A washing machine clutch sealing device

Abstract

The present invention discloses a clutch sealing device for a washing machine, comprising a bearing seat, a large water seal, an outer barrel, an inner barrel, a dehydration shaft, a sealing gasket, a bolt assembly and a bearing, wherein the sealing gasket comprises a rubber sealing ring and a frame, wherein the rubber sealing ring and the frame are made into an integral structure through a vulcanization process; the rubber sealing ring is provided with a plurality of mounting through holes, and an upper sealing boss is integrally provided on the upper end surface of the rubber sealing ring around the upper end of each mounting through hole, wherein the upper end of the upper sealing boss is tightly sealed with the outer bottom surface of the inner barrel; a lower inner sealing boss and a lower outer sealing boss are integrally provided on the lower end surface of the rubber sealing ring, wherein the lower inner sealing boss and the lower outer sealing boss are both distributed in a ring shape, and the lower ends of the lower inner sealing boss and the lower outer sealing boss are tightly sealed with the flange plane of the dehydration shaft. The above technical scheme has reasonable structural design, good sealing performance, reliable operation, long service life and good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of washing machine clutches, and in particular to a sealing device for a washing machine clutch. Background Art

[0002] At present, in the long-term washing process of fully automatic pulsator washing machines, many clothing scraps, debris, mud and sand will accumulate in the outer barrel and adhere to the outer ring of the large water seal lip. The large water seal of the existing clutch is mostly a three-lip structure, and a spring ring is provided on the outer ring of the upper lip to maintain the pressing force of the lip on the dehydration shaft. If clothing scraps, debris, mud and sand accumulate on the spring ring of the large water seal lip for a long time, the spring ring will be stuck and lose its force on the lip, which will cause water leakage and debris and other debris to enter the clutch through the large water seal, causing the clutch to fail. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a clutch sealing device for a washing machine with reasonable structural design, good sealing performance, reliable operation, long service life and good practicality.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a clutch sealing device for a washing machine, comprising a bearing seat, a large water seal, an outer barrel, an inner barrel, a dehydration shaft, a sealing gasket, a bolt assembly and a bearing, wherein the bearing is installed in a bearing chamber of the bearing seat, the dehydration shaft is installed in the inner hole of the bearing, the large water seal is installed between the dehydration shaft and the bearing seat, the upper end of the dehydration shaft is integrally provided with a connecting flange, the upper end of the connecting flange is provided with a flange plane, the sealing gasket comprises a rubber sealing ring and a frame, the rubber sealing ring and the frame The frame is made into an integral structure through a vulcanization process; a plurality of mounting through holes are arranged on the rubber sealing ring, and an upper sealing boss is integrally arranged on the upper end surface of the rubber sealing ring around the upper port of each mounting through hole, and the upper end of the upper sealing boss is tightly sealed with the outer bottom surface of the inner barrel; a lower inner sealing boss and a lower outer sealing boss are integrally arranged on the lower end surface of the rubber sealing ring, and the lower inner sealing boss and the lower outer sealing boss are both distributed in a ring shape, and the lower ends of the lower inner sealing boss and the lower outer sealing boss are tightly sealed with the flange plane of the dehydration shaft.

[0005] The present invention is further configured as follows: the sealing gasket is installed on the upper end surface of the connecting flange, the bottom of the inner barrel is installed on the upper end surface of the sealing gasket, and the inner barrel, the sealing gasket and the connecting flange are fastened by a bolt assembly.

[0006] The present invention is further configured as follows: a plurality of first bolt connection through holes are provided at the bottom of the inner barrel, a mounting through hole is provided on the sealing gasket aligned with the position of each first bolt connection through hole, a second bolt connection through hole is provided on the connecting flange of the dehydration shaft aligned with the position of each mounting through hole, and the inner barrel, the sealing gasket and the connecting flange are connected and fixed by a bolt assembly.

[0007] The present invention is further configured as follows: a circle of annular bosses are integrally provided at the edge of the lower end surface of the frame of the sealing gasket, and an air cavity is formed between the annular bosses, the large water seal, the outer barrel and the dehydration shaft.

[0008] The present invention is further configured as follows: the large water seal includes a large water seal sealing boss, an inner sealing lip and an outer sealing lip, the inner sealing lip is arranged higher than the lower end surface of the annular boss, and the inner sealing lip is located in the air cavity.

[0009] The present invention is further configured such that: the outer circle of the large water seal is interference fit with the inner hole of the bearing seat, and the inner sealing lip of the large water seal is in contact with the outer circle of the water seal fitting portion of the dehydration shaft.

[0010] The present invention is further configured such that: the bottom of the outer barrel is connected to the large water seal, and the large water seal sealing boss and the outer sealing lip are both tightly attached to the bottom of the outer barrel to form a seal.

[0011] The present invention is further configured such that a gap is left between the sealing gasket and the outer barrel.

