Bearing seal assemblies and washers
By providing the first seal and the second seal in the bearing seal assembly of the drum washing machine, the problem of water leakage in the outer cylinder caused by wear of the bearing water seal is solved, and a higher sealing effect and service life is achieved.
Patent Information
- Application Number
- CN202420741810.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-04-10
AI Technical Summary
During the high-speed rotation of the drum washing machine, the water seal on the inner side of the bearing is easily worn, resulting in water leakage in the outer drum.
A bearing seal assembly is designed, including a first seal and a second seal. The first seal is arranged on one side of the first bearing for water sealing the first bearing; the second seal is arranged between the first bearing and the second bearing to prevent leakage of water flow when the first seal is worn through the magnetic fluid sealing principle.
The first bearing is water-sealed by the first seal, which reduces the probability of the bearing being corroded; the magnetic fluid seal of the second seal reduces the probability of water leakage in the outer cylinder, which effectively solves the water leakage problem caused by wear of the water seal.
Smart Images
Figure CN222731962U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of washing machines, and in particular relates to a bearing sealing assembly and a washing machine. Background Art
[0002] Washing machines can be divided into drum washing machines and pulsator washing machines according to different washing principles. The speed of drum washing machines is higher than that of pulsator washing machines. The drum washing machine includes a rotatable inner drum and an outer drum for fixing the inner drum and holding washing water. The inner drum is fixed to the outer drum through a rotating shaft, a bearing and a bearing seat.
[0003] However, during the high-speed rotation of the inner cylinder, the water seal inside the bearing is easily worn, resulting in water leakage in the outer cylinder. Utility Model Content
[0004] The embodiments of the present application provide a bearing seal assembly and a washing machine, which can reduce the probability of water leakage in the outer drum.
[0005] In a first aspect, an embodiment of the present application provides a bearing seal assembly, which is applied to a washing machine, wherein the washing machine comprises an inner drum, an outer drum, a rotating shaft, a first bearing, a second bearing and a bearing seat, wherein the rotating shaft is connected to the inner drum, the bearing seat is connected to the outer drum, the first bearing and the second bearing are rotatably connected between the rotating shaft and the bearing seat, respectively, and the bearing seal assembly comprises:
[0006] a first sealing member, arranged on a side of the first bearing facing away from the second bearing, the first sealing member and the first bearing being arranged to form a first accommodation space, the first accommodation space being used to contain water;
[0007] The second sealing member is disposed between the first bearing and the second bearing and abuts against the bearing seat to prevent water in the first accommodating space from flowing to the second bearing.
[0008] Optionally, the second sealing member and the rotating shaft are sealed by a magnetic fluid.
[0009] Optionally, the second sealing member includes a magnetic pole and a permanent magnet, and the magnetic pole and the permanent magnet are used to cooperate with the magnetic field generated under the rotation of the rotating shaft to drive the magnetic liquid to form a sealing ring.
[0010] Optionally, the second sealing member includes two magnetic poles, and the permanent magnet is arranged between the two magnetic poles.
[0011] Optionally, the magnetic poles are respectively in contact with the rotating shaft and the bearing seat, and the permanent magnets are respectively spaced apart from the rotating shaft and the bearing seat.
[0012] Optionally, one of the two magnetic poles is in contact with the first bearing, and the other of the two magnetic poles is spaced from the second bearing.
[0013] Optionally, an annular groove is provided on the rotating shaft corresponding to the magnetic pole, and the annular groove is used to accommodate the magnetic liquid.
[0014] Optionally, the second sealing member further includes a sealing ring, and the sealing ring is arranged between the magnetic pole and the bearing seat.
[0015] Optionally, the first sealing member is made of elastic material.
[0016] In a second aspect, an embodiment of the present application further provides a washing machine, comprising:
[0017] An inner drum for carrying clothes;
[0018] An outer cylinder, sleeved on the outside of the inner cylinder;
[0019] A rotating shaft connected to the inner cylinder;
[0020] A bearing seat connected to the outer cylinder;
[0021] A first bearing, rotatably connected between the rotating shaft and the bearing seat;
[0022] a second bearing, rotatably connected between the rotating shaft and the bearing seat, and spaced apart from the first bearing;
[0023] The bearing sealing assembly as described in any one of the above items is arranged between the rotating shaft and the bearing seat to seal the first bearing and the second bearing.
