INNER BARREL SHAFT SEAL MOUNTING STRUCTURE OF WASHING MACHINE

Abstract

An inner barrel shaft seal mounting structure of a washing machine comprises an inner barrel flange and an inner barrel shaft which are arranged at an inner barrel bottom, wherein the upper end part of the inner barrel shaft is a flange structure, the inner barrel flange is connected with an inner barrel shaft flange, and a composite sealing gasket is arranged between the inner barrel flange and the inner barrel shaft flange, the composite sealing gasket comprises a metallic framework and a rubber gasket which are combined into one piece through vulcanization. According to the scheme, the composite sealing gasket is of an annular flat structure and is provided with a bolt through hole, an inner teeth, a positioning structure and an annular convex rib. The scheme has functions of gasket and seal, and can bear a relatively high radial force and a relatively high axial force.

Claims

1. An inner barrel shaft seal mounting structure of a washing machine, comprising an inner barrel flange arranged at an inner barrel bottom and an inner barrel shaft, and an upper end part of the inner barrel shaft being a flange mounting structure, and the inner barrel flange being in seal connection with an inner barrel shaft flange; wherein, a composite sealing gasket is arranged between the inner barrel flange and the inner barrel shaft flange, and the composite sealing gasket comprises a metallic framework and a rubber gasket which are combined into one piece through vulcanization.

2. The inner barrel shaft seal mounting structure of the washing machine according to claim 1, wherein the composite sealing gasket is of a flat annular structure, a center hole is formed in the middle of the composite sealing gasket, and a first annular convex rib is arranged on an upper surface and/or a lower surface of the composite sealing gasket around the center hole.

3. The inner barrel shaft seal mounting structure of the washing machine according to claim 1, wherein a plurality of bolt through holes are distributed in a circumference direction of the composite sealing gasket, a second annular convex rib is arranged at an outer ring of each bolt through hole on an upper surface and/or a lower surface of the composite sealing gasket.

4. The inner barrel shaft seal mounting structure of the washing machine according to claim 1, wherein a positioning structure is arranged between the composite sealing gasket and the inner barrel shaft flange.

5. The inner barrel shaft seal mounting structure of the washing machine according to claim 1, wherein both the metallic framework and the rubber gasket are of annular structures, and are concentrically arranged and bonded together with each other along the radial direction through vulcanization.

6. The inner barrel shaft seal mounting structure of the washing machine according to claim 5, wherein the rubber gasket is arranged at an inner ring of the metallic framework and forms a lining of the metallic framework, and the rubber gasket and the metallic framework are combined to form the composite sealing gasket with the flat annular structure.

7. The inner barrel shaft seal mounting structure of the washing machine according to claim 6, wherein the inner ring of the metallic framework serves as a combination part which is bonded to the rubber gasket through vulcanization, and the combination part is formed by multiple sections of curves which are successively connected.

8. The inner barrel shaft seal mounting structure of the washing machine according to claim 6, wherein the rubber gasket comprises an annular rubber body, an outer ring of the annular rubber body is bonded to the metallic framework through vulcanization, an inner ring of the annular rubber body forms a center hole, a first annular convex rib is arranged on an upper surface and/or a lower surface of the annular rubber body around the center hole, a plurality of bolt through holes are distributed outside the first annular convex rib in a circumference direction, and a second annular convex rib is arranged at an outer ring of each bolt through hole on the upper surface and/or lower surface of the annular rubber body.

9. The inner barrel shaft seal mounting structure of the washing machine according to claim 8, wherein a segmented convex rib is connected between every two adjacent second annular convex ribs.

10. The inner barrel shaft seal mounting structure of the washing machine according to claim 8, wherein horizontal planes of the upper and lower surfaces of the annular rubber body are same with that of the upper and lower surfaces of the metallic framework respectively, there is a smooth transition at a vulcanization bonding position, the first annular convex rib and the second annular convex ribs protrude from the surface of the composite sealing gasket.

11. The inner barrel shaft seal mounting structure of the washing machine according to claim 8, wherein at least one positioning column protrudes from the lower surface of the annular rubber body, and a positioning hole matched with the positioning column is formed in the inner barrel shaft flange and is located between two bolt through holes.

12. The inner barrel shaft seal mounting structure of the washing machine according to claim 8, wherein both the bolt through hole and the positioning column partially protrude from an outer ring of the annular rubber body to form arc-shaped protrusions, and a plurality of arc-shaped notches matched with the arc-shaped protrusions at the outer ring of the annular rubber body are formed in the inner ring of the metallic framework.

13. The inner barrel shaft seal mounting structure of the washing machine according to claim 3, wherein a segmented convex rib is connected between every two adjacent second annular convex ribs.

14. The inner barrel shaft seal mounting structure of the washing machine according to claim 13, wherein circumference traces of a plurality of segmented convex ribs are same and are concentric with the first annular convex rib.

15. The inner barrel shaft seal mounting structure of the washing machine according to claim 4, wherein the positioning structure is a positioning column which protrude from a surface of the composite sealing gasket, and a positioning hole matched with the positioning column is formed in the inner barrel shaft flange.

