CN205529547U - Retarding clutch for washing machine - Google Patents

Abstract

The utility model provides a retarding clutch for washing machine, including the separation and reunion embrace the spring, go up the ratchet, ratchet and pawl arm down, go up ratchet and ratchet down overlap respectively establish the separation and reunion embrace the spring both ends and rather than the linkage, set up first pawl and second pawl on the pawl arm, first pawl and lower ratchet block, the second pawl is during with last ratchet block, the separation and reunion is embraced a spring and is loosened, realizes the washing, first pawl and ratchet separation down, second pawl are during with the separation of last ratchet, the separation and reunion is embraced a spring and is tightened up, realizes the dehydration, first pawl and the relative angle between the second pawl satisfy: washing machine carries out washing / rinsing procedure, and first pawl and lower ratchet are prior to second pawl and last ratchet beginning block, washing machine carries out the dehydration procedure, and the second pawl begins the separation with last ratchet prior to first pawl and lower ratchet. The utility model discloses a retarding clutch for washing machine can satisfy at pawl arm rotation in -process, and first pawl " goes into afterwards to go out earlier ", ensures clutching mechanism's overall stability.

Description

A kind of decelerating clutch of washing machine

Technical field

This utility model relates to washing machine technology field, in particular it relates to a kind of decelerating clutch of washing machine.

Background technology

Clutch structure belongs to decelerating clutch of washing machine core, and clutch realizes washing machine from washing under not stopped status Wash the mutually conversion with dewatering state and rely primarily on clutch.Clutch includes pawl arm, brake arm, ratchet and spine Pawl.Generally we use the clutch structure of single ratchet, ratchet, and pawl arm is fastenedly connected with ratchet, ratchet and ratchet driving Connecting, ratchet and clutch are embraced spring and are in transmission connection.

Single ratchet, spring one end is embraced in the clutch of clutch structure of ratchet 2 circle collars, and the other end has radially the end of a thread, is embedded in spine In the radial slot of wheel.When washing, the ratchet in pawl arm blocks ratchet, and it is released that spring is embraced in clutch, during dehydration, and ratchet Ratchet on arm disengages ratchet, and clutch is embraced spring and held braking wheel cap and torque transmissioning shaft set tightly.This kind of clutch structure is applicable to have unidirectional The clutch of bearing, as without unilateral bearing, when washing, due to the transfer of interior bucket, can effectively block spine for guarantee ratchet Wheel, it is ensured that the releasing orientation of spring is embraced in clutch, need to use more effective clutch structure.

And using the clutch structure of double ratchet wheels ratchet is a kind of effectively solution bucket transfer phenomenon when not using unilateral bearing The method that clutch structure is caused damage.The clutch structure of existing double ratchet wheels ratchet, two ratchets are typically all and block simultaneously Close and concurrently separate, this mode, when washing machine normally works, any problem will not be produced, but, if occurring The action of clutch structure is not fully finished, and when motor is just started working, is likely to result in the damage of clutch.

In view of this, special proposition this utility model.

Utility model content

In order to solve the problems referred to above, the first utility model purpose of the present utility model is to provide a kind of washing machine clutch for clutch control side Method, specifically, have employed following technical scheme:

A kind of washing machine clutch for clutch control method, described washing machine include clutch, clutch include clutch embrace spring, Upper ratchet, bottom ratchet wheel, the first ratchet and the second ratchet, the rotation direction embracing spring after described bottom ratchet wheel installation with clutch is identical, Upper ratchet embraces the oppositely oriented of spring with clutch after installing, and the first described ratchet engages with bottom ratchet wheel, the second ratchet and upper spine During wheel engaging, clutch is embraced spring and is unclamped, it is achieved washing, the first ratchet separates with bottom ratchet wheel, and the second ratchet separates with upper ratchet Time, clutch is embraced spring and is tightened up, it is achieved dehydration；Described clutch for clutch control method includes:

Washing machine performs washing/rinsing program, controls the first ratchet and starts with bottom ratchet wheel to engage prior to the second ratchet and upper ratchet Start engaging to carry out.

Further, washing machine performs washing/rinsing program, and in the tooth of the first ratchet entrance bottom ratchet wheel, the degree of depth is more than 1/5 tooth Time deep, it is preferable that during more than 1/3 tooth depth, the second ratchet starts to engage with upper ratchet.

Further, described clutch for clutch control method also includes:

Washing machine performs dehydration procedure, controls the second ratchet and is initially separated with upper ratchet and starts with bottom ratchet wheel prior to the first ratchet Separation is carried out.

