CN107022879A - A kind of decelerating clutch of washing machine - Google Patents
A kind of decelerating clutch of washing machine Download PDFInfo
- Publication number
- CN107022879A CN107022879A CN201610072409.3A CN201610072409A CN107022879A CN 107022879 A CN107022879 A CN 107022879A CN 201610072409 A CN201610072409 A CN 201610072409A CN 107022879 A CN107022879 A CN 107022879A
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- China
- Prior art keywords
- ratchet
- clutch
- arm
- pawl arm
- detent mechanism
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/36—Driving arrangements for rotating the receptacle at more than one speed
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention provides a kind of decelerating clutch of washing machine, including deceleration train, housing and clutch；Described clutch is click clutch mode, including ratchet and pawl arm, in pawl arm is provided for that the ratchet for realizing washing/dehydrating is engaged/separated with ratchet；Described deceleration train is arranged in housing, and bearing block is set close to one end of upper ratchet on housing；Detent mechanism is additionally provided with described pawl arm, the outer peripheral surface of bearing block is the locating surface of detent mechanism, when detent mechanism is contacted with the outer peripheral surface of bearing block, can limit pawl arm and further move.The detent mechanism of the pawl arm of the speed-reducing clutch of the present invention is using the outer peripheral surface of the bearing block of the shell end for train of slowing down as locating surface, because the requirement on machining accuracy of bearing block is higher, easily facilitate the design of detent mechanism, ensure that pawl arm is effectively positioned, ratchet in pawl arm is avoided to produce skew in pawl arm opening and reseting procedure, so that it is guaranteed that the clutch effect of clutch.
Description
Technical field
The present invention relates to washing machine technology field, in particular it relates to a kind of decelerating clutch of washing machine.
Background technology
Decelerating clutch of washing machine is the primary drive part in automatic washing machine, and effect is to reduce the rotating speed and increase torque of motor, realizes the switching of washing and dehydration.
The important composition part that pawl arm belongs in the clutch of decelerating clutch of washing machine, in the washing condition, brake arm is in original state, ratchet incision ratchet in pawl arm, clutch is embraced spring and unclamped, motor belt motor driven input shaft slows down through planetary gear train drives impeller to rotate by output shaft again, carries out washing action；Under dewatering state, pawl arm departs from ratchet under brake arm traction, and clutch embraces spring and holds torque transmissioning shaft set and braking wheel cap tightly, makes input shaft with dehydrating shaft as an entirety, high speed single direction rotation reaches the purpose of centrifugal dehydration.
It follows that ratchet departs from the distance of ratchet when the position of pawl arm directly affects position and the dehydration of ratchet incision ratchet.Existing pawl arm is generally positioned at lower house large cylindrical, but lower house large cylindrical is common stretch process, and it is larger for assembling brake band opening, cause became uneven at large cylindrical, dimensional accuracy is not high, locating surface and two ratchet range deviations are excessive when being positioned at lower house large cylindrical simultaneously, and being easily caused detent positions in pawl arm opening and reseting procedure shifts, so as to cause clutch can not normally clutch.
In view of this, it is special to propose the present invention.
The content of the invention
In order to solve the above problems, the invention provides a kind of decelerating clutch of washing machine, specifically, following technical scheme is employed：
A kind of decelerating clutch of washing machine, including deceleration train, housing and clutch；Described clutch is click clutch mode, including ratchet and pawl arm, in pawl arm is provided for that the ratchet for realizing washing/dehydrating is engaged/separated with ratchet；Described deceleration train is arranged in housing, and bearing block is set close to one end of ratchet on housing；Detent mechanism is additionally provided with described pawl arm, the outer peripheral surface of bearing block is the locating surface of detent mechanism, when detent mechanism is contacted with the outer peripheral surface of bearing block, can limit pawl arm and further move.
Further, described clutch includes clutch and embraces spring, upper ratchet, bottom ratchet wheel and pawl arm, and upper ratchet and bottom ratchet wheel are respectively sleeved at clutch and embrace the two ends of spring and linked with it, and the first ratchet and the second ratchet are set in pawl arm, first ratchet correspondence bottom ratchet wheel, the upper ratchet of the second ratchet correspondence；The first described ratchet engages with bottom ratchet wheel, when the second ratchet engages with upper ratchet, and clutch is embraced spring and unclamped, and realizes washing, the first ratchet is separated with bottom ratchet wheel, when the second ratchet is separated with upper ratchet, and clutch is embraced spring and tightened up, and realizes dehydration；Described detent mechanism is used for restriction pawl arm after the first ratchet engaging bottom ratchet wheel, the upper ratchet of the second ratchet engaging and further moved.
Further, described pawl arm includes connecting portion and arm body, and connecting portion is fixedly mounted in rotating shaft and rotated therewith, and the free end end of arm body sets the first ratchet, the middle part of arm body sets the second ratchet, and described detent mechanism is arranged between the first ratchet and the second ratchet.
