Flange structure at bottom of inner tub of washing machine and a washing machine

Abstract

The present invention discloses a flange structure at a bottom of an inner tub of a washing machine, comprises a shaft joint portion locating at a center of the flange and an annular mounting portion which is fixedly connected with the bottom of the inner tub of the washing machine and is at an outer periphery of the shaft joint portion, and a plurality of connecting portions being provided between the mounting portion and the shaft joint portion. The connecting portions include a main rib extending from the mounting portion to the shaft joint portion, and a plurality of transverse ribs are arranged on both sides of the main rib along an extending direction of a main rib respectively in turn, and a filter portion is formed by the plurality of connecting portions cooperating together, which is a region between the mounting portion and the shaft joint portion.

Claims

1. A flange structure for use at a bottom of an inner tub of a washing machine, comprising a shaft joint portion located at a center of the flange, an annular mounting portion configured to be fixedly connected with the bottom of the inner tub of the washing machine and located at an outer periphery of the shaft joint portion, a plurality of connecting portions provided between the mounting portion and the shaft joint portion, each connecting portion including a main rib extending from the mounting portion to the shaft joint portion, and a plurality of transverse ribs arranged on both sides of the main rib in an extending direction of the main rib respectively in turn, wherein the connecting portions descend from the main rib towards both sides in an extending direction of the transverse ribs, a V-shaped recess is formed between two adjacent connecting portions, and a V-shaped recess bottom end is a breach of the flange formed by a distance between the transverse ribs of the two main ribs for water flow, and wherein a filter portion is formed in a region between the mounting portion and the shaft joint portion by the plurality of connecting portions.

2. The flange structure according to claim 1, wherein a backlash is provided between two adjacent transverse ribs on the same side of any one of the main ribs.

3. The flange structure according to claim 1 wherein an upper surface of the main rib is an arc-shaped surface which descends in an arc-shaped transition from a center to both sides, and is smoothly connected with the transverse ribs on both sides.

4. The flange structure according to claim 3, wherein one end of the transverse ribs is connected with the main rib smoothly and the other end is a curved end, an upper surface of the transverse ribs is a curved surface which smoothly descends from a high center to both sides, and the transverse ribs incline down from one end connected to the main rib in the extending direction to the other end.

5. The flange structure according to claim 1, wherein the main rib is arranged in the radial direction of the flange, and each of the transverse ribs is curved and extends in a lateral direction of the main rib, and a curvature is set in correspondence with the circumferential position of the flange.

6. The flange structure according to claim 5, wherein the transverse ribs on both sides of each main rib are arranged in intervals and staggered on different circumferences, or, the transverse ribs on both sides of the same main rib are corresponding one by one, each two in a group is on a same circumference.

7. The flange structure according to claim 5, wherein the transverse ribs between two adjacent main ribs are corresponding one by one, each two in a group is on a same circumference, or, arranged in intervals and staggered on different circumferences.

8. The flange structure according to claim 1, wherein the transverse ribs of the main ribs in each group are sequentially increased in length in the extending direction of the main rib from a connecting end of the shaft joint portion toward a connecting end of the mounting portion, and an inclination angle of the upper surface of the transverse ribs becomes smaller.

9. A washing machine, comprising an inner tub and an outer tub mounted inside the outer tub, wherein the flange structure according to claim 1 is mounted at a bottom of the inner tub, and the filter portion is formed by the plurality of connecting portions between the mounting portion and the shaft joint portion.

10. The flange structure according to claim 1, wherein the connecting portion further comprises: a reinforcing rib provided between two adjacent main ribs, one end of which is connected to the mounting portion and the other end of which freely extends toward the shaft joint portion, a plurality of strengthening ribs arranged in order in an extending direction of the reinforcing rib on both sides of the reinforcing rib, a space between the transverse ribs of the adjacent main ribs and a space between the transverse ribs of the main rib and the strengthening ribs of the reinforcing rib adjacent to each other together form a filter portion between the mounting portion and the shaft joint portion.