[0012] The advantages of the present invention are: compared with the prior art, the structural setting of the present invention is more reasonable. After the sealing gasket is tightened by the bolt assembly, the upper sealing boss, the lower inner sealing boss and the lower outer sealing boss are all subjected to the extrusion force, so that the upper end of the upper sealing boss is tightly sealed with the outer bottom surface of the inner barrel; the lower ends of the lower inner sealing boss and the lower outer sealing boss are tightly sealed with the flange plane of the dehydration shaft.

[0013] When water is poured into the outer barrel and the water level reaches the lower end surface of the annular boss of the sealing gasket, a closed space is formed in the air cavity. Air pressure exists, and the water level in the outer barrel continues to rise, and the water level in the air cavity here will not continue to rise. This isolates foreign matter such as mud, clothing debris, etc. from adhering to the large water seal lip, thereby effectively avoiding clutch leakage and debris infiltration into the clutch. The structure is reasonably designed, the sealing performance is good, the operation is reliable, the service life is long, and the practicability is good.

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 The enlarged schematic diagram of the middle part I;

[0017] Figure 3 This is a schematic diagram of the structure of a sealing gasket according to an embodiment of the present invention;

[0018] Figure 4 for Figure 3 Schematic cross-sectional view of AA in the figure;

[0019] Figure 5 is a top view schematic diagram of a sealing gasket according to an embodiment of the present invention;

[0020] Figure 6 It is a cross-sectional schematic diagram of a large water seal according to an embodiment of the present invention;

[0021] Figure 7 A schematic diagram of the structure of the outer barrel after water is filled in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In the description of this embodiment, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as limiting the present invention. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The present invention discloses a clutch sealing device for a washing machine, comprising a bearing seat 1, a large water seal 2, an outer barrel 3, an inner barrel 4, a dehydration shaft 5, a sealing gasket 6, a bolt assembly 7 and a bearing 8, wherein the bearing 8 is installed in a bearing chamber of the bearing seat 1, the dehydration shaft 5 is installed in an inner hole of the bearing 8, the large water seal 2 is installed between the dehydration shaft 5 and the bearing seat 1, the upper end of the dehydration shaft 5 is integrally provided with a connecting flange 51, the upper end of the connecting flange 51 is provided with a flange plane, the sealing gasket 6 comprises a rubber sealing ring 61 and a skeleton 62, the rubber sealing ring 61 and the skeleton 62 are manufactured by a vulcanization process An integrated structure; a plurality of mounting through holes are arranged on the rubber sealing ring 6, and an upper sealing boss 61 is integrally arranged on the upper end surface of the rubber sealing ring 61 around the upper port of each mounting through hole, and the upper end of the upper sealing boss 611 is tightly sealed with the outer bottom surface of the inner barrel 4; a lower inner sealing boss 612 and a lower outer sealing boss 613 are integrally arranged on the lower end surface of the rubber sealing ring 61, and the lower inner sealing boss 612 and the lower outer sealing boss 613 are both distributed in a ring shape, and the lower ends of the lower inner sealing boss 612 and the lower outer sealing boss 613 are tightly sealed with the flange plane of the dehydration shaft 5.

[0024] Preferably, the sealing gasket 6 described in this embodiment is installed on the upper end surface of the connecting flange 51, the bottom of the inner barrel 4 is installed on the upper end surface of the sealing gasket 6, and the inner barrel 4, the sealing gasket 6 and the connecting flange 51 are fastened by the bolt assembly 7.

[0025] In order to make the structural setting of the present invention more reasonable, as a preferred embodiment, a plurality of first bolt connection through holes are arranged at the bottom of the inner barrel 4 in this embodiment, and a mounting through hole 60 is arranged on the sealing gasket 6 to align with the position of each first bolt connection through hole, and a second bolt connection through hole is arranged on the connecting flange of the dehydration shaft 5 to align with the position of each mounting through hole 60, and the inner barrel 4, the sealing gasket 6 and the connecting flange 51 are connected and fixed by a bolt assembly 7.

[0026] A circle of annular bosses 621 are integrally provided at the edge of the lower end surface of the skeleton 62 of the sealing gasket 6 , and an air cavity 9 is formed between the annular bosses 621 , the large water seal 2 , the outer barrel 3 and the dehydration shaft 5 .

[0027] The large water seal 2 includes a large water seal sealing boss 21 , an inner sealing lip 22 and an outer sealing lip 23 . The inner sealing lip 22 is arranged higher than the lower end surface of the annular boss 621 , and the inner sealing lip 22 is located in the air cavity 9 .

[0028] The outer circle of the large water seal 2 is interference fit with the inner hole of the bearing seat 1 , and the inner sealing lip 22 of the large water seal 2 is in contact with the outer circle of the water seal fitting part of the dehydration shaft 5 .

