阅读说明：本技术 一种洗衣机皮带轮装置及滚筒洗衣机 (Washing machine belt pulley device and drum washing machine ) 是由 余天平 华科伟 周子江 王世名 吕刚华 于 2021-09-01 设计创作，主要内容包括：本发明提供一种洗衣机皮带轮装置及滚筒洗衣机,包括轮缘、轮轴、轮盘,轮缘沿其周向均匀设置有多组顶块,轮缘上设置有供顶块通过的贯通孔,贯通孔的内壁上设置有沿径向延伸且与顶块侧壁的滑块滑动连接的滑槽；轮缘的内侧同轴转动连接有一驱动环,驱动环朝向顶块的一侧设置有第一螺纹槽,且顶块的侧壁上设置有与第一螺纹槽螺纹连接的第二螺纹槽,驱动环的内侧还设置有内齿圈,轮缘的内侧安装有用于驱动驱动环转动的驱动电机,本发明不仅能够在皮带轮、皮带接触面出现磨损打滑,或是皮带出现松弛后,都能够实现对于皮带的绷紧操作,而且也可以提高皮带绷紧时的受力均衡性效果,在提高皮带轮强度的基础上还能够降低整体的质量。(The invention provides a washing machine belt pulley device and a drum washing machine, comprising a rim, a wheel shaft and a wheel disc, wherein the rim is uniformly provided with a plurality of groups of ejector blocks along the circumferential direction of the rim; the inner side of the rim is coaxially and rotatably connected with a driving ring, one side of the driving ring, which faces the top block, is provided with a first thread groove, the side wall of the top block is provided with a second thread groove in threaded connection with the first thread groove, the inner side of the driving ring is also provided with an inner gear ring, and the inner side of the rim is provided with a driving motor for driving the driving ring to rotate.)

1. A washing machine belt pulley device comprises a rim matched with a conveying belt, a wheel shaft positioned in the rim and in transmission fit with a transmission shaft, and a wheel disc connected between the rim and the wheel shaft, and is characterized in that a plurality of groups of ejector blocks are uniformly arranged on the rim along the circumferential direction of the rim, a through hole for the ejector block to pass through is formed in the rim, and a sliding groove which extends along the radial direction and is in sliding connection with a sliding block on the side wall of the ejector block is formed in the inner wall of the through hole; the inner side of the rim is coaxially and rotatably connected with a driving ring, one side of the driving ring, which faces the top block, is provided with a first thread groove, the side wall of the top block is provided with a second thread groove in threaded connection with the first thread groove, the inner side of the driving ring is also provided with an inner gear ring, the inner side of the rim is provided with a driving motor for driving the driving ring to rotate, and the driving ring can drive the top block to synchronously eject outwards along the radial direction under the driving of the driving motor.

2. The pulley apparatus of claim 1, wherein the rim is provided at an outer side thereof with beads enclosing both sides of the conveyor belt.

3. The washing machine pulley device according to claim 2, wherein the outer end of the wheel disc is provided with two sets of connection inclined plates symmetrically distributed on both sides of the top block, the middle of the two sets of connection inclined plates is reinforced and fixed by a reinforcing plate, and the reinforcing plate and the periphery of the wheel disc are further provided with a plurality of sets of reinforcing connection blocks.

4. A washing machine pulley assembly as claimed in claim 3 wherein the top block is provided with a resilient rubber block at its end.

5. A washing machine pulley arrangement according to claim 4, wherein the top blocks of the rim are provided in two sets arranged side by side.

6. A washing machine pulley arrangement according to claim 4 or 5, wherein the drive ring is provided with a set on one side of the top block.

7. A washing machine pulley device according to claim 5 or 6, wherein the drive rings are provided with two sets of drive rings symmetrically distributed on both sides of the top block, and the two sets of drive rings can be synchronously rotated by the two sets of drive motors to drive the top block to be radially ejected out of the outer end of the through hole.

8. A washing machine pulley arrangement according to claim 6, wherein a spring is also secured to the reinforcing plate for crimping against the end of the top block.

9. A drum washing machine characterized in that a washing machine pulley device according to any one of claims 1, 2, 3, 4, 5, 8 is installed.

