WO2017114035A1 - 一种洗衣机变阻尼减振装置及洗衣机 - Google Patents

一种洗衣机变阻尼减振装置及洗衣机 Download PDF

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Publication number
WO2017114035A1
WO2017114035A1 PCT/CN2016/107060 CN2016107060W WO2017114035A1 WO 2017114035 A1 WO2017114035 A1 WO 2017114035A1 CN 2016107060 W CN2016107060 W CN 2016107060W WO 2017114035 A1 WO2017114035 A1 WO 2017114035A1
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Prior art keywords
damping
spring
sleeve
washing machine
bracket
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Application number
PCT/CN2016/107060
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English (en)
French (fr)
Inventor
吕佩师
杨林
张刚金
田云
高升成
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合肥海尔洗衣机有限公司
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Publication of WO2017114035A1 publication Critical patent/WO2017114035A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations

Definitions

  • the invention relates to the technical field of washing machines, in particular to a washing machine damping device, in particular to a washing machine variable damping vibration damping device and a washing machine using the same.
  • the existing washing machine is divided into a pulsator washing machine and a drum washing machine, wherein the structure of the pulsator type washing machine comprises: a casing forming an appearance of the washing machine; and an inside of the casing is provided with a suspension member fixed by a supporting member and used for accommodating washing water a barrel; an inner barrel rotatably mounted inside the outer tub and provided with a stirrer at the bottom thereof; a drive motor mounted on the lower side of the outer tub and used to generate a driving force of the agitator and the inner tub; driving force for driving the motor
  • a power transmission device selectively provided to the agitator and the inner tub; a drain device installed at a lower portion of the outer tub and for discharging the washing water contained in the outer tub to the outside, and the outer tub is suspended from the housing by the boom device.
  • the boom device comprises a boom, a boom seat, a ball seat, a spring and a spring seat.
  • the boom seat is arranged at the top of the boom, and the spring seat, the spring and the ball seat are sequentially run upward from the bottom end of the boom to the boom.
  • the ball seat is provided with a friction plate;
  • the washing machine housing is provided with a spherical groove, the convex spherical surface of the hanging rod seat is matched with the spherical groove on the casing;
  • the bottom end of the outer barrel also has a spherical groove, and the spherical seat is convex
  • the spherical surface cooperates with a spherical recess at the bottom end of the outer tub to suspend the inner and outer tubs from the washing machine housing.
  • the vibration generated by the outer tub causes the ball seat to move up and down.
  • the ball seat further generates a damping force by reciprocating friction between the spring and the friction plate and the lifting rod, thereby suppressing the vibration and achieving the purpose of improving the vibration noise level of the whole machine.
  • the internal system vibrates greatly, requiring the boom device to provide a relatively large damping force to suppress internal system vibration; in the steady state of dehydration, the internal system vibration is small, then the boom device is required to provide relatively small Damping force to isolate vibration; and the above-mentioned boom device can only provide a single damping force through the friction plate, and when the boom device is assembled, the ball seat surface will be coated with grease to improve the lubrication condition; therefore, the internal system vibrates a large dehydration instant.
  • Chinese Patent Application No. 200810243936.1 discloses a combined spring damper hanger comprising a rod body, a connecting seat, a mounting seat, a set of springs and a fixing seat, the connecting seat is located at the top end of the rod body, and the rod body is disposed in the washing machine housing through the connecting seat Upper
  • the mounting seat is located at the lower part of the rod body and is used for installing the outer tub of the washing machine;
  • the fixing seat is located at the bottom end of the rod body, a set of springs is set on the rod body and is located between the mounting seat and the fixing seat, and a set of springs are connected in series through the connecting sleeve.
  • the series method does not solve the problem of providing a relatively large damping force at the moment of dehydration to suppress the vibration of the internal system; in addition, if the overall length of the damper is constant, The length of the two sets of springs must be reduced, the elastic coefficient of the two springs is relatively increased, the spring deformation is small, and the damping force cannot be provided in the dehydration stabilization stage; if the length of the existing spring is used, the relative increase is reduced.
  • the overall length of the vibrator reduces the stability of the outer bucket swing, especially when dehydrating, it is easy to eccentrically beat the barrel and generate noise.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a variable damping vibration damping device for a washing machine, which can smoothly change the elastic coefficient of the suspension rod vibration, improve the vibration damping performance, and reduce the vibration and moving distance of the washing machine. And can reduce noise.
  • Another object of the present invention is to provide a washing machine having the variable damping vibration damping device.
  • the utility model relates to a variable damping vibration damping device for a washing machine, which comprises a boom, a lifting bracket, a sleeve and a pressure buffering mechanism arranged in the sleeve.
  • the upper end of the sleeve has a bracket, and the hanging rod penetrates the upper bracket and the bracket, and extends into the sleeve and the pressure.
  • the buffer mechanism is connected, and at least one set of damping sleeves on the boom is disposed between the upper bracket and the pressure buffering mechanism, and the damping sleeve provides a variable damping force to the boom.
  • a damping sleeve between the upper support and the pressure buffer mechanism is disposed between the upper bracket and the bracket, and/or disposed between the bracket and the pressure buffer mechanism, the damping sleeve is deformed, and is pressed inward, and the damping sleeve is The friction between the booms increases.
  • the damping sleeve is provided with a variable damping structure, and the variable damping structure receives the axial pressure, so that the damping sleeve is radially deformed, the inner diameter becomes smaller, and the damping force becomes larger.
  • variable damping structure comprises a first variable damping structure and/or a second variable damping structure
  • first variable damping structure converts the pressure of the damping sleeve axially downward into the radial inward compression of the damping sleeve.
  • the force, the inner diameter is reduced, and the damping force of the boom is increased.
  • the second variable damping structure converts the supporting force of the damping sleeve axially upward into the radial inward pressing force of the damping sleeve, the inner diameter is reduced, and the damping force of the boom is increased.
  • a damping sleeve is disposed between the upper bracket and the bracket, and the damping sleeve includes a tray supporting the upper tray, a support sleeve extending through the tray and extending into the bracket, and a through tray and A hanger mounting hole of the support sleeve, and the tray and/or the support sleeve is provided with a variable damping structure that is forced to reduce the inner diameter of the damping sleeve.
  • the damping sleeve is integrally formed as a T-shaped knot Structure is a damping rubber sleeve.
  • the bracket is provided with an opening upward opening slot
  • the hanger rod extends through the bracket from the mounting slot
  • a gap is formed between the boom and the inner wall of the mounting slot to form a receiving portion for receiving the supporting sleeve
  • the supporting sleeve is arranged
  • the variable damping structure is in press contact with the opening of the mounting groove.
  • the mounting groove extends toward the inside of the sleeve and protrudes from the inner wall of the bracket to form a guiding post for guiding the pressure buffering mechanism.
  • the pressure buffering mechanism comprises a damping spring, a damping spring holder, an oil-containing felt, a sliding cup and a lower supporting pad, wherein the upper end of the damping spring is connected with the bracket support, and the lower end is supported above the damping spring holder, The oil felt, the sliding cup and the lower support pad are sequentially disposed under the vibration-damping spring holder.
  • the pressure buffer mechanism comprises an upper spring seat, a damping spring and a lower spring seat, the damping spring being mounted between the upper spring seat and the lower spring seat, the bracket and the upper spring
  • a damping sleeve is disposed between the seats, the damping sleeve includes a tray supporting the bracket, a support sleeve disposed under the tray and extending into the upper spring seat, and a hanger mounting hole penetrating the tray and the support sleeve, the tray And/or the support sleeve is provided with a variable damping structure that causes the inner diameter of the damping sleeve to become smaller after being stressed.
  • the damping sleeve has a T-shaped structure and is a damping rubber sleeve.
  • the upper part of the upper spring seat is provided with a mounting groove
  • the lower part is provided with a mounting post for locating the vibration-damping spring
  • the hanging rod penetrates the mounting column from the mounting groove, and a gap is formed between the hanging rod and the inner wall of the mounting groove, and the composition is formed.
  • a variable damping structure on the support sleeve is pressed into contact with the opening of the mounting groove.
  • the mounting post is formed to extend downward from the mounting groove.
