Multi-segment dust-proof sealed deep groove ball bearing

Abstract

The utility model discloses a multi -segment type dustproof sealed deep groove ball bearing, including the outer ring, inner race, a plurality of rolling ball body, retainer and two group sealing components, the outer ring is coaxial with inner race setting, a plurality of rolling ball body is evenly distributed in the raceway between the outer ring and inner race through the retainer, two group sealing components symmetry sets up between the both sides end portion of inner race and outer ring. The utility model discloses a multi -segment splicing's sealing protection structure, realizes multiple sealing protection to the bearing inside, effectively blocks the dust, impurity and water vapor and enters the bearing inside, reduces the wear and tear of rolling part, prolongs the service life of bearing, promotes equipment operation stability.

Description

Technical Field

[0001] This utility model relates to the field of bearing application technology, and in particular to a deep groove ball bearing with a multi-stage dustproof seal. Background Technology

[0002] Deep groove ball bearings are one of the most widely used bearing types in the mechanical field. They mainly rely on rolling balls between the inner and outer rings to achieve rotational transmission.

[0003] In practical applications, bearings are often in complex environments containing dust, impurities, or moisture. The sealing structure of traditional deep groove ball bearings is mostly a single dust cover or sealing ring, which has a weak sealing barrier and can only block larger particles of impurities, but cannot effectively isolate fine dust and moisture.

[0004] After prolonged use, impurities can easily enter the bearing's internal raceway, leading to increased wear between the rolling balls and the raceway. This not only increases bearing operating noise but also shortens the bearing's service life, and in severe cases, can even cause bearing seizure, affecting the normal operation of the entire equipment. Therefore, this invention proposes a multi-stage dustproof and sealed deep groove ball bearing. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a multi-segment dustproof and sealed deep groove ball bearing. Through the multi-segment spliced ​​sealing and protection structure, multiple sealing protections are achieved for the inside of the bearing, effectively preventing dust, impurities and moisture from entering the bearing, reducing the wear of rolling parts, extending the service life of the bearing, and improving the operational stability of the equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a multi-segment dustproof and sealed deep groove ball bearing, including an outer ring, an inner ring, multiple rolling balls, a cage, and two sets of sealing assemblies. The outer ring and the inner ring are coaxially arranged, and the multiple rolling balls are evenly distributed in the raceway between the outer ring and the inner ring through the cage. The two sets of sealing assemblies are symmetrically arranged at both ends between the inner ring and the outer ring.

[0007] The sealing assembly includes a dust cover, a filter ring, and a sealing gasket arranged sequentially from the outside to the inside along the radial direction of the bearing. The multi-segment spliced ​​protective structure achieves sealing protection for the inside of the bearing.

[0008] The present invention is further configured such that: the outer peripheral wall of the dust cover is provided with a snap-fit ​​part, and the snap-fit ​​part is elastically inserted into an L-shaped connecting groove opened near one end of the inner peripheral wall of the outer ring.

[0009] The above technical solution utilizes the elastic deformation capability of the snap-fit ​​part to allow it to be quickly inserted into the L-shaped connecting groove of the outer ring, thus achieving convenient assembly of the dust cover and the outer ring. At the same time, the structure of the L-shaped connecting groove can axially limit the snap-fit ​​part, preventing the dust cover from falling off due to axial force during bearing operation, ensuring the stability of the connection between the dust cover and the outer ring, and providing the first external dust barrier for the bearing.

[0010] The present invention is further configured such that: a slot is provided on one side of the dust cover near the inner peripheral wall, and a limiting protrusion is provided near the slot; the outer peripheral wall of the filter ring is provided with a U-shaped elastic part, and the elastic part is pressed into the inside of the slot.

[0011] Through the above technical solution, the U-shaped elastic part will generate elastic pre-tightening force when pressed into the slot, so that the connection surface of the filter ring and the dust cover are tightly fitted, avoiding the infiltration of impurities due to gaps between them; at the same time, the limiting protrusion can radially limit the installation position of the filter ring, preventing the filter ring from radially shifting during bearing operation, and ensuring the coaxiality of the filter ring and the dust cover assembly.

[0012] The present invention is further configured such that: one side of the filter ring is provided with a Z-shaped edge, and is tightly fitted to the dust cover by a limiting protrusion, while the filter ring is provided with honeycomb holes inside.

[0013] Through the above technical solution, the tight fit between the Z-shaped edge and the limiting protrusion can further increase the contact area between the filter ring and the dust cover, and enhance the sealing effect; the honeycomb structure inside the filter ring can not only filter and intercept fine dust passing through the gap of the dust cover, but also achieve a small amount of airflow exchange between the bearing and the outside through the air permeability of the honeycomb holes, avoiding the accumulation of heat generated by the bearing operation, and achieving the dual functions of dust prevention and heat dissipation.

[0014] The present invention is further configured such that: a limiting groove is formed on the inner peripheral wall of the filter ring, and a limiting ring is fixedly connected to the outer peripheral wall of the sealing gasket, and the limiting ring is engaged with the limiting groove.

