Low torque thrust ball bearing for shock absorber

Abstract

The utility model discloses a low torque thrust ball bearing for shock absorber belongs to bearing technical field, and its technical scheme main points include two axle rings, be provided with steel ball subassembly between two axle rings, and the outer surface fixedly connected with connecting assembly of steel ball subassembly, connecting assembly includes fixed ring, both sides of fixed ring top and bottom are all fixedly connected with arc plate, and fixed ring sleeve connects the outer surface of steel ball subassembly, and the side of two arc plates of top and bottom away from fixed ring all extend to the outside of axle ring, solve the existing thrust ball bearing use effect is not good, in the actual use process, because lack connection structure, sealing ring and sealing ring only rely on assembly gap and realize preliminary fixation, under the axial impact force and vibration effect that shock absorber high frequency reciprocating motion generates, extremely easy to displace, looseness, lead to sealing failure, seriously influence the normal use of bearing, reduced the practicability of the device problem.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a low-torque thrust ball bearing for shock absorbers. Background Technology

[0002] Low-torque thrust ball bearings are a type of axial load bearing that achieves extremely low frictional torque through structural design, material selection, surface treatment, and lubrication scheme optimization. Their core feature is that while bearing axial loads, they minimize operating resistance, making them suitable for high-frequency reciprocating and low-resistance operating conditions. They are widely used in shock absorbers, precision transmissions, aerospace, and other fields.

[0003] Most existing bearings consist of a sealed gap formed between the cage, housing ring, and shaft ring, which provides a certain degree of protection. They rely on the lubricating oil circulation system in the equipment components. However, when the thrust ball is exposed to the external environment, especially in harsh environments, external impurities, moisture, and other adverse factors can easily enter the bearing and contaminate the grease, leading to premature bearing failure.

[0004] An existing patent (publication number: CN222526704U) discloses a thrust ball bearing. It connects the housing, cage, and shaft ring into a single unit via sealing rings and sealing rings installed on the outside of the cage and the inside of the housing and shaft rings. This facilitates bearing movement and ensures a sealed connection. Furthermore, the rolling elements are wrapped in the moving grooves within the shaft and housing ring grooves, increasing the arc surface area connecting the rolling elements to the housing and shaft rings as they roll. This enhances the bearing's load-bearing area, allowing the rolling elements to withstand a certain radial force and improving the bearing's service life.

[0005] Existing patents offer solutions to the above problems, but their effectiveness is poor. In actual use, due to the lack of a connecting structure, the sealing ring and sealing ring are only initially fixed by the assembly gap. Under the axial impact force and vibration generated by the high-frequency reciprocating motion of the shock absorber, displacement and loosening are very likely to occur, leading to seal failure. This seriously affects the normal use of the bearing and reduces the practicality of the device.

[0006] Therefore, a low-torque thrust ball bearing for shock absorbers is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a low-torque thrust ball bearing for shock absorbers, which can solve the problem that existing thrust ball bearings have poor performance. In actual use, due to the lack of a connecting structure, the sealing ring and sealing ring are only initially fixed by the assembly gap. Under the axial impact force and vibration generated by the high-frequency reciprocating motion of the shock absorber, displacement and loosening are very likely to occur, leading to seal failure, which seriously affects the normal use of the bearing and reduces the practicality of the device.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a low-torque thrust ball bearing for a shock absorber, comprising two shaft rings, a steel ball assembly disposed between the two shaft rings, and a connecting assembly movably connected to the outer surface of the steel ball assembly. The connecting assembly includes a fixed ring, with arc-shaped plates fixedly connected to both sides of the top and bottom of the fixed ring, and the fixed ring is sleeved on the outer surface of the steel ball assembly. The sides of the top and bottom arc-shaped plates away from the fixed ring extend to the outer side of the shaft ring, and a T-shaped block is fixedly connected to the side of the arc-shaped plates away from the fixed ring. The top and bottom of the fixed ring are provided with annular plates, and annular grooves are provided on opposite sides of the two annular plates, and the annular grooves engage with the T-shaped blocks.

[0009] Preferably, the steel ball assembly includes a fixing ring, the fixing ring having a plurality of placement holes inside, and ball bearings arranged in a ring on the surface of the fixing ring inside the placement holes. A connecting ring is movably connected to the top of the fixing ring, and the connecting ring has a plurality of limiting holes inside, the limiting holes being arranged in a ring on the surface of the connecting ring and coaxial with the placement holes, and the inner wall of the limiting holes contacting the surface of the ball bearings. A double-layered annular buckle is provided at the bottom of the connecting ring, and the double-layered annular buckle is engaged with the fixing ring.