  • the lower spring seat comprises a vibration-damping spring support, an oil-containing felt, a sliding cup and a lower support pad, wherein the upper end of the vibration-damping spring is supported and connected with the upper spring seat, and the lower end is supported above the vibration-damping spring support, and the oil-containing felt and sliding The cup and the lower support pad are sequentially disposed under the vibration-damping spring holder.
  • the upper surface of the tray is provided with at least one annular protrusion along the outer circumference of the hanger mounting hole, the annular protrusion is gradually lowered from the inside to the outside, and the surface has a curved surface structure, and the annular protrusion is on the tray.
  • the variable damping structure preferably, the upper surface of the tray is provided with two annular protrusions of the same center.
  • the peripheral wall of the support sleeve is provided with at least one compression rib, and the height of the compression rib protruding from the surface of the support sleeve is gradually increased from the bottom to the top in the axial direction of the support sleeve, and the compression rib is a change on the support sleeve.
  • the damping structure preferably, has 3-8 compression ribs and is evenly distributed in the circumferential direction.
  • At least one damping rib is disposed on the inner wall of the hanger mounting hole in the axial direction.
  • the damping ribs are 2-6, and are evenly distributed in the circumferential direction.
  • the pressure buffering mechanism includes a damping spring
  • the damping spring is composed of a first spring and a second spring that are connected in series, and the end of the first spring extends to the inside of the second spring through the connecting support Two spring connections.
  • the first spring has a spring constant k1
  • the connecting support comprises a first supporting portion, a second supporting portion and a connecting portion connecting the two supporting portions, wherein the supporting directions of the two supporting portions are oppositely disposed, and the first supporting portion supports the first spring to extend to the second spring At one end of the inner portion, the second support portion supports one end of the second spring sleeve outside the first spring.
  • the connecting support member has a cylindrical structure, one end is bent inward to form a first supporting portion, and the other end is bent outward to form a second supporting portion, and one end of the first spring extends into the connecting support member to support the first support portion.
  • one end of the second spring is supported on the second support portion outside the connection support.
  • first support portion is bent toward the first spring to form a first limiting portion for positioning the first spring end
  • outer edge of the second supporting portion is bent toward the second spring to form a second spring. a second limit portion of the end.
  • the guide post or the lower end surface of the mounting post is provided with an annular spring positioning mounting groove.
  • the length of the guiding post or the mounting post is not greater than the distance between the second supporting portion and the first supporting portion. That is, no more than the length of the first spring that projects into the interior of the connection support.
  • first spring and the second spring have different elastic systems.
  • the first spring has a spring constant greater than the spring rate of the second spring.
  • the length of the first spring is less than the length of the second spring.
  • the washing machine with the variable damping vibration damping device of the invention has excessive eccentric load when the washing machine starts the dehydration operation, the eccentric force is applied to the outer damper to the damper sleeve, and the damping sleeve radially deforms the squeezing boom, and the damping force becomes large; the dehydration continues When the operation is performed, the eccentric load becomes small, the eccentric force of the outer tub is released to the damper sleeve, the damper sleeve is restored, and the damping force is reduced.
  • the greater the eccentric force the greater the damping force of the damper sleeve on the boom, and the smaller the eccentric force, the smaller the damping force of the damper sleeve on the boom.
  • the total weight of the outer tub also applies pressure to the damper sleeve.
  • the pressure applied to the damper sleeve is the largest, and the damping force is maximum.
  • the damper sleeve is applied. The pressure becomes smaller and the damping force becomes smaller.
  • the present invention has the following advantageous effects compared with the prior art.
  • variable damping vibration damping device of the present invention can make up for the existing damping spring in the dehydration start of the large-capacity washing machine, and the load unevenness is easy to be pressed. And cause loud noise The problem.
  • the washing machine of the invention simultaneously realizes the dual functions of transient dehydration suppression vibration and steady-state dehydration isolation vibration, thereby effectively improving the vibration noise level in the dehydration stage, and effectively avoiding the problem that the vibration damping device is up and down.
  • variable damping vibration damping device of the washing machine of the invention realizes the change of the elastic coefficient in the washing and dehydrating stages, improves the vibration damping performance, reduces the vibration and moving distance of the washing machine and reduces the noise, and improves the damping performance of the general vibration damping component. More than %, generally applicable to the washing machine.
  • the two springs of the pressure buffering mechanism are connected in series, and a series structure in which one spring extends into the other spring reduces the total length of the two springs, and the total spring coefficient also becomes small, because the spring coefficient of the first spring is large, such a washing machine
  • the dewatering load range will be expanded, which can achieve good vibration and noise reduction effects under small load, and can also improve dehydration start performance under large load, and have better effects on the dehydration stability of the washing machine.
  • variable damping effect of the damping sleeve is matched, the problem that the vibration coefficient is abruptly caused by the sudden change of the elastic coefficient is avoided, the vibration damping buffer is more stable, the vibration damping performance is improved, and the vibration is enhanced. Damping effect.
  • FIG. 1 is a schematic structural view of a variable damping device of a washing machine of the present invention
  • FIG. 2 is a schematic cross-sectional structural view of a variable damping vibration damping device of the washing machine of the present invention
  • FIG. 3 is a schematic view showing the assembly structure of the variable damping device of the washing machine of the present invention.
  • FIG. 4 and FIG. 5 are schematic structural views of the damping sleeve of the present invention at different viewing angles;
  • Figure 6 is an enlarged schematic view of a portion A of Figure 2;
  • Figure 7 is a schematic structural view of a connection support member of the present invention.
  • variable damping vibration damping device of the washing machine of the present invention are respectively different structural schematic views of the variable damping vibration damping device of the washing machine of the present invention.
  • the variable damping device of the washing machine of the present invention comprises a boom 1, a support 2, a sleeve 3 and a pressure buffer mechanism disposed in the sleeve 3, and the upper end of the sleeve 3 is integrated.
  • a bracket 6 is disposed, and a bottom cover 30 is mounted on the lower end.
  • the boom 1 extends through the upper bracket 2 and the bracket 6 and extends into the sleeve 3 to be connected with the pressure buffer mechanism.
  • the upper bracket 2 and the pressure buffer mechanism are disposed between the brackets.
  • the damper sleeve 8 between the upper tray 2 and the pressure buffering mechanism is disposed between the upper tray 2 and the bracket 6, and/or disposed in the bracket 6 and the pressure buffer mechanism During the application, an external force is applied to the outer tub of the washing machine to deform the damper sleeve 8 and press inward, and the friction between the damper sleeve 8 and the boom 1 is increased.
  • the damping sleeve 8 is provided with a variable damping structure, and the variable damping structure is subjected to force, the damping sleeve 8 is deformed radially, the inner diameter is reduced, and the lifting rod 1 is squeezed, and the damping force is increased.
  • variable damping structure includes a first variable damping structure 10 and/or a second variable damping structure 11, and the first variable damping structure 10 converts the pressure of the damping sleeve 8 axially downward into a damping sleeve. 8 radially inward pressing force, the inner diameter is reduced, the boom damping force is increased, and the second variable damping structure 11 converts the axial upward support force of the damping sleeve 8 into the radial inward pressing force of the damping sleeve 8. The inner diameter is reduced and the damping force of the boom is increased.
  • the damper sleeve 8 of the present embodiment is disposed between the upper bracket 2 and the bracket 6, and the damper sleeve 8 includes a support bracket.
  • the tray 81 of 2 is provided under the tray 81 and extends into the support sleeve 82 in the bracket 6 and the boom mounting hole 83 which penetrates the tray 81 and the support sleeve 82 in the axial direction.
  • the damping sleeve 8 is a damping rubber sleeve and has a T-shaped integral structure as a whole.
  • the tray 81 is provided with a first variable damping structure 10 that is subjected to a force to reduce the inner diameter of the hanger mounting hole 83, and the first variable damping structure 10 is disposed on the upper end surface of the tray 81.
  • the downward pressure of the upper support 2 is converted into the pressure of the radial deformation of the damping sleeve 8, the inner diameter of the hanger mounting hole 83 is reduced, and the damping force of the suspension rod 1 is increased.
