WO2017133490A1 - Embrayage à réduction de vitesse pour machine à laver - Google Patents

Embrayage à réduction de vitesse pour machine à laver Download PDF

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Publication number
WO2017133490A1
WO2017133490A1 PCT/CN2017/071907 CN2017071907W WO2017133490A1 WO 2017133490 A1 WO2017133490 A1 WO 2017133490A1 CN 2017071907 W CN2017071907 W CN 2017071907W WO 2017133490 A1 WO2017133490 A1 WO 2017133490A1
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WIPO (PCT)
Prior art keywords
housing
brake
window
brake band
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/071907
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English (en)
Chinese (zh)
Inventor
任强军
薛昌辉
缪立春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanxing Mechanical & Electronical Stock Co Ltd
Original Assignee
Zhejiang Sanxing Mechanical & Electronical Stock Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610071313.5A external-priority patent/CN107022873B/zh
Priority claimed from CN201610074946.1A external-priority patent/CN107022877B/zh
Application filed by Zhejiang Sanxing Mechanical & Electronical Stock Co Ltd filed Critical Zhejiang Sanxing Mechanical & Electronical Stock Co Ltd
Publication of WO2017133490A1 publication Critical patent/WO2017133490A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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 

Definitions

  • the present invention relates to the field of deceleration clutches, and more particularly to a deceleration clutch for a washing machine.
  • washing machines have become more and more widely used in the homes of ordinary people.
  • the most common one is the pulsator automatic washing machine.
  • the washing machine deceleration clutch is the main transmission in the pulsator automatic washing machine.
  • the function of the component is to reduce the speed of the motor and increase the torque.
  • the brake device of the existing deceleration clutch generally comprises a brake arm and a brake band sleeved outside the brake wheel, and the brake band belongs to an important component of the brake device of the deceleration clutch of the washing machine, and the Chinese patent of application number 201520261740.0 Disclosed is a washing machine deceleration clutch brake sleeve, the brake sleeve includes a brake wheel and a limiting device, and the limiting device surrounds the outer side of the brake wheel, thereby forming a limiting cavity between the limiting device and the braking wheel
  • the limiting cavity is adapted to install a brake band, thereby limiting the braking band in the limiting cavity, so that the braking band is opened according to a space defined by the limiting cavity, wherein the end of the braking band is connected by a bolt On the shell, but the joints of the two are all curved.
  • the present invention has been made in view of the above.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, to provide an improved washing machine deceleration clutch, improve the connection stability between the existing brake band and the casing, improve the assembly performance and service life of the deceleration clutch, and reduce The force of the connecting piece and the hole connecting the brake band and the shell is small, the service life of the connecting piece is improved, the deformation of the connecting piece and the hole is reduced, and the connection stability between the existing braking band and the housing is further improved.
  • a washing machine deceleration clutch comprises a casing, a brake band, a brake arm, a brake wheel disposed in the casing, a casing window on the casing, the brake band comprising a fixed end, a steering end and both
  • the braking section between the housing and the brake wheel encloses the outer circumference of the brake wheel portion, the fixed end passes through the housing window and is connected with the housing, and the operating end passes through the housing and is connected with the brake arm.
  • the fixed end includes a fixing plate, and the fixing plate is connected to the braking portion by a bending portion, and an edge of the housing window has a fixing surface close to a plane, and a side surface and a fixing surface of the fixing plate of the fixing end Basic contact with the installation.
  • the fixing surface is a nearly planar surface formed by the housing protrusion or the housing recess.
  • the fixing surface extends from the edge of the housing window in a groove shape on the outer circumferential surface of the housing to The arcuate transition of the housing is connected.
  • a position corresponding to the fixed surface of the housing is provided with a convex arc toward the center of the housing.
  • the housing is provided with a positioning hole that is coordinated with a protruding portion of the fixing plate of the brake band, and the fixing surface of the housing extends from one edge of the housing window to the positioning hole, preferably to the Exceeds the edge of the positioning hole.
  • the fixing surface and the fixing plate are provided with bolt holes through which the fixing bolts are passed, and the fixed end of the braking band is fixedly connected to the housing by a fixing device, and the distance between the bent portion and the center of the bolt hole of the fixing plate is greater than
  • the fixing surface is located at a distance from the edge of the housing window to the center of the bolt hole on the fixing surface.
  • the bolt hole is disposed in an arcuate bottom portion of the curved protrusion.
  • bent portion is in contact with the side of the fixed surface toward the side of the lower casing.
  • the width of the fixing surface along the axial direction of the deceleration clutch is greater than the sum of the width of the fixing plate and the thickness of the side flanges, and the fixing plate is substantially disposed in the concave portion of the groove-shaped fixing surface of the housing. And at least partially below or equal to the sidewall of the groove.
  • both sides of the fixed end and/or the operating end is greater than the thickness of the brake band body between the two sides to form a reinforcing portion.
  • the two sides of the brake band are folded back in the direction of the housing to form a flange integrally formed with the brake band, and the flange is substantially perpendicular to the brake band body, and the flange is In the reinforcing portion, the flange is symmetrically disposed along an axis of the longitudinal direction of the brake band.
  • the longitudinal width of the braking band at the transition end of the braking band and the braking segment is smaller than the width of the braking segment to form a notch segment, and the reinforcing portion extends along the length of the braking band to form a notch segment.
  • the notched end, or the fixed end of the brake band is connected to the braking section by a bending portion, a notch section is provided between the bending part and the braking section, and both sides of the braking band of the fixed end are opposite to the housing
  • the reinforcing portion is disposed in a direction, and the reinforcing portion extends along the longitudinal direction of the brake band through the bent portion to the notch portion to form a notch end.