11. The flange structure according to claim 10, wherein the main rib is gradually lowered toward both sides in an extending direction of the transverse ribs, a V-shaped recess is formed between two columns of transverse ribs of the adjacent main ribs, and a V-shaped recess bottom end is a breach of the flange formed by a distance between the transverse ribs of the two main ribs for water flow, and/or the reinforcing rib is gradually lowered toward both sides in an extending direction of the strengthening ribs, a gap is formed by a distance between a column of the transverse ribs and a column of the strengthening ribs adjacent to each other.

12. The flange structure according to claim 10, wherein a backlash is provided between two adjacent transverse ribs on the same side of the main rib, and/or, a backlash is provided between two adjacent transverse ribs on the same side of the reinforcing rib.

13. The flange structure according to claim 10, wherein an upper surface of the main rib/the reinforcing rib is an arc-shaped surface which is descended in an arc-shaped transition from a center to both sides, and is smoothly connected with the transverse ribs/the strengthening ribs on both sides.

14. The flange structure according to claim 13, wherein one end of the transverse ribs/the strengthening ribs is connected with the main rib/the reinforcing rib smoothly and the other end is a curved end, an upper surface of the transverse ribs/the strengthening ribs is a curved surface which is smoothly descended from a high center to both sides, and the transverse ribs/the strengthening ribs incline down from one end connected to the main rib/reinforcing rib in the extending direction to the other end.

15. The flange structure according to claim 10, wherein the main rib/reinforcing rib is arranged in a radial direction of the flange, and each of the transverse ribs/strengthening ribs is curved and extends in a lateral direction of the main rib/reinforcing rib, and a curvature is set in correspondence with the circumferential position of the flange.

16. The flange structure according to claim 15, wherein the transverse ribs/strengthening ribs on both sides of each main rib/reinforcing rib are arranged in intervals and staggered on different circumferences, or, the transverse ribs/strengthening ribs on both sides of the same main rib/reinforcing rib are corresponding one by one, and each two in a group is on a same circumference.

17. The flange structure according to claim 15, wherein the transverse ribs of the main rib correspond to the strengthening ribs of the reinforcing rib adjacent to each other one by one, two of them in a group is on a same circumference, or, arranged in intervals and staggered on different circumferences.

18. The flange structure according to claim 10, wherein a length of the reinforcing rib is smaller than a length of the main rib, a length of the strengthening ribs changes corresponding to a change of a length of the transverse ribs of the adjacent main rib, the strengthening ribs and adjacent transverse ribs cooperate to form a filtration structure.

19. The flange structure according to claim 18, wherein the length of the reinforcing rib is less than half the length of the main rib.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a cross-sectional structure diagram of a bottom of an inner tub and a flange structure of a washing machine of the present disclosure;

(2) FIG. 2 is a schematic diagram of a flange structure of the present disclosure;

(3) FIG. 3 is an enlargement diagram of A part of the FIG. 2;

(4) FIG. 4 is a schematic diagram of another flange structure of the present disclosure;

(5) FIG. 5 is an enlargement diagram of B part of the FIG. 4;

(6) FIG. 6 is a cross-sectional diagram of a flange of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

(7) Specific embodiments of the present disclosure are further described below in detail with reference to the accompanying drawings.

(8) As shown in FIG. 1, a pulsator washing machine comprises an outer tub 1 and an inner tub 2, an inner tub bottom 4 is a hollow ring structure, a lower part of the inner tub bottom 4 is mounted a flange 5 mentioned in the present disclosure for preventing foreign matter between the inner and outer tubs from entering into the inner tub with water flow during a washing process. And it doesn't block lint and the lint is easily going through the flange into the space between the inner and outer tubs during draining and discharged from a water outlet of the outer tub to outside. There is a rather great improvement between the flange of the present disclosure and an existing flange on which outwardly extended mounting bases are no longer mounted. For the flange of the present disclosure, the overall shape is a disc, the disc is provided with an annular hollow region concentrically and a filter structure is integrally provided in the hollow region.