  • the support sleeve 82 is provided with a second variable damping structure 11, and the second variable damping structure 11 converts the support force of the bracket 6 upward to the damping sleeve 8 into a damping sleeve 8 diameter.
  • the inner diameter of the hanger mounting hole 83 is reduced, and the damping force of the boom is increased.
  • the bracket 6 of the present embodiment is provided with an opening-up mounting slot 61.
  • the boom 1 extends through the bracket 6 from the mounting slot 61, and has a ring between the boom 1 and the inner wall of the mounting slot 61.
  • the gap forms a receiving portion 62 for accommodating the support sleeve 82.
  • the second variable damping structure 11 on the support sleeve 82 is pressed into contact with the opening of the mounting groove 61, and the supporting force of the bracket 6 for the second variable damping structure 11 is converted into the inward direction.
  • the pressing force on the boom 1 provides a variable damping force of the boom 1.
  • the mounting groove 61 extends toward the inside of the sleeve 3 and protrudes from the inner wall of the bracket 6 to form a guide post 63 for guiding the pressure buffer mechanism.
  • the pressure buffering mechanism of the present embodiment includes a damping spring 4, a damping spring holder 51, an oil-containing felt 52, a sliding cup 53 and a lower supporting pad 54, and the upper end of the damping spring 4 is
  • the bracket 6 is supported and connected, and the lower end is supported above the damper spring holder 51.
  • the oil-containing felt 52, the sliding cup 53 and the lower support pad 54 are sequentially disposed below the damper spring holder 51.
  • the damper sleeve 8 of the present embodiment is disposed between the bracket 6 and the pressure buffer mechanism, and the pressure buffer mechanism includes an upper spring seat 7, a damper spring 4, and a lower spring seat 5, the damping spring 4 is mounted between the upper spring seat 7 and the lower spring seat 5, the damping sleeve 8 comprising a tray 81 supporting the bracket 6, and extending under the tray 81 to the upper spring seat 7
  • the inner support sleeve 82 and the boom mounting hole 83 that penetrates the tray 81 and the support sleeve 82 in the axial direction.
  • the damping sleeve 8 is a damping rubber sleeve and has a T-shaped integral structure as a whole.
  • the tray 81 is provided with a first variable damping structure 10 (see FIG. 4), which is subjected to a force to reduce the inner diameter of the hanger mounting hole 83.
  • the first variable damping structure 10 is disposed on the upper end surface of the tray 81.
  • the downward pressure of the bracket 6 is converted into the pressure in which the damper sleeve 8 is radially deformed, the inner diameter of the boom mounting hole 83 is reduced, and the damping force of the boom 1 is increased.
  • the support sleeve 82 is provided with a second variable damping structure 11 (see FIG. 5), and the second variable damping structure 11 converts the supporting force of the upper spring seat 7 to the damping sleeve 8 into the radial direction of the damping sleeve 8.
  • the inward pressing force, the inner diameter of the hanger mounting hole 83 is reduced, and the damping force of the boom is increased.
  • the upper spring seat 7 is provided with an opening-up mounting groove 71 in the upper portion, and the lower portion is provided with a mounting post 72 for positioning the damper spring 4, and the boom 1 is inserted through the mounting post from the mounting groove 71. 72.
  • a gap is formed between the boom 1 and the inner wall of the mounting groove 71 to form a receiving portion 73 for receiving the supporting sleeve 82.
  • the compression rib 85 on the supporting sleeve 82 is pressed into contact with the opening of the mounting groove 71 due to the compression rib. 85 is gradually raised from the bottom to the top, and the supporting force of the upper spring seat 7 on the compression rib 85 on the support sleeve 82 is converted into the pressing force of the boom 1 inwardly, thereby providing the variable damping force of the boom 1.
  • the mounting post 72 is formed by the mounting slot 71 extending downward.
  • the lower spring seat 5 of the embodiment includes a vibration-damping spring holder 51, an oil-containing felt 52, a sliding cup 53 and a lower support pad 54.
  • the upper end of the damping spring 4 is supported and connected to the upper spring seat 7, and the lower end is supported by the damping spring.
  • Above the tray 51, the oil-containing felt 52, the sliding cup 53 and the lower support pad 54 are sequentially disposed below the vibration-damping spring holder 51.
  • the embodiment is a combination of the first embodiment and the second embodiment. As shown in FIG. 9, a damping is respectively disposed between the upper bracket 2 and the bracket 6, and between the bracket 6 and the pressure buffer mechanism. Set of 8.
  • the upper surface of the tray 81 of the present embodiment is provided with an annular protrusion 84 along the outer circumference of the hanger mounting hole 83.
  • the annular protrusion 84 is gradually lowered from the inside to the outside, and the surface is curved, and the whole is centered.
  • the hanger mounting hole 83 runs through the center, and the contact surface of the upper bracket 2 and/or the lower portion of the bracket 6 and the upper surface of the tray 81 is concavely matched with the annular projection 84.
  • the annular projection 84 is the first variable damping structure 10 on the tray 81 (see FIG. 6).
  • first variable damping structure 10 is an annular protrusion 84 provided on the inner and outer surfaces of the upper surface of the tray 81.
  • the peripheral wall of the support sleeve 82 of the embodiment is provided with at least one compression rib 85.
  • the height of the compression rib 85 protruding from the surface of the support sleeve 82 is gradually increased from the bottom to the top in the axial direction of the support sleeve 82.
  • the compression rib 85 is a second variable damping structure 11 on the support sleeve 82.
  • One end of the compression rib 85 extending upward is smoothly connected to the lower surface of the tray 81.
  • the compression ribs 85 are 4-6, and are evenly distributed along the circumferential direction of the support sleeve 82.
  • the difference between this embodiment and the fifth embodiment is that the outer diameter of the support sleeve is gradually increased from the bottom to the top, and the upper end of the support sleeve and the lower surface of the tray are smoothly transitioned (not shown).
  • At least one damping rib 86 is disposed on the inner wall of the boom mounting hole 83 in the axial direction.
  • the damping rib 86 is 2-4, along the circumference. The direction is evenly distributed.
  • the damper spring 4 described in the above embodiment of the present invention is a spring (refer to Figs. 10 and 11), or a spring group composed of a combination of at least two springs (refer to Figs. 2, 3, 8, and 9).
  • the damper spring 4 of the present embodiment includes a first spring 41 and a second spring 42 connected in series, and the end of the first spring 41 passes through the connection support. 9 extends to the inside of the second spring 42 to be coupled to the second spring 42.
  • the connecting support member 9 includes a first supporting portion 91, a second supporting portion 92, and a connecting portion 93 connecting the two supporting portions.
  • the supporting directions of the first supporting portion 91 and the second supporting portion 92 are opposite. It is provided that the first support portion 91 supports one end of the first spring 41 extending to the inside of the second spring 42, and the second support portion 92 supports one end of the second spring 42 that is sleeved outside the first spring 41 (refer to FIG. 6).
  • the lower end surface of the guiding post 63 of the lower portion of the bracket 6 is provided with an annular spring positioning mounting groove 64.
  • the upper end of the first spring 41 is positioned and supported by the bracket 6 for installation.
  • the lower end of the second spring 42 is supported on the lower spring seat 5.
  • the lower end surface of the mounting post 72 of the upper spring seat 7 is provided with an annular spring positioning mounting groove 74, and the upper end of the first spring 41 and the upper spring seat 7 are positioned.
  • the support connection is mounted in the annular spring positioning mounting groove 74, and the lower end of the second spring 42 is supported on the lower spring seat 5.
  • the length of the guiding post 63 or the mounting post 72 is not greater than the distance between the second supporting portion 92 to the first supporting portion 91. That is, it is not larger than the length in which the first spring 41 projects into the interior of the connection support 9.
  • connection support member 9 of the present embodiment has a cylindrical structure, one end is bent inward to form a first support portion 91, and the other end is bent outward to form a second support portion 92, and the first spring 41 One end extends into the connection support member 9 and is supported on the first support portion 91.
  • One end of the second spring 42 is supported on the second support portion 92 outside the connection support member 9.
  • first supporting portion 91 is bent toward the first spring 41 to form a first limiting portion 94 for positioning the end of the first spring 41, and the outer edge of the second supporting portion 92 is directed to the second spring 42.