Further, washing machine performs dehydration procedure, the second ratchet away from the tooth top of upper ratchet more than 0.5mm time, the One ratchet is initially separated with bottom ratchet wheel.

Second utility model purpose of the present utility model is to provide a kind of decelerating clutch of washing machine, specifically, uses as follows Technical scheme:

A kind of decelerating clutch of washing machine, described clutch includes that spring, upper ratchet, bottom ratchet wheel and pawl arm are embraced in clutch, Upper ratchet and bottom ratchet wheel are respectively sleeved at clutch and embrace the two ends of spring and link with it, and pawl arm arranges the first ratchet and second Ratchet, the first ratchet correspondence bottom ratchet wheel, ratchet in the second ratchet correspondence；The first described ratchet engages with bottom ratchet wheel, the When two ratchets engage with upper ratchet, clutch is embraced spring and is unclamped, it is achieved washing, the first ratchet separates with bottom ratchet wheel, the second ratchet When separating with upper ratchet, clutch is embraced spring and is tightened up, it is achieved dehydration；Relative angle between the first described ratchet and the second ratchet Degree meets: washing machine performs washing/rinsing program, and the first ratchet starts with bottom ratchet wheel to engage prior to the second ratchet and upper ratchet Start engaging；Washing machine performs dehydration procedure, and the second ratchet is initially separated with upper ratchet and opens with bottom ratchet wheel prior to the first ratchet Begin to separate.

Further, the first described ratchet has the first acting surface offseted when engaging, the second ratchet tool with bottom ratchet wheel There is the second acting surface offseted when engaging with upper ratchet；Angle between the first described acting surface and the second acting surface is 135 °～165 °.

Further, described pawl arm includes connecting portion and arm body, and connecting portion is fixedly mounted in rotating shaft and therewith Rotating, the free end end of arm body arranges the first ratchet, and the middle part of arm body arranges the second ratchet.

Further, the first described ratchet is fixedly installed on arm body, and the second described ratchet is elastic construction or can Move relative to arm body.

Further, the second described ratchet is spindle rotationally arranged on arm body, when the direction of the second pawl rotation and dehydration Upper pawl wheel in opposite direction.

Further, deceleration train and housing are also included；Described deceleration train is arranged in housing, near upper on housing One end of ratchet arranges bearing block；Being additionally provided with detent mechanism in described pawl arm, the outer peripheral surface of bearing block is location The locating surface of mechanism, when detent mechanism contacts with the outer peripheral surface of bearing block, can limit pawl arm and move further.

Washing machine clutch for clutch control method of the present utility model, when washing/rinsing, controls the first ratchet and starts card with bottom ratchet wheel Closing to start to engage with upper ratchet prior to the second ratchet and carry out, so, the first ratchet first realizes combination with bottom ratchet wheel, due under The rotation direction embracing spring after ratchet installation with clutch is identical, and now, clutch is embraced spring and partially opened when bottom ratchet wheel rotates, this If time electric motor starting time, can realize washing/rinsing, clutch will not be caused damage.

In like manner, when dehydration, the second ratchet first separates with upper ratchet, and clutch embraces spring also in open mode, if now electricity When machine starts, spring is embraced in clutch will not follow axis of rotation, even if the first ratchet does not separates with bottom ratchet wheel, also will not occur " to beat Tooth " phenomenon, will not cause damage to clutch.

Therefore, washing machine clutch for clutch control method of the present utility model combines the action pass of washing machine work process and clutch System, makes clutch more stable.

First ratchet and the arranging of the second ratchet of decelerating clutch of washing machine of the present utility model can meet in pawl arm In rotation process, the first ratchet " first enters to go out afterwards ", it is ensured that the stability in the large of clutch.

Accompanying drawing explanation

The structural representation of Fig. 1 this utility model decelerating clutch of washing machine；

The partial sectional view of Fig. 2 this utility model decelerating clutch of washing machine；

The front view of Fig. 3 this utility model pawl arm；

The left view of Fig. 4 this utility model pawl arm；

The rearview of Fig. 5 this utility model pawl arm；

The right view of Fig. 6 this utility model pawl arm；

The sectional view in B-B face in Fig. 7 Fig. 6 of the present utility model；

The sectional view of Fig. 8 this utility model decelerating clutch of washing machine；

The explosive view of the clutch of Fig. 9 washing machine of the present utility model；

The structural representation of Figure 10 this utility model decelerating clutch of washing machine brake band.