Further, described detent mechanism includes the arm body by integral forming of linking arm and locating piece, linking arm and pawl arm, and linking arm is arranged on the arm body of pawl arm close to the side of housing, locating piece sets the one end extended on the connecting arm to housing, and the inner surface of locating piece protrusion linking arm is set；Described locating piece has the locating surface contacted with the outer peripheral surface of bearing block.
Further, described linking arm extends a protrusion plane towards housing side by the arm body inside side walls of pawl arm and formed, and the upper surface of protrusion plane sets multiple reinforcements, the free end of reinforcement connection protrusion plane and the arm body outside side wall of pawl arm.
Further, described detent mechanism also includes elastic buffering pad, and elastic buffering pad is arranged on the locating surface of locating piece.
Further, described locating piece has an arc surface, and the arc surface can fit with the outer peripheral surface of bearing block, it is preferable that the central angle corresponding to the arc surface of the locating piece is 20 °~40 °.
Further, the width of described locating piece is the 1/3~2/3 of the outer ring width of bearing block, it is therefore preferable to 1/2~2/3.
Further, when described detent mechanism is contacted with the outer peripheral surface with bearing block, described ratchet is deep into depth in the tooth of ratchet and met：The tooth of 1/3 ratchet is high~3/4 ratchet tooth it is high.
Further, the first described ratchet is fixedly installed, and the second described ratchet is rotatably set；Second detent mechanism is set, and the second detent mechanism is set close to the second ratchet, the rotational angle for limiting the second ratchet in described pawl arm
, the side in the pawl arm close to bearing block extends reinforcing rib structure, and reinforcing rib structure has locating surface at the second ratchet.
The speed-reducing clutch of the present invention, detent mechanism is provided with pawl arm, detent mechanism is using the outer peripheral surface of the bearing block of the shell end for train of slowing down as locating surface, because the requirement on machining accuracy of bearing block is higher, the design of detent mechanism is easily facilitated under conditions of the determination of bearing block parameter, ensure that pawl arm can be positioned effectively, it is to avoid ratchet produces skew in pawl arm opening and reseting procedure in pawl arm, so that it is guaranteed that the clutch effect of clutch.
Brief description of the drawings
The structural representation of Fig. 1 decelerating clutch of washing machine of the present invention；
The partial sectional view of Fig. 2 decelerating clutch of washing machine of the present invention；
The front view of Fig. 3 pawl arms of the present invention；
The left view of Fig. 4 pawl arms of the present invention；
The rearview of Fig. 5 pawl arms of the present invention；
The right view of Fig. 6 pawl arms of the present invention；
The sectional view in B-B faces in Fig. 6 of Fig. 7 present invention；
The sectional view of Fig. 8 decelerating clutch of washing machine of the present invention；
The explosive view of the clutch of the washing machine of Fig. 9 present invention；
The structural representation of Figure 10 decelerating clutch of washing machine brake bands of the present invention.
Label declaration in accompanying drawing：100- belt pulleys, 200- pawl arms, 201- linking arms, the ratchets of 202- first, the ratchets of 203- second, 204- installation axles, 205- locating pieces, 206- connecting portions, 207- arm bodies, 208- fixing holes, the detent mechanisms of 209- second, 210- location divisions, 211- fixing nuts, 212- packing rings, 213- back-moving springs, 300- housings, 301- bearing blocks, 400- brake arms, the connecting shafts of 401- first, the connecting shafts of 402- second, 500- rotating shafts, 600- resetting-mechanism 700- upper end covers, 800- water seals, 900- output sleeves, 1000- output shafts, 1101- bottom ratchet wheels, spring is embraced in the upper ratchet 1200- clutches of 1102-, 1300- torque transmissioning shaft sets, 1400- input shafts, 1500- brakes wheel cap, 1600- bearings, 1700- braked wheels, 1800- brake bands, 1801- band bodies, the kinks of 1802- first, the mounting holes of 1803- first, 1804- reinforcements the first solder joints of 1805-, the solder joints of 1806- second, the solder joints of 1807- the 3rd, the kinks of 1808- second, the solder joints of the second mounting holes of 1809- 1810- the 5th, the solder joints of 1811- the 6th, the solder joints of 1812- the 4th.
Embodiment
A kind of decelerating clutch of washing machine of the present invention is described in detail below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of decelerating clutch of washing machine, including deceleration train, housing 300 and clutch；Described clutch is click clutch mode, including ratchet and pawl arm 200, in pawl arm 200 is provided for that the ratchet for realizing washing/dehydrating is engaged/separated with ratchet；Described deceleration train is arranged in housing 300, and bearing block 301 is set close to one end of ratchet on housing 300；Detent mechanism is additionally provided with described pawl arm 200, the outer peripheral surface of bearing block 301 is the locating surface of detent mechanism, when detent mechanism is contacted with the outer peripheral surface of bearing block 301, the further motion of pawl arm 200 can be limited.
