Plane pressure bearing with double-layer sealing

Abstract

The utility model relates to the technical field of bearings, and discloses a plane pressure bearing with double-layer sealing, which comprises a bearing main body, an inner groove is arranged in the bearing main body, a plurality of elastic bulges are fixedly connected to the inner side wall of the inner groove in an annular array, and auxiliary bosses are symmetrically arranged at the inner bottom end of the inner groove. A sealing assembly for sealing the inner groove is arranged at the upper top end of the bearing body, an auxiliary structure for further improving sealing is arranged at the upper top end of the bearing body, the upper cover is located in the bearing body through a flexible liquid-proof step plate and a limiting groove, the limiting groove is matched with an elastic protrusion on the inner wall of the inner groove, and therefore the upper cover is clamped. The upper cover is arranged in the bearing body to ensure that the upper cover can be stably located in the bearing body, the flexible liquid-proof step plate and the auxiliary boss are matched with each other to form a corresponding step shape, the situation that lubricating oil leaks can be avoided, the sealing effect of the bearing is enhanced, and meanwhile the sealing performance is further improved by arranging an auxiliary mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and in particular to a plane pressure bearing with double-layer sealing. Background Art

[0002] Plane pressure bearings, also called plane bearings or pressure bearings, are more common in McPherson suspension types of cars. They are mainly located at the top of the shock absorber, between the spring and the shock absorber top glue, bearing the upper and lower pressures and able to rotate freely. Plane bearings play the role of shock absorption and active connection of the car body in the car to avoid direct friction between the shafts.

[0003] During use, the bearings in the prior art are generally provided with corresponding sealing covers on their surfaces to increase their sealing effect and prevent external pollutants from entering the interior of the bearings and damaging the rollers inside the bearings. However, most bearings and sealing covers are directly connected, which makes the sealing of the sealing covers insufficient, making it easy for external pollutants to enter. At the same time, the lubricating oil inside the bearings is easy to leak through the gap between the sealing cover and the bearings, increasing the friction of the bearings and affecting the transmission efficiency. Utility Model Content

[0004] The utility model aims to provide a plane pressure bearing with double-layer sealing, so as to solve the problem that the bearing and the sealing cover are directly clamped together, which makes the sealing of the sealing cover insufficient and easily causes external pollutants to enter. At the same time, the lubricating oil inside the bearing is easy to leak through the gap between the sealing cover and the bearing, thereby increasing the friction of the bearing and affecting the transmission efficiency.

[0005] The utility model provides the following technical solution: a plane pressure bearing with double-layer sealing, comprising a bearing body, an inner groove is opened inside the bearing body, a plurality of elastic protrusions are fixedly connected in a circular array on the inner side wall of the inner groove, auxiliary bosses are symmetrically arranged at the inner bottom end of the inner groove, a sealing component for closing the inner groove is arranged at the upper top end of the bearing body, and an auxiliary structure for further increasing the sealing is arranged at the upper top end of the bearing body.

[0006] By adopting the above scheme, the use of the sealing assembly can effectively seal the inner groove, which can prevent external dust, impurities, moisture, etc. from entering the interior of the bearing, thereby greatly improving the sealing performance of the bearing body, and the auxiliary structure further enhances this sealing effect, so that the bearing body can maintain a good working condition even in harsh environments. In addition, the use of the sealing assembly and the auxiliary structure can make the disassembly and assembly of the bearing body easier, which is convenient for subsequent maintenance.

[0007] As a preferred embodiment of the above technical solution, the sealing assembly includes an upper cover that is clamped on the top of the bearing body, and the outer wall of the upper cover is provided with a plurality of limit grooves that cooperate with the elastic protrusions to form a clamping connection, and the lower bottom end of the upper cover is fixedly connected with a flexible liquid-proof step plate that cooperates with the auxiliary boss, and the auxiliary boss and the flexible liquid-proof step plate are combined to form a sealing step.

[0008] By adopting the above scheme, the internal space of the bearing body is effectively closed by clamping the upper cover on the top of the bearing body. The cooperation between the limit groove and the elastic protrusion opened on the upper cover, and the combination of the flexible liquid-proof step plate and the auxiliary boss, together form a sealing step, which greatly improves the sealing performance of the bearing and effectively prevents the entry of external contaminants. In addition, the cooperation between the limit groove and the elastic protrusion can enable the bearing body to remain stable during operation, reducing loosening or damage caused by vibration or impact.

[0009] As a preferred embodiment of the above technical solution, the auxiliary structure includes a first sealing ring and a second sealing ring bonded to the junction of the top end of the bearing body and the upper cover, the first sealing ring is bonded to the outer ring of the bearing body and the top end of the upper cover, and the second sealing ring is bonded to the inner ring of the bearing body and the top end of the upper cover.