Label declaration in accompanying drawing: 100-belt pulley 200-pawl arm 201-linking arm 202-the first ratchet 203- Second ratchet 204-installs axle 205-locating piece 206-connecting portion 207-arm body 208-fixing hole 209-second Detent mechanism 210-location division 211-fixes nut 212-packing ring 213-back-moving spring 300-housing 301-axle Bearing 400-brake arm 401-the first connecting shaft 402-the second connecting shaft 500-rotating shaft 600-resetting-mechanism Ratchet on 700-upper end cover 800-water seal 900-output sleeve 1000-output shaft 1101-bottom ratchet wheel 1102- 1200-clutch is embraced spring 1300-torque transmissioning shaft set 1400-power shaft 1500-and is braked wheel cap 1600-bearing 1700-system Driving wheel 1800-brake band 1801-belt body 1802-the first kink 1803-the first installing hole 1804-reinforcement 1805-the first solder joint 1806-the second solder joint 1807-the 3rd solder joint 1808-the second kink 1809-the second installing hole 1810-the 5th solder joint 1811-the 6th solder joint 1812-the 4th solder joint.

Detailed description of the invention

Below in conjunction with the accompanying drawings a kind of washing machine clutch for clutch control method of the present utility model and speed-reducing clutch are retouched in detail State:

A kind of washing machine clutch for clutch control method, described washing machine include clutch, clutch include clutch embrace spring, Upper ratchet, bottom ratchet wheel, the first ratchet and the second ratchet, the rotation direction embracing spring after described bottom ratchet wheel installation with clutch is identical, Upper ratchet embraces the oppositely oriented of spring with clutch after installing, and the first described ratchet engages with bottom ratchet wheel, the second ratchet and upper spine During wheel engaging, clutch is embraced spring and is unclamped, it is achieved washing, the first ratchet separates with bottom ratchet wheel, and the second ratchet separates with upper ratchet Time, clutch is embraced spring and is tightened up, it is achieved dehydration；Described clutch for clutch control method includes:

Washing machine performs washing/rinsing program, controls the first ratchet and starts with bottom ratchet wheel to engage prior to the second ratchet and upper ratchet Start engaging to carry out.

Washing machine clutch for clutch control method of the present utility model, when washing/rinsing, controls the first ratchet and starts card with bottom ratchet wheel Closing to start to engage with upper ratchet prior to the second ratchet and carry out, so, the first ratchet first realizes combination with bottom ratchet wheel, due under The rotation direction embracing spring after ratchet installation with clutch is identical, and now, clutch is embraced spring and partially opened when bottom ratchet wheel rotates, this If time electric motor starting time, can realize washing/rinsing, clutch will not be caused damage.

Further, washing machine performs washing/rinsing program, and in the tooth of the first ratchet entrance bottom ratchet wheel, the degree of depth is more than 1/5 tooth Time deep, the second ratchet starts to engage with upper ratchet.Preferably, first ratchet enter bottom ratchet wheel tooth in the degree of depth more than 1/3 During tooth depth, the second ratchet starts to engage with upper ratchet.So, it is ensured that the first ratchet completes engaging prior to the second ratchet, After the first ratchet completes engaging, though electric motor starting, it is possible to realize washing/rinsing, clutch will not be caused damage.

A kind of washing machine clutch for clutch control method of the present utility model also includes: washing machine performs dehydration procedure, controls the second spine Pawl and upper ratchet are initially separated to be initially separated prior to the first ratchet and bottom ratchet wheel and carry out.

In like manner, the second ratchet first separates with upper ratchet, and clutch embraces spring also in open mode, if now electric motor starting time, Spring is embraced in clutch will not follow axis of rotation, even if the first ratchet does not separates with bottom ratchet wheel, " beating tooth " phenomenon also will not occur, Clutch will not be caused damage.

Further, washing machine performs dehydration procedure, the second ratchet away from the tooth top of upper ratchet more than 0.5mm time, the One ratchet is initially separated with bottom ratchet wheel.So, it is ensured that the second ratchet completes to separate, when the second ratchet prior to the first ratchet After completing to separate, even if the first ratchet outstanding split, if electric motor starting, clutch will not be caused damage.

Therefore, washing machine clutch for clutch control method of the present utility model combines the action pass of washing machine work process and clutch System, makes clutch more stable.