Technical Field

The invention relates to a washing machine, in particular to a washing machine belt pulley device and a drum washing machine.

Background

The belt pulley of the drum washing machine is arranged between the motor and the drum to play a role in transfer, namely, the motor drives the belt pulley to rotate through the belt, so that the inner drum of the washing machine is driven to rotate, washing and dehydration actions are realized, the belt pulley of the existing washing machine is worn greatly after being used for a long time, so that the friction force is reduced, the circumference of the belt is increased when the belt pulley is frequently used, and after the slipping phenomenon occurs between the belt and the belt pulley, the separation phenomenon between the belt and the belt pulley can be caused, and the stirring noise is increased;

in the prior art, for example, a deformation-preventing plastic-steel belt pulley (publication number: CN213117372U) for a washing machine comprises an outer ring and an inner ring, wherein a plurality of reinforcing rods are uniformly and fixedly arranged between the outer side of the inner ring and the inner side of the outer ring, extending blocks are arranged at the two side ends of the reinforcing rods, a first chute is horizontally arranged at the center of the front end of each extending block, a transmission belt is sleeved at the outer side end of the outer ring, the transmission belt is clamped in a limiting groove, then a first sliding block is moved along the first chute, so that a first spring is compressed, the inner side end of the first sliding block is far away from the upper end of a second sliding block, the second spring drives the second sliding block to move along the second chute until an arc-shaped block tightens the transmission belt, and the upper end of the second sliding block moves to a position between the first sliding blocks, and the second spring is still in a compressed state, when the transmission belt is loosened after long-term use, the transmission belt can be tightened by the elastic force of the second spring, so that the service life of the transmission belt is effectively prolonged, and the transmission belt is prevented from loosening; however, in the structure, when the belt is loose, the arc blocks are pushed out by the spring to tightly push the belt, the arc blocks are in tangent point contact with the belt or in surface contact with a small area, and after the belt is tightened by the spring which is pushed out by the arc blocks, because of the rotation of the belt pulley, a continuous static pressure contact-separation-secondary static pressure contact cycle can occur between any point of the belt and the belt pulley, and in the cycle, a loose-proof pressing cycle of the spring can occur, namely, the tightening degree of the belt can be continuously changed circularly, and the arc blocks are in mutually independent position relation, so that the phenomenon of unbalanced stress of the belt is easily caused, and the installation of a large number of arc blocks is not suitable for improving the integral strength of the belt pulley;

therefore, a belt pulley device of a washing machine and a drum washing machine are urgently needed, wherein the belt pulley device can not only realize the tightening operation of a belt after the contact surface of the belt pulley and the belt is abraded and slipped or the belt is loosened, but also improve the stress balance effect when the belt is tightened, and can reduce the integral quality on the basis of improving the strength of the belt pulley.

Disclosure of Invention

The invention aims to provide a belt pulley device of a washing machine and a drum washing machine, which not only can realize the tightening operation of a belt after a belt pulley and a belt contact surface are worn and slipped or the belt is loosened, but also can improve the stress balance effect when the belt is tightened, and can reduce the integral quality on the basis of improving the strength of the belt pulley.

The invention provides the following technical scheme:

a washing machine belt pulley device and a drum washing machine comprise a rim matched with a conveying belt, a wheel shaft positioned in the rim and matched with a transmission shaft in a transmission manner, and a wheel disc connected between the rim and the wheel shaft, and are characterized in that a plurality of groups of ejector blocks are uniformly arranged on the rim along the circumferential direction of the rim, a through hole for the ejector blocks to pass through is formed in the rim, and a sliding groove which extends along the radial direction and is in sliding connection with a sliding block on the side wall of the ejector block is formed in the inner wall of the through hole; the inner side of the rim is coaxially and rotatably connected with a driving ring, one side of the driving ring, which faces the top block, is provided with a first thread groove, the side wall of the top block is provided with a second thread groove in threaded connection with the first thread groove, the inner side of the driving ring is also provided with an inner gear ring, the inner side of the rim is provided with a driving motor for driving the driving ring to rotate, and the driving ring can drive the top block to synchronously eject outwards along the radial direction under the driving of the driving motor.

Preferably, the outer side of the wheel rim is provided with protective edges which are enclosed at two sides of the conveying belt, so that the conveying belt can be prevented from deviating to a certain extent and limited.