  • the bending forms a second limiting portion 95 that positions the end of the second spring 42.
  • the elastic system of the first spring 41 and the second spring 42 is different in this embodiment.
  • the elastic coefficient of the first spring 41 is greater than the elastic modulus of the second spring 42, and more preferably, the first spring 41 The length is less than the length of the second spring 42.
  • the spring constant of the first spring 41 is k1
  • the spring constant of the second spring 42 is k2
  • the vibration damping device of the present invention simultaneously activates the two springs of the first spring 41 and the second spring 42. After the second spring 42 is pressed and then, the first spring 41 acts.
  • the series structure increases the load carried by the washing machine, and the phenomenon that the total spring coefficient is abrupt will occur later.
  • the boom When subjected to an external force, the boom drives the first spring 41 and the second spring 42 to perform a compression motion.
  • the first spring 41 and the second spring 42 perform a return movement under the action of the self-elastic force, when the first spring When 41 is compressed, part or all of the first spring 41 is compressed into the inside of the second spring 42, which relatively reduces the vibration amplitude of the outer tub.
  • the second spring 42 plays a major role. As the amount of the influent water increases, the second spring 42 gradually weakens until it is pressed and loses the elastic displacement. The first spring 41 acts gradually. When the washing machine is flooded to a full amount of water, the first spring 41 is brought close to the pressed state.
  • the elastic coefficient of the damping spring is designed according to the different conditions of the washing machine under no load and different loads and full load. Calculated and tested for verification.
  • the second spring 42 When water is introduced into the inner tub of the washing machine to increase the weight of the inner tub, the second spring 42 is compressed and deformed under the connecting support member 9, and the first spring 41 is compressed and deformed smaller than the connecting support member 9. Since the second spring 42 is located between the connecting support 9 and the lower spring seat 5, the sleeve 3 moves downward, and the sleeve 3 and the connecting support 9 are displaced relative to the boom 1 until it is located below the connecting support 9. The two springs 42 are pressed and the first spring 41 located above the connection support 9 is gradually compressed.
  • the spring coefficients K1 and K2 of the two springs can be more flexible. Adjusting different elastic coefficients can make the dewatering load load range wider and can carry more dewatering capacity.
  • the washing machine When the washing machine starts at the start of the dehydration process, the washing machine first starts to drain, and after the washing machine discharges a certain amount of water, the first spring 41 starts to be released, and when the first spring 41 has a certain buffering function, the washing machine can perform the low-speed dehydration operation, and the first spring The cushioning displacement of 41 is small, and it is not suitable for high-speed dehydration.
  • the second spring 42 begins to release, and when the second spring 42 has a large cushioning displacement, the high-speed dehydration operation can be performed.
  • the two springs When the invention is dehydrated, the two springs simultaneously play the role of vibration and noise reduction.
  • the running outer tub generates a rocking force.
  • the damping spring connected to the boom 1 is subjected to a force due to the elasticity of the first spring 41.