As can be seen from figures 8 and 9, this utility model provides a kind of decelerating clutch of washing machine, described clutch simultaneously Structure includes that spring 1200, upper ratchet 1102, bottom ratchet wheel 1101 and pawl arm 200, upper ratchet 1102 and bottom ratchet wheel are embraced in clutch 1101 are respectively sleeved at clutch embraces the two ends of spring 1200 and links with it, and pawl arm 200 arranges the first ratchet 202 He Second ratchet 203, the corresponding bottom ratchet wheel 1101 of the first ratchet 202, the corresponding upper ratchet 1102 of the second ratchet 203；Described First ratchet 202 engages with bottom ratchet wheel 1101, and when the second ratchet 203 engages with upper ratchet 1102, spring 1200 is embraced in clutch Unclamp, it is achieved washing, the first ratchet 202 separates with bottom ratchet wheel 1101, and the second ratchet 203 separates with upper ratchet 1102 Time, clutch is embraced spring 1200 and is tightened up, it is achieved dehydration；Relative between described the first ratchet 202 and the second ratchet 203 Angle meets: washing machine performs washing/rinsing program, and the first ratchet 202 starts to engage prior to second with bottom ratchet wheel 1101 Ratchet 203 starts to engage with upper ratchet 1102；Washing machine performs dehydration procedure, the second ratchet 203 and upper ratchet 1102 It is initially separated and is initially separated with bottom ratchet wheel 1101 prior to the first ratchet 202.

Decelerating clutch of washing machine of the present utility model, by arranging the first ratchet 202 and the second ratchet 203 suitably Angle so that: when washing/rinsing, control the first ratchet 202 and start to engage prior to the second ratchet with bottom ratchet wheel 1101 203 start to engage with upper ratchet 1102 and carry out, and so, the first ratchet 202 first realizes with bottom ratchet wheel 1101 combining, by The rotation direction embracing spring 1200 after bottom ratchet wheel 1101 is installed with clutch is identical, and now, clutch embraces spring 1200 at bottom ratchet wheel 1101 Partially opened during rotation, if now electric motor starting time, can realize washing/rinsing, clutch will not be caused damage Bad；In like manner, when dehydration, the second ratchet 203 first separates with upper ratchet 1102, and clutch embraces spring also in open mode, If now during electric motor starting, clutch will not be caused damage.

Engage according to sequencing to realize the first ratchet 202 in pawl arm 200 and the second ratchet 203, institute The first ratchet 202 stated has the first acting surface offseted when engaging with bottom ratchet wheel 1101, and the second ratchet 203 has The second acting surface offseted with upper ratchet 1102 when engaging；Folder between the first described acting surface and the second acting surface Angle 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 are fixedly mounted in rotating shaft 500 and rotate therewith, and the free end end of arm body 207 arranges the first ratchet 202, The middle part of arm body arranges the second ratchet 203.There is on connecting portion 206 of the present utility model consolidating of fixed installation rotating shaft 500 Determine hole 208.

As a kind of preferred implementation of the present utility model, the first described ratchet 202 is fixedly installed on arm body 200, The second described ratchet 203 is elastic construction or can move relative to arm body.

For ensureing mould molding effect and controlling the degree of depth of ratchet incision ratchet, it is designed as elastic claw and fixed claw and matches matched moulds Formula.Two ratchet incision ratchet 1/3～3/4 in an initial condition must be ensured, it is preferable that be at 1/2～3/4, at dewatering state Under, when brake arm 400 opened by traction electric machine, 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 utility model is fixedly installed, the second described rotating setting of ratchet 203；Described Arranging the second detent mechanism in pawl arm 200, the second detent mechanism is arranged near the second ratchet 203, for restriction second The rotational angle of ratchet.Second detent mechanism limits the second ratchet 203 and can only rotate toward the direction, it is ensured that clutch The stability in the large of structure.

Second ratchet 203 is rotating to be arranged on installation axle 204, installs axle 204 one-body molded with arm body 207, peace Being arranged with back-moving spring 213 on dress axle 204, back-moving spring 213 one end is only against on arm body 207, and the other end is only against Second ratchet 203 so that the second ratchet 203 resets, it is ensured that normally engage.

Specifically, in described pawl arm 200, reinforcing rib structure, reinforcing rib structure are extended in the side of close bearing block 301 At the second ratchet 203, there is locating surface.