[0010] By adopting the above scheme, the first sealing ring and the second sealing ring not only enhance the sealing between the bearing body, but also strengthen the connection between the bearing body and the upper cover, and the two sealing rings are fixed to the bearing body and the upper cover by bonding. When the sealing ring needs to be replaced or repaired, it can be easily removed from the bearing body and replaced with a new sealing ring, which reduces the maintenance cost and difficulty.

[0011] As a preferred embodiment of the above technical solution, a lubrication port is provided at the upper top of the upper cover, and a blocking block is provided at the position of the upper top of the upper cover corresponding to the lubrication port.

[0012] With the above solution, the provision of the lubrication port makes the lubrication operation of the bearing body very convenient. The operator can directly add lubricating oil to the inside of the bearing body through the lubrication port without disassembling the bearing body or performing complicated operations. After the addition is completed, it can be sealed with a block, which effectively prevents external pollutants from entering the inside of the bearing body through the lubrication port, thereby keeping the inside of the bearing clean and extending the service life of the bearing body.

[0013] As a preferred embodiment of the above technical solution, the inner bottom end of the inner groove is fixedly connected with a connecting seat, and the outer wall of the connecting seat is inlaid with a plurality of bearing balls.

[0014] By adopting the above scheme, the use of the connecting seat and the bearing ball can make the connection between the bearing bodies more convenient. The installation can be completed by simply placing the connecting seat directly into the inner groove, and then installing the upper cover. This method can greatly enhance the maintenance effect.

[0015] As a preferred embodiment of the above technical solution, an inclined surface is formed at the inner ring of the upper top end of the bearing body.

[0016] By adopting the above solution, the setting of the inclined surface can further increase the installation effect during use and can achieve the purpose of rapid installation.

[0017] As a preferred embodiment of the above technical solution, the flexible liquid-proof step plate and the elastic protrusion are both made of elastic rubber.

[0018] By adopting the above scheme, the elastic rubber has excellent elasticity and sealing properties, can fit tightly to the bearing body and the upper cover, and effectively prevent contaminants from entering the interior of the bearing body. When a sealing step is formed, the flexible liquid-proof step plate can fully fill the gap between the auxiliary boss and the bearing body to achieve a better sealing effect.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] In the utility model, an upper cover is provided. During use, the upper cover is located inside the bearing body through a flexible liquid-proof step plate and a limiting groove, wherein the limiting groove cooperates with the elastic protrusion on the inner wall of the inner groove, thereby achieving a snap connection with the upper cover to ensure that the upper cover can be stably located inside the bearing body, and the flexible liquid-proof step plate cooperates with the auxiliary boss to form a corresponding step shape, which can avoid leakage of lubricating oil and enhance its sealing effect. At the same time, an auxiliary mechanism is provided to further increase the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a plane pressure bearing with double-layer seal;

[0022] Figure 2 It is a schematic diagram of the split structure of the bearing body in a plane pressure bearing with double-layer seal;

[0023] Figure 3 It is a schematic diagram of the split structure of the bearing body in a plane pressure bearing with double-layer seal;

[0024] Figure 4 The figure is a schematic diagram of the top view of the bearing body in a plane pressure bearing with double-layer seal.

[0025] In the figure: 1. bearing body; 11. inner groove; 12. connecting seat; 13. bearing ball; 14. auxiliary boss; 15. elastic protrusion; 16. inclined surface; 2. upper cover; 21. blocking block; 22. flexible liquid-proof step plate; 23. lubrication port; 24. limiting groove; 3. first sealing ring; 31. second sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Example 1

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a plane pressure bearing with double-layer sealing, including a bearing body 1, an inner groove 11 is opened inside the bearing body 1, a plurality of elastic protrusions 15 are fixedly connected to the inner side wall of the inner groove 11 in a circular array, auxiliary bosses 14 are symmetrically arranged at the inner bottom end of the inner groove 11, a sealing component for sealing the inner groove 11 is arranged at the upper top of the bearing body 1 to prevent external contaminants from entering the interior of the bearing body 1 and affecting the life of the bearing body 1, and an auxiliary structure for further increasing the sealing is arranged at the upper top of the bearing body 1.

[0028] like Figure 2 and Figure 3 As shown, the sealing assembly includes an upper cover 2 which is snap-fitted to the top of the bearing body 1. The outer wall of the upper cover 2 is provided with a plurality of limit grooves 24 which cooperate with the elastic protrusions 15 and form a snap-fit, so as to limit the upper cover 2 and further reduce the impact generated by the bearing body 1 during use. The lower bottom end of the upper cover 2 is fixedly connected with a flexible liquid-proof step plate 22 which cooperates with the auxiliary boss 14. The auxiliary boss 14 and the flexible liquid-proof step plate 22 are combined to form a sealing step, so as to further increase the sealing effect and prevent the leakage of lubricating oil.