  • the notch segment is disposed within the housing window and located between the window wall of the housing window and the brake wheel;
  • the reinforcing portion adjacent to the notch end is at least partially disposed under the window wall of the housing window, and the reinforcing portion and the window wall are alternately disposed at intervals, and the thickness of the opposite portion of the outer side wall of the reinforcing portion and the window wall of the housing window is greater than the reinforcement. The thickness of the part.
  • the housing window extends toward the window at least one side wall adjacent to the fixed end of the brake band to form a housing limiting step, and the notch segment is disposed within the housing window and located in the housing window Between the window wall and the brake wheel; the reinforcing portion adjacent to the notch end is at least partially disposed under the housing limiting step, so that a partial interaction is formed between the reinforcing portion and the side surface of the housing limiting step, the outer side of the reinforcing portion The thickness of the wall opposite the window wall of the housing window is greater than the thickness of the reinforcement.
  • the fixed end of the brake band is connected to a fixing plate that is matched with a near-plane fixing surface provided on the housing by a bending portion, and the fixing plate of the braking band is directed to the end of the braking band
  • the direction extends with a protruding portion
  • the housing is provided with a positioning hole positioned in cooperation with the protruding portion, and the fixed end of the braking band is connected to the braking portion through the bending portion, the bending portion and the braking portion a first notch is disposed between the two sides of the fixed end of the brake band, and the reinforcing portion is a flange, and the flange extends from the intersection of the protruding portion and the fixing plate to the The first gap.
  • the brake band is provided with a reinforcing rib extending along the brake band on one side of the housing, and the two ends of the reinforcing rib respectively extend to the intersection of the flange and the notch.
  • the height of the flange is greater than or equal to the wall thickness of the casing, and the casing window extends toward the window at least one sidewall adjacent to the fixed end of the brake band to form a casing limiting step.
  • the length of the housing limiting step in the circumferential direction of the housing is less than the length of the bent portion.
  • the height of the cross section of the flange of the flange to the flange cutoff in the direction perpendicular to the length of the brake band is high to low, and the flange extends along the length of the brake band. It is rounded.
  • the housing window extends toward the window at least one side wall adjacent to the braking end of the brake band to form a housing limiting step, and the bending portion and the reinforcing portion thereon are directed to the housing window
  • the inner extension of the housing limiting step is shorter than the reinforcing portion on the bent portion in the outer circumferential direction of the housing, so that the housing has a distance between the limiting step and the notched end, and the housing limiting step is close.
  • the side surface of the step portion is spaced apart from the outer side surface of the reinforcing portion near the notch end.
  • the fixed end of the brake band and/or the transition of the operating end and the braking section are provided with a longitudinal width smaller than the notch of the brake band, and the fixed end and/or the side of the operating end are bent to form a certain height.
  • the flange is formed symmetrically on the two sides of the brake band along the longitudinal direction of the brake band, and the notch and the flange are connected in a transitional manner along the length of the brake band.
  • the length of the edge is greater than or equal to the length of the gap.
  • the fixed end includes a fixing plate and a bending portion, and the fixing end passes through the housing window and is coupled to the housing, and the bending portion is disposed adjacent to the lateral window sidewall of the housing window, and the notch and the flange are provided.
  • the transition joint is disposed between the housing window and the brake wheel and lower than the side wall of the housing window, and preferably the transition joint of the notch and the flange extends to the inside of the housing window to at least the bottom of the flange exceeds the housing window
  • the inner surface of the side wall of the window is either flush with it.
  • one side of the housing window in the circumferential direction is provided with a housing limiting step integrally provided with the housing, and one end of the housing limiting step is integrally connected with the lateral window side wall of the housing window.
  • the other end extends to less than one-half of the side wall of the circumferential window of the housing window
  • the fixed end includes a fixing plate and a bending portion, and the fixing end passes through the housing window to be coupled with the housing, and the bending
  • the fold portion is disposed adjacent to the lateral window sidewall of the housing window, and the transition joint between the notch and the flange is disposed between the housing window and the brake wheel and lower than the inner surface of the housing, preferably the transition joint of the notch and the flange
  • the interior of the housing window extends to the bottom of at least one of the flanges beyond or flush with the inner surface of the housing limiting step.
  • the height of the flange is greater than or equal to the wall thickness of the casing, and the length of the casing limiting step in the circumferential direction of the casing is smaller than the length of the bending portion.
  • the brake band has a rubber sheet adhered to one side of the housing, and the width of the band of the brake band provided with the notch is less than or equal to the width of the rubber sheet.
  • the notch length of the notch along the longitudinal direction of the brake band is greater than the notch depth along the axial direction of the deceleration clutch, and the ratio of the notch length to the notch depth is ⁇ 3:1.
  • the width of the brake band body between the two flanged inner walls of the fixed end and/or the operating end is less than or equal to the width of the braking segment, and the width between the outer edges of the two flanges is less than or equal to the braking segment. width.
  • the notch is a symmetrical or asymmetrical trapezoid, and the end of one waist of the trapezoid is integrally formed with the bottom end of the flange, and the upper edge of the flange and the notch are rounded, and the flange of the fixed end is on the flange
  • the rim end is smooth and the slant transition is connected to the bottom end.
  • the inner surface of the lower casing is spaced apart from the brake belt by a first spacer and a second spacer, and the torque of the brake arm is used to brake the belt from the brake belt and the brake wheel.
  • the first block acts as a first fulcrum to transmit a torque to the brake band between the first block and the second block.
  • the second block acting as a second fulcrum to transmit torque to the brake band between the second block and the end of the brake band The brake wheel is separated.