(9) As shown in FIG. 2 and FIG. 4, a flange 5 of the present disclosure, comprises a shaft joint portion 6 locates at a center of the flange and an annular mounting portion 7 which is fixedly connected with the bottom 4 of the inner tub of the washing machine and is at an outer periphery of the shaft joint portion 6, a plurality of connecting portions 8 are provided between the mounting portion 7 and the shaft joint portion 6. The connecting portion 8 includes a main rib 81 extending from the mounting portion 7 to the shaft joint portion 6, and a plurality of transverse ribs 82 are arranged on both sides of the main rib 81 in an extending direction of a main rib 81 respectively in turn, the plurality of connecting portions 8 cooperate to form a filter portion which is a region between the mounting portion 7 and the shaft joint portion 6. Crew mounting holes 9 and positioning posts 10 which cooperate with the bottom of the inner tub 4 are provided on the mounting portion 7.

(10) Further, the connecting portion 8 descends from the main rib 81 towards both sides in an extending direction of the transverse ribs 82, a V-shaped recess 83 is formed between two adjacent connecting portions 8, and a V-shaped recess 83 bottom end is a breach 84 of the flange formed by the distance between the transverse ribs 82 of the two adjacent main ribs for water flowing. Lint, fasteners and other sundries in the inner tub slide along the transverse ribs 82 through the breach 84 into the outer tub.

(11) Further, a backlash 85 is provided between two adjacent transverse ribs 82 on the same side of any of the main ribs 81, and the backlash 85 structure is conducive to let water and lint flow through. As shown in FIG. 6, an upper surface of the main rib 81 is an arc-shaped surface, which is reduced by an arc-shaped transition from a center to both sides, and is smoothly connected with the transverse ribs 82 on both side. One end of the transverse rib 82 is connected with the main rib 81 smoothly and the other end is a curved end (As shown in FIG. 3). An upper surface of the transverse rib 82 is a curved surface which smoothly descends from a high center to both sides. And the transverse rib inclines down from one end connected to the main rib 81 to the other in the extending direction.

(12) Preferably, the main ribs 81 are arranged in the radial direction of the flange, and each of the transverse ribs 82 is curved and extends in a lateral direction of the main rib, and is set in correspondence with a curvature of the circumferential position of the flange. The transverse ribs 82 are located on concentric circumferences of different radii, and the corresponding curvatures are different.

Embodiment 1

(13) As shown in FIG. 2 and FIG. 3, the transverse ribs 82 on both sides of the same main rib 81 of the present embodiment are corresponding one by one, and each two transverse ribs in a group is on a same circle. Or, the transverse ribs 82 on both sides of each main rib 81 are arranged in intervals and staggered on different circumferences.

Embodiment 2

(14) As shown in FIG. 2 and FIG. 3, the transverse ribs 82 between two adjacent main ribs 81 of the present embodiment are arranged in intervals and staggered on different circumferences. Or, as shown in FIG. 4 and FIG. 5, two adjacent columns of transverse ribs 82 of two adjacent main ribs are corresponding one by one, each two in a group is on a same circumference.

Embodiment 3

(15) As shown in FIG. 2 and FIG. 3, the connecting portion of the present embodiment has a fishbone structure, that is, the main rib is a vertebra, and the transverse ribs on both sides are transverse barbs. The transverse ribs 82 of the main ribs 81 in each group are sequentially increased in length in the extending direction of the main rib 81 from a connecting end of the shaft joint portion 6 toward a connecting end of the mounting portion 7, and an inclination angle of the upper surface of the transverse ribs 82 becomes smaller.