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, ratchet On arm 200, the first ratchet 202 engages with bottom ratchet wheel 1101, and the second ratchet 203 engages with upper ratchet 1102, promote from Spring 1200 take-off the brake wheel cap 1500 of filling the span of a man's arms overlaps 1300 with torque transmissioning shaft, and driven by motor power shaft 1400 subtracts through deceleration train Speed belt moves output shaft 1000 and rotates, it is achieved the effect of washing/rinsing；Under dewatering state, traction electric machine pulls open brake arm 400, pawl arm 200 is opened accordingly, and the second ratchet 203 separates with upper ratchet 1102, the first ratchet 202 and lower spine Wheel 1101 separation, clutch is embraced spring 1200 and is held braking wheel cap 1500 and torque transmissioning shaft set 1300, meanwhile, brake band 1800 tightly Take-off the brake wheel 1700, makes output shaft 1000 and output sleeve 900 as an entirety, realizes with high speed single direction rotation Dehydration.

Embodiment one

As it is shown in figure 1, a kind of decelerating clutch of washing machine, including deceleration train, housing 300 and clutch；Described Clutch be click clutch mode, including ratchet and pawl arm 200, pawl arm 200 is provided for and spine Wheel engaging/separate the ratchet realizing washing/dehydrating；Described deceleration train is arranged in housing 300, and housing 300 leans on One end of nearly ratchet arranges bearing block 301；Detent mechanism it is additionally provided with in described pawl arm 200, bearing block 301 Outer peripheral surface is the locating surface of detent mechanism, when detent mechanism contacts with the outer peripheral surface of bearing block 301, can limit ratchet Arm 200 moves further.

The speed-reducing clutch of the present embodiment, pawl arm 200 is provided with detent mechanism, and detent mechanism is with the shell of deceleration train The outer peripheral surface of the bearing block 301 of body 300 end is locating surface, owing to the requirement on machining accuracy of bearing block 301 is higher, The design of detent mechanism is easily facilitated, it is ensured that pawl arm 200 can effectively position under conditions of bearing block 301 parameter determination, Avoid in pawl arm 200 ratchet open in pawl arm 200 and reseting procedure produces skew, so that it is guaranteed that clutch from Close effect.

The location mode of pawl arm 200 of the present utility model is suitable for the washing machine of existing employing click clutch mode Speed-reducing clutch, including single ratchet wheel pawl type and double ratchet wheels pawl type.The present embodiment is with double ratchet wheels pawl type below It is further elaborated as a example by clutch, but the present embodiment is not limited in the clutch of this double ratchet wheels pawl type.

As shown in Fig. 8, Fig. 9 and Fig. 2, clutch includes that spring 1200, upper ratchet 1102, bottom ratchet wheel 1101 are embraced in clutch With pawl arm 200, upper ratchet 1102 and bottom ratchet wheel 1101 be respectively sleeved at clutch and embrace the two ends of spring 1200 and link with it, First ratchet 202 and the second ratchet 203 is set in pawl arm 200, the corresponding bottom ratchet wheel 1101 of the first ratchet 202, second The corresponding upper ratchet 1102 of ratchet 203；The first described ratchet 202 engages with bottom ratchet wheel 1101, the second ratchet 203 with When upper ratchet 1102 engages, clutch is embraced spring 1200 and is unclamped, it is achieved washing, the first ratchet 202 and bottom ratchet wheel 1101 points From, when the second ratchet 203 separates with upper ratchet 1102, clutch is embraced spring 1200 and is tightened up, it is achieved dehydration；Described location Mechanism engages bottom ratchet wheel the 1101, second ratchet 203 card for the first ratchet 202 and closes and limit pawl arm after ratchet 1102 200 move further.

The speed-reducing clutch of the present embodiment uses the clutch mode of double ratchet wheels ratchet, engages bottom ratchet wheel at the first ratchet 202 1101, after the second ratchet 203 card closes ratchet 1102, detent mechanism contacts with the outer peripheral surface of bearing block 301, Define the further motion of pawl arm 200, on the one hand, can ensure that the first ratchet 202 and bottom ratchet wheel the 1101, second spine The stability that pawl 203 engages with upper ratchet 1102, on the other hand, can avoid pawl arm 200 to move further, to spine The gear teeth or ratchet produce crush injury.

Can engage it follows that the set-up mode of detent mechanism determines click smoothly 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 solid Dingan County is contained in rotating shaft 500 and rotates therewith, and the free end end of arm body 207 arranges the first ratchet 202, arm body Middle part the second ratchet 203 is set, 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 embodiment, is to be engaged by click After position relationship determined, because the first ratchet 202 engages bottom ratchet wheel the 1101, second ratchet 203 card and closes ratchet After 1102, in pawl arm 200, the part between the first ratchet 202 and the second ratchet 203 is in concentric with two ratchets State, the distance between this part and ratchet edge is the shortest, owing to ratchet is coaxially disposed with bearing block 301, so spine On pawl arm 200, the distance between part and bearing block 301 between the first ratchet 202 and the second ratchet 203 is also the shortest. Therefore, detent mechanism is arranged between the first ratchet 202 and the second ratchet 203 by the present embodiment, it is easier to bearing block The outer peripheral surface contact of 301, it is achieved location.