The speed-reducing clutch of the present invention, detent mechanism is provided with pawl arm 200, detent mechanism is using the outer peripheral surface of the bearing block 301 of the end of housing 300 for train of slowing down as locating surface, because the requirement on machining accuracy of bearing block 301 is higher, the design of detent mechanism is easily facilitated under conditions of the determination of the parameter of bearing block 301, ensure pawl arm 200 can effectively position, it is to avoid in pawl arm 200 ratchet pawl arm 200 open and reseting procedure in produce skew, so that it is guaranteed that the clutch effect of clutch.
The positioning method of the pawl arm 200 of the present invention is suitable for the decelerating clutch of washing machine of existing use click clutch mode, including but ratchet wheel pawl type and double ratchet wheels pawl type.The present invention is further elaborated by taking the clutch of double ratchet wheels pawl type as an example below, but the present invention is not limited in the clutch of the double ratchet wheels pawl type.
As shown in Fig. 8, Fig. 9 and Fig. 2, clutch includes clutch and embraces spring 1200, upper ratchet 1102, bottom ratchet wheel 1101 and pawl arm 200, upper ratchet 1102 and bottom ratchet wheel 1101 are respectively sleeved at clutch and embrace the two ends of spring 1200 and linked with it, first ratchet 202 and the second ratchet 203 are set in pawl arm 200, first ratchet 202 correspondence bottom ratchet wheel 1101, the upper ratchet 1102 of the second ratchet 203 correspondence；The first described ratchet 202 engages with bottom ratchet wheel 1101, when the second ratchet 203 engages with upper ratchet 1102, and clutch is embraced spring 1200 and unclamped, washing is realized, the first ratchet 202 is separated with bottom ratchet wheel 1101, when the second ratchet 203 is separated with upper ratchet 1102, clutch is embraced spring 1200 and tightened up, and realizes dehydration；Described detent mechanism is used for restriction pawl arm 200 after the first ratchet 202 engaging bottom ratchet wheel 1101, the upper ratchet 1102 of the second ratchet 203 engaging and further moved.
The speed-reducing clutch of the present invention uses the clutch mode of double ratchet wheels ratchet, in the first ratchet 202 engaging bottom ratchet wheel 1101, the engaging of the second ratchet 203 after ratchet 1102, detent mechanism is in contact with the outer peripheral surface of bearing block 301, define the further motion of pawl arm 200, on the one hand, it can ensure that the stability that the first ratchet 202 engages with bottom ratchet wheel 1101, the second ratchet 203 with upper ratchet 1102, on the other hand, the further motion of pawl arm 200 can be avoided, crush injury is produced to hook tooth or ratchet.
It can thus be appreciated that, the set-up mode of detent mechanism determines that can click smoothly engage and separate, therefore, as shown in Fig. 3, Fig. 4 and Fig. 5, described pawl arm 200 includes connecting portion 206 and arm body 207, and connecting portion 206 is fixedly mounted in rotating shaft 500 and rotated therewith, and the free end end of arm body 207 sets the first ratchet 202, the middle part of arm body sets the second ratchet 203, and described detent mechanism is arranged between the first ratchet 202 and the second ratchet 203.
Detent mechanism is arranged between the first ratchet 202 and the second ratchet 203 by the present invention, be by click engage after position relationship determined, because the first ratchet 202 engages bottom ratchet wheel 1101, after the upper ratchet 1102 of second ratchet 203 engaging, part in pawl arm 200 between first ratchet 202 and the second ratchet 203 is in the state of concentric with two ratchets, the part and the distance between ratchet edge are most short, because ratchet is coaxially disposed with bearing block 301, so the distance between part in pawl arm 200 between first ratchet 202 and the second ratchet 203 and bearing block 301 are also most short.Therefore, detent mechanism is arranged between the first ratchet 202 and the second ratchet 203 by the present invention, it is easier to contacted with the outer peripheral surface of bearing block 301, realizes positioning.
There is the fixing hole 208 that rotating shaft 500 is fixedly mounted on the connecting portion 206 of the present invention.
Specifically, described detent mechanism includes linking arm 201 and locating piece 205, linking arm 201 and the arm body 207 of pawl arm 200 are integrally formed, linking arm 201 is arranged on the arm body 207 of pawl arm 200 close to the side of housing 300, locating piece 205 is arranged on the one end extended on linking arm 201 to housing 300, and the inner surface of the protrusion linking arm 201 of locating piece 205 is set；Described locating piece 205 has the locating surface contacted with the outer peripheral surface of bearing block.The decelerating clutch of washing machine of the present invention only has detent mechanism to protrusion at housing 300, and realization contacts positioning with bearing block 301, can save the material of pawl arm 200, reduce cost.
