeth groove 8 of clutch tooth 7/ of clutch gear ring 20, is reducing clutch gear ring 20 The reliability of engagement is also improved while axial height.

Specifically, the setting form of the multiple step tooths contained in clutch tooth 7 can have it is a variety of, can be form clutch tooth 7 multiple step tooths are along the circumferential direction bonded between (reference picture 4 and Fig. 6) or adjacent step tooth successively has tooth Between gap, can also be other setting forms certainly, this is no longer going to repeat them.In addition, in order to improve washing operating mode or de- Clutch teeth groove 8 and upper fluted disc or the Meshing stability of lower tooth disk, reference picture 4 and Fig. 8 during water condition, in adjacent step crest top land Between formed with vertical stand terrace.

In addition, reference picture 4 to Fig. 8, clutch tooth 7 and each step tooth should be all formed as sector, clutch teeth groove 8 also should For fan groove, can so be easy to be produced and processed on clutch gear ring 20 to form clutch tooth 7 and clutch teeth groove 8.Wherein, from Close tooth 7 and comprise at least first step tooth 71 and second step tooth 72, the first crest top land 701, the second step of first step tooth 71 Second crest top land 702 of tooth 72 and the height and position of the groove bottom 801 of clutch teeth groove 8 successively decrease successively.

Further, reference picture 4 is to Fig. 8, and along the circumferential direction, the minimum circumferential width of first step tooth 71 should be not less than 1mm and it is not more than 2mm, tooth height should be not less than 1.5mm and be not more than 2.5mm, and the circumferential minimum widith of second step tooth 72 should not Less than 5mm and it is not more than 5mm, tooth height should be not less than 1.5mm and be not more than 3.5mm.

Specifically, reference picture 6 and Fig. 7, along clutch gear ring 20 circumferencial direction circulation arrange the first crest top land 701, Second crest top land 702 and groove bottom 801, such a structure compared with prior art, can be uniform more on identical circumference Clutch tooth 7.Preferably, for reference picture 4 to Fig. 8, the segment angle of first step tooth 71 is identical with the segment angle of groove bottom 801 and is The half of the segment angle of second step tooth 72.Further, the segment angle of first step tooth 71 and the segment angle of groove bottom 801 are equal For 2.5 °, the circumferencial direction of the axial end of gear ring body 1, which is spacedly distributed, 36 clutch tooths 7, so, can be in clutch gear ring 20 Circumference on arrange 36 clutch tooths 7.In the prior art, clutch tooth 7 is identical with the segment angle of clutch teeth groove 8, i.e., in clutch In the case that the segment angle of tooth 7 is 7.5 °, the segment angle of clutch teeth groove 8 is also 7.5 °, i.e., on the circumference of clutch gear ring 20 only 24 clutch tooths 7 can be distributed.Therefore, can be (strong in the thickness at root of tooth for ensuring clutch tooth 7 according to the clutch gear ring 20 of the present embodiment Degree) it is constant on the premise of, uniform more clutch tooths 7, to increase engagement range, while can also reduce impulse noise in the circumferential Sound.

It is to be appreciated that the segment angle of first step tooth 71, second step tooth 72 and groove bottom 801 is bigger, then in clutch The quantity for the clutch tooth 7 being distributed on gear ring 20 is fewer, then the position of engagement point of clutch gear ring 20 and upper fluted disc or lower tooth disk is just Fewer, the skidding distance of between cog is also bigger both when correspondingly engaging, and makes nibbling for clutch gear ring 20 and upper fluted disc or lower tooth disk Close the abrasion that both flank of tooth are also add while time growth.Conversely, reduce first step tooth 71, second step tooth 72 and groove The segment angle of bottom surface 801, although can effectively slow down above mentioned problem, the circumferential width for clutch tooth 7 also correspondingly occur is thinning The problem of, so as to reduce dedendum strength.