16. The inner barrel shaft seal mounting structure of the washing machine according to claim 9, wherein circumference traces of a plurality of segmented convex ribs are same and are concentric with the first annular convex rib.

17. The inner barrel shaft seal mounting structure of the washing machine according to claim 10, wherein protruding heights of the first annular convex rib and second annular convex ribs are same.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1: a schematic diagram of a composite sealing gasket of the present invention;

[0028] FIG. 2: a front view of a composite sealing gasket of the present invention;

[0029] FIG. 3: a schematic diagram of an inner barrel shaft seal structure of a washing machine of the present invention;

[0030] FIG. 4: a local schematic diagram of an inner barrel shaft seal structure of a washing machine of the present invention;

[0031] FIG. 5: an assembly drawing of a composite sealing gasket of the present invention;

[0032] FIG. 6: a schematic diagram of a segmented convex rib of a composite sealing gasket of the present invention; and

[0033] FIG. 7: an assembly schematic diagram of an inner barrel shaft seal structure of a washing machine of the present invention.

[0034] Reference Signs: 1. composite sealing gasket, 2. metallic framework, 3. rubber gasket, 4. first annular convex rib, 5. arc-shaped inner tooth, 6. bolt through hole, 7. second annular convex rib, 8. positioning structure, 9. center hole, 10. inner barrel shaft flange, 11. inner barrel flange, 12. bolt, 13. inner barrel shaft, 14. non-circular center hole, 15. segmented convex rib, 16. arc-shaped protrusion, 17. arc-shaped notch, and 18. positioning hole.

DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and comprehensible, the present invention is further described in detail below with reference to the drawings and the specific embodiments.

[0036] As shown in FIG. 1 to FIG. 7, an inner barrel shaft seal mounting structure of a washing machine, provided by the present invention, comprises an inner barrel flange 11 and an inner barrel shaft 13 which are arranged at an inner barrel bottom. The upper end part of the inner barrel shaft 13 is a flange mounting structure, the inner barrel flange 11 is in seal connection with an inner barrel shaft flange 10. A composite sealing gasket 1 is arranged between the inner barrel flange 11 and the inner barrel shaft flange 10. The composite sealing gasket 1 comprises a metallic framework 2 and a rubber gasket 3 which are combined into one piece through vulcanization.

[0037] As shown in FIG. 7, the inner barrel bottom of the washing machine is sealed, i.e., the inner barrel flange 11 is in seal connection with an inner barrel bottom. The upper end part of the inner barrel shaft 13 is the flange mounting structure, the inner barrel flange 11 is also in seal connection with the inner barrel shaft flange 10, and the inner barrel is a water containing structure.

Embodiment I

[0038] As shown in FIG. 1, in this embodiment, a composite sealing gasket 1 is of a flat annular structure. A center hole 9 is formed in the middle of the composite sealing gasket 1. And a first annular convex rib 4 is arranged on the upper surface and/or lower surface of the composite sealing gasket 1 around the center hole 9.

Embodiment II

[0039] As shown in FIG. 1, in this embodiment, a plurality of bolt through holes 6 are distributed in the composite sealing gasket 1 in a circumference direction. A second annular convex rib 7 is arranged at an outer ring of each bolt through hole 6 on the upper surface and/or lower surface of the composite sealing gasket 1. Preferably, a segmented convex rib 15 is connected between every two adjacent second annular convex ribs 7. And more preferably, circumference traces of a plurality of segmented convex ribs 15 are same and are concentric with the first annular convex rib 4.

Embodiment III

[0040] As shown in FIG. 2 and FIG. 7, in this embodiment, the positioning structures 8 protrude from the surface of the composite sealing gasket 1. Preferably, the positioning structures 8 are positioning columns, and positioning holes 18 matched with the positioning columns are formed in the inner barrel shaft flange 10.

[0041] Preferably, in this embodiment, at least one positioning column protrudes from the lower surface of an annular rubber body, the positioning column is located between two bolt through holes 6. And the positioning hole 18 matched with the positioning column is formed in the inner barrel shaft flange 10.

Embodiment IV

[0042] As shown in FIG. 6, in this embodiment, the positioning structure of the composite sealing gasket adopts a positioning column manner and/or adopts a manner that a non-circular center hole 14 is matched with the inner barrel shaft 13.

Embodiment V

[0043] As shown in FIG. 1, in this embodiment, both the metallic framework 2 and the rubber gasket 3 are of annular structures and are bonded with each other through vulcanization. The rubber gasket 3 is arranged at an inner ring of the metallic framework 2 and forms a lining of the metallic framework 2. The rubber gasket 3 and the metallic framework 2 are combined to form the flat annular composite sealing gasket 1. An inner ring of the metallic framework 2 serves as a combination part which is bonded to the rubber gasket 3 through vulcanization, and the combination part is formed by multiple sections of curves which are successively connected.