Further, described linking arm 201 extends a protrusion plane towards housing side by the arm body inside side walls of pawl arm 200 and formed, the upper surface for protruding plane sets multiple reinforcements, the free end of reinforcement connection protrusion plane and the arm body outside side wall of pawl arm.So, on the basis for ensureing the bulk strength of detent mechanism, material is reduced, manufacturing cost is reduced.
Further, described detent mechanism also includes elastic buffering pad, and elastic buffering pad is arranged on the locating surface of locating piece.Because detent mechanism is when being positioned, locating piece generally has outer peripheral surface of certain speed impacts in bearing block, therefore, and in positioning contact in an instant, the reverse impulse force by the outer peripheral surface of bearing block is larger, easily causes locating piece to fracture.The present invention can effectively slow down the impulse force of the outer peripheral surface for the bearing block that detent mechanism is subject to when being positioned by elastic buffering pad, avoid being broken between locating piece and linking arm, on the one hand the validity of positioning is ensure that, the service life of detent mechanism is on the other hand extended.
Further, described locating piece 205 has an arc surface, and the arc surface can fit with the outer peripheral surface of bearing block 301.So, it is ensured that the locating piece 205 of detent mechanism is fitted tight ness rating with the outer peripheral surface of bearing block 301, it is ensured that the stability of positioning.
Further, the central angle corresponding to the arc surface of the locating piece 205 is 20 °~40 °, it is ensured that the size of the locating surface area of locating piece 205, it is ensured that the stability of positioning.
Yet further, the width of described locating piece 205 is the 1/3~2/3 of the outer ring width of bearing block 301, it is preferable that is 1/2~2/3, further ensures that the size of the locating surface area of locating piece 205, it is ensured that the stability of positioning.
As a kind of preferred embodiment of the present invention, when described detent mechanism is contacted with the outer peripheral surface with bearing block 301, described ratchet is deep into depth in the tooth of ratchet and met：The tooth of 1/3 ratchet is high~3/4 ratchet tooth it is high.Thus it is possible, on the one hand, deeply the tooth height of at least 1/3 ratchet can ensure that the validity and stability of engaging, on the other hand, the tooth deeply less than 3/4 ratchet is high, it is ensured that pawl ratchet is smoothly detached, simultaneously, it is to avoid major injury tooth is extruded between ratchet and ratchet, it is ensured that service life.
As shown in fig. 6, the first ratchet 202 of the present invention is fixedly installed, the second described ratchet 203 is rotatably set；Second detent mechanism 209 is set, and the second detent mechanism 209 is set close to the second ratchet 203, the rotational angle for limiting the second ratchet in described pawl arm 200.Second detent mechanism 209 limits the second ratchet 203 and can only rotated toward the direction, it is ensured that the resistance to overturning of clutch.Corresponding, there is the location division 210 being engaged with the second detent mechanism 209 on the second described ratchet 203.
As shown in fig. 7, the second ratchet 203 is rotatably arranged in installation axle 204, one end of installation axle 204 is fixed on arm body 207, and the other end of installation axle 204 installs fixing nut 211 with the axial movement of spacing second ratchet 203.Back-moving spring 213 is arranged with installation axle 204 or pawl arm 200, the one end of back-moving spring 213, which is stopped, to be against on arm body 207, the other end, which stops, is against the second ratchet 203 so that the second ratchet 203 resets, it is ensured that normally engaged.
Specifically, reinforcing rib structure is extended in the side in the pawl arm 200 close to bearing block 301, and reinforcing rib structure has locating surface at the second ratchet 203.
The pawl arm 200 of the present invention is positioned on the outer peripheral surface of bearing block 301 of housing 300, because bearing block 301 is processed for precision drawing, excircle dimension precision is higher, and locating surface is in two ratchet centre positions, it can ensure that pawl arm 200 can be positioned effectively well, avoid in pawl arm 200 two detent positions pawl arm 200 open and reseting procedure in produce skew, so that it is guaranteed that the clutch effect of clutch.
Embodiment one
As shown in figure 3, the locating surface of the detent mechanism of the pawl arm 200 of the present embodiment is 13mm apart from the base plane height L1 of fixing hole 208 of pawl arm 200.As shown in Figure 4, the locating surface of the detent mechanism of pawl arm 200 be by H1 under the center line of the fixing hole 208 of pawl arm 200 be at 57mm centered on arc surface, arc radius R1 is 20.8mm, both sides angle α is 27.6 °, and be that vertical line is symmetrical at 57mm around H1 under the center line of fixing hole 208 of pawl arm 200, both sides air line distance H2 is 11.4mm, and thickness L2 is 5mm.