[0024] In the bearing seal assembly and washing machine of the embodiments of the present application, a first seal is provided on one side of the first bearing to perform water sealing on the first bearing, thereby preventing water in the outer drum from entering between the first bearing and the bearing seat, thereby reducing the probability of corrosion of the first bearing; furthermore, a second seal is provided between the first bearing and the second bearing, thereby preventing water in the water seal from flowing to the second bearing and leaking to the outside of the outer drum when the first seal is worn, thereby reducing the probability of water leakage in the outer drum. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.
[0026] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.
[0027] Figure 1 A schematic diagram of the structure of a washing machine provided in an embodiment of the present application.
[0028] Figure 2 This is a structural schematic diagram of a part of the structure of the washing machine provided in an embodiment of the present application from a first angle.
[0029] Figure 3 A schematic structural diagram of a portion of the structure of the washing machine provided in an embodiment of the present application at a second angle.
[0030] Figure 4 for Figure 3 The schematic diagram of the first cross-sectional structure of part of the structure of the washing machine along AA is shown.
[0031] Figure 5 for Figure 3 The schematic diagram of the second cross-sectional structure of part of the structure of the washing machine along AA is shown.
[0032] Figure 6 for Figure 5 The schematic diagram of the structure of the partial B of the washing machine is shown, that is, the bearing seal assembly. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0034] Washing machines can be divided into drum washing machines and pulsator washing machines according to different washing principles. The washing method of drum washing machines is designed to imitate the principle of a hammer hitting clothes. The huge centrifugal force generated by the rotation of the drum makes repeated movements, and the detergent and water work together to wash the clothes clean. The bottom of the drum of the pulsator washing machine is equipped with a disc impeller with protruding ribs on it. Driven by the impeller, the water flow in the drum forms a vortex that sometimes rotates to the right and sometimes to the left, driving the fabric to rotate and roll to remove the dirt on the clothes. Due to the different washing principles of drum washing machines and pulsator washing machines, the speed of drum washing machines is higher than that of pulsator washing machines. However, during the high-speed rotation of the inner drum of the drum washing machine, the water seal on the inside of the bearing is easily worn, resulting in water leakage in the outer drum.
[0035] In order to reduce the occurrence of the above situation, an embodiment of the present application provides a bearing seal assembly and a washing machine, which will be described below in conjunction with the accompanying drawings.
[0036] See also Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the structure of a washing machine provided in an embodiment of the present application. Figure 2 This is a schematic structural diagram of a portion of the structure of a washing machine provided in an embodiment of the present application from a first angle, Figure 3 This is a schematic structural diagram of a portion of the structure of the washing machine provided in an embodiment of the present application from a second angle. Figure 4 for Figure 3 The first cross-sectional structure schematic diagram of a part of the structure of the washing machine along AA is shown. The embodiment of the present application provides a washing machine 100, which is described by taking the washing machine 100 as a drum washing machine as an example, but it should not be understood as limiting the type of washing machine.
[0037] Exemplarily, the washing machine 100 includes an inner drum 110 , an outer drum 120 , a rotating shaft 130 , a bearing housing 140 , a first bearing 150 , and a second bearing 160 .
[0038] The inner drum 110 is used to carry clothes, and the inner drum 110 can drive the clothes to be turned over, and the clothes can be cleaned under the combined action of detergent and water.
[0039] The outer drum 120 is sleeved on the outer side of the inner drum 110 . The outer drum 120 is used to contain washing water, and the outer drum 120 can play a bearing role for the inner drum 110 .