Preferably, the outer end of the wheel disc is provided with two groups of connecting inclined plates which are symmetrically distributed on two sides of the ejector block, the middle of the two groups of connecting inclined plates is reinforced and fixed by the reinforcing plate, and the peripheries of the reinforcing plate and the wheel disc are also provided with a plurality of groups of reinforcing connecting blocks, so that the whole structure can have better connecting strength on the basis of weight reduction.

Preferably, the end of the top block is provided with an elastic rubber block.

Preferably, the top blocks of the wheel rim are provided with two groups arranged side by side.

Preferably, the drive ring is provided with a group located on one side of the top block.

Preferably, the driving rings are provided with two groups which are symmetrically distributed on two sides of the top block, and the two groups of driving rings can synchronously rotate under the driving of the two groups of driving motors to drive the top block to be ejected out to the outer end of the through hole along the radial direction.

Preferably, a spring for pressing against the end of the top block is further fixed to the reinforcing plate.

A drum washing machine is provided with the washing machine belt pulley device.

The invention has the beneficial effects that:

1. when the belt pulley and the belt contact surface are abraded and slipped or the belt is loosened, the driving motor can be started, the driving wheel connected with the driving motor is meshed with the outer gear ring, so that the driving ring is driven to rotate relative to the wheel rim, the side surface of the driving ring is provided with a planar first thread groove, the side wall of the top block is provided with a second thread groove in threaded connection with the first thread groove, when the driving ring rotates, the top block can be pushed out of the wheel rim along the radial direction under the pushing of the groove body of the first thread groove due to the limit of the through hole, at the moment, the top end of the top block protrudes out of the outer side of the wheel rim and is pressed on the conveying belt, the effect of pressing and supporting the conveying belt is achieved, the static pressure between the conveying belt and the belt pulley is increased, and the slipping phenomenon between the conveying belt and the belt pulley is avoided;

2. the groove body of the first thread groove is also used for stably supporting the jacking block to provide stable jacking force for the jacking block, so that the stress balance effect when the belt is tightened can be improved, the synchronous motion positioning of a plurality of groups of jacking blocks is realized by adopting the driving ring, and the integral quality is also greatly reduced on the basis of ensuring the strength of the belt pulley.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a front sectional view of the ejector block of the present invention as it is ejected;

FIG. 3 is a partial side sectional view of the rim and disc joint of embodiment 1;

FIG. 4 is a partial side sectional view of the rim and disc joint of embodiment 2;

FIG. 5 is a partial side sectional view of the rim and disc connection of embodiment 3;

FIG. 6 is a partial side sectional view of the rim and disc joint of embodiment 4;

notation in the figure: the wheel comprises a rim 1, a wheel shaft 2, a wheel disc 3, a top block 4, a through hole 5, a driving ring 6, an inner gear ring 7, a driving motor 8, a protective edge 9, a connecting inclined plate 10, a reinforcing plate 11, a reinforcing connecting block 12, an elastic rubber block 13, a spring 14, a supporting plate 15, a first thread groove 16 and a second thread groove 17.

Detailed Description

Example 1

As shown in fig. 1-3, the belt pulley device for a washing machine in this embodiment includes a rim 1 for cooperating with a conveying belt, a wheel shaft 2 located in the rim 1 and in transmission cooperation with a transmission shaft, and a wheel disc 3 connected between the rim 1 and the wheel shaft 2, wherein the rim 1 is uniformly provided with a plurality of groups of top blocks 4 along the circumferential direction thereof, the rim 1 is provided with a through hole 5 for the top block 4 to pass through, and the inner wall of the through hole 5 is provided with a chute extending in the radial direction and slidably connected with a slider on the side wall of the top block 4; a driving ring 6 is coaxially and rotatably connected to the inner side of the rim 1, a first thread groove 16 is formed in one side, facing the top block 4, of the driving ring 6, a second thread groove 17 in threaded connection with the first thread groove is formed in the side wall of the top block 4, an inner gear ring 7 is further arranged on the inner side of the driving ring 6, a driving motor 8 for driving the driving ring 6 to rotate is installed on the inner side of the rim 1, and the driving ring 6 can drive the top block 4 to synchronously eject outwards in the radial direction under the driving of the driving motor 8; the outer side of the wheel rim 1 is provided with protective edges 9 which are enclosed at two sides of the conveying belt, so that a certain deviation prevention and limiting effect on the conveying belt can be achieved; the outer end of the wheel disc 3 is provided with two groups of connecting inclined plates 10 which are symmetrically distributed on two sides of the top block 4, the middle of the two groups of connecting inclined plates 10 is reinforced and fixed by a reinforcing plate 11, and the peripheries of the reinforcing plate 11 and the wheel disc 3 are also provided with a plurality of groups of reinforcing connecting blocks 12, so that the whole structure can have better connecting strength on the basis of weight reduction; the end part of the top block 4 is provided with an elastic rubber block 13 which is used for being pressed and contacted with the conveying belt, and the driving ring 6 is provided with a group which is positioned on one side of the top block 4;