[0029] like Figure 2 and Figure 3 As shown, the auxiliary structure includes a first sealing ring 3 and a second sealing ring 31 bonded to the junction of the top end of the bearing body 1 and the upper cover 2. The first sealing ring 3 is bonded to the outer ring of the top end of the bearing body 1 and the upper cover 2, and the second sealing ring 31 is bonded to the inner ring of the top end of the bearing body 1 and the upper cover 2. The use of two sealing rings can greatly enhance the sealing effect and prevent pollutants from entering the interior of the bearing body 1 through the gap between the bearing body 1 and the upper cover 2.

[0030] like Figure 2 and Figure 4As shown, a lubrication port 23 is provided at the upper top of the upper cover 2, and a blocking block 21 is provided at the position of the upper top of the upper cover 2 corresponding to the lubrication port 23 so that lubricating oil can be added quickly. A connecting seat 12 is fixedly connected to the inner bottom end of the inner groove 11, and a plurality of bearing balls 13 are inlaid on the outer wall of the connecting seat 12. An inclined surface 16 is formed at the inner ring of the upper top of the bearing body 1, and the flexible liquid-proof step plate 22 and the elastic protrusion 15 are both made of elastic rubber.

[0031] Working principle: When in use, the staff can directly press the upper cover 2 toward the upper top of the bearing body 1 by gravity. At this time, the flexible liquid-proof step plate 22 and the elastic protrusion 15 on the outer wall of the upper cover 2 will be deformed, so that the upper cover 2 can easily enter the inner groove 11. When the upper cover 2 is installed in place, the elastic protrusion 15 is located inside the limiting groove 24, completing the clamping of the upper cover 2. The flexible liquid-proof step plate 22 will automatically extend and cover the upper top of the auxiliary boss 14 due to the correct installation of the upper cover 2, and form a corresponding step shape, which can prevent the lubricating oil from leaking. At the same time, the stepped shape can prevent external dust from directly entering the inner groove 1 1, causing wear to the connecting seat 12 and the bearing ball 13. In order to further increase the sealing effect between the upper cover 2 and the bearing body 1, a first sealing ring 3 and a second sealing ring 31 are bonded at the two intersections of the bearing body 1 and the upper cover 2. Due to the bonding setting, the first sealing ring 3 and the second sealing ring 31 can be quickly replaced when they are damaged. When it is necessary to add lubricating oil to the connecting seat 12 and the bearing ball 13 inside the inner groove 11, the staff can take out the block 21 from the inside of the lubrication port 23, so as to add lubricating oil to the inside of the inner groove 11 through the lubrication port 23. After the addition is completed, the block 21 can be reset to ensure its sealing effect.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A plane pressure bearing with double-layer sealing, comprising a bearing body (1), characterized in that: An inner groove (11) is provided inside the bearing body (1), a plurality of elastic protrusions (15) are fixedly connected in an annular array to the inner side wall of the inner groove (11), auxiliary bosses (14) are symmetrically arranged at the inner bottom end of the inner groove (11), a sealing component for sealing the inner groove (11) is arranged at the upper top of the bearing body (1), and an auxiliary structure for further enhancing sealing is arranged at the upper top of the bearing body (1).

2. A planar pressure bearing with double-layer sealing according to claim 1, characterized in that: The sealing assembly comprises an upper cover (2) clamped on the top of the bearing body (1); the outer wall of the upper cover (2) is provided with a plurality of limit grooves (24) which cooperate with the elastic protrusions (15) and form a clamping connection; the lower bottom end of the upper cover (2) is fixedly connected with a flexible liquid-proof step plate (22) which cooperates with the auxiliary boss (14); the auxiliary boss (14) and the flexible liquid-proof step plate (22) are combined to form a sealing step.

3. A planar pressure bearing with double-layer sealing according to claim 1, characterized in that: The auxiliary structure comprises a first sealing ring (3) and a second sealing ring (31) bonded to the junction between the upper top of the bearing body (1) and the upper cover (2); the first sealing ring (3) is bonded to the outer ring of the upper top of the bearing body (1) and the upper cover (2); and the second sealing ring (31) is bonded to the inner ring of the upper top of the bearing body (1) and the upper cover (2).

4. A planar pressure bearing with double-layer sealing according to claim 2, characterized in that: The upper top of the upper cover (2) is provided with a lubrication port (23), and a blocking block (21) is provided at a position of the upper top of the upper cover (2) corresponding to the lubrication port (23).

5. A planar pressure bearing with double-layer sealing according to claim 1, characterized in that: The inner bottom end of the inner groove (11) is fixedly connected to a connecting seat (12), and the outer wall of the connecting seat (12) is inlaid with a plurality of bearing balls (13).

6. A planar pressure bearing with double-layer sealing according to claim 1, characterized in that: An inclined surface (16) is formed at the inner ring of the upper top end of the bearing body (1).

7. A planar pressure bearing with double-layer sealing according to claim 2, characterized in that: The flexible liquid-proof step plate (22) and the elastic protrusion (15) are both made of elastic rubber.

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