Embodiment two
A kind of washing machine clutch for clutch control method, described washing machine includes clutch, clutch includes clutch and embraces spring, upper ratchet, bottom ratchet wheel, the first ratchet and the second ratchet, described bottom ratchet wheel is identical with the rotation direction that spring is embraced in clutch after installing, upper ratchet embraces the oppositely oriented of spring after installing with clutch, the first described ratchet engages with bottom ratchet wheel, when second ratchet engages with upper ratchet, clutch is embraced spring and unclamped, washing is realized, the first ratchet is separated with bottom ratchet wheel, when the second ratchet is separated with upper ratchet, clutch is embraced spring and tightened up, and realizes dehydration；Described clutch for clutch control method includes：
Washing machine performs washing/rinsing program, and the first ratchet of control starts to engage with bottom ratchet wheel to be started to engage progress prior to the second ratchet and upper ratchet.
The washing machine clutch for clutch control method of the present embodiment, in washing/rinsing, the first ratchet is controlled to start to engage with bottom ratchet wheel and start to engage progress prior to the second ratchet and upper ratchet, so, the first ratchet first realizes combination with bottom ratchet wheel, it is identical with the rotation direction that spring is embraced in clutch after being installed due to bottom ratchet wheel, now, clutch embrace spring partially opened when bottom ratchet wheel is rotated, if now electric motor starting when, washing/rinsing can be achieved, clutch will not be caused to damage.
Further, washing machine perform washing/rinsing program, the first ratchet enter bottom ratchet wheel tooth in depth more than 1/5 tooth depth when, the second ratchet starts to engage with upper ratchet.Preferably, the first ratchet enter bottom ratchet wheel tooth in depth more than 1/3 tooth depth when, the second ratchet starts to engage with upper ratchet.So, it is ensured that the first ratchet completes to engage prior to the second ratchet, after the first ratchet completes to engage, even if electric motor starting, washing/rinsing can be also realized, clutch will not be caused to damage.
A kind of washing machine clutch for clutch control method of the present embodiment also includes：Washing machine performs dehydration procedure, and the second ratchet of control is initially separated with upper ratchet and is initially separated progress prior to the first ratchet and bottom ratchet wheel.
Similarly, the second ratchet is first separated with upper ratchet, and clutch embraces spring also in open mode, if now during electric motor starting, bottom ratchet wheel will not follow axis of rotation, even if the first ratchet is not separated with bottom ratchet wheel, also will not occur " beating tooth " phenomenon, clutch will not be caused to damage.
Further, washing machine performs dehydration procedure, and when tooth top of second ratchet away from upper ratchet is more than 0.5mm, the first ratchet is initially separated with bottom ratchet wheel.So, it is ensured that the second ratchet completes to separate prior to the first ratchet, after the second ratchet completes to separate, even if the first ratchet outstanding split, if electric motor starting, clutch will not be caused to damage.
Therefore, the washing machine clutch for clutch control method combination washing machine course of work and the action relationships of clutch of the present embodiment, makes clutch more stablize.
As can be seen from figures 8 and 9, the present embodiment is simultaneously there is provided a kind of decelerating clutch of washing machine, described clutch includes clutch and embraces spring 1200, upper ratchet 1102, bottom ratchet wheel 1101 and pawl arm 200, upper ratchet 1102 and bottom ratchet wheel 1101 are respectively sleeved at clutch and embrace the two ends of spring 1200 and linked with it, first ratchet 202 and the second ratchet 203 are set in pawl arm 200, first ratchet 202 correspondence bottom ratchet wheel 1101, the upper ratchet 1102 of the second ratchet 203 correspondence；The first described ratchet 202 engages with bottom ratchet wheel 1101, when the second ratchet 203 engages with upper ratchet 1102, and clutch is embraced spring 1200 and unclamped, washing is realized, the first ratchet 202 is separated with bottom ratchet wheel 1101, when the second ratchet 203 is separated with upper ratchet 1102, clutch is embraced spring 1200 and tightened up, and realizes dehydration；Relative angle between the first described ratchet 202 and the second ratchet 203 is met：Washing machine performs washing/rinsing program, and the first ratchet 202 starts to engage and starts to engage with upper ratchet 1102 prior to the second ratchet 203 with bottom ratchet wheel 1101；Washing machine performs dehydration procedure, and the second ratchet 203 is initially separated with upper ratchet 1102 and is initially separated prior to the first ratchet 202 and bottom ratchet wheel 1101.
The decelerating clutch of washing machine of the present embodiment, by the way that the first ratchet 202 and the second ratchet 203 are set into suitable angle so that：In washing/rinsing, the first ratchet 202 is controlled to start to engage with bottom ratchet wheel 1101 and start to engage progress prior to the second ratchet 203 and upper ratchet 1102, so, first ratchet 202 first realizes combination with bottom ratchet wheel 1101, identical with the rotation direction that spring 1200 is embraced in clutch after being installed due to bottom ratchet wheel 1101, now, clutch is embraced spring 1200 and partially opened when bottom ratchet wheel 1101 is rotated, if now during electric motor starting, you can realize washing/rinsing, clutch will not be caused to damage；Similarly, dehydration when, the second ratchet 203 is first separated with upper ratchet 1102, clutch embrace spring also in open mode, if now electric motor starting when, clutch will not be caused damage.