[0040] The rotating shaft 130 is a transmission component that drives the inner cylinder 110 to rotate. The rotating shaft 130 can transmit the power of the motor to the inner cylinder 110, and the rotating shaft 130 is connected to the inner cylinder 110. It should be noted that the rotating shaft 130 can be the rotating shaft of the motor, and the rotating shaft 130 can also be a component connected to the rotating shaft of the motor.
[0041] The bearing seat 140 is connected to the outer cylinder 120 . The bearing seat 140 is used to support the bearing. The bearing can rotate relative to the rotating shaft 130 , and can buffer the rotation of the rotating shaft 130 to prevent the rotating shaft 130 from being worn.
[0042] The first bearing 150 and the second bearing 160 are rotatably connected between the rotating shaft 130 and the bearing seat 140, respectively, and the first bearing 150 and the second bearing 160 are arranged at intervals, and can jointly bear and balance the movement of the rotating shaft 130, thereby reducing or avoiding the wear of the rotating shaft 130. It can be understood that the first bearing 150 and the second bearing 160 are both annular, surrounding the outer side of the rotating shaft 130, so as to isolate the wear problem between the rotating shaft 130 and the bearing seat 140.
[0043] The first bearing 150 and the second bearing 160 are usually filled with lubricating oil to extend the service life of the first bearing 150 and the second bearing 160. In order to prevent the washing water inside the outer drum 120 from leaking out when the inner drum 110 rotates, a water seal is usually used between the bearing and the bearing seat 140. At the same time, the water seal can also prevent the lubricating oil inside the bearing from overflowing into the outer drum 120 and causing contamination of the washing water. However, since the inner drum 110 needs to rotate at a high speed, the water seal will be worn after long-term operation, resulting in water leakage in the outer drum 120.
[0044] In order to reduce the occurrence of the above-mentioned problems, an embodiment of the present application provides a bearing seal assembly, which will be described below in conjunction with the accompanying drawings.
[0045] Please combine Figures 1 to 4 Also see Figure 5 and Figure 6 As shown, Figure 5 for Figure 3 The second cross-sectional structure schematic diagram of a part of the washing machine along AA is shown, Figure 6 for Figure 5 The partial B of the washing machine is a structural diagram of the bearing seal assembly. The present application provides a bearing seal assembly 200 , which is disposed between the rotating shaft 130 and the bearing seat 140 to seal the first bearing 150 and the second bearing 160 .
[0046] Illustratively, the bearing seal assembly 200 includes a first seal 210 and a second seal 220 .
[0047] The first seal 210 is arranged on the side of the first bearing 150 away from the second bearing 160. The first seal 210 and the first bearing 150 are surrounded to form a first accommodation space 212, and the first accommodation space 212 is used to hold water. It can be understood that the first seal 210 is a seal that acts as a water seal for the first bearing 150. The first seal 210 is located between the first bearing 150 and the inner cylinder 110. On the one hand, it can prevent the water in the outer cylinder 120 from leaking out to the outside of the outer cylinder 120 through the first bearing 150 and the second bearing 160, and can prevent the probability of the first bearing 150 and the second bearing 160 being corroded; on the other hand, it can also prevent the lubricating oil in the first bearing 150 from entering the washing water in the outer cylinder 120. Among them, the material of the first seal 210 can be an elastic material, such as rubber, silicone, etc. The first seal 210 can rotate with the rotating shaft 130 and can play a sealing role from the axial direction.
[0048] The first sealing member 210 may be annular in shape, surrounding the outer side of the rotating shaft 130 , and respectively abutting against the bearing seat 140 and the first bearing 150 to form a first accommodating space 212 .
[0049] The second seal 220 is disposed between the first bearing 150 and the second bearing 160, and abuts against the bearing seat 140 to prevent the water in the first accommodating space 212 from flowing to the second bearing 160 and leaking out. It can be understood that the second seal 220 can be used as a supplement to the first seal 210, that is, in the case of failure of the first seal 210, as a sealing supplement, thereby preventing the water in the first seal 210 from leaking out of the outer cylinder 120 through the first bearing 150 and the second bearing 160. In addition, the space between the first bearing 150 and the second bearing 160 can be fully utilized without occupying additional space, thereby reducing the problem of space waste.