In addition, the axial top of gear ring body 1, formed with upper shoulder 3, axial bottom is formed with lower shoulder 4, the He of upper shoulder 3 The respective axial end of lower shoulder 4 is each formed with clutch tooth 7, and clutch gear ring more than 20 acts on upper shoulder bottom by clutch On face 303, moved up and down with manipulating clutch gear ring 20 to complete the conversion of elution operating mode, therefore, in order to avoid in elution operating mode Clutch interferes with lower shoulder 4 or gear ring body 1 during conversion, reference picture 4 and Fig. 5, upper shoulder 3, lower shoulder 4 It should successively decrease successively with the external diameter of gear ring body 1.Wherein, clutch can be lever shift fork or spiral ring.

Specifically, reference picture 4, the through hole of axial direction is provided with the center of gear ring body 1, and the through hole is provided with and can slid up and down Spline part 2, and upper shoulder 3 and lower shoulder 4 be can around spline part 2 axle center turn round revolving body.In addition, clutch gear ring 20 Forward or reverse power is provided by drive mechanism (such as motor), i.e. drive mechanism driving output shaft rotation, the top end shaft of output shaft Portion can be inserted on the spline part 2 in clutch gear ring 20 axial slip.During washing machine elutes change working, clutch Gear ring 20 slides above and below the top axle portion of output shaft, to obtain enough spline contact length, improves both in washing operating mode Or the reliability and stability run during dehydration condition, reference picture 4, the height of the top end face of increase spline part 2, i.e. spline part 2 top end face is higher by the upper surface 301 of upper shoulder 3.

In addition, to improve stock utilization, reference picture 4 and Fig. 5, the loss of weight that annular is provided with the top surface of clutch gear ring 20 is recessed Groove 6.Specifically, lightening recesses 6 can be between spline part 2 and the upper surface 301 of upper shoulder 3, to split in upper shoulder 3 The setting unit of clutch tooth 7 and spline part 2.Certainly, the annular lightening recesses 6 can also be used to brake spring be mounted.

Further, to prevent that grease splashes when clutch gear ring 20 rotates at a high speed, reference picture 10, in the footpath of clutch tooth 7 Outside end face sets oil storage ring 9.

Specifically, to ensure the clutch tooth 7 and the accuracy of gear of the grade of spline part 2 and the stability of product on clutch gear ring 20 To enhance product performance, clutch gear ring 20 should be integrated injection molding part.Certainly, the raising of the accuracy of gear, it is also beneficial to reduce The noise that clutch gear ring 20 is sent when fluted disc in drive or lower tooth disk rotate.

According to another aspect of the present utility model, also provide a kind of clutch, the clutch include upper fluted disc, lower tooth disk and Clutch gear ring 20, clutch gear ring 20 can be moved up and down to engage upper fluted disc or lower tooth disk respectively, wherein the field of conjugate action of upper fluted disc Clutch tooth 7 is each formed with the field of conjugate action of lower tooth disk.

Specifically, clutch process is as shown in figure 9, when clutch action starts, effect of the clutch gear ring 20 in clutch It is lower to be axially moved to fluted disc 10 (i.e. upper fluted disc or lower tooth disk), while exist relatively rotate between the two；Until clutch gear ring 20 contact with fluted disc 10, stop axial movement, and relative rotation between the two continues to；To clutch gear ring 20 relative to fluted disc 10 After turning over certain angle, both grooves and tooth are corresponding, and now engagement starts；Into after engagement, clutch gear ring 20 and fluted disc 10 Mutually rotationally and axially move, until both are at a fully engaged, clutch terminates.

During the clutch of reality, reference picture 8 and Fig. 9, due to the peripheral width of first step tooth 701 on clutch gear ring 20 Degree much smaller than groove on fluted disc 10 groove tooth root width 802 ' (i.e. the axial width of surface opening), therefore, from fluted disc 10 contact to Engagement start needed for consuming time will reduce significantly, or even be likely to during clutch be not in root contact feelings Shape, caused tooth surface abrasion during clutch can be effectively reduced, also effectively reduces gearing noise.

According to the third aspect of the present utility model, a kind of washing machine is also provided, the washing machine includes clutch.