  • the present invention has the following beneficial effects compared with the prior art:
  • the invention is improved on the existing washing machine deceleration clutch, and the lower casing is provided with a fixing surface matched with the fixed end of the brake band, and the fixed end of the braking band is provided with a fixing plate matched with the fixing surface, the braking band and the deceleration clutch
  • the housing is connected by bolts, and a bolt hole through which the fixing bolt passes is provided on the fixing surface of the lower casing and the fixing plate of the fixed end of the brake band, so that the connection between the brake band and the lower casing is changed from the existing curved surface to the flat surface. Connection, the contact area of the bolt on the plane is much larger than the contact area on the arc surface.
  • the brake belt vibrates, especially when the fixed end of the brake belt is connected to the housing.
  • the bolts are connected to the two planes at this time, which improves the stability of the connection between the two.
  • the bolts will not loosen during the severe vibration, improve the assembly performance of the deceleration clutch of the washing machine, and improve the use of the deceleration clutch of the washing machine. life.
  • the invention improves the existing washing machine reducer clutch, and has the following beneficial effects:
  • the strength of the brake band is increased, in particular, the brake band is respectively coupled to the housing and the brake arm.
  • the strength of the two ends of the belt makes the brake belt less susceptible to deformation and fatigue fracture when subjected to severe vibration, which improves the assembly performance and service life of the deceleration clutch.
  • the flanges of the brake band are symmetrically arranged and parallel to each other and are perpendicular to the surface of the brake band.
  • the brake band bypasses the brake wheel and the fixed end of the brake band passes through the housing window and is connected to the housing.
  • the flanging serves to position the brake band.
  • the side edge of the housing window is provided with a housing limiting step that cooperates with the flange limiting position, and also functions as a positioning when the fixed end is connected to the housing.
  • the height of the cross section of the flange on the brake band to the flange cut-off at the transition perpendicular to the length of the brake band is high to low, which reduces stress concentration and improves the strength and service life of the brake band. .
  • the gap between the flange and the brake section is notched, so that the flange is not easy to produce burrs during processing, which improves the assembly performance and service life of the reduction clutch.
  • the side of the brake belt facing the casing is provided with a reinforcing rib extending along the brake band, and the reinforcing rib is a continuous convex arc structure extending along the center line of the length of the brake band, thereby improving the rigidity of the brake band and reducing the rigidity.
  • the amount of deformation of the brake band after forming, and the degree of tension of the brake band is ensured when the brake arm opens the brake band to disengage the brake wheel.
  • the brake band when the brake band is disengaged from the brake wheel, the torque is transmitted to the first block and the second block as a fulcrum due to the arrangement of the first block and the second block At one end of the moving belt, the transmission of the torque provided by the brake arm is ensured, and the disengagement gap between the brake band and the brake wheel is limited, so that the brake band is completely separated from the brake wheel. At the same time, the brake band is in contact with the first block and the second block, which effectively reduces the vibration amplitude of the brake band and reduces noise.
  • FIG. 1 is a schematic overall structural view of an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional structural view of an embodiment of the present invention.
  • Figure 3 is a partial enlarged view of A in Figure 1;
  • FIG. 4 is a schematic structural view of a brake band according to an embodiment of the present invention.
  • Figure 5 is a schematic structural view of a brake band according to an embodiment of the present invention.
  • housing 1 output shaft 3, brake device 4, clutch device 5, brake wheel 6, brake arm 41, brake band 42, upper housing 11, lower housing 12, housing window 111, a housing limiting step 112, a fixing bolt 422, a fixing end 7, a steering end 8, a braking section 9, a bending part 10, a fixing surface 13, a fixing plate 14, a protruding portion 15, a positioning hole 16, a flange 17, Bolt hole 18, notch 19, rib 20, first notch 21, shaft pin 22, damping piece 23, second pad 24, first pad 25.
  • the deceleration clutch provided by the present invention includes a housing 1, an input shaft (not shown), an output shaft 3, a brake device 4, a clutch device 5, and a brake wheel 6.
  • the input shaft (not shown), the brake wheel 6 and the output shaft 3 are coaxially arranged.
  • the brake device 4 includes a brake arm 41 and a brake band 42 that is sleeved outside the brake wheel 6. Both ends of the brake arm 41 are rotatably disposed on the housing 1.
  • the housing 1 includes an upper housing 11 and a lower housing 12.
  • the lower housing 12 is disposed outside the brake wheel 6.
  • the lower housing 12 is provided with a housing window 111.
  • One end of the braking belt 42 is a fixed end 7.
  • the brake band 42 bypasses the brake wheel 6, and the fixed end 7 passes through the housing window 111 and is connected to the lower casing 12.
  • the end of the brake band 42 away from the lower casing 12 is the operating end 8, and the operating end 8 It is connected to the brake arm 41.
  • the fixed end 7 includes a fixing plate 14 which is connected to the braking portion 9 via a bent portion 10, and the housing 1 has a fixing surface 13 at one edge of the housing window, and the fixing surface 13
  • the fixing surface 13 cooperates with the fixed end 7 of the brake band 42, in particular one side of the fixing plate 14 of the fixed end 7 is mounted in a substantially contact fit with the fixing surface 13.
  • the fixing surface 13 is a surface stamped on the curved surface of the casing, and more preferably the fixing surface 13 is a flat surface.
  • the fixing surface 13 is a nearly planar surface formed by the housing protrusion or the housing recess.
  • the fixing surface 13 extends from the edge of the housing window 111 in a groove shape on the outer circumferential surface of the housing 1 to the housing 1 . Curved transition connection. Moreover, the thickness of the casing at the fixing surface 13 is substantially the same as the thickness of the casing of the other region of the casing, and the thickness of the arc-shaped projection corresponding to the fixing surface of the inner side surface of the casing is different from the groove-shaped fixing surface of the outer surface of the casing. The depth is mutually compensated.