  • the coefficient is greater than the spring constant of the second spring 42, so that the second spring 42 first exhibits a large displacement when subjected to the rocking force, and when the second spring 42 is fully compressed, the first spring 41 at this time is not completely Compression, when the rocking force temporarily disappears, the second spring 42 and the first spring 41 generate a restoring force, and the damping member releases the rocking force of the outer tub by the restoring force generated by the spring.
  • the present invention is a washing machine having the variable damping vibration damping device according to the above embodiment, and the upper support supports the outer drum hanger seat.
  • the structure is known to those skilled in the art, and will not be further described herein. Since the eccentric load is too large when the washing machine starts the dehydration operation, the outer bucket applies an eccentric force to the damper sleeve 8 of the variable damping damper device of the present invention, and the damper sleeve 8 is axially compressed, and the radial deformation is formed to squeeze the boom 1.
  • the damping force becomes larger; the dehydration continues to operate, the eccentric load becomes smaller, the variable damping damper device releases the eccentric force of the outer barrel to the damper sleeve 8, the damper sleeve 8 recovers, and the damping force becomes smaller.
  • the total weight of the outer tub also applies pressure to the damper sleeve 8.
  • the pressure applied to the damper sleeve 8 is maximum, and the damping force is maximum.
  • the water in the laundry is thrown out and applied to the damper.
  • the pressure of the sleeve 8 becomes smaller, and the damping force becomes smaller.

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  • Textile Engineering (AREA)
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Abstract

一种洗衣机变阻尼减振装置及洗衣机，该变阻尼减振装置包括吊杆（1）、上托（2）、套管（3）及设在套管（3）内的压力缓冲机构，套管（3）上端具有托架（6），吊杆（1）贯穿上托（2）、托架（6），伸至套管（3）内与压力缓冲机构连接，所述的上托（2）和压力缓冲机构之间设有至少一套在吊杆（1）上的阻尼套（8），阻尼套（8）提供给吊杆（1）可变的阻尼力。在洗衣机开始脱水运行时，偏载过大，外桶施加偏心力给阻尼套（8），阻尼套（8）径向形变挤压吊杆（1），阻尼力变大；脱水继续运转，偏载变小，释放外桶给阻尼套（8）的偏心力，阻尼套（8）恢复，阻尼力变小。上述变阻尼减振装置能平稳改变吊杆（1）减振的弹性系数，提高了减振性能，降低了工作噪音，增强了减振效果。

Description

一种洗衣机变阻尼减振装置及洗衣机 技术领域
本发明涉及洗衣机技术领域，具体是洗衣机减振装置，尤其是一种洗衣机变阻尼减振装置及采用该减振装置的洗衣机。
背景技术
现有的洗衣机分为波轮洗衣机和滚筒洗衣机，其中波轮式洗衣机的结构包含有：形成洗衣机外观的壳体；在壳体的内部设有通过支撑构件悬挂固定、并用于容纳洗涤水的外桶；可旋转安装在外桶的内部、并在其底部设置有搅拌器的内桶；安装在外桶的下侧、并用于产生搅拌器及内桶的驱动力的驱动电机；用于将驱动电机的驱动力选择性提供给搅拌器和内桶的动力传递装置；安装在外桶的下部、并用于向外部排出外桶中容纳的洗涤水的排水装置，外桶通过吊杆装置悬挂设置在壳体上。
目前，吊杆装置包括吊杆、吊杆座、球座、弹簧和弹簧座，吊杆座设置在吊杆顶端，弹簧座、弹簧和球座由吊杆的底端依次向上贯穿于吊杆上，球座内套有摩擦片；洗衣机壳体上设置有球面凹槽，吊杆座的凸球面与壳体上的球面凹槽配合；外桶的底端也具有球面凹槽，球座的凸球面与外桶底端的球面凹槽配合，从而将内桶和外桶悬挂在洗衣机壳体上。
洗衣机工作时使外桶产生的振动会造成球座上下运动，球座进而通过弹簧伸缩、摩擦片与吊杆往复摩擦产生阻尼力，从而抑制振动，达到改善整机振动噪音水平的目的。
但是，由于是单个弹簧结构，吊杆弹性系数变化小，在单个弹簧完全压缩后就失去了减振作用，因而在洗衣机洗涤及脱水时，吊杆不能很好的起到减振作用，造成洗衣机振动大以及移动距离大。在脱水瞬态阶段，内部系统振动较大，需要吊杆装置提供相对较大的阻尼力以抑制内部系统振动；在脱水稳态阶段，内部系统振动较小，则需要吊杆装置提供相对较小的阻尼力以隔离振动；而上述吊杆装置通过摩擦片仅能提供单一阻尼力，且吊杆装置组装时，球座表面会涂油脂以改善润滑条件；所以在内部系统振动较大的脱水瞬态阶段，吊杆装置的阻尼力常会难以抑制系统运行中的振动；在内部系统振动较小的脱水稳态阶段，在油脂的粘性作用和吊杆阻尼力作用下，又会导致吊杆装置上下窜动，出现异常振动噪音问题。
申请号为200810243936.1的中国专利公开了一种组合弹簧减振吊杆，包括杆体、连接座、安装座、一组弹簧和固定座，连接座位于杆体的顶端，杆体通过连接座设置在洗衣机壳体上； 安装座位于杆体下部并用来安装洗衣机外桶；固定座位于杆体的底端，一组弹簧套装在杆体上且位于安装座与固定座之间，一组弹簧间通过连接套串联在一起。
上述结构虽然采用一组串联的弹簧提供阻尼力，但是该串联方式并未解决在脱水瞬间提供相对较大的阻尼力以抑制内部系统振动的问题；另外，若减振器总体长度不变，则两组弹簧的长度必须减小，相对增大了两弹簧的弹性系数，弹簧形变较小，不能在脱水稳定阶段，提供较小的阻尼力；若采用现有弹簧的长度，则相对增加了减振器的总体长度，降低了外桶摆动的稳定性，尤其在脱水时，容易偏心打桶，产生噪音。
有鉴于此特，提出本发明。
发明内容
本发明要解决的技术问题在于克服现有技术的不足，提供一种洗衣机变阻尼减振装置，该装置能平稳改变吊杆减振的弹性系数，提高减振性能，减小洗衣机振动和移动距离，并能降低噪音。
本发明的另一目的在于提供具有该变阻尼减振装置的洗衣机。
为解决上述技术问题，本发明采用技术方案的基本构思是：
一种洗衣机变阻尼减振装置，包括吊杆、上托、套管及设在套管内的压力缓冲机构，套管上端具有托架，吊杆贯穿上托、托架，伸至套管内与压力缓冲机构连接，所述的上托和压力缓冲机构之间设有至少一套在吊杆上的阻尼套，阻尼套提供给吊杆可变的阻尼力。进一步的，上托和压力缓冲机构中间的阻尼套设置在上托和托架之间，和/或设置在托架和压力缓冲机构之间，阻尼套发生形变，向内挤压，阻尼套与吊杆之间的摩擦力增加。
进一步的，所述的阻尼套上设有变阻尼结构，变阻尼结构承受轴向上的压力，使得阻尼套径向形变，内径变小，阻尼力变大。