Specifically, reference picture 4, Fig. 8 and Fig. 9, when washing machine sends washing instruction, clutch gear ring 20 is in clutch Moved up under driving, and then clutch gear ring 20 is meshed with upper fluted disc, be now arranged on clutch tooth 7 on upper shoulder 3 with Corresponding clutch tooth 7 is in engagement in upper fluted disc, and brake spring is in compressive state；When washing machine sends dehydration instruction When, clutch gear ring 20 is moved down in the presence of clutch (i.e. by the gravity of clutch gear ring 20 itself and answering for brake spring Moved down in the presence of the power of position), and then completely disengage the upper shoulder 3 of clutch gear ring 20 and upper fluted disc, then on lower shoulder 4 from Close the clutch tooth 7 corresponding with lower tooth disk of tooth 7 to be meshed, the inner cylinder in washing machine is fixed with impeller by transmission system to be connected Connect, clutch completes washing to the change working of dehydration.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance In the case of shield, it can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model is to each The possible combination of kind no longer separately illustrates.

In addition, it can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.

Claims (10)

1. a kind of clutch gear ring, including gear ring body (1), the axial end of the gear ring body (1) is formed between along the circumferential direction grade Exist between multiple clutch tooths (7) of distribution, adjacent two clutch tooths (7) formed with clutch teeth groove (8), its feature Include the high multiple step tooths incremented by successively of tooth in, the clutch tooth (7), the groove bottom (801) of the clutch teeth groove (8) with it is more The respective crest top land of the individual step tooth is formed as the horizontal stand terrace continuously to rise.

2. clutch gear ring according to claim 1, it is characterised in that form multiple steps of the clutch tooth (7) Tooth is bonded successively along the circumferencial direction, formed with vertical stand terrace between the adjacent step crest top land.

3. clutch gear ring according to claim 1, it is characterised in that the clutch tooth (7) and each step tooth Sector is all formed as, the clutch teeth groove (8) is fan groove.

4. clutch gear ring according to claim 3, it is characterised in that the clutch tooth (7) comprises at least first step tooth (71) and second step tooth (72), the first crest top land (701) of the first step tooth (71), the second step tooth (72) The height and position of the groove bottom (801) of second crest top land (702) and the clutch teeth groove (8) successively decreases successively.

5. clutch gear ring according to claim 4, it is characterised in that along the circumferencial direction, the first step tooth (71) minimum circumferential width is not less than 1mm and is not more than 2mm, and tooth is high to be not less than 1.5mm and be not more than 2.5mm, and described second The circumferential minimum widith of step tooth (72) is not less than 5mm and is not more than 5mm, and tooth is high to be not less than 1.5mm and be not more than 3.5mm.

6. clutch gear ring according to claim 4, it is characterised in that the segment angle of the first step tooth (71) and described The segment angle of groove bottom (801) is identical and is the half of the segment angle of the second step tooth (72).

7. clutch gear ring according to claim 6, it is characterised in that the segment angle of the first step tooth (71) and described The segment angle of groove bottom (801) is 2.5 °, and the circumferencial direction of the axial end of the gear ring body (1) is spacedly distributed and has 36 The clutch tooth (7).

8. the clutch gear ring according to any one in claim 1~7, it is characterised in that the axle of the gear ring body (1) To top formed with upper shoulder (3), axial bottom formed with lower shoulder (4), the upper shoulder (3) and lower shoulder (4) it is respective Axial end is each formed with the clutch tooth (7), the upper shoulder (3), the lower shoulder (4) and the gear ring body (1) External diameter successively decreases successively.

9. a kind of clutch, including upper fluted disc and lower tooth disk, it is characterised in that the clutch also includes according to claim 8 Described clutch gear ring, the clutch gear ring (20) can be moved up and down to engage the upper fluted disc or the lower tooth disk respectively, The field of conjugate action of wherein described upper fluted disc and the field of conjugate action of the lower tooth disk are each formed with the clutch tooth (7).

10. a kind of washing machine, it is characterised in that the washing machine includes the clutch described in claim 9.