[0050] In the bearing sealing assembly 200 provided in the embodiment of the present application, a first seal 210 is provided on one side of the first bearing 150 to perform water sealing on the first bearing 150, thereby preventing water in the outer cylinder 120 from entering between the first bearing 150 and the bearing seat 140, thereby reducing the probability of corrosion of the first bearing 150; furthermore, a second seal 220 is provided between the first bearing 150 and the second bearing 160, which can prevent water in the water seal from flowing to the second bearing 160 and leaking to the outside of the outer cylinder 120 when the first seal 210 is worn, thereby reducing the probability of water leakage of the outer cylinder 120.
[0051] It should be noted that the sealing principle of the second seal 220 is different from that of the first seal 210. If the second seal is set as a water seal like the first seal, the seal may also be worn and leak. Therefore, in order to avoid this situation, the second seal 220 and the rotating shaft 130 of the embodiment of the present application are sealed by magnetic fluid. Magnetic fluid sealing is developed on the basis of magnetic fluid. When magnetic fluid is injected into the gap of the magnetic field, it can fill the entire gap to form a liquid O-ring. The function of magnetic fluid sealing is to transfer the rotational motion to the sealed container, which can be used for vacuum sealing.
[0052] Exemplarily, the second seal 220 includes a magnetic pole 221 and a permanent magnet 222, and the magnetic pole 221 and the permanent magnet 222 are used to cooperate with the magnetic field generated under the rotation of the rotating shaft 130 to drive the magnetic fluid or the magnetic liquid to form a sealing ring. In other words, the magnetic pole 221 and the permanent magnet 222 are used to generate a magnetic field, and the magnetic liquid forms a sealing ring under the force of the magnetic field. Among them, the magnetic liquid uses a lipid or silicone oil-based liquid with lubricating properties as a base carrier liquid, and a magnetic conductive solid with a diameter of 10 nanometers is dispersed therein. When the magnetic liquid or the magnetic fluid is injected into the magnetic circuit gap formed by the high-performance permanent magnet, the pole shoe with good magnetic conductivity and the rotating shaft, the magnetic fluid forms a plurality of liquid O-rings in the gap under the action of the magnetic field, thereby playing a sealing role.
[0053] The magnetic pole 221 and the permanent magnet 222 are both annular in shape, so as to be easily fixed on the outside of the rotating shaft 130 , or to be easily connected and fixed to the bearing seat 140 .
[0054] Exemplarily, the second seal 220 may include two magnetic poles 221, and the permanent magnet 222 is disposed between the two magnetic poles 221 and respectively abuts against the two magnetic poles 221 to fix the permanent magnet 222. The magnetic poles 221 abut against the rotating shaft 130 and the bearing seat 140, respectively, and the permanent magnet 222 is spaced apart from the rotating shaft 130 and the bearing seat 140, respectively. One of the two magnetic poles 221 abuts against the first bearing 150, and the other of the two magnetic poles 221 is spaced apart from the second bearing 160, which can prevent the second seal 220 from moving between the first bearing 150 and the second bearing 160, resulting in axial wear of the second seal 220. Furthermore, a blocking member (not shown in the figure) can be provided on one side of the magnetic pole 221 close to the second bearing 160 to further prevent the second seal 220 from moving.
[0055] Exemplarily, an annular groove 132 is provided at the rotating shaft 130 corresponding to the magnetic pole 221. The annular groove 132 is annularly surrounding the rotating shaft 130. The magnetic pole 221 abuts against the rotating shaft 130, so that the annular groove 132 can be sealed to allow the annular groove 132 to accommodate the magnetic fluid. The annular groove 132 is used to accommodate the magnetic fluid, or the annular groove 132 is used to provide a space for the magnetic fluid to move, so as to form a sealing ring for sealing.