Embodiment 4

(16) As shown in FIG. 4 and FIG. 5, a cantilever structure is added in the present embodiment based on the embodiment 3. That is a reinforcing rib 86 is provided between two adjacent main ribs 81. One end of the reinforcing rib is connected with a mounting portion 7 and the other end is a free end extends toward a shaft joint portion 6. A plurality of strengthening ribs 87 are sequentially arranged on both sides of the reinforcing rib 86 in the extending direction of the reinforcing rib 86, and strengthening ribs on each side forms a row. Between each row of strengthening ribs 87 and a column of transverse ribs 81 of the main ribs adjacent to the row of strengthening ribs is a gap 88 formed by a distance within, the structure and effect of the gap 88 are the same as the breach 84 between two adjacent main ribs.

(17) The reinforcing rib 86 between the two adjacent main ribs 81 is not completely connected to the mounting portion 7 and the shaft joint portion 6, therefore, a length of the reinforcing rib 86 is smaller than a length of the main rib 81, preferably less than half the length of the main rib 81. Further, a length of the strengthening ribs 87 changes corresponding to the change of a length of the transverse rib 82 of the adjacent main rib 81. The strengthening ribs 87 and adjacent transverse ribs 82 cooperate to form a filtration structure. It blocks the passage of foreign matter between the inner and outer tubs, but allows lint in the inner tub to go through during drainage.

(18) A general variation is that the length of the transverse rib 82 of the main rib 82 gradually increases from one end on the shaft joint portion to the other end until the position with the same circumferential position with a free end of the reinforcing rib 87, the length of the transverse ribs 82 and the length of the strengthening ribs 87 of the reinforcing ribs 86 cooperate with each other to form a filter portion.

(19) Further, one end of the reinforcing rib 86 connected to the mounting portion 7 is smoothly transited and the other end is a smooth end portion. Upper surfaces of the reinforcing rib 86, strengthening ribs 87 are arc-shaped surfaces, as the same as upper surfaces of the main ribs 81 and transverse ribs 82 respectively, of which a center is high and descends toward both sides. It is conducive to lint to slip off and avoid winding.

Embodiment 5

(20) As shown in FIG. 4 and FIG. 5, a backlash 89 is provided between the strengthening ribs 87 on the side of the reinforcing ribs, which are the same as the structure of the transverse ribs 82 of the main ribs 81. The function is the same as the backlash 85 between the transverse ribs. The strengthening ribs 87 on both sides are arranged in intervals and staggered on different circumferences, or, arranged correspondingly one by one and each two in a group is on a same circumference.

Embodiment 6

(21) As shown in FIG. 4 and FIG. 5, a column of strengthening ribs 87 on the same side of the reinforcing rib 86 corresponds one by one to a column of transverse ribs 82 of the adjacent main rib 81. Each pair, that is one strengthening rib and one transverse rib, is on a same circumference; or, arranged in intervals and staggered on different circumferences.

Embodiment 7

(22) The washing machine of the present disclosure has a function of cleaning the walls of tubs, that is, cleaning particles 3 floating and flowing with water that impact and rub tub walls are provided between an outer tub 1 and an inner tub 2 to clean an inner wall of the outer tub and an outer wall of the inner tub (As shown in FIG. 1). The flange structure mentioned above can prevent cleaning particles 3 from entering in the inner tub. The washing machine according to the present disclosure is not limited to the above-described washing machine, and the washing machine having the above-described flange structure is within the scope of the present disclosure.

(23) The main ribs, reinforcing ribs, transverse ribs and strengthening ribs of the present disclosure have the advantages of facilitating the passage of lint during drainage and preventing the lint from winding around the parts, thereby reducing the possibility of blockage. At the same time, the structure can make coins, buttons and other debris go through the backlash, breach and gap between the transverse ribs and strengthening ribs, reducing the possibility of jamming.

(24) A number of the main ribs 81 and the reinforcing ribs 86 mentioned above is 12 respectively, but is not limited to this range, the number is related to the size and demand strength of the flange. The larger the flange, the higher the strength is required the greater the number of the main ribs.

(25) The above description is only preferred embodiments of the disclosure. It should be noted that without departing from the design concept of the present disclosure, various variations and improvements made to the technical solutions of the present disclosure by persons skilled in the art all belong to the protection scope of the present disclosure.