  • the lower housing 12 is provided with a positioning hole 16 that is positioned to cooperate with the extension 15 of the fixing plate 14 of the brake band 42, and the fixing surface 13 of the housing extends from one edge of the housing window 111 to the positioning hole 16, preferably to Exceeding the edge of the positioning hole 16.
  • the housing window 111 is a rectangular window opened on the housing, and the housing window 111 coincides with an edge line that is adjacent to the prescription of the brake band and the housing and an edge of the fixing surface 13 away from the junction of the brake band and the housing.
  • the fixing surface 13 of the lower casing 12 extends from the positioning hole 16 to the side of the casing window 111 near the prescription of the brake band and the casing.
  • a housing limiting step 112 is further disposed on both sides or one side of the housing window 111. The housing limiting step cooperates with the braking band 42 to define an assembly position of the braking band.
  • the brake band 42 is a curved steel strip, and the two ends of the brake band 42 are respectively a fixed end 7 and a steering end 8, and a braking section is provided between the fixed end 7 and the operating end 8. 9.
  • the fixed end 7 is connected to the fixing plate 14 by the bent portion 10, and the fixing plate 14 is engaged with the fixing surface 13 on the lower casing 12.
  • the fixing surface 13 and the fixing plate 14 are provided with fixing bolts 422
  • the fixed end 7 of the brake band 42 is fixedly connected to the lower housing 12 by a fixing bolt 422 through the bolt hole 18.
  • the bolt hole 18 is provided at the center of the fixing surface 13 in the axial direction of the deceleration clutch, and the bolt hole 18 is also provided at the center of the fixing plate 14 in the axial direction of the deceleration clutch.
  • the housing of the existing reduction clutch includes a lower housing which is generally cylindrical, a surface having no surface but a certain curvature, and a brake belt 42 of the reduction clutch bypassing the brake wheel 6, and the brake band 42 is fixed.
  • the end 7 is passed out of the housing window 111 and is fixedly connected to the lower housing 12 by a fixing bolt 422. Since the lower casing 12 is a cylindrical surface having a certain curvature, the connection between the fixing bolt 422 and the surface of the lower casing is also a curved surface, and the joint area is small.
  • the brake belt 42 and the lower casing The fixed connection of 12 is not affected by an external force, and the stability of the connection can be ensured, but when the deceleration clutch is braked, the brake band vibrates, especially the connection between the fixed end 7 of the brake band 42 and the lower casing 12 More severely, the fixed connection between the brake band 42 and the lower casing 12 is subjected to a large external force, and the stability of the connection is difficult to ensure. At this time, the fixing bolt is likely to be loose, so that the brake band is disconnected from the lower casing. Eventually it will affect the assembly performance and service life of the washing machine's deceleration clutch.
  • the lower casing 12 of the washing machine reduction clutch of the present embodiment is provided with a fixing surface 13 that cooperates with the fixed end 7 of the brake band 42.
  • the fixing surface 13 is a surface that is close to a plane. More preferably, the fixing surface 13 is a flat surface. It should be noted that the fixing surface 13 may be a surface that is formed to protrude outward from the casing, or may be a surface that is recessed into the casing. Thus, a plane of a certain area or a plane is formed on the curved surface of the original cylindrical casing, and the connection between the fixing bolt 422 and the lower casing surface is changed from a curved surface to a plane, compared with the prior art.
  • the area of the joint is increased, and the stability of the bolt connection is improved.
  • the deceleration clutch is braked, the fixing bolt is not easily loosened, and the brake belt is prevented from being disconnected from the lower casing, thereby improving the assembly performance of the deceleration clutch of the washing machine.
  • the connection between the brake band 42 and the lower casing also has a certain arc, and the fixing bolt is connected to the brake band having a certain arc, also due to The contact area at the joint is small, and it is difficult to ensure the stability of the connection.
  • the connection between the brake band 42 and the lower casing is improved, and the fixed end 7 of the braking band 42 is provided.
  • the bending forms a fixing plate 14 that cooperates with the fixing surface 13 on the lower casing 12, and the fixing plate 14 is also close to a plane, and more preferably, the fixing plate 14 is flat.
  • the positioning hole 16 , the protruding portion 15 of the fixing plate 14 of the braking band 42 is bent and protrudes into the positioning hole 16 to cooperate with the positioning of the braking band 42 so that the braking band 42 and the lower case are ensured during severe vibration.
  • the connection stability of the body 12 ensures that the assembly position of the brake band 42 is unchanged. among them,
  • the width of the projection 15 may be smaller than the width of the fixing plate 14 to facilitate mounting on the lower casing 12.
  • the fixing surface 13 on the lower casing 12 has a groove shape on the casing, and the casing window 111 is a rectangular window opened on the casing, and the fixing surface 13 extends from the edge of the casing window 111 to the casing.
  • the arcuate transitional connection of the body, the housing window 111 coincides with the edge line of the prescription of the brake band and the housing connection and the edge of the fixing surface 13 away from the junction of the brake band and the housing.
  • the fixing surface 13 of the lower casing 12 extends from the edge of the casing window 111 up to the positioning hole 16.
  • the fixed end 7 and/or The thickness of the two sides of the operating end 8 is greater than the thickness of the brake band body between the two sides to form a reinforcing portion, and both sides of the braking band 42 are folded back in the direction of the housing 1 to form a turn integrally with the brake band.
  • the edge 17 is substantially perpendicular to the body of the brake band, and the flange 17 is the reinforcement.
  • the flanges 17 are symmetrically disposed along the axis of the brake belt 42 in the longitudinal direction.
  • the longitudinal width of the brake band at the transition of the fixed end 7 of the brake band 42 and the braking segment 9 is smaller than the width of the braking segment to form a notch segment, and the reinforcing portion, that is, the flange extends along the length of the braking band to form a notch segment.