[0056] It should be noted that in order to improve the sealing performance between the magnetic pole 221 and the bearing seat 140, the second sealing member 220 of the embodiment of the present application also includes a sealing ring 223, which is sleeved on the magnetic pole 221 and arranged between the magnetic pole 221 and the bearing seat 140, thereby improving the sealing performance between the magnetic pole 221 and the bearing seat 140 and further reducing the probability of water leakage in the outer cylinder 120.
[0057] Since the magnetic fluid forms a liquid O-ring seal without solid contact wear, the life of the second seal 220 depends on the service life of the first bearing 150 and the second bearing 160, and no maintenance is required during this period. And since the magnetic fluid seal is a liquid-solid seal, the wear and leakage problem caused by the traditional solid-solid seal is solved, and 100% power feed transmission has no torque loss.
[0058] In the bearing seal assembly 200 and the washing machine 100 provided in the embodiment of the present application, a first seal 210 is provided on one side of the first bearing 150 to perform a water seal on the first bearing 150, thereby preventing water in the outer drum 120 from entering between the first bearing 150 and the bearing seat 140, thereby reducing the probability of corrosion of the first bearing 150; furthermore, a second seal 220 is provided between the first bearing 150 and the second bearing 160, thereby preventing water in the water seal from flowing to the second bearing 160 and leaking to the outside of the outer drum 120 when the first seal 210 is worn, thereby reducing the probability of water leakage of the outer drum 120.
[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0060] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.
[0061] The bearing seal assembly and washing machine provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A bearing seal assembly, applied to a washing machine, comprising an inner drum, an outer drum, a rotating shaft, a first bearing, a second bearing and a bearing seat, wherein the rotating shaft is connected to the inner drum, the bearing seat is connected to the outer drum, the first bearing and the second bearing are rotatably connected between the rotating shaft and the bearing seat, respectively, and characterized in that: The bearing seal assembly comprises: a first sealing member, arranged on a side of the first bearing facing away from the second bearing, the first sealing member and the first bearing being arranged to form a first accommodation space, the first accommodation space being used to contain water; The second sealing member is disposed between the first bearing and the second bearing and abuts against the bearing seat to prevent water in the first accommodating space from flowing to the second bearing.
2. The bearing seal assembly according to claim 1, characterized in that: The second sealing member and the rotating shaft are sealed by magnetic fluid.
3. The bearing seal assembly according to claim 2, characterized in that: The second sealing member includes a magnetic pole and a permanent magnet, and the magnetic pole and the permanent magnet are used to cooperate with the magnetic field generated under the rotation of the rotating shaft to drive the magnetic liquid to form a sealing ring.
4. The bearing seal assembly according to claim 3, characterized in that: The second sealing member includes two magnetic poles, and the permanent magnet is disposed between the two magnetic poles.
5. The bearing seal assembly according to claim 4, characterized in that: The magnetic poles are respectively in contact with the rotating shaft and the bearing seat, and the permanent magnets are respectively spaced apart from the rotating shaft and the bearing seat.
6. The bearing seal assembly according to claim 4, characterized in that: One of the two magnetic poles is in contact with the first bearing, and the other of the two magnetic poles is spaced apart from the second bearing.
7. The bearing seal assembly according to claim 3, characterized in that: The rotating shaft is provided with an annular groove corresponding to the magnetic pole, and the annular groove is used to contain the magnetic liquid.
8. The bearing seal assembly according to claim 3, characterized in that: The second sealing member further includes a sealing ring, which is arranged between the magnetic pole and the bearing seat.
9. The bearing seal assembly according to any one of claims 1 to 8, characterized in that: The first sealing member is made of elastic material.
10. A washing machine, characterized in that: include: An inner drum for carrying clothes; An outer cylinder, sleeved on the outside of the inner cylinder; A rotating shaft connected to the inner cylinder; A bearing seat connected to the outer cylinder; A first bearing, rotatably connected between the rotating shaft and the bearing seat; a second bearing, rotatably connected between the rotating shaft and the bearing seat, and spaced apart from the first bearing; The bearing sealing assembly according to any one of claims 1 to 9, wherein the bearing sealing assembly is arranged between the rotating shaft and the bearing seat to seal the first bearing and the second bearing.