There is on the connecting portion 206 of the present embodiment the fixing hole 208 of fixed installation rotating shaft 500.

Specifically, described detent mechanism includes linking arm 201 and locating piece 205, linking arm 201 and pawl arm 200 Arm body 207 one-body molded, linking arm 201 is arranged on the arm body 207 of pawl arm 200 side near housing 300, Locating piece 205 is arranged on linking arm 201 one end extended to housing 300, and locating piece 205 protrudes linking arm 201 Inner surface is arranged；Described locating piece 205 has the locating surface that the outer peripheral surface with bearing block contacts.The present embodiment Decelerating clutch of washing machine only has detent mechanism to protrude at housing 300, it is achieved contacts location with bearing block 301, can save Save the material of pawl arm 200, reduce cost.

Further, described linking arm 201 is extended one by the arm body inside side walls of pawl arm 200 towards housing side Protrusion plane is formed, and the upper surface protruding plane arranges multiple reinforcement, and reinforcement connects free end and the spine protruding plane The arm body outside side wall of pawl arm.So, on the basis of bulk strength ensureing detent mechanism, reduce material, reduce Manufacturing cost.

Further, described detent mechanism also includes elastic buffering pad, and elastic buffering pad is arranged on the locating surface of locating piece On.Owing to detent mechanism is when positioning, locating piece is generally of certain speed impacts outer peripheral surface at bearing block, Therefore, in location contact in an instant, relatively big by the reverse impulse force of the outer peripheral surface of bearing block, easily cause locating piece Fracture.This utility model can effectively slow down, by elastic buffering pad, bearing block that detent mechanism is subject to when positioning The impulse force of outer peripheral surface, it is to avoid rupture between locating piece and linking arm, on the one hand ensure that the effectiveness of location, the opposing party Face extends the service life of detent mechanism.

Further, described locating piece 205 has an arc surface, and this arc surface can be with the outer peripheral surface of bearing block 301 Fit.So, it is ensured that the locating piece 205 of detent mechanism and the outer peripheral surface laminating compactness of bearing block 301, protect The stability of card location.

Further, the central angle corresponding to arc surface of described locating piece 205 is 20 °～40 °, it is ensured that locating piece 205 The size of locating surface area, it is ensured that the stability of location.

Yet further, the width of described locating piece 205 is the 1/3～2/3 of the outer ring width of bearing block 301, preferably Ground, 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 location.

As a kind of preferred implementation of the present embodiment, described detent mechanism connects with the outer peripheral surface with bearing block 301 When touching, in described ratchet is deep into the tooth of ratchet, the degree of depth meets: the tooth depth of 1/3 ratchet～the tooth depth of 3/4 ratchet.So, On the one hand, deeply the tooth depth of at least 1/3 ratchet can ensure that effectiveness and the stability of engaging, on the other hand, is deeply less than The tooth depth of 3/4 ratchet, it is ensured that being smoothly detached of pawl ratchet, simultaneously, it is to avoid between ratchet and ratchet, extrude major injury Tooth, it is ensured that service life.

As shown in Figure 6, first ratchet 202 of the present embodiment is fixedly installed, and the second described ratchet 203 is rotating to be set Put；Arranging the second detent mechanism 209 in described pawl arm 200, the second detent mechanism 209 is near the second ratchet 203 Arrange, for limiting the rotational angle of the second ratchet 203.Second detent mechanism 209 limits the second ratchet 203 can only court A direction to rotate, it is ensured that the stability in the large of clutch.Corresponding, the second described ratchet 203 has There is the location division 210 matched with the second detent mechanism 209.

Being arranged on installation axle 204 as it is shown in fig. 7, the second ratchet 203 is rotating, the one end installing axle 204 is fixed On arm body 207, the other end installing axle 204 installs fixing nut 211 moving axially with spacing second ratchet 203. Installing and be arranged with back-moving spring 213 in axle 204 or pawl arm 200, back-moving spring 213 one end is only against arm body 207 On, the other end is only against the second ratchet 203 so that the second ratchet 203 resets, it is ensured that normally engage.Specifically, In described pawl arm 200, reinforcing rib structure is extended in the side near bearing block 301, and reinforcing rib structure is near the second ratchet There is at 203 locating surface.