进一步的，所述的变阻尼结构包括第一变阻尼结构和/或第二变阻尼结构，第一变阻尼结构将轴向向下对阻尼套的压力转换为阻尼套径向向内的挤压力，内径缩小，吊杆阻尼力变大，第二变阻尼结构将轴向向上对阻尼套的支撑力转换为阻尼套径向向内的挤压力，内径缩小，吊杆阻尼力变大。
进一步的方案为，所述的上托和托架之间设有一阻尼套，所述的阻尼套包括一支撑上托的托盘、设于托盘下方伸入至托架内的支撑套和贯穿托盘与支撑套的吊杆安装孔，所述的托盘和/或支撑套上设有受力后使得阻尼套内径变小的变阻尼结构。所述的阻尼套一体呈T形结 构，为阻尼橡胶套。
进一步的，所述的托架设有开口向上的安装槽，吊杆从安装槽内贯穿托架，吊杆与安装槽内壁之间具有一圈空隙，构成容纳支撑套的容纳部，支撑套上的变阻尼结构与安装槽的开口挤压接触，优选的，安装槽向套管内部延伸凸出于托架内壁形成一引导压力缓冲机构的导向柱。
进一步的，所述的压力缓冲机构包括减振弹簧、减振弹簧托、含油毛毡、滑动皮碗及下支撑垫，减振弹簧上端与托架支撑连接，下端支撑在减振弹簧托上方，含油毛毡、滑动皮碗及下支撑垫依次设于减振弹簧托下方。
或者，进一步的替换方案为，所述的压力缓冲机构包括上弹簧座、减振弹簧和下弹簧座，减振弹簧安装在上弹簧座和下弹簧座之间，所述的托架和上弹簧座之间设有阻尼套，所述的阻尼套包括一支撑托架的托盘、设于托盘下方伸入至上弹簧座内的支撑套和贯穿托盘与支撑套的吊杆安装孔，所述的托盘和/或支撑套上设有受力后使得阻尼套内径变小的变阻尼结构。所述的阻尼套一体呈T形结构，为阻尼橡胶套。
进一步的，所述的上弹簧座上部设有安装槽，下部设有定位减振弹簧的安装柱，吊杆从安装槽内贯穿安装柱，吊杆与安装槽内壁之间具有一圈空隙，构成容纳支撑套的容纳部，支撑套上的变阻尼结构与安装槽的开口挤压接触，优选的，所述的安装柱由所述安装槽向下延伸构成。
进一步的，所述的下弹簧座包括减振弹簧托、含油毛毡、滑动皮碗及下支撑垫，减振弹簧上端与上弹簧座支撑连接，下端支撑在减振弹簧托上方，含油毛毡、滑动皮碗及下支撑垫依次设于减振弹簧托下方。
进一步的，所述的托盘上表面沿吊杆安装孔外周设有至少一环状凸起，环状凸起自内向外渐低，表面呈弧面结构，所述环状凸起为托盘上的变阻尼结构，优选的，托盘上表面设有两个同圆心的环状凸起。
进一步的，所述的支撑套周壁上设有至少一压缩凸筋，压缩凸筋突出于支撑套表面的高度沿支撑套轴向从下向上渐高，所述压缩凸筋为支撑套上的变阻尼结构，优选的，压缩凸筋为3-8条，沿圆周方向均匀分布。
进一步的，所述吊杆安装孔的内壁上沿轴向设有至少一阻尼凸筋，优选的，阻尼凸筋为2-6条，沿圆周方向均匀分布。
进一步的，所述的压力缓冲机构包括减振弹簧，减振弹簧由串联相接的第一弹簧和第二弹簧构成，第一弹簧的端部通过连接支撑件延伸至第二弹簧的内部与第二弹簧连接。第一弹簧的弹性系数为k1，第二弹簧的弹性系数为k2，k1＞k2，总的弹性系数为k＝1/(1/k1+1/k2)。
进一步的，所述的连接支撑件包括第一支撑部、第二支撑部和连接两支撑部的连接部，两支撑部的支撑方向相对设置，第一支撑部支撑第一弹簧延伸至第二弹簧内部的一端，第二支撑部支撑第二弹簧套在第一弹簧外部的一端。
进一步的，所述的连接支撑件为筒形结构，一端向内弯折形成第一支撑部，另一端向外弯折形成第二支撑部，第一弹簧一端伸入连接支撑件内部支撑在第一支撑部上，第二弹簧一端套在连接支撑件外部支撑在第二支撑部上。
进一步的，所述的第一支撑部内边沿向第一弹簧方向弯折形成定位第一弹簧端部的第一限位部，第二支撑部外边沿向第二弹簧方向弯折形成定位第二弹簧端部的第二限位部。
进一步的，所述的导向柱或安装柱下端面设有环形的弹簧定位安装槽，优选的，导向柱或安装柱的长度不大于第二支撑部至第一支撑部之间的距离。也即，不大于第一弹簧伸入连接支撑件内部的长度。
进一步的，所述的第一弹簧和第二弹簧的弹性系统不同。
优选的，第一弹簧的弹性系数大于第二弹簧的弹性系数。
更优选的，所述第一弹簧的长度小于第二弹簧的长度。
本发明具有上述变阻尼减振装置的洗衣机，在洗衣机开始脱水运行时，偏载过大，外桶施加偏心力给阻尼套，阻尼套径向形变挤压吊杆，阻尼力变大；脱水继续运转，偏载变小，释放外桶给阻尼套的偏心力，阻尼套恢复，阻尼力变小。
进一步的，偏心力越大，阻尼套对吊杆的阻尼力越大，偏心力越小，阻尼套对吊杆的阻尼力越小。
进一步的，外桶总重量还给阻尼套施加压力，开始脱水运行时，施加给阻尼套的压力最大，阻尼力最大，脱水过程中，随着衣物中的水被甩出，施加给阻尼套的压力变小，阻尼力变小。
采用上述技术方案后，本发明与现有技术相比具有以下有益效果。
目前的洗衣机容量越来越大，脱水启动的问题越来越难解决，使用本发明变阻尼减振装置，能够弥补现有的减振弹簧在大容量洗衣机脱水启动时的，负载不均容易压并引起噪音大 的问题。
本发明所述的洗衣机同时实现了瞬态脱水抑制振动和稳态脱水隔离振动的双重功能，进而能够有效改善脱水阶段的振动噪音水平，也有效避免了减振装置上下窜动的问题。
本发明所述的洗衣机变阻尼减振装置，在洗涤和脱水阶段实现弹性系数的改变，提高了减振性能，减小洗衣机振动和移动距离以及降低噪音，比一般的减振部件阻尼性能提升50％以上，普遍适用于波轮洗衣机。
压力缓冲机构的两个弹簧串联，采用一弹簧伸入另一弹簧的串联结构，减少了两弹簧总的长度，总的弹簧系数也会变小，由于第一弹簧的弹簧系数较大，这样洗衣机的脱水承载范围会扩大，能够在小负载时起到很好的减振降噪效果，也能在较大负载时，提高脱水启动性能，对于洗衣机的脱水稳定性起到更好的效果。
本发明两个串联弹簧同时起作用时，配合阻尼套的变阻尼效果，避免了弹性系数突变导致减振装置上下窜动的问题，使得减振缓冲更为平稳，提高了减振性能，增强了减振效果。
附图说明
图1是本发明洗衣机变阻尼减振装置结构示意图；
图2是本发明洗衣机变阻尼减振装置断面结构示意图；
图3是本发明洗衣机变阻尼减振装置装配结构示意图；
图4和图5是本发明阻尼套不同视角的结构示意图；
图6是图2中的A部放大示意图；
图7是本发明连接支撑件的结构示意图；
图8至图11分别是本发明洗衣机变阻尼减振装置的其它不同结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步详细的描述。
如图1至图11所示，本发明所述的洗衣机变阻尼减振装置，包括吊杆1、上托2、套管3及设在套管3内的压力缓冲机构，套管3上端一体设有托架6，下端安装有底盖30，吊杆1贯穿上托2、托架6，伸至套管3内与压力缓冲机构连接，所述的上托2和压力缓冲机构之间设有至少一套在吊杆1上的阻尼套8，阻尼套8提供给吊杆1可变的阻尼力。上托2和压力缓冲机构中间的阻尼套8设置在上托2和托架6之间，和/或设置在托架6和压力缓冲机构之 间，洗衣机外桶施加外力使得阻尼套8发生形变，向内挤压，阻尼套8与吊杆1之间的摩擦力增加。
进一步的，所述的阻尼套8上设有变阻尼结构，变阻尼结构受力，阻尼套8径向发生形变，内径变小，挤压吊杆1，阻尼力增大。
如图4和图5所示，变阻尼结构包括第一变阻尼结构10和/或第二变阻尼结构11，第一变阻尼结构10将轴向向下对阻尼套8的压力转换为阻尼套8径向向内的挤压力，内径缩小，吊杆阻尼力变大，第二变阻尼结构11将轴向向上对阻尼套8的支撑力转换为阻尼套8径向向内的挤压力，内径缩小，吊杆阻尼力变大。
实施例一
如图2、图3、图6和图10所示，本实施例所述的阻尼套8设于所述的上托2和托架6之间，所述的阻尼套8包括一支撑上托2的托盘81、设于托盘81下方伸入至托架6内的支撑套82和轴向贯穿托盘81与支撑套82的吊杆安装孔83。所述的阻尼套8为阻尼橡胶套，整体呈T形一体结构。
进一步的，如图4所示，所述的托盘81上设有受力后使得吊杆安装孔83内径变小的第一变阻尼结构10，第一变阻尼结构10设于托盘81上端面上支撑上托2，上托2向下的压力转换为阻尼套8径向形变的压力，吊杆安装孔83内径缩小，吊杆1的阻尼力增大。
和/或，如图5所示，所述的支撑套82上设有第二变阻尼结构11，第二变阻尼结构11将托架6向上对阻尼套8的支撑力转换为阻尼套8径向向内的挤压力，吊杆安装孔83内径缩小，吊杆阻尼力变大。
如图6所示，本实施例所述的托架6设有开口向上的安装槽61，吊杆1从安装槽61内贯穿托架6，吊杆1与安装槽61内壁之间具有一圈空隙，构成容纳支撑套82的容纳部62，支撑套82上的第二变阻尼结构11与安装槽61的开口挤压接触，托架6对第二变阻尼结构11的支撑力转换成向内对吊杆1的挤压力，从而提供吊杆1的可变阻尼力。
优选的，安装槽61向套管3内部延伸凸出于托架6内壁形成一引导压力缓冲机构的导向柱63。
如图2和图3所示，本实施例所述的压力缓冲机构包括减振弹簧4、减振弹簧托51、含油毛毡52、滑动皮碗53及下支撑垫54，减振弹簧4上端与托架6支撑连接，下端支撑在减振弹簧托51上方，含油毛毡52、滑动皮碗53及下支撑垫54依次设于减振弹簧托51的下方。
实施例二