[0010] Preferably, the top of the fixing ring is provided with a positioning slot for use with a double-layer annular buckle, and the placement hole is located between the positioning slots.

[0011] Preferably, a rubber sealing ring is fixedly connected to the side opposite to the connecting ring of the fixing ring.

[0012] Preferably, each of the two shaft rings has a connecting groove on its opposite side, and the fixing ring and the connecting ring are located in the two connecting grooves respectively.

[0013] Preferably, the inner walls of the two connecting grooves are provided with rotating grooves on the side away from the steel ball assembly, and the balls are slidably connected inside the rotating grooves.

[0014] Preferably, both shaft rings have annular grooves on the side away from the fixed ring, which are used to cooperate with the annular plate, and the surface of the annular plate is in contact with the inner wall of the annular groove.

[0015] Preferably, the inner wall of the annular groove has positioning holes on both sides near the fixed ring for use with the arc-shaped plate, and the surface of the arc-shaped plate is in contact with the inner wall of the positioning hole.

[0016] Preferably, rubber rings are fixedly connected to the opposite sides of the two shaft rings, and the rubber rings are tightly fitted to the fixed rings.

[0017] Preferably, the two bearing rings are made of stainless steel and the surfaces of the two bearing rings are coated with an anti-corrosion coating.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. By setting up a steel ball assembly, this application can accurately limit the ball through the placement hole of the fixed ring and the limiting hole of the connecting ring. With the engagement and clamping of the double-layer ring buckle and the positioning groove of the fixed ring, it ensures that the ball always runs stably along the preset trajectory, avoiding radial movement and additional friction. At the same time, with the help of the guide structure formed by the connecting groove and the rotating groove, the traditional sliding friction can be transformed into low-resistance rolling friction, significantly reducing the bearing running torque and improving the practicality of the device.

[0020] 2. By setting up a connecting component, this application can form an outer peripheral positioning of the steel ball assembly through a fixed ring. With the guiding effect of the arc plate penetrating the positioning hole of the shaft ring, the coaxiality calibration of the steel ball assembly and the two shaft rings can be achieved. At the same time, the T-shaped block at the end of the arc plate and the annular groove of the ring plate engage to flexibly lock the shaft ring and the steel ball assembly into a whole. This not only prevents the components from loosening under the high-frequency vibration of the shock absorber, but also ensures low torque transmission efficiency and improves the ease of use of the device because the movable connection characteristics of the connecting component and the steel ball assembly do not restrict the relative movement of the shaft rings due to the movable connection characteristics of the connecting component and the steel ball assembly. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the low-torque thrust ball bearing for shock absorbers according to this utility model;

[0022] Figure 2 This is a connection diagram of the shaft ring, steel ball assembly, and connecting assembly of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the shaft ring of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;

[0025] Figure 5 This is a schematic diagram of the steel ball assembly of this utility model.

[0026] In the diagram, 1. Shaft ring; 2. Steel ball assembly; 201. Fixing ring; 202. Placement hole; 203. Ball bearing; 204. Connecting ring; 205. Restricting hole; 206. Double-layer annular buckle; 3. Connecting assembly; 301. Fixing ring; 302. Arc plate; 303. T-block; 304. Annular plate; 305. Annular groove; 4. Positioning groove; 5. Rubber sealing ring; 6. Connecting groove; 7. Rotating groove; 8. Annular groove; 9. Positioning hole; 10. Rubber ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 The present invention provides the following technical solution:

[0029] A low-torque thrust ball bearing for a shock absorber includes two shaft rings 1, a steel ball assembly 2 disposed between the two shaft rings 1, and a connecting assembly 3 movably connected to the outer surface of the steel ball assembly 2. The connecting assembly 3 includes a fixed ring 301, and arc-shaped plates 302 are fixedly connected to both the top and bottom sides of the fixed ring 301. The fixed ring 301 is sleeved on the outer surface of the steel ball assembly 2. The sides of the two arc-shaped plates 302 away from the fixed ring 301 extend to the outer side of the shaft ring 1, and a T-shaped block 303 is fixedly connected to the side of the arc-shaped plate 302 away from the fixed ring 301. Annular plates 304 are provided at the top and bottom of the fixed ring 301. Annular grooves 305 are provided on the opposite sides of the two annular plates 304, and the annular grooves 305 engage with the T-shaped blocks 303.