The pawl arm 200 of the present embodiment is positioned on the outer peripheral surface of bearing block 301 of housing 300, due to bearing block 301 Processing for precision drawing, excircle dimension precision is higher, and locating surface is in two ratchet centre positions, can ensure spine well Pawl arm 200 can effectively position, it is to avoid in pawl arm 200, two detent positions are opened in pawl arm 200 and produced in reseting procedure Raw skew, so that it is guaranteed that the clutch effect of clutch.

Embodiment two

As it is shown on figure 3, the fixing hole of the locating surface distance pawl arm 200 of the detent mechanism of the pawl arm 200 of the present embodiment 208 base plane height L1 are 13mm.As shown in Figure 4, the locating surface of the detent mechanism of pawl arm 200 is with ratchet Arc surface centered by H1 is at 57mm under the centrage of arm 200 fixing hole 208, arc radius R1 is 20.8mm, Both sides angle α is 27.6 °, and H1 is that at 57mm, vertical line is symmetrical under fixing hole 208 centrage of pawl arm 200, Both sides air line distance H2 is 11.4mm, and thickness L2 is 5mm.

Embodiment three

As shown in Figure 10, a kind of decelerating clutch of washing machine brake band, including belt body 1801, belt body 1801 is flat strips Shape structure, at least one end of belt body 1801 is arranged on brake arm 400, and described belt body 1801 is connected with brake arm 400 The one end connect has the kink of reversely bending, forms installing hole, the free end of kink and band between kink and belt body Integrally welded structure between body.

The decelerating clutch of washing machine brake band of the present embodiment, is connected end by present by belt body 1801 with brake arm 400 Riveting method changes welding into, it is not necessary to considers the setting of the riveted holes of riveting, can shorten belt body 1801 end to a certain extent The connecting length in portion, can lengthen reinforcement 1804 length on belt body, avoids producing bending when brake band roll forming and becomes Shape, and open the Zhang Du of guarantee brake band when brake band disengages braked wheel at brake arm 400.

When using riveting method, due to riveted holes offer position and size suffers from certain requirement, guarantee is even The tightness connect, therefore, when using riveting, connecting length is relatively large.The present embodiment is changed into welding, by inciting somebody to action Kink and belt body 1801 heat, reheating welding press so that it is connect as one, it is to avoid riveted holes, connecting length Shorter.

It addition, welding manner is more simple, it is more easy to realize.

Further, there is between described kink and belt body 1801 at least three solder joint.On the one hand, it is ensured that even The intensity connect, still further aspect, it is possible to decrease technology difficulty.

Belt body width at the installing hole of the present embodiment narrows, and the free end of kink is identical with belt body width, and described is curved Having three solder joints between folding part and belt body, two solder joints are arranged on kink and exist together mutually with belt body width, and are symmetrical arranged In belt body centrage both sides, another solder joint is arranged on belt body width and narrows place.Belt body 1801 narrows at installing hole It is arranged on brake arm 400 to realize brake band, saves installing space.

The brake band of the present embodiment is applicable to one end and is fixed on housing 300, and the other end is connected on brake arm 400 Decelerating clutch of washing machine, it is possible to be 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, it is adaptable to two ends are connected to Decelerating clutch of washing machine on brake arm 400, described belt body 1801 two ends are separately mounted on brake arm 400, The two ends of belt body are respectively provided with the kink of reversely bending, and two ends kink respectively and forms installing hole, two ends between belt body Integrally welded structure between free end and the belt body of kink.

Further, one end of described belt body is the first kink 1802, and correspondence has the first installing hole 1803；Separately One end is the second kink 1808, and correspondence has the second installing hole 1809；The first described installing hole 1803 is arranged on system Far-end on swing arm 400, the length of the first kink 1802 is longer than the second kink 1808.The present embodiment is according to braking Band is arranged on the construction features on brake arm 400, by length and the length of the second kink 1808 of the first kink 1802 The difference that degree is arranged, in order to connect.Further, due to the first installing hole 1803 be arranged on brake arm 400 remote End, so the length of the first kink 1802 is longer than the second kink 1808.

Specifically, the first installing hole 1803 is arranged on the first connecting shaft 401, and the second installing hole 1809 is arranged on second even Connecing, 402, second connects, and 402 are arranged on inside the first connecting shaft 401.