In order to which the first ratchet 202 and the second ratchet 203 realized in pawl arm 200 are engaged according to sequencing, the first described ratchet 202 has the first acting surface offseted in engaging with bottom ratchet wheel 1101, and the second ratchet 203 has the second acting surface offseted in engaging with upper ratchet 1102；Angle between the first described acting surface and the second acting surface is 135 °~165 °.
As shown in Fig. 3, Fig. 4 and Fig. 5, described pawl arm 200 includes connecting portion 206 and arm body 207, connecting portion 206 is fixedly mounted in rotating shaft 500 and rotated therewith, and the free end end of arm body 207 sets the first ratchet 202, and the middle part of arm body sets the second ratchet 203.There is the fixing hole 208 that rotating shaft 500 is fixedly mounted on the connecting portion 206 of the present invention.
As a kind of preferred embodiment of the present embodiment, the first described ratchet 202 is fixedly installed on arm body 200, and the second described ratchet 203 is elastic construction or can moved relative to arm body.
To ensure that mould molding effect and control ratchet cut the depth of ratchet, elastic claw and fixed claw matching syntype are designed as.Two ratchets incision ratchet 1/3~3/4 in an initial condition must be ensured, it is preferable that at 1/2~3/4, under dewatering state, when traction electric machine opens brake arm 400, two ratchets need to disengage ratchet, when brake arm 400 opens rated travel, ratchet need to disengage ratchet distance >=1.5mm, it is preferable that >=2mm.
First ratchet 202 of the present embodiment is fixedly installed, and the second described ratchet 203 is rotatably set；Second detent mechanism is set, and the second detent mechanism is set close to the second ratchet 203, the rotational angle for limiting the second ratchet in described pawl arm 200.Second detent mechanism limits the second ratchet 203 and can only rotated toward the direction, it is ensured that the resistance to overturning of clutch.
Second ratchet 203 is rotatably arranged in installation axle 204, installation axle 204 is integrally formed with arm body 207, back-moving spring 213 is arranged with installation axle 204, the one end of back-moving spring 213, which is stopped, to be against on arm body 207, the other end, which stops, is against the second ratchet 203, so that the second ratchet 203 resets, it is ensured that normally engaged.
Specifically, reinforcing rib structure is extended in the side in the pawl arm 200 close to bearing block 301, and reinforcing rib structure has locating surface at the second ratchet 203.
As shown in Figure 1, Figure 2, shown in Fig. 8 and Fig. 9, in the washing condition, brake arm 400 is in original state, first ratchet 202 engages with bottom ratchet wheel 1101 in pawl arm 200, second ratchet 203 engages with upper ratchet 1102, clutch is promoted to embrace the take-off the brake wheel cap 1500 of spring 1200 and torque transmissioning shaft set 1300, motor belt motor driven input shaft 1400 moves output shaft 1000 through deceleration train deceleration strip and rotated, and realizes the effect of washing/rinsing；Under dewatering state, traction electric machine pulls open brake arm 400, pawl arm 200 is accordingly opened, second ratchet 203 is separated with upper ratchet 1102, and the first ratchet 202 is separated with bottom ratchet wheel 1101, and clutch embraces spring 1200 and holds braking wheel cap 1500 and torque transmissioning shaft set 1300 tightly, simultaneously, the take-off the brake wheel 1700 of brake band 1800, makes output shaft 1000, as an entirety, realize and be dehydrated with high speed single direction rotation with output sleeve 900.
Embodiment three
As shown in Figure 10, a kind of decelerating clutch of washing machine brake band, including band body 1801, band body 1801 is flat-shaped structure, at least one end with body 1801 is arranged on brake arm 400, described one end being connected with brake arm 400 with body 1801 has a kink reversely bent, kink and with forming mounting hole between body, the free end of kink and with integrally welded structure between body.
The decelerating clutch of washing machine brake band of the present embodiment, welding will be changed to by present riveting method with body 1801 and the connection end of brake arm 400, the setting of the riveted holes of riveting need not be considered, can the end of shortened belt body 1801 to a certain extent connecting length, can the length of reinforcement 1804 on longthening belt body, avoid producing flexural deformation in brake band roll forming, and the tonicity for ensureing brake band when brake band disengages braked wheel is opened in brake arm 400.
During using riveting method, due to riveted holes open up position and size suffers from certain requirement, just can guarantee that the tightness of connection, therefore, using riveting when, connecting length is relatively large.The present embodiment is changed to welding, and by being heated by kink and with body 1801, reheating welding press connects as one it, it is to avoid riveted holes, and connecting length is shorter.