  • the notched end, or the fixed end 7 of the brake band 42 is connected to the braking section 9 via the bent portion 10, the notched section is provided between the bent portion 10 and the braking section 9, and the braking band of the fixed end 7 is provided.
  • the two sides are provided with a reinforcing portion, that is, a flange 17 in a direction opposite to the casing 1.
  • the reinforcing portion that is, the flange, extends along the longitudinal direction of the brake band through the bent portion to the notched portion to form a notched end.
  • the notch section is disposed within the housing window 111 and between the window wall of the housing window and the brake wheel 6; the reinforcing portion adjacent the notch end, that is, the flange 17 is at least partially disposed on the window wall of the housing window 111.
  • the flange 17 and the window wall are alternately disposed at intervals, and the thickness of the opposite side wall of the flange 17 from the window wall of the housing window 111 is greater than the thickness of the flange 17.
  • the housing window 111 extends into the window near at least one side wall of the fixed end of the brake band 42 to form a housing limiting step 112.
  • the notch segment is disposed within the housing window 111 and located in the housing window 111.
  • the flange 17 adjacent to the notch end is at least partially disposed below the housing limiting step 112, so that a partial interaction is formed between the flange 17 and the side surface of the housing limiting step 112, and the flange is formed.
  • the thickness of the portion of the outer wall opposite the window wall of the housing window 111 is greater than the thickness of the flange 17.
  • the housing window 111 extends toward the window at least one side wall adjacent to the braking end of the brake band 42 to form a housing limiting step 112, the bending portion 10 and the flange on the housing window 111 Internally extending, the length of the housing limiting step 112 along the outer circumferential direction of the housing 1 is shorter than the flange 17 of the bending portion 10 to have a spacing between the housing limiting step 112 and the notched end, and the housing limiting step 112 The side of the approaching step portion is spaced apart from the outer side of the flange 17 near the notch end.
  • the fixed end 7 of the brake band 42 is connected to the braking section 9 through the bent portion 10, the first notch 21 is provided between the bent portion 10 and the braking segment 9, and the two braking bands of the fixed end 7 are provided.
  • the lateral back folds in the direction of the housing and is long along the brake band 42 The degreewise direction extends through the bent portion 10 until the flange 17 is formed at the first notch 21.
  • the side edge of the housing window 111 is provided with a housing limiting step 112 that cooperates with the above-mentioned flange limit.
  • the first notch 21 is formed in the braking band that is offset from the housing window 111 by the housing limiting step 112. At 42, the flange extends to the first notch 21.
  • the width of the fixing surface 13 along the axial direction of the deceleration clutch is greater than the sum of the width of the fixing plate 14 plus the thickness of the flanging sides.
  • a certain width can be appropriately added to the above width to ensure that the fixing plate 14 is completely fitted in the fixing surface 13.
  • the fixing surface 13 and the fixing plate 14 are provided with bolt holes 18 through which the fixing bolts 422 pass, and the fixing of the braking band 42 is provided.
  • the end 7 is fixedly connected to the lower housing 12 by means of a fastening means, i.e. a fixing bolt 422.
  • the housing 1 is provided with a positioning hole 16 which is matched with the protruding portion 15 of the fixing plate 14 of the brake band.
  • the fixing surface 13 and the fixing plate 14 are provided with bolt holes 18 through which the fixing bolts 422 pass, and the inside of the housing 1
  • a laterally convex projection corresponding to the fixing surface 13 is provided on the side from the edge of the housing window 111 to the positioning hole 16.
  • the distance between the bent portion 10 and the center of the bolt hole on the fixing plate 14 is greater than the distance from the side of the fixing surface 13 to the edge of the housing window 111 to the center of the bolt hole on the fixing surface.
  • the bolt hole 18 is disposed in the arc of the curved protrusion. Shape the bottom area.
  • a bolt hole 18 is provided between the curved bottom portion of the curved projection to the positioning hole 16.
  • the bolt receives the tensile force, and the bolt rod and the bolt hole will be plastically deformed or broken.
  • the tensile strength and static strength of the bolt are constant, the greater the tensile force, the more likely the plastic deformation or fracture will occur.
  • the brake band is curved, the lower casing is a cylinder, and the connection between the two is a curved surface contact.
  • the moving belt acts on the fixing bolt and the bolt hole, so that the bolt rod and the bolt hole are plastically deformed, so that the bolt is likely to be loose during the severe vibration, and the fixing bolt may even be broken for a long time, which reduces the assembly of the deceleration clutch. Performance and service life.
  • the brake band 42 of the present embodiment is a curved steel strip, and the two ends of the brake band 42 are respectively a fixed end 7 and a steering end 8, and the fixed end 7 passes through the bent portion 10.
  • the fixing plate 14 is connected, and the fixing plate 14 is engaged with the fixing surface 13 on the lower casing 12.
  • the distance from the bent portion 10 to the center of the bolt hole on the fixing plate 14 is greater than the distance from the side of the fixing surface 13 toward the side of the housing window to the center of the bolt hole on the fixing surface, and the bent portion 10 faces the side of the lower casing It is in contact with the edge of the fixed surface 13 that is measured toward the housing window 111.
  • the fixing end 7 is connected to the fixing plate 14 through the bending portion 10, so that when the braking belt and the braking wheel vibrate violently, the pulling force does not directly act on the fixing bolt and the bolt hole in the direction of the braking band, but the tension is made.
  • the moving belt acts directly on the bending portion 10, which reduces the tension of the fixing bolt 422 and reduces the force between the fixing bolt and the bolt hole.
  • the plastic deformation of the bolt rod and the bolt hole is small, and the fixing bolt is not easily broken. Since the bending portion 10 is in contact with the edge of the fixing surface 13, the fixing surface 13 of the lower casing 12 supports the bending portion 10, so that the fixing is fixed.