如图8和图11所示，本实施例所述的阻尼套8设于所述的托架6和压力缓冲机构之间，所述的压力缓冲机构包括上弹簧座7、减振弹簧4和下弹簧座5，减振弹簧4安装在上弹簧座7和下弹簧座5之间，所述的阻尼套8包括一支撑托架6的托盘81、设于托盘81下方伸入至上弹簧座7内的支撑套82和轴向贯穿托盘81与支撑套82的吊杆安装孔83。所述的阻尼套8为阻尼橡胶套，整体呈T形一体结构。
进一步的，所述的托盘81上设有受力后使得吊杆安装孔83内径变小的第一变阻尼结构10(参阅图4)，第一变阻尼结构10设于托盘81上端面上支撑托架6，托架6向下的压力转换为阻尼套8径向形变的压力，吊杆安装孔83内径缩小，吊杆1的阻尼力增大。
和/或，所述的支撑套82上设有第二变阻尼结构11(参阅图5)，第二变阻尼结构11将上弹簧座7对阻尼套8的支撑力转换为阻尼套8径向向内的挤压力，吊杆安装孔83内径缩小，吊杆阻尼力变大。
如图8所示，本实施例所述的上弹簧座7上部设有开口向上的安装槽71，下部设有定位减振弹簧4的安装柱72，吊杆1从安装槽71内贯穿安装柱72，吊杆1与安装槽71内壁之间具有一圈空隙，构成容纳支撑套82的容纳部73，支撑套82上的压缩凸筋85与安装槽71的开口挤压接触，由于压缩凸筋85从下向上渐高，上弹簧座7对支撑套82上压缩凸筋85的支撑力转换成向内对吊杆1的挤压力，从而提供吊杆1的可变阻尼力。
优选的，所述的安装柱72由所述安装槽71向下延伸构成。
本实施例所述的下弹簧座5包括减振弹簧托51、含油毛毡52、滑动皮碗53及下支撑垫54，减振弹簧4上端与上弹簧座7支撑连接，下端支撑在减振弹簧托51上方，含油毛毡52、滑动皮碗53及下支撑垫54依次设于减振弹簧托51的下方。
实施例三
本实施例为实施例一和实施例二的结合，如图9所示，所述的上托2和托架6之间，及所述的托架6和压力缓冲机构之间分别设有一阻尼套8。
实施例四
如图4所示，本实施例所述的托盘81上表面沿吊杆安装孔83外周设有环状凸起84，环状凸起84自内向外渐低，表面为弧面，整体呈中心贯穿的球缺状结构，吊杆安装孔83贯穿中心，所述的上托2和/或托架6下部与托盘81上表面的接触面为与环状凸起84匹配的凹状 压合面(参阅图6)，所述的环状凸起84为托盘81上的第一变阻尼结构10。
进一步的，第一变阻尼结构10为设于托盘81上表面的内、外两个同圆心的环状凸起84。
实施例五
如图5所示，本实施例所述的支撑套82周壁上设有至少一压缩凸筋85，压缩凸筋85突出于支撑套82表面的高度沿支撑套82轴向从下向上渐高，所述压缩凸筋85为支撑套82上的第二变阻尼结构11。压缩凸筋85向上延伸的一端与托盘81下表面平滑过渡连接。
优选的，压缩凸筋85为4-6条，沿支撑套82的圆周方向均匀分布。
实施例六
本实施例与实施例五的区别在于，所述的支撑套自下向上外径逐渐增大，支撑套上端与托盘下表面平滑过渡(图中未示出)。
实施例七
如图4和图5所示，本实施例于所述吊杆安装孔83的内壁上沿轴向设有至少一阻尼凸筋86，优选的，阻尼凸筋86为2-4条，沿圆周方向均匀分布。
本发明上述实施例中所述的减振弹簧4为一根弹簧(参阅图10和图11)，或者为由至少两根弹簧组合构成的弹簧组(参阅图2、图3、图8和图9)。
实施例八
如图2、图3、图8和图9所示，本实施例所述的减振弹簧4包括第一弹簧41和第二弹簧42串联相接，第一弹簧41的端部通过连接支撑件9延伸至第二弹簧42的内部与第二弹簧42连接。
如图7所示，所述的连接支撑件9包括第一支撑部91、第二支撑部92和连接两支撑部的连接部93，第一支撑部91和第二支撑部92的支撑方向相对设置，第一支撑部91支撑第一弹簧41延伸至第二弹簧42内部的一端，第二支撑部92支撑第二弹簧42套在第一弹簧41外部的一端(参阅图6)。
进一步的，如图6所示，与实施例一结合，托架6下部的导向柱63下端面设有环形的弹簧定位安装槽64，第一弹簧41的上端与托架6定位支撑连接，安装在环形的弹簧定位安装槽64内，第二弹簧42下端支撑在下弹簧座5上。如图8所示，与实施例二结合，上弹簧座7的安装柱72下端面设有环形的弹簧定位安装槽74，第一弹簧41的上端与上弹簧座7定位 支撑连接，安装在环形的弹簧定位安装槽74内，第二弹簧42下端支撑在下弹簧座5上。
优选的，导向柱63或安装柱72的长度不大于第二支撑部92至第一支撑部91之间的距离。也即，不大于第一弹簧41伸入连接支撑件9内部的长度。
实施例九
如图7所示，本实施例所述的连接支撑件9为筒形结构，一端向内弯折形成第一支撑部91，另一端向外弯折形成第二支撑部92，第一弹簧41一端伸入连接支撑件9内部支撑在第一支撑部91上，第二弹簧42一端套在连接支撑件9外部支撑在第二支撑部92上。
进一步的，所述的第一支撑部91内边沿向第一弹簧41方向弯折形成定位第一弹簧41端部的第一限位部94，第二支撑部92外边沿向第二弹簧42方向弯折形成定位第二弹簧42端部的第二限位部95。
实施例十
本实施例所述的第一弹簧41和第二弹簧42的弹性系统不同，优选的，第一弹簧41的弹性系数大于第二弹簧42的弹性系数，更优选的，所述第一弹簧41的长度小于第二弹簧42的长度。
第一弹簧41的弹性系数为k1，第二弹簧42的弹性系数为k2，k1＞k2，总的弹性系数为k＝1/(1/k1+1/k2)。
本发明减振装置在第二弹簧42压并之前，是第一弹簧41和第二弹簧42两个弹簧同时起作用。第二弹簧42压并之后，才是第一弹簧41起作用。该串联结构增大了洗衣机承载的负荷，总的弹簧系数突变的现象会较晚出现。
当受到外力作用时，吊杆带动第一弹簧41和第二弹簧42做压缩运动，当外力消失时，在自身弹力作用下，第一弹簧41和第二弹簧42做回复运动，当第一弹簧41被压缩时，第一弹簧41的部分或全部被压缩至第二弹簧42内部，相对减少了外桶的振动幅度。
实施例十一
洗衣机空载时，第二弹簧42起主要作用，随着进水水量的增加，第二弹簧42作用逐渐减弱直至被压并，失去弹性位移。第一弹簧41作用逐渐增大。到洗衣机进水到满水量时，第一弹簧41接近被压并的状态。
减振弹簧的弹性系数的设计是分别根据洗衣机空载及不同负载以及满负载等多种条件下 计算和测试验证出来的。
在洗衣机内桶中进水而使内桶重量增加时，位于连接支撑件9下方第二弹簧42压缩形变较大，位于连接支撑件9上方第一弹簧41压缩形变较小。由于第二弹簧42位于连接支撑件9与下弹簧座5之间，套管3向下运动，套管3及连接支撑件9一同与吊杆1发生相对位移，直至位于连接支撑件9下方第二弹簧42被压并，位于连接支撑件9上方的第一弹簧41同时被逐渐压缩。
在洗衣机脱水阶段，第一弹簧41和第二弹簧42两个弹簧同时起作用，由于两个弹簧同时起作用时串联结构的弹簧系数为k＝1/(1/k1+1/k2)，因此两个弹簧的弹性系数K1、K2匹配可以更为灵活，调整不同的弹性系数可以使脱水承载负荷范围更宽，能够承载更多的脱水容量。
洗衣机在脱水程序开始时，洗衣机先开始排水，洗衣机排出一定的水量后，第一弹簧41开始释放，第一弹簧41具有一定的缓冲功能时，洗衣机就可以进行低速脱水运行，这时第一弹簧41的缓冲位移较小，不适宜进行高速的脱水。当水快要排完时，第二弹簧42开始释放，当第二弹簧42具有较大的缓冲位移时就可以进行高速脱水运行了。本发明在脱水时，两个弹簧同时起到减振降噪的作用。
具体的，在脱水运行过程中，运行中的外桶产生摇摆力，当摇摆力作用于吊杆1时，与吊杆1相连接的减振弹簧受到力的作用，由于第一弹簧41的弹性系数大于第二弹簧42的弹性系数，因此在受到摇摆力作用时，第二弹簧42首先出现较大的位移，当第二弹簧42被完全压缩时，此时的第一弹簧41并未被完全压缩，当摇摆力短暂消失时，第二弹簧42及第一弹簧41产生回复力，通过弹簧产生的回复力，减振部件将外桶的摇摆力消耗释放。
实施例十二
本发明为具有上述实施例中所述变阻尼减振装置的洗衣机，上托支撑外桶吊杆座，该结构为本领域技术人员所了解的技术，在此不再一一赘述。由于洗衣机在开始脱水运行时，偏载过大，外桶会施加偏心力给本发明所述变阻尼减振装置的阻尼套8，阻尼套8轴向压缩，径向产生形变从而挤压吊杆1，阻尼力变大；脱水继续运转，偏载变小，变阻尼减振装置释放外桶给阻尼套8的偏心力，阻尼套8恢复，阻尼力变小。
进一步的，偏心力越大，阻尼套8对吊杆1的阻尼力越大，偏心力越小，阻尼套8对吊杆1的阻尼力越小。
进一步的，外桶总重量还给阻尼套8施加压力，开始脱水运行时，施加给阻尼套8的压力最大，阻尼力最大，脱水过程中，随着衣物中的水被甩出，施加给阻尼套8的压力变小，阻尼力变小。
上述实施例中的实施方案可以进一步组合或者替换，且实施例仅仅是对本发明的优选实施例进行描述，并非对本发明的构思和范围进行限定，在不脱离本发明设计思想的前提下，本领域中专业技术人员对本发明的技术方案作出的各种变化和改进，均属于本发明的保护范围。

Claims (10)

  1. 一种洗衣机变阻尼减振装置，包括吊杆、上托、套管及设在套管内的压力缓冲机构，套管上端具有托架，吊杆贯穿上托、托架，伸至套管内与压力缓冲机构连接，其特征在于：所述的上托和压力缓冲机构之间设有至少一套装在吊杆上的阻尼套，阻尼套提供给吊杆可变的阻尼力。