[0030] In this embodiment: the combination of the placement hole 202 and the limiting hole 205 provides a stable rotation space for the ball bearing 203, allowing it to rotate smoothly within it. Simultaneously, the double-layer annular buckle 206 and the fixing ring 201 form a buckle structure, tightly connecting the connecting ring 204 and the fixing ring 201, achieving radial limiting of the ball bearing 203 and completing the rapid installation of the steel ball assembly 2, thus improving the ease of use of the steel ball assembly 2. Then, the combination of the arc plate 302, T-shaped block 303, annular plate 304, and annular groove 305 forms a buckle locking structure. The structure allows the shaft ring 1 to move smoothly under the constraint of the arc plate 302, ensuring the accurate installation of the shaft ring 1 and facilitating the loading and unloading of the equipment. At the same time, the annular groove 305 of the annular plate 304 is connected to the T-shaped block 303 and rotated, so that the annular plate 304 and the arc plate 302 are locked together, completing the tight connection between the two shaft rings 1 and the fixed ring 301. This ensures that the ball 203 assembly can be accurately embedded in the shaft ring 1, allowing the steel ball assembly 2 to rotate smoothly between the two shaft rings 1. This can transform traditional sliding friction into low-resistance rolling friction, significantly reducing the bearing operating torque and improving the ease of use of the device.

[0031] Specifically, such as Figure 5 As shown, the steel ball assembly 2 includes a fixing ring 201. The fixing ring 201 has several placement holes 202 inside, and the placement holes 202 are filled with balls 203 arranged in a ring on the surface of the fixing ring 201. The top of the fixing ring 201 is movably connected to a connecting ring 204, and the connecting ring 204 has several limiting holes 205 inside. The limiting holes 205 are arranged in a ring on the surface of the connecting ring 204 and are on the same axis as the placement holes 202. The inner wall of the limiting holes 205 is in contact with the surface of the balls 203. The bottom of the connecting ring 204 is provided with a double-layer annular buckle 206, and the double-layer annular buckle 206 is engaged with the fixing ring 201.

[0032] Specifically, such as Figure 5 As shown, the top of the fixing ring 201 is provided with a positioning slot 4 for use with the double-layer annular buckle 206, and the placement hole 202 is located between the positioning slots 4.

[0033] Specifically, such as Figure 5 As shown, rubber sealing rings 5 ​​are fixedly connected to the opposite side of the fixing ring 201 and the connecting ring 204.

[0034] Specifically, such as Figure 2 , Figure 3 As shown, each of the two shaft rings 1 has a connecting groove 6 on its opposite side, and the fixing ring 201 and the connecting ring 204 are located in the two connecting grooves 6 respectively.

[0035] Specifically, such as Figure 2 , Figure 3As shown, the inner walls of the two connecting grooves 6 are provided with rotating grooves 7 on the side away from the steel ball assembly 2, and the ball 203 is slidably connected inside the rotating grooves 7.

[0036] In this embodiment: the double-layer annular buckle 206 and the positioning groove 4 work together to allow the connecting ring 204 to move smoothly under the restriction of the double-layer annular buckle 206, ensuring that the connecting ring 204 and the fixed ring 201 are accurately installed, so that the ball 203 is clamped between the placement hole 202 and the limiting hole 205, thereby achieving radial limiting of the ball 203 and completing the rapid installation of the steel ball assembly 2. At the same time, with the help of the guide structure formed by the connecting groove 6 and the rotating groove 7, the steel ball assembly 2 can rotate smoothly between the two shaft rings 1, which can transform the traditional sliding friction into low-resistance rolling friction, significantly reducing the bearing operating torque. Combined with the rubber sealing ring 5, it can fill the gap between the steel ball assembly 2 and the shaft ring 1, forming a flexible sealing barrier, which can effectively block the penetration of impurities, extend the service life of the steel ball assembly 2, and improve the stability of the steel ball assembly 2 in use.

[0037] Specifically, such as Figure 2 , Figure 3 As shown, both shaft rings 1 have annular grooves 8 on the side away from the fixed ring 301, which are used to cooperate with the annular plate 304, and the surface of the annular plate 304 is in contact with the inner wall of the annular groove 8.

[0038] Specifically, such as Figure 2 , Figure 3 As shown, the inner wall of the annular groove 8 is provided with positioning holes 9 on both sides near the fixed ring 301, which are used to cooperate with the arc plate 302, and the surface of the arc plate 302 is in contact with the inner wall of the positioning hole 9.