  • the tension of the brake band received by the bolt and the bolt hole is reduced, and the fixing bolt and the bolt hole are not easily deformed.
  • the thickness of the fixing surface 13 of the casing is the same as the thickness of the casing, and the rigidity of the fixing surface 13 is not lowered, so that the fixing surface 13 can support the bending portion 10, and the vibration is prevented when the deceleration clutch is braked.
  • the bolt is likely to be loose, the stability of the connection between the brake band and the lower casing is improved, and the assembly performance and service life of the deceleration clutch of the washing machine are improved.
  • two or one side of the housing window 111 is further provided with a housing limiting step 112, and the housing limiting step cooperates with the braking belt 42 to define an assembly position of the braking band.
  • the two sides of the fixing plate 14 of the brake band 42 are provided with a flange 17 facing away from the casing.
  • the flange 17 extends along the length of the brake band to reach the position of the casing limiting step. Therein, the flange 17 extends in the longitudinal direction of the brake band and passes through the bent portion 10.
  • the connection between the brake band 42 and the lower casing 12 and the brake arm 41 is relatively strong, in order to increase the strength of the connection of the brake band 42, as shown in FIGS. 4 and 5,
  • the thickness of the brake band along the width direction of the braking band is greater than the thickness of the intermediate portion to form the flange 17, and the flange 17 faces away from the housing
  • a flange formed integrally with the brake band may be formed by folding both sides of the brake band, and the flange 17 is symmetrically disposed along an axis of the length of the brake band, and the flange increases the rigidity of the brake band and improves The assembly performance of the deceleration clutch.
  • the flange 17 is at right angles or obtuse angles to the brake band. The smaller the height of the flange 17 facing away from the casing, the more difficult it is to fold over the two sides of the brake band, and the more easily the flange and the brake band form an obtuse angle.
  • the fixing surface 13 is a concave surface of the housing surface which is formed by stamping to the housing.
  • the width of the fixing surface 13 along the axial direction of the deceleration clutch is greater than or equal to The width of the fixing plate 14 plus the sum of the thicknesses of the flanks on both sides.
  • the fixing surface 13 having the above width may not ensure that the fixing plate 14 and the two with the braking band are obtuse.
  • the flanges fall into the concave fixing surface 13 of the housing, so that the fixing surface 13 and the fixing plate 14 cannot be completely fitted, which will result in the brake belt and the housing not being tightly connected, and the assembly performance of the reduction clutch is reduced.
  • the width of the fixing surface 13 in the axial direction of the deceleration clutch is larger than the sum of the width of the fixing plate 14 and the thickness of the side flanges, and the fixing plate 14 is basically disposed in the housing concave.
  • the recess of the groove-like fixing surface 13 is at least partially lower than or equal to the side wall of the groove.
  • the fixed end 7 of the brake band 42 and the flange 17 of the operating end 8 and the braking section 9 are provided with a gap at the transition point of the braking section 9 as shown in FIGS. 19.
  • the notches 19 are symmetrically disposed on both sides of the brake band along the axis of the length of the brake band.
  • the flange 17 can be turned back toward the housing.
  • the height is relatively increased, the folding is easy, the flange and the brake band are easy to form a small obtuse angle or form a right angle, and the fixing plate 14 and the two flanges can be made without increasing the width of the fixing surface 13 along the axial direction of the deceleration clutch. Both fall into the concave fixing surface 13 of the housing, which ensures that the fixing surface 13 and the fixing plate 14 are completely fitted, and the assembly performance of the deceleration clutch is improved.
  • the flange of the fixed end and the operating end is folded at a height of 4 mm in a direction perpendicular to the length of the brake band; the flange of the fixed end is bounded by the bent portion, and the bent portion is bent.
  • a length of the flange between the folded portion and the protruding portion is 14 mm along the length of the brake band, and a length of the flange between the bent portion and the first notch is 10 mm along the length of the brake band.
  • the flange at the fold is transitioned with R5 rounded corners, and the cut-off of the flange along the length of the brake band is R2 rounded; the length of the flange of the control end along the length of the brake band is 13mm, and the length of the flange along the length of the brake band The cut-off at the direction is R1 rounded.
  • the fixing end 7 is connected to the fixing plate 14 through the bending portion 10 , so that when the braking belt and the braking wheel vibrate violently, the pulling force does not directly act on the fixing bolt and the bolt hole in the direction of the braking band. Rather, the pulling force acts directly on the bending portion 10 along the braking band, which reduces the tension of the fixing bolt 422, reduces the force between the fixing bolt and the bolt hole, and reduces the bolt rod and the bolt hole.
  • a first notch 21 is provided at the transition of the flange 17 and the braking section 9 at the fixed end 7, and the fixed end 7 is connected to the braking section 9 by the bent portion 10, and the flange at the fixed end 7 passes through the bent portion 10 It extends in the direction of the braking section 9 to the first notch 21. Since the bandwidth of the brake band at the notch is smaller than the bandwidth of the other positions of the brake band, the staggered portion 10 is provided with the first notch to avoid reducing the rigidity of the brake band at the bent portion 10.
  • the side of the housing window 111 is provided with a housing limiting step 112 .
  • the housing limiting step 112 is matched with the flange 17 of the fixed end 7 , and the flange 17 is along the length of the braking belt.
  • the extension can be placed in contact with the housing step, and the first notch 21 is disposed on the brake band that is offset from the housing limit step in the direction of the housing window, so that the limit is accurate.
  • the brake band 42 is provided with a reinforcing rib extending along the brake band on one side of the housing 1.
  • the rib 20 is a continuous convex arc structure extending along the center line of the length direction of the brake band 42, which improves the rigidity of the brake band, reduces the deformation amount after the brake band is formed, and opens at the brake arm. The tension of the brake band is ensured when the brake band is disengaged from the brake wheel.