Specifically, there is between described the first kink 1802 and belt body 1,801 first solder joint the 1805, second solder joint 1806 and the 3rd solder joint 1807, the first solder joint 1805 is arranged near the first installing hole 1803；The second described kink There is between 1808 and belt body 1801 the 4th solder joint the 1812, the 5th solder joint 1810 and the 6th solder joint 1811, the 4th solder joint 1812 are arranged near the second installing hole 1809；The described distance between the first solder joint 1805 and the first installing hole 1803 Equal to the distance between the 4th solder joint 1812 and the second installing hole 1809.So, tight to guarantee the connection near installing hole Gu degree.

Further, the described distance between the second solder joint 1806 and the 3rd solder joint 1807 is equal to the 5th solder joint 1810 And the distance between the 6th solder joint 1811.So, to guarantee the connection tightness of kink end.

Specifically, between described kink and belt body, the diameter of solder joint is not less than 4mm.So, to guarantee the strong of welding Degree.

As a kind of preferred implementation of the present embodiment, described belt body arranges reinforcement 1804, reinforcement 1804 Centrage along belt body is arranged, and the length of reinforcement 1804 is not less than the 85% of tape body length.The braking of the present embodiment Band have employed the mode of welding, shortens the length of junction, can lengthen the length of reinforcement 1804 as far as possible, Avoid producing flexural deformation during brake band roll forming, and open guarantee system when brake band disengages braked wheel at brake arm 400 The Zhang Du of dynamic band.

The brake band of the present embodiment uses and is welded to connect, and compared to riveting, saves space, the reinforcement 1804 of brake band Length can lengthen accordingly, thus ensures brake band rigidity, avoid when brake band roll forming produce flexural deformation, and Brake arm opens the Zhang Du ensureing brake band when brake band disengages braked wheel.

The above is only preferred embodiment of the present utility model, and this utility model is not made any pro forma limit System, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model, any ripe Know the technical staff of this patent in the range of without departing from technical solutions of the utility model, when in the technology of available above-mentioned prompting Hold and make a little change or be modified to the Equivalent embodiments of equivalent variations, as long as without departing from technical solutions of the utility model Content, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, All still fall within the range of this utility model scheme.

Claims (6)

1. a decelerating clutch of washing machine, embracing spring, upper ratchet, bottom ratchet wheel and pawl arm including clutch, upper ratchet and bottom ratchet wheel are respectively sleeved at clutch and embrace the two ends of spring and link with it, and pawl arm arranges the first ratchet and the second ratchet, first ratchet correspondence bottom ratchet wheel, ratchet in the second ratchet correspondence；The first described ratchet engages with bottom ratchet wheel, and when the second ratchet engages with upper ratchet, clutch is embraced spring and unclamped, it is achieved washing, and the first ratchet separates with bottom ratchet wheel, and when the second ratchet separates with upper ratchet, clutch is embraced spring and tightened up, it is achieved dehydration；

It is characterized in that, the relative angle between the first described ratchet and the second ratchet meets: washing machine performs washing/rinsing program, and the first ratchet starts with bottom ratchet wheel to engage to start to engage with upper ratchet prior to the second ratchet；Washing machine performs dehydration procedure, and the second ratchet is initially separated with upper ratchet and is initially separated with bottom ratchet wheel prior to the first ratchet.

A kind of decelerating clutch of washing machine the most according to claim 1, it is characterized in that, the first described ratchet has the first acting surface offseted when engaging with bottom ratchet wheel, second ratchet has the second acting surface offseted when engaging with upper ratchet, and the angle between the first described acting surface and the second acting surface is 135 °～165 °.

A kind of decelerating clutch of washing machine the most according to claim 1 and 2, it is characterized in that, described pawl arm includes connecting portion and arm body, and connecting portion is fixedly mounted in rotating shaft and rotates therewith, the free end end of arm body arranges the first ratchet, and the middle part of arm body arranges the second ratchet.

A kind of decelerating clutch of washing machine the most according to claim 3, it is characterised in that the first described ratchet is fixedly installed on arm body, and the second described ratchet is elastic construction or can move relative to arm body.

A kind of decelerating clutch of washing machine the most according to claim 4, it is characterised in that the second described ratchet is spindle rotationally arranged on arm body, when the direction of the second pawl rotation and dehydration, upper pawl wheel is in opposite direction.

A kind of decelerating clutch of washing machine the most according to claim 1 and 2, it is characterised in that also include deceleration train and housing；Described deceleration train is arranged in housing, and on housing, the one end near upper ratchet arranges bearing block；Being additionally provided with detent mechanism in described pawl arm, the outer peripheral surface of bearing block is the locating surface of detent mechanism, when detent mechanism contacts with the outer peripheral surface of bearing block, can limit pawl arm and move further.