Embodiment VI

[0044] As shown in FIG. 1 and FIG. 6, in this embodiment, the rubber gasket 3 comprises an annular rubber body. An outer ring of the annular rubber body is bonded to the metallic framework 2 through vulcanization. An inner ring of the annular rubber body forms a center hole 9, and a first annular convex rib 4 is arranged on the upper surface and/or lower surface of the annular rubber body around the center hole 9. A plurality of bolt through holes 6 are distributed outside the first annular convex rib 4 in a circumference direction. And a second annular convex rib 7 is arranged at an outer ring of each bolt through hole 6 on the upper surface and/or lower surface of the annular rubber body. A segmented convex rib 15 is connected between every two adjacent second annular convex ribs 7. And preferably, circumference traces of a plurality of segmented convex ribs are same and are concentric with the first annular convex rib 4.

Embodiment VII

[0045] As shown in FIG. 6, in this embodiment, horizontal planes of the upper and lower surfaces of the annular rubber body are same with that of the upper and lower surfaces of the metallic framework 2 respectively. There is a smooth transition at a vulcanization bonding position. Protruding heights of the first annular convex rib 4 and the second annular convex ribs 7 protrude from the surface of the composite sealing gasket 1 are same.

[0046] Preferably, in this embodiment, the protruding height of the first annular convex rib 4 and the second annular convex ribs 7 are relatively small, for example 0.8 cm. Thus, the composite sealing gasket 1 can exert a better sealing action, and the condition that a gap is still generated after the inner barrel flange 11 and the inner barrel shaft flange 10 in rigid contact is prevented.

Embodiment VIII

[0047] As shown in FIG. 5, in this embodiment, both the bolt through holes 6 and the positioning columns 8 partially protrude from an outer ring of the annular rubber body to form arc-shaped protrusions 16. And a plurality of arc-shaped notches 17 matched with the arc-shaped protrusions 16 at the outer ring of the annular rubber body are formed in the inner ring of the metallic framework 2.

[0048] Further, an area of contact between the metallic framework 2 and the rubber gasket 3 is further increased. Thus, the bonding strength between the metallic framework 2 and the rubber gasket 3 is improved.

[0049] Preferably, in this embodiment, the positioning structures 8 have a height of 6 mm to 10 mm.

Embodiment IX

[0050] As shown in FIG. 7, in this embodiment, during the mounting of the inner barrel shaft seal mounting structure of the washing machine, firstly, the inner barrel shaft 13 penetrates through an outer barrel bottom, the inner barrel shaft 13 and the outer barrel bottom are sealed. A reducer and a motor are mounted at the outer barrel bottom. Then, the composite sealing gasket 1 is positioned on the inner barrel shaft flange 10. Then, the inner barrel flange 11 fixed to an inner barrel bottom is placed on the composite sealing gasket 1. And finally, bolts 12 are mounted and fixed. During mounting, the composite sealing gasket 1 is positioned on the inner barrel shaft flange 10 through the positioning columns 8, and the inner barrel flange 11, the composite sealing gasket 1 and the inner barrel shaft flange 10 are relatively fixed by using the bolts 12 to penetrate through the inner barrel flange 11, the composite sealing gasket 1 and the inner barrel shaft flange 10 sequentially.

[0051] Preferably, in this embodiment, the positions of the inner barrel shaft flange 10 and the composite sealing gasket 1 are relatively fixed after the convex ends of the positioning structures 8 are matched with the positioning holes 18 of the inner barrel shaft flange. The bolt holes of the inner barrel shaft flange 10 and corresponding bolt through holes of the composite sealing gasket 1 are in one-to-one correspondence and cannot relatively move. Then, corresponding positions of the bolt holes of the inner barrel flange 11 and the bolt through holes 6 of the composite sealing gasket are adjusted, and the bolts 12 are mounted after adjustment is completed. The positioning structures 8 of the composite sealing gasket have the functions that relative positions of the composite sealing gasket 1 and the inner barrel shaft flange 10 are fixed to facilitate mounting. A relative area of contact between the composite sealing gasket 1 and the inner barrel shaft flange 10 is reduced. The abrasion caused by relative movement between the composite sealing gasket 1 and the inner barrel shaft flange 10 is alleviated, so that the service life of the composite sealing gasket 1 is prolonged.

[0052] During operation of the washing machine, the motor drives the inner barrel shaft 13 to rotate and thus drives the inner barrel to rotate. In order to prevent water in the inner barrel from leaking into the outer barrel through the inner barrel shaft 13, simultaneously bear radial forces and axial forces of the inner barrel shaft flange 10 and the inner barrel flange 11 and prevent the inner barrel shaft flange 10 and the inner barrel flange 11 from loosening, shaking and water-leaking problems, the present invention adopts the composite sealing gasket 1 which can be used for effectively solving the above-mentioned problems.

[0053] What described above are only preferred embodiments of the present invention, and it should be noted that, without departing from the principle of the present invention, various changes and modifications made by those skilled in the art shall all be covered within the scope of the technical solution of the present invention.