  2. 根据权利要求1所述的一种洗衣机变阻尼减振装置，其特征在于：所述的阻尼套上设有变阻尼结构，变阻尼结构承受轴向上的压力，使得阻尼套径向形变，内径变小，阻尼力变大。
  3. 根据权利要求2所述的一种洗衣机变阻尼减振装置，其特征在于：所述的变阻尼结构包括第一变阻尼结构和/或第二变阻尼结构，第一变阻尼结构将轴向向下对阻尼套的压力转换为阻尼套径向向内的挤压力，内径缩小，吊杆阻尼力变大，第二变阻尼结构将轴向向上对阻尼套的支撑力转换为阻尼套径向向内的挤压力，内径缩小，吊杆阻尼力变大。
  4. 根据权利要求1所述的一种洗衣机变阻尼减振装置，其特征在于：所述的上托和托架之间设有一阻尼套，所述的阻尼套包括一支撑上托的托盘、设于托盘下方伸入至托架内的支撑套和贯穿托盘与支撑套的吊杆安装孔，所述的托盘和/或支撑套上设有受力后使得阻尼套内径变小的变阻尼结构；
    优选的，所述的托架设有开口向上的安装槽，吊杆从安装槽内贯穿托架，吊杆与安装槽内壁之间具有一圈空隙，构成容纳支撑套的容纳部，支撑套上的变阻尼结构与安装槽的开口挤压接触，优选的，安装槽向套管内部延伸凸出于托架内壁形成一引导压力缓冲机构的导向柱；
    还优选的，所述的压力缓冲机构包括减振弹簧、减振弹簧托、含油毛毡、滑动皮碗及下支撑垫，减振弹簧上端与托架支撑连接，下端支撑在减振弹簧托上方，含油毛毡、滑动皮碗及下支撑垫依次设于减振弹簧托下方。
  5. 根据权利要求1所述的一种洗衣机变阻尼减振装置，其特征在于：所述的压力缓冲机构包括上弹簧座、减振弹簧和下弹簧座，减振弹簧安装在上弹簧座和下弹簧座之间，所述的托架和上弹簧座之间设有阻尼套，所述的阻尼套包括一支撑托架的托盘、设于托盘下方伸入至上弹簧座内的支撑套和贯穿托盘与支撑套的吊杆安装孔，所述的托盘和/或支撑套上设有受力后使得阻尼套内径变小的变阻尼结构；
    优选的，所述的上弹簧座上部设有安装槽，下部设有定位减振弹簧的安装柱，吊杆从安装槽内贯穿安装柱，吊杆与安装槽内壁之间具有一圈空隙，构成容纳支撑套的容纳部，支撑套上的变阻尼结构与安装槽的开口挤压接触，优选的，所述的安装柱由所述安装槽向 下延伸构成；
    还优选的，所述的下弹簧座包括减振弹簧托、含油毛毡、滑动皮碗及下支撑垫，减振弹簧上端与上弹簧座支撑连接，下端支撑在减振弹簧托上方，含油毛毡、滑动皮碗及下支撑垫依次设于减振弹簧托下方。
  6. 根据权利要求4或5所述的一种洗衣机变阻尼减振装置，其特征在于：所述的托盘上表面沿吊杆安装孔外周设有至少一环状凸起，环状凸起自内向外渐低，表面呈弧面结构，所述环状凸起为托盘上的变阻尼结构，优选的，托盘上表面设有两个同圆心的环状凸起。
  7. 根据权利要求4-6任一所述的一种洗衣机变阻尼减振装置，其特征在于：所述的支撑套周壁上设有至少一压缩凸筋，压缩凸筋突出于支撑套表面的高度沿支撑套轴向从下向上渐高，所述压缩凸筋为支撑套上的变阻尼结构，优选的，压缩凸筋为3-8条，沿圆周方向均匀分布。
  8. 根据权利要求4-7任一所述的一种洗衣机变阻尼减振装置，其特征在于：所述吊杆安装孔的内壁上沿轴向设有至少一阻尼凸筋，优选的，阻尼凸筋为2-6条，沿圆周方向均匀分布。
  9. 根据权利要求1所述的一种洗衣机变阻尼减振装置，其特征在于：所述的压力缓冲机构包括减振弹簧，减振弹簧由串联相接的第一弹簧和第二弹簧构成，第一弹簧的端部通过连接支撑件延伸至第二弹簧的内部与第二弹簧连接；
    优选的，所述的连接支撑件包括第一支撑部、第二支撑部和连接两支撑部的连接部，两支撑部的支撑方向相对设置，第一支撑部支撑第一弹簧延伸至第二弹簧内部的一端，第二支撑部支撑第二弹簧套在第一弹簧外部的一端；
    优选的，所述的第一弹簧和第二弹簧的弹性系统不同；
    优选的，第一弹簧的弹性系数大于第二弹簧的弹性系数；
    更优选的，所述第一弹簧的长度小于第二弹簧的长度。
  10. 一种洗衣机，其特征在于：具有如权利要求1-9任一所述的洗衣机变阻尼减振装置，上托支撑外桶吊杆座，在洗衣机开始脱水运行时，偏载过大，外桶施加偏心力给阻尼套，阻尼套径向形变挤压吊杆，阻尼力变大；脱水继续运转，偏载变小，释放外桶给阻尼套的偏心力，阻尼套恢复，阻尼力变小。
PCT/CN2016/107060 2015-12-30 2016-11-24 一种洗衣机变阻尼减振装置及洗衣机 WO2017114035A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113249932A (zh) * 2020-02-13 2021-08-13 青岛海尔洗衣机有限公司 一种吊杆组件及洗衣机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108070981B (zh) * 2016-11-10 2020-06-26 青岛胶南海尔洗衣机有限公司 一种洗衣机减震装置及洗衣机
CN108070982B (zh) 2016-11-10 2020-07-10 青岛胶南海尔洗衣机有限公司 一种洗衣机减震装置及洗衣机
CN109793566B (zh) * 2019-01-11 2020-08-25 温月云 一种骨科用防回移的取钉装置
CN112342743B (zh) * 2019-08-09 2024-03-19 青岛海尔洗衣机有限公司 一种洗衣机的减振装置及洗衣机
CN113638195A (zh) * 2020-05-11 2021-11-12 青岛海尔洗衣机有限公司 一种吊杆组件及洗衣机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62122698A (ja) * 1985-10-30 1987-06-03 株式会社日立製作所 洗濯機の防振装置
JP2000107488A (ja) * 1998-10-08 2000-04-18 Toshiba Corp 洗濯機の防振装置
JP2000237491A (ja) * 1999-02-24 2000-09-05 Toshiba Corp 洗濯機の槽体吊持装置
CN2851319Y (zh) * 2005-08-03 2006-12-27 无锡小天鹅股份有限公司 洗衣机悬挂装置
CN2892927Y (zh) * 2005-08-03 2007-04-25 无锡小天鹅股份有限公司 一种悬挂装置的缓冲结构
CN102954147A (zh) * 2012-11-13 2013-03-06 合肥荣事达三洋电器股份有限公司 一种可变阻尼吊杆减振装置
CN204570278U (zh) * 2015-03-26 2015-08-19 合肥美的洗衣机有限公司 用于洗衣机的弹性悬挂系统及具有其的洗衣机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08215477A (ja) * 1995-02-13 1996-08-27 Hitachi Ltd 電気洗濯機の防振装置
CN101429718A (zh) * 2008-12-15 2009-05-13 南京乐金熊猫电器有限公司 组合弹簧减震吊杆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62122698A (ja) * 1985-10-30 1987-06-03 株式会社日立製作所 洗濯機の防振装置
JP2000107488A (ja) * 1998-10-08 2000-04-18 Toshiba Corp 洗濯機の防振装置
JP2000237491A (ja) * 1999-02-24 2000-09-05 Toshiba Corp 洗濯機の槽体吊持装置
CN2851319Y (zh) * 2005-08-03 2006-12-27 无锡小天鹅股份有限公司 洗衣机悬挂装置
CN2892927Y (zh) * 2005-08-03 2007-04-25 无锡小天鹅股份有限公司 一种悬挂装置的缓冲结构
CN102954147A (zh) * 2012-11-13 2013-03-06 合肥荣事达三洋电器股份有限公司 一种可变阻尼吊杆减振装置
CN204570278U (zh) * 2015-03-26 2015-08-19 合肥美的洗衣机有限公司 用于洗衣机的弹性悬挂系统及具有其的洗衣机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113249932A (zh) * 2020-02-13 2021-08-13 青岛海尔洗衣机有限公司 一种吊杆组件及洗衣机
CN113249932B (zh) * 2020-02-13 2024-05-24 青岛海尔洗衣机有限公司 一种吊杆组件及洗衣机

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