[0015] Through the above technical solution, the locking structure of the limiting ring and the limiting groove can realize the precise positioning and assembly of the sealing gasket and the filter ring, preventing the sealing gasket from shifting in the axial and radial directions of the bearing; at the same time, the locking connection method facilitates the replacement and maintenance of the sealing gasket in the later stage, reducing the maintenance cost of the bearing.

[0016] The present invention is further configured such that: the filter ring is made of rubber material as a whole, and its inner wall is fitted with multiple sealing rings, the inner walls of the multiple sealing rings respectively adhering to the outer wall of the inner ring.

[0017] Through the above technical solutions, the rubber filter ring has good elasticity and aging resistance, which can adapt to the slight vibration and deformation during the operation of the bearing and avoid sealing failure due to rigid connection. The fit of multiple sealing rings with the outer wall of the inner ring forms multiple axial sealing defenses, which can effectively prevent liquid impurities such as water vapor and oil from entering the bearing. At the same time, the elastic fit of the sealing ring can reduce the frictional resistance with the inner ring and does not affect the normal operating accuracy of the bearing.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The multi-segment dustproof and sealed deep groove ball bearing proposed in this utility model forms a triple sealing defense line from the outside to the inside through a multi-segment spliced ​​protective structure, thereby achieving coarse dust blocking, fine dust filtration, and liquid impurity isolation in sequence, which greatly improves the dustproof and sealing performance of the bearing and effectively reduces the wear of internal rolling parts;

[0020] 2. The multi-segment dustproof and sealed deep groove ball bearing proposed in this utility model adopts elastic snap-fit ​​and limit fitting between various sealing components, which takes into account both assembly convenience and connection stability. At the same time, the design of rubber material and honeycomb structure achieves heat dissipation and low friction operation while ensuring sealing effect, thereby extending the service life of the bearing and improving the reliability of equipment operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a multi-segment dustproof and sealed deep groove ball bearing according to the present invention;

[0022] Figure 2 This is a cross-sectional view of a multi-segment dustproof and sealed deep groove ball bearing according to the present invention.

[0023] Figure 3 This is a structural diagram of a sealing assembly in a multi-segment dustproof deep groove ball bearing according to the present invention;

[0024] Figure 4 This is a cross-sectional structural diagram of the sealing assembly in a multi-segment dustproof and sealed deep groove ball bearing according to the present invention.

[0025] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0027] In the diagram: 1. Outer ring; 11. Connecting groove; 2. Inner ring; 3. Rolling ball; 4. Cage; 5. Sealing assembly; 51. Dust cover; 511. Snap-fit ​​part; 512. Snap-fit ​​groove; 513. Limiting protrusion; 52. Filter ring; 521. Elastic part; 522. Limiting groove; 53. Sealing gasket; 531. Limiting ring; 532. Sealing ring. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0029] like Figure 1 and Figure 2 As shown, a multi-stage dustproof sealed deep groove ball bearing includes an outer ring 1, an inner ring 2, multiple rolling balls 3, a cage 4, and two sets of sealing assemblies 5. The outer ring 1 and the inner ring 2 are coaxially arranged. The multiple rolling balls 3 are evenly distributed in the raceway between the outer ring 1 and the inner ring 2 through the cage 4. The two sets of sealing assemblies 5 are symmetrically arranged at both ends between the inner ring 2 and the outer ring 1.

[0030] like Figures 2-5 As shown, the sealing assembly 5 includes a dust cover 51, a filter ring 52 and a sealing gasket 53 arranged sequentially from the outside to the inside along the radial direction of the bearing. The sealing protection of the bearing interior is achieved through a multi-segment spliced ​​protective structure.

[0031] The outer peripheral wall of the dust cover 51 is provided with a snap-fit ​​part 511, which is elastically inserted into an L-shaped connecting groove 11 opened near one end of the inner peripheral wall of the outer ring 1. The snap-fit ​​part 511 can be quickly inserted into the L-shaped connecting groove 11 of the outer ring 1 by utilizing its elastic deformation capability, so as to realize the convenient assembly of the dust cover 51 and the outer ring 1. At the same time, the structure of the L-shaped connecting groove 11 can axially limit the snap-fit ​​part 511, preventing the dust cover 51 from falling off due to axial force during the operation of the bearing, ensuring the stability of the connection between the dust cover 51 and the outer ring 1, and providing the first external dust barrier for the bearing.

[0032] like Figure 6As shown, a slot 512 is provided on one side of the dust cover 51 near the inner peripheral wall, and a limiting protrusion 513 is provided near the slot 512. A U-shaped elastic part 521 is provided on the outer peripheral wall of the filter ring 52, and the filter ring 52 is pressed into the slot 512 through the elastic part 521. When the U-shaped elastic part 521 is pressed into the slot 512, it will generate an elastic pre-tightening force, so that the connecting surface of the filter ring 52 and the dust cover 51 fits tightly, preventing impurities from seeping in due to gaps between them. At the same time, the limiting protrusion 513 can radially limit the installation position of the filter ring 52, preventing the filter ring 52 from radially shifting during bearing operation, and ensuring the coaxiality of the filter ring 52 and the dust cover 51 assembly.