In addition, welding manner is more simple, it is more easy to realize.
Further, described kink and between body 1801 have at least three solder joints.On the one hand, it is ensured that the intensity of connection, still further aspect, it is possible to decrease technology difficulty.
Band body width at the mounting hole of the present embodiment is narrowed, the free end of kink is identical with body width, described kink and with having three solder joints between body, two solder joints are arranged on kink with mutually being existed together with body width, and band body center line both sides are symmetricly set on, another solder joint is arranged on band body width and narrows place.It is the saving installing space in order to realize that brake band is arranged on brake arm 400 that band body 1801 is narrowed at mounting hole.
The brake band of the present embodiment is applicable to one end and is fixed on housing 300, and the other end is connected to the decelerating clutch of washing machine on brake arm 400, is equally applicable to the decelerating clutch of washing machine that two ends are connected on brake arm 400.
A kind of decelerating clutch of washing machine brake band as shown in Fig. 8, Fig. 9 and Figure 10, the decelerating clutch of washing machine on brake arm 400 is connected to suitable for two ends, the described two ends of band body 1801 are separately mounted on brake arm 400, two ends with body have the kink reversely bent respectively, two ends kink forms mounting hole between band body respectively, the free end of two ends kink and with integrally welded structure between body.
Further, described one end with body is the first kink 1802, and correspondence has the first mounting hole 1803；The other end is the second kink 1808, and correspondence has the second mounting hole 1809；The first described mounting hole 1803 is arranged on the distal end on brake arm 400, and the length of the first kink 1802 is longer than the second kink 1808.The present embodiment is arranged on the design feature on brake arm 400 according to brake band, the difference that the length of the first kink 1802 and the length of the second kink 1808 are set, in order to connect.Further, because the first mounting hole 1803 is arranged on the distal end on brake arm 400, so the length of the first kink 1802 is longer than the second kink 1808.
Specifically, the first mounting hole 1803 is arranged on the first connecting shaft 401, and the second mounting hole 1809 is arranged on the second connection, and 402, second connects, and 402 are arranged on the inner side of the first connecting shaft 401.
Specifically, the first described kink 1802 and with having the first solder joint 1805, the second solder joint 1806 and the 3rd solder joint 1807 between body 1801, the first solder joint 1805 sets close to the first mounting hole 1803；Described the second kink 1808 and with having the 4th solder joint 1812, the 5th solder joint 1810 and the 6th solder joint 1811 between body 1801, the 4th solder joint 1812 is set close to the second mounting hole 1809；The distance between the first described solder joint 1805 and the first mounting hole 1803 are equal to the distance between the 4th solder joint 1812 and the second mounting hole 1809.So, to ensure the connection tightness near mounting hole.
Further, the distance between the second described solder joint 1806 and the 3rd solder joint 1807 are equal to the distance between the 5th solder joint 1810 and the 6th solder joint 1811.So, to ensure the connection tightness of kink end.
Specifically, the kink and the diameter with solder joint between body are not less than 4mm.So, with ensure welding intensity.
As a kind of preferred embodiment of the present embodiment, reinforcement 1804 is set, reinforcement 1804 is set along the center line with body on described band body, the length of reinforcement 1804 is not less than the 85% of tape body length.The brake band of the present embodiment employs the mode of welding, shorten the length of junction, the length of reinforcement 1804 can be lengthened as far as possible, avoid producing flexural deformation in brake band roll forming, and open the tonicity for ensureing brake band when brake band disengages braked wheel in brake arm 400.
The brake band of the present embodiment is used and is welded to connect, compared to riveting, save space, the length of reinforcement 1804 of brake band can be lengthened accordingly, so as to ensure brake band rigidity, avoid producing flexural deformation in brake band roll forming, and the tonicity for ensureing brake band when brake band disengages braked wheel is opened in brake arm.
The present embodiment is simultaneously there is provided a kind of decelerating clutch of washing machine with above-mentioned speed-reducing clutch brake band.
Described above is only presently preferred embodiments of the present invention, any formal limitation not is made to the present invention, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any technical staff for being familiar with this patent is without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make a little change or are modified to the equivalent embodiment of equivalent variations, in every case it is the content without departing from technical solution of the present invention, any simple modification that technical spirit according to the present invention is made to above example, equivalent variations and modification, in the range of still falling within the present invention program.
Claims (10)
1. a kind of decelerating clutch of washing machine, including deceleration train, housing and clutch；Described clutch is
Be provided for ratchet engaging/separate in click clutch mode, including ratchet and pawl arm, pawl arm realization washing/
The ratchet of dehydration；Described deceleration train is arranged in housing, and bearing block is set close to one end of ratchet on housing；It is special
Levy and be, detent mechanism is additionally provided with described pawl arm, the outer peripheral surface of bearing block is the locating surface of detent mechanism,
When detent mechanism is contacted with the outer peripheral surface of bearing block, pawl arm can be limited and further moved.