the embodiment also provides a drum washing machine, which is provided with the belt pulley device of the washing machine.

Example 2

As shown in fig. 1, 2 and 4, the belt pulley device for a washing machine in this embodiment is different from embodiment 1 in that, in order to improve the stability effect of the top block 4, two sets of driving rings 6 are symmetrically distributed on two sides of the top block 4, and the two sets of driving rings 6 can be synchronously rotated by the two sets of driving motors 8 to drive the top block 4 to be ejected out of the through hole 5 along the radial direction, so that the first thread grooves on two sides of the top block 4 realize the balanced support for the top block 4, and only when the two sets of driving rings 6 are synchronously rotated, the top block 4 can be ejected, thereby avoiding the displacement phenomenon of the top block 4 caused by the mis-rotation of one set of driving rings 6 when the conveying belt is ejected.

Example 3

As shown in fig. 1, 2 and 5, the belt pulley device for a washing machine in the present embodiment is different from embodiment 1 in that two sets of top blocks 4 of a rim 1 are arranged side by side, so as to improve the top pressure contact effect of the top blocks 4 and a conveying belt, and a spring 14 for pressing the end of the top block 4 is further fixed on a reinforcing plate 11, so as to buffer a part of pressure on a first thread groove body, and a supporting plate 15 between the two sets of top blocks 4 is added between the reinforcing plate 11 and the rim 1, so as to further improve the connection strength between the rim 1 and a wheel disc 3.

Example 4

As shown in fig. 1, 2 and 6, in the present embodiment, the difference from embodiment 2 is that the top block 4 of the rim 1 is provided with two sets arranged side by side, so as to improve the top pressure contact effect of the top block 4 and the conveying belt, and the reinforcing plate 11 is further fixed with a spring 14 for pressing the end of the top block 4, so as to buffer a part of the pressure on the first thread groove body, and a supporting plate 15 between the two sets of top blocks 4 is added between the reinforcing plate 11 and the rim 1, so as to further improve the connection strength between the rim 1 and the wheel disc 3.

The working principle of the invention is as follows: when a belt pulley and a belt contact surface are abraded and slipped or the belt is loosened, the driving motor 8 can be started, the driving wheel connected with the driving motor 8 is meshed with the outer gear ring, so that the driving ring 6 is driven to rotate relative to the wheel rim 1, the side surface of the driving ring 6 is provided with a planar first thread groove, the side wall of the top block 4 is provided with a second thread groove in threaded connection with the first thread groove, when the driving ring 6 rotates, the top block 4 can be pushed out of the wheel rim 1 along the radial direction under the pushing of the groove body of the first thread groove due to the limiting of the through hole, the top end of the top block 4 protrudes out of the outer side of the wheel rim 1 and is pressed on the conveying belt, the effect of pressing and supporting the conveying belt can be achieved, the static pressure between the conveying belt and the conveying belt is increased, and the slipping phenomenon between the conveying belt and the belt pulley is avoided; the groove body of the first thread groove is also used for stably supporting the jacking blocks 4 to provide stable jacking force for the jacking blocks 4, so that the stress balance effect when the belt is tightened can be improved, the driving ring 6 is adopted to realize synchronous movement positioning of a plurality of groups of jacking blocks 4, and the overall quality can be greatly reduced on the basis of ensuring the strength of the belt pulley.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.