[0029] The bottom of the outer barrel 3 is connected to the large water seal 2, and the large water seal sealing boss 21 and the outer sealing lip 23 are both tightly attached to the bottom of the outer barrel 3 to form a seal.

[0030] A gap is left between the sealing gasket 6 and the outer barrel 3 .

[0031] In actual application, after the sealing gasket is tightened by the bolt assembly, the upper sealing boss, the lower inner sealing boss and the lower outer sealing boss are all subjected to the extrusion force, so that the upper end of the upper sealing boss is tightly sealed with the outer bottom surface of the inner barrel; the lower ends of the lower inner sealing boss and the lower outer sealing boss are tightly sealed with the flange plane of the dehydration shaft.

[0032] When water is poured into the outer barrel and the water level reaches the lower end surface of the annular boss of the sealing gasket, a closed space is formed in the air cavity. Air pressure exists, and the water level in the outer barrel continues to rise, and the water level in the air cavity here will not continue to rise. This isolates foreign matter such as mud, clothing debris, etc. from adhering to the large water seal lip, thereby effectively avoiding clutch leakage and debris infiltration into the clutch. The structure is reasonably designed, the sealing performance is good, the operation is reliable, the service life is long, and the practicability is good.

[0033] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A clutch sealing device for a washing machine, comprising a bearing seat (1), a large water seal (2), an outer barrel (3), an inner barrel (4), a dehydration shaft (5), a sealing gasket (6), a bolt assembly (7) and a bearing (8), wherein the bearing (8) is installed in a bearing chamber of the bearing seat (1), the dehydration shaft (5) is installed in an inner hole of the bearing (8), the large water seal (2) is installed between the dehydration shaft (5) and the bearing seat (1), the upper end of the dehydration shaft (5) is integrally provided with a connecting flange (51), and the upper end of the connecting flange (51) is provided with a flange plane, characterized in that: The sealing gasket (6) comprises a rubber sealing ring (61) and a frame (62), wherein the rubber sealing ring (61) and the frame (62) are formed into an integral structure through a vulcanization process; the rubber sealing ring (6) is provided with a plurality of mounting through holes, and an upper sealing boss (611) is integrally provided on the upper end surface of the rubber sealing ring (61) around the upper end of each mounting through hole, and the upper end of the upper sealing boss (611) is tightly sealed with the outer bottom surface of the inner barrel (4); a lower inner sealing boss (612) and a lower outer sealing boss (613) are integrally provided on the lower end surface of the rubber sealing ring (61), and the lower inner sealing boss (612) and the lower outer sealing boss (613) are both distributed in a ring shape, and the lower ends of the lower inner sealing boss (612) and the lower outer sealing boss (613) are tightly sealed with the flange plane of the dehydration shaft (5).

2. A washing machine clutch sealing device according to claim 1, characterized in that: The sealing gasket (6) is mounted on the upper end surface of the connecting flange (51), the bottom of the inner barrel (4) is mounted on the upper end surface of the sealing gasket (6), and the inner barrel (4), the sealing gasket (6) and the connecting flange (51) are fastened by a bolt assembly (7).

3. A washing machine clutch sealing device according to claim 2, characterized in that: The bottom of the inner barrel (4) is provided with a plurality of first bolt connection through holes, the sealing gasket (6) is provided with a mounting through hole (60) aligned with the position of each first bolt connection through hole, the connection flange of the dehydration shaft (5) is provided with a second bolt connection through hole aligned with the position of each mounting through hole (60), and the inner barrel (4), the sealing gasket (6) and the connection flange (51) are connected and fixed by a bolt assembly (7).

4. A washing machine clutch sealing device according to claim 1 or 3, characterized in that: A circle of annular bosses (621) are integrally provided at the edge of the lower end surface of the frame (62) of the sealing gasket (6), and an air cavity (9) is formed between the annular bosses (621), the large water seal (2), the outer barrel (3) and the dehydration shaft (5).

5. A washing machine clutch sealing device according to claim 4, characterized in that: The large water seal (2) comprises a large water seal sealing boss (21), an inner sealing lip (22) and an outer sealing lip (23); the inner sealing lip (22) is arranged higher than the lower end surface of the annular boss (621), and the inner sealing lip (22) is located in the air cavity (9).

6. A washing machine clutch sealing device according to claim 5, characterized in that: The outer circle of the large water seal (2) is interference fit with the inner hole of the bearing seat (1), and the inner sealing lip (22) of the large water seal (2) is in contact with the outer circle of the water seal fitting portion of the dehydration shaft (5).

7. A washing machine clutch sealing device according to claim 6, characterized in that: The bottom of the outer barrel (3) is connected to the large water seal (2), and the large water seal sealing boss (21) and the outer sealing lip (23) are both tightly attached to the bottom of the outer barrel (3) to form a seal.

8. A washing machine clutch sealing device according to claim 1, characterized in that: A gap is left between the sealing gasket (6) and the outer barrel (3).

Images