2. a kind of decelerating clutch of washing machine according to claim 1, it is characterised in that described clutch
Spring, upper ratchet, bottom ratchet wheel and pawl arm are embraced including clutch, upper ratchet and bottom ratchet wheel are respectively sleeved at the two ends that spring is embraced in clutch
And linked with it, the first ratchet and the second ratchet, the first ratchet correspondence bottom ratchet wheel, the second ratchet correspondence are set in pawl arm
Upper ratchet；The first described ratchet engages with bottom ratchet wheel, when the second ratchet engages with upper ratchet, and clutch is embraced spring and unclamped, real
Now wash, the first ratchet is separated with bottom ratchet wheel, when the second ratchet is separated with upper ratchet, clutch is embraced spring and tightened up, and realizes dehydration；
Described detent mechanism is used for restriction pawl arm after the first ratchet engaging bottom ratchet wheel, the upper ratchet of the second ratchet engaging and further transported
It is dynamic.
3. a kind of decelerating clutch of washing machine according to claim 1 or 2, it is characterised in that described ratchet
Arm includes connecting portion and arm body, and connecting portion is fixedly mounted in rotating shaft and rotated therewith, and the free end end of arm body is set
Put the first ratchet, the middle part of arm body sets the second ratchet, described detent mechanism be arranged on the first ratchet and the second ratchet it
Between.
4. a kind of decelerating clutch of washing machine according to claim 3, it is characterised in that described detent mechanism
Including linking arm and locating piece, the arm body by integral forming of linking arm and pawl arm, linking arm is arranged on the arm body of pawl arm
Close to the side of housing, locating piece sets the one end extended on the connecting arm to housing, and locating piece protrudes the inner side of linking arm
Surface is set；Described locating piece has the locating surface contacted with the outer peripheral surface of bearing block.
5. a kind of decelerating clutch of washing machine according to claim 4, it is characterised in that described linking arm by
The arm body inside side walls of pawl arm are extended a protrusion plane towards housing side and formed, and the upper surface of protrusion plane sets many
Individual reinforcement, the free end of reinforcement connection protrusion plane and the arm body outside side wall of pawl arm.
6. a kind of decelerating clutch of washing machine according to claim 4, it is characterised in that described detent mechanism
Also include elastic buffering pad, elastic buffering pad is arranged on the locating surface of locating piece.
7. a kind of decelerating clutch of washing machine according to claim 4, it is characterised in that described locating piece tool
There is an arc surface, the arc surface can fit with the outer peripheral surface of bearing block, it is preferable that the arc surface institute of the locating piece
Corresponding central angle is 20 °~40 °.
8. a kind of decelerating clutch of washing machine according to claim 4, it is characterised in that described locating piece
Width is the 1/3~2/3 of the outer ring width of bearing block, it is preferable that be 1/2~2/3.
9. a kind of decelerating clutch of washing machine according to claim 1 or 2, it is characterised in that described positioning
When mechanism is contacted with the outer peripheral surface with bearing block, described ratchet is deep into depth in the tooth of ratchet and met：1/3 ratchet
Tooth it is high~3/4 ratchet tooth it is high.
10. a kind of decelerating clutch of washing machine according to claim 2, it is characterised in that the first described ratchet
It is fixedly installed, the second described ratchet is rotatably set；Second detent mechanism is set in described pawl arm, and second determines
Position mechanism is set close to the second ratchet, the rotational angle for limiting the second ratchet；Close to bearing block in the pawl arm
Reinforcing rib structure is extended in side, and reinforcing rib structure has locating surface at the second ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072409.3A CN107022879B (en) | 2016-02-01 | 2016-02-01 | Washing machine speed reduction clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072409.3A CN107022879B (en) | 2016-02-01 | 2016-02-01 | Washing machine speed reduction clutch |
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| CN107022879A true CN107022879A (en) | 2017-08-08 |
| CN107022879B CN107022879B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610072409.3A Active CN107022879B (en) | 2016-02-01 | 2016-02-01 | Washing machine speed reduction clutch |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109322108A (en) * | 2018-10-31 | 2019-02-12 | 无锡小天鹅股份有限公司 | Roller washing machine |
| CN111118827A (en) * | 2018-10-31 | 2020-05-08 | 无锡小天鹅电器有限公司 | Brake for drum washing machine and drum washing machine |
| CN111336191A (en) * | 2019-11-29 | 2020-06-26 | 无锡小天鹅电器有限公司 | Clutch assembly and washing machine with same |
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| CN111336191B (en) * | 2019-11-29 | 2021-10-26 | 无锡小天鹅电器有限公司 | Clutch assembly and washing machine with same |
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| Publication number | Publication date |
|---|---|
| CN107022879B (en) | 2023-03-10 |
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