  • the two ends of the rib 20 respectively extend to the middle portion of the first notch 21 at the fixed end 7 and the middle portion of the notch 19 at the operating end 8, the rigidity of the brake band is improved and the brake band is formed.
  • the width of the rib 20 and the height of the ridge 20 are related to the bandwidth of the brake band.
  • the inventors of the present application have determined through a large number of experiments that the width of the rib is preferably 1/20 of the brake band to 1/5. Dynamic belt bandwidth
  • the height of the projections preferably ranges from 0.5 times the thickness of the brake band to 2 times the thickness of the brake band.
  • a rubber sheet (not shown) for braking is attached to one side of the brake belt 42 opposite to the casing 1.
  • the gap depth of the brake belt 42 is too small to eliminate the burr, and the gap depth is too deep to brake.
  • the belt is easily broken.
  • the inventor of the present application has determined through a large number of experiments that the notch length of the notch 17 along the longitudinal direction of the brake band is greater than the depth of the notch along the axial direction of the deceleration clutch, and the ratio of the notch length to the notch depth is ⁇ 3:1, and the notch depth range is preferably
  • the thickness of the brake band is 1 to 2 times.
  • the length of the notch is 9 mm and the width of the notch is 1.5 mm.
  • the notched edges are rounded, preferably with a fillet radius of 1.5 mm.
  • the braking device of the washing machine reduction clutch of the embodiment includes a lower casing 12 and a brake wheel 6 disposed therein, and the lower casing 12 is provided with a rotatable around the axle pin 22.
  • the brake arm 41 is provided with a casing window 111.
  • the brake band 42 is sleeved outside the brake wheel 6.
  • the brake band 42 passes around the brake wheel 6 and passes through the end.
  • the housing window is connected to the lower housing 12, and the other end is connected to the brake arm 41.
  • the inner surface of the lower housing 12 is spaced apart from the brake belt 42 to provide a first pad.
  • the torque of the brake arm 41 disengages the brake band 42 from the first tangent point of the brake band 42 and the brake wheel 6 from the brake wheel 6 to the first pad 25
  • the first pad 25 transmits the torque as a first fulcrum to the brake band 42 between the first pad 25 and the second pad 24 to separate it from the brake wheel 6 to the brake band 42
  • the second block 24 is in contact, and the second block 24 acts as a second fulcrum to transmit torque to the brake band 42 between the second block 24 and one end of the brake band 42 to separate it from the brake wheel 6.
  • the first tangential point formed by the end of the brake band 42 connected to the brake wheel 41 and the brake wheel 6 is connected with the center line of the brake wheel and the line between the first pad 25 and the center line of the brake wheel.
  • the angle between the first pad 25 and the second pad 24 and the center line of the brake wheel is an acute angle when the angle is greater than 90 degrees and less than or equal to 170 degrees.
  • the angle is that the first tangent point of the brake band 6 connected to the brake arm 41 and the brake wheel 6 are connected to the center line of the brake wheel and the center of the first block 25 and the brake wheel are connected.
  • the angle between the first spacer 25 and the second spacer 24 and the center line of the brake wheel is 40 to 80 degrees.
  • the angle between the shaft pin 22 and the brake wheel center line and the first pad 25 and the brake wheel center line is greater than 90 degrees and less than or equal to 210 degrees, and the shaft pin 22 is made.
  • the center of the moving wheel and the angle between the second block 24 and the center line of the brake wheel are greater than 90 degrees and less than 180 degrees, and the first block 25 and the second block 24 and the center of the brake wheel
  • the angle between the lines is an acute angle.
  • the angle between the shaft pin 22 and the brake wheel center line and the first pad 25 and the brake wheel center line is greater than 120 degrees and less than or equal to 210 degrees, and the shaft pin 22 and The angle between the center line of the brake wheel and the second block 24 and the center line of the brake wheel is greater than 100 degrees and less than 170 degrees, and the first block 25 and the second block 24 and the brake wheel The angle between the center lines is 40 to 80 degrees.
  • the preferred angle is that the angle between the second tangent point and the center line of the brake wheel and the second block 24 and the center line of the brake wheel is 20 degrees to 60 degrees.
  • the angle between the first spacer 25 and the brake wheel center line and the second pad 24 and the brake wheel center line is 40 to 80 degrees.
  • the distance h between the upper surface of the first spacer 25 and the second spacer 24 from the outer circumference of the brake wheel 6 is:
  • the thickness of the brake band 10 is b;
  • m 1080 degrees / a
  • a is the wrap angle formed after the brake band 42 holds the brake wheel 6, and the range of a is: 0 ⁇ a ⁇ 265 degrees.
  • the units of b, h, m and a are identical.
  • the brake band 42 includes a steel strip and a brake pad, the brake pad is in contact with the outer circumference of the brake wheel 6, the brake band 42 is provided with a reinforcing rib, the first pad 25 and the A groove is formed on the second pad 24 corresponding to the rib, and a gap is formed between the groove and the rib.
  • the brake pad can be attached to the steel strip.
  • the width m of the first spacer 25 and the second spacer 24 is:
  • the width of the brake band 42 is n.
  • the first pad 25 and the second pad 24 are rubber pads, and the first pad 25 and the second pad 24 are adhered to the inner surface of the lower casing 12, and the bonding surface is an arc. surface.
  • the brake pad is in contact with the outer circumference of the brake wheel 6, and the brake piece provides friction to achieve the braking state.
  • the width of the brake pad is the same as the width of the brake band 42, and the length of the brake pad covers the length required for the brake band 42 to wrap the brake wheel 6.
  • the damping piece 23 may be disposed on the outer side of the brake band 42 .