[0033] like Figure 6 As shown, a Z-shaped edge is provided on one side of the filter ring 52, and it is tightly fitted to the dust cover 51 by the limiting protrusion 513. At the same time, the filter ring 52 has honeycomb holes inside. The tight fit between the Z-shaped edge and the limiting protrusion 513 can further increase the contact area between the filter ring 52 and the dust cover 51, and enhance the sealing effect. The honeycomb hole structure inside the filter ring 52 can not only filter and intercept fine dust passing through the gap of the dust cover 51, but also realize the micro-airflow exchange between the bearing and the outside through the air permeability of the honeycomb holes, avoiding the accumulation of heat generated by the bearing operation, and realizing the dual functions of dust prevention and heat dissipation.

[0034] like Figure 6 As shown, a limiting groove 522 is formed on the inner peripheral wall of the filter ring 52, and a limiting ring 531 is fixedly connected to the outer peripheral wall of the sealing gasket 53. The limiting ring 531 is engaged with the limiting groove 522. The engaging structure of the limiting ring 531 and the limiting groove 522 can realize the precise positioning and assembly of the sealing gasket 53 and the filter ring 52, preventing the sealing gasket 53 from shifting in the axial and radial directions of the bearing. At the same time, the engaging connection method facilitates the replacement and maintenance of the sealing gasket 53 in the later stage, reducing the maintenance cost of the bearing.

[0035] like Figure 6 As shown, the filter ring 52 is made entirely of rubber. The rubber filter ring 52 has good elasticity and aging resistance, and can adapt to the small vibrations and deformations during the operation of the bearing, avoiding seal failure due to rigid connection. In addition, multiple sealing rings 532 are engaged and connected to its inner wall. The inner walls of the multiple sealing rings 532 are respectively attached to the outer wall of the inner ring 2. The attachment of the multiple sealing rings 532 to the outer wall of the inner ring 2 forms multiple axial sealing defenses, which can effectively prevent liquid impurities such as water vapor and oil from entering the bearing. At the same time, the elastic attachment of the sealing rings 532 can reduce the frictional resistance with the inner ring 2, without affecting the normal operating accuracy of the bearing.

[0036] In use, external dust is first blocked by the dust cover 51. A small amount of fine dust passes through the gap of the dust cover 51 and is filtered and intercepted by the honeycomb holes of the filter ring 52. Liquid impurities such as water vapor and oil are isolated by the multiple sealing rings 532 of the sealing gasket 53, achieving comprehensive protection for the inside of the bearing. At the same time, the honeycomb holes of the filter ring 52 can realize a small amount of airflow exchange, dissipating the heat generated by the bearing operation. The rubber filter ring 52 and sealing ring 532 adapt to the vibration and deformation of the bearing, ensuring the sealing effect without affecting the operating accuracy.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-stage dustproof and sealed deep groove ball bearing, comprising an outer ring (1), an inner ring (2), a plurality of rolling balls (3), a cage (4), and two sets of sealing assemblies (5), wherein the outer ring (1) and the inner ring (2) are coaxially arranged, the plurality of rolling balls (3) are evenly distributed in the raceway between the outer ring (1) and the inner ring (2) through the cage (4), and the two sets of sealing assemblies (5) are symmetrically arranged at both ends between the inner ring (2) and the outer ring (1); Its features are: The sealing assembly (5) includes a dust cover (51), a filter ring (52) and a sealing gasket (53) arranged in sequence from the outside to the inside along the radial direction of the bearing. The sealing protection of the bearing interior is achieved through a multi-segment spliced ​​protective structure.

2. The deep groove ball bearing with a multi-segment dustproof seal according to claim 1, characterized in that: The outer peripheral wall of the dust cover (51) is provided with a snap-fit ​​part (511), and the snap-fit ​​part (511) is elastically inserted into the L-shaped connecting groove (11) opened near one end of the inner peripheral wall of the outer ring (1).

3. The deep groove ball bearing with a multi-segment dustproof seal according to claim 2, characterized in that: The dust cover (51) has a slot (512) on one side near the inner peripheral wall, and a limiting protrusion (513) is provided near the slot (512). The filter ring (52) has a U-shaped elastic part (521) on its outer peripheral wall, and is pressed into the slot (512) by the elastic part (521).

4. A deep groove ball bearing with a multi-segment dustproof seal according to claim 3, characterized in that: The filter ring (52) has a Z-shaped edge on one side and is tightly fitted to the dust cover (51) by the limiting protrusion (513). At the same time, the filter ring (52) has honeycomb holes inside.

5. A deep groove ball bearing with a multi-segment dustproof seal according to claim 4, characterized in that: The filter ring (52) has a limiting groove (522) on its inner peripheral wall, and the sealing gasket (53) has a limiting ring (531) fixedly connected to its outer peripheral wall, and the limiting ring (531) is engaged with the limiting groove (522).

6. A deep groove ball bearing with a multi-segment dustproof seal according to claim 5, characterized in that: The filter ring (52) is made of rubber and its inner wall is fitted with multiple sealing rings (532). The inner walls of the multiple sealing rings (532) are respectively attached to the outer wall of the inner ring (2).

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