  • One end of the damping piece 23 is adjacent to the other end of the braking band 42 .
  • the other end of the damping piece 23 is set according to the use requirement, and generally does not exceed the braking band. Half the length of 42.
  • the brake arm 41 is coupled to the lower casing 12 via a shaft pin 22, and the brake arm 41 is rotatable about the axle pin 22.
  • One end of the brake arm is used to receive an external force, and the other end of the brake arm is at the other end of the brake band.
  • the one end of the brake arm is subjected to a force and rotates toward the end of the brake belt and the lower casing, the other end of the brake belt moves in a direction opposite to the movement of one end of the brake arm, and the brake arm 1 transmits the torque.
  • a brake band 10 connected to one end of the brake arm 1 is provided to elastically deform the brake band, and the brake band 42 is detached from the brake wheel 6 from the first cutting point to contact with the first pad 25,
  • the first pad 25 acts as a first fulcrum and transmits a torque to the brake band 42 between the first pad 25 and the second pad 24 to separate it from the brake wheel 6 to the brake band 42 and the second pad.
  • the blocks 24 are in contact and the second block 24 acts as a second fulcrum to transmit torque to the brake band between the second block 24 and one end of the brake band to separate it from the brake wheel 6.
  • the brake band passes the torque to the brake arm 41,
  • the torque causes the brake band 42 to elastically deform, so that the brake band 42 is completely separated from the brake wheel 6, that is, when the washing machine is dehydrated, the brake band 42 is disengaged from the restriction of the brake wheel 6, the brake wheel rotates, and the dehydration is driven. Bucket work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

La présente invention concerne un embrayage à réduction de vitesse pour machine à laver, ledit embrayage à réduction de vitesse comprenant un boîtier (1), une bande de freinage (42) et un bras de freinage (41), une roue de freinage (6) étant agencée dans le boîtier (1) ; le boîtier (1) comprend une fenêtre de boîtier (111) ; la bande de freinage (42) comprend une extrémité fixe (7), une extrémité de manipulation (8) et une section de freinage (9) placée entre lesdites extrémités ; la section de freinage (9) se trouve entre le boîtier (1) et la roue de freinage (6), et elle entoure une partie de la périphérie de la roue de freinage (6) ; l'extrémité fixe passe à travers la fenêtre de boîtier (111) afin de se connecter au boîtier (1) ; l'extrémité de manipulation traverse le boîtier (1) afin de se connecter au bras de freinage (41) ; l'extrémité fixe comprend une plaque fixe (14) ; la plaque fixe est reliée à la section de freinage (9) au moyen d'une partie courbée (10) ; un bord de la fenêtre de boîtier (111) est doté d'une surface de fixation (13) presque plane, et un côté de la plaque fixe (14) de l'extrémité fixe est monté sur la surface de fixation en contact par complémentarité basique. L'embrayage à réduction de vitesse résout le problème actuel selon lequel il est difficile d'assurer une connexion stable entre une bande de freinage et un boîtier d'embrayage à réduction de vitesse en cas de vibrations violentes.
PCT/CN2017/071907 2016-02-01 2017-01-20 Embrayage à réduction de vitesse pour machine à laver Ceased WO2017133490A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610071313.5A CN107022873B (zh) 2016-02-01 2016-02-01 一种洗衣机减速离合器的制动装置
CN201610074946.1 2016-02-01
CN201610071313.5 2016-02-01
CN201610074946.1A CN107022877B (zh) 2016-02-01 2016-02-01 一种洗衣机减速离合器

Publications (1)

Publication Number Publication Date
WO2017133490A1 true WO2017133490A1 (fr) 2017-08-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108442083A (zh) * 2018-05-31 2018-08-24 青岛海尔洗衣机有限公司 一种洗衣机过滤装置及洗衣机

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Publication number Priority date Publication date Assignee Title
JPS59156386A (ja) * 1983-02-28 1984-09-05 松下電器産業株式会社 一槽式洗濯機の減速装置
KR20030046598A (ko) * 2001-12-05 2003-06-18 엘지전자 주식회사 세탁기용 클러치에 있어서의 브레이크 밴드 조립구조
CN1464113A (zh) * 2002-06-07 2003-12-31 乐金电子(天津)电器有限公司 洗衣机制动器的制动带固定结构
KR20050070565A (ko) * 2003-12-30 2005-07-07 엘지전자 주식회사 세탁기의 브레이크 밴드 및 그 제조방법
CN205382329U (zh) * 2016-02-01 2016-07-13 浙江三星机电股份有限公司 一种制动带结构改进的洗衣机减速离合器
CN205382332U (zh) * 2016-02-01 2016-07-13 浙江三星机电股份有限公司 一种洗衣机减速离合器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59156386A (ja) * 1983-02-28 1984-09-05 松下電器産業株式会社 一槽式洗濯機の減速装置
KR20030046598A (ko) * 2001-12-05 2003-06-18 엘지전자 주식회사 세탁기용 클러치에 있어서의 브레이크 밴드 조립구조
CN1464113A (zh) * 2002-06-07 2003-12-31 乐金电子(天津)电器有限公司 洗衣机制动器的制动带固定结构
KR20050070565A (ko) * 2003-12-30 2005-07-07 엘지전자 주식회사 세탁기의 브레이크 밴드 및 그 제조방법
CN205382329U (zh) * 2016-02-01 2016-07-13 浙江三星机电股份有限公司 一种制动带结构改进的洗衣机减速离合器
CN205382332U (zh) * 2016-02-01 2016-07-13 浙江三星机电股份有限公司 一种洗衣机减速离合器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108442083A (zh) * 2018-05-31 2018-08-24 青岛海尔洗衣机有限公司 一种洗衣机过滤装置及洗衣机

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