[0039] In this embodiment: the use of the arc plate 302 and the positioning hole 9 allows the shaft ring 1 to move smoothly under the restriction of the arc plate 302, ensuring the accurate installation of the shaft ring 1 and facilitating the loading and unloading of the equipment. At the same time, the use of the annular plate 304 and the annular groove 8 can form a rotating structure, allowing the annular plate 304 to rotate within the annular groove 8. This can both lock the shaft ring 1 and house the annular plate 304 within the annular groove 8, preventing loosening of the connection due to accidental external contact, ensuring the overall assembly stability of the bearing, and improving the ease of use of the connecting component 3.

[0040] Specifically, such as Figure 2 , Figure 3 As shown, rubber rings 10 are fixedly connected to the opposite sides of the two shaft rings 1, and the rubber rings 10 are tightly fitted with the fixed ring 301.

[0041] Specifically, such as Figure 1 , Figure 2 , Figure 3As shown, the two shaft rings 1 are made of stainless steel, and the surfaces of the two shaft rings 1 are coated with anti-corrosion paint.

[0042] In this embodiment: During installation, the rubber ring 10 deforms, filling the gap between the shaft ring 1 and the fixed ring 301 to form a flexible sealing barrier. This effectively blocks the penetration of impurities and absorbs and buffers external impacts, reducing the impact of vibration on the overall structural stability of the bearing. At the same time, the surface of the shaft ring 1 is coated with an anti-corrosion coating, which effectively prevents external impurities from corroding the shaft ring 1, extending the service life of the equipment, ensuring stable operation of the equipment, and improving the stability of the device.

[0043] Working principle: When installing the low-torque thrust ball bearing in the shock absorber, the steel ball assembly 2 is first pre-assembled. The balls 203 are placed into the placement hole 202 of the retaining ring 201. Then, the double-layer annular buckle 206 at the bottom of the connecting ring 204 is aligned and engaged with the positioning groove 4 at the top of the retaining ring 201, clamping the balls 203 between the placement hole 202 and the limiting hole 205, achieving radial limiting of the balls 203 and completing the rapid installation of the steel ball assembly 2. Next, the positioning hole 9 of the shaft ring 1 is aligned with the arc plate 302 and pushed to ensure accurate installation of the shaft ring 1. The retaining ring 201 and connecting ring 204 of the steel ball assembly 2 can be embedded into the connecting grooves 6 on opposite sides of the two shaft rings 1, while ensuring that the balls 203 are engaged in the rotation grooves 7 on the inner wall of the connecting grooves 6, facilitating subsequent rolling of the balls 203. Providing a stable track, after installation, the annular groove 305 at the bottom of the annular plate 304 is aligned with the T-block 303 and rotated to lock in place, thereby flexibly connecting the two shaft rings 1 and the steel ball assembly 2 into a whole, ensuring assembly coaxiality. When the bearing is put into use, the axial load generated by the shock absorber is transmitted to the ball 203 through the shaft ring 1. The ball 203 rolls smoothly along the trajectory formed by the rotating groove 7, the placement hole 202 and the limiting hole 205, converting sliding friction into low-resistance rolling friction, significantly reducing operating torque. In addition, the deformation generated by the rubber sealing ring 5 and the rubber ring 10 during installation can fill the gap in the assembly, forming a sealing barrier to prevent impurities from entering, and absorbing external impacts and buffering vibrations, ensuring the structural stability and service life of the bearing, and ensuring its long-term stable operation under the complex working conditions of the shock absorber.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-torque thrust ball bearing for a shock absorber, comprising two shaft rings (1), characterized in that: A steel ball assembly (2) is provided between two shaft rings (1), and a connecting assembly (3) is movably connected to the outer surface of the steel ball assembly (2). The connecting assembly (3) includes a fixed ring (301). Arc plates (302) are fixedly connected to both sides of the top and bottom of the fixed ring (301), and the fixed ring (301) is sleeved on the outer surface of the steel ball assembly (2). The sides of the two arc plates (302) at the top and bottom that are away from the fixed ring (301) extend to the outside of the shaft ring (1), and a T-shaped block (303) is fixedly connected to the side of the arc plate (302) away from the fixed ring (301). Annular plates (304) are provided at the top and bottom of the fixed ring (301), and annular slots (305) are provided on opposite sides of the two annular plates (304), and the annular slots (305) are engaged with the T-shaped blocks (303).

2. A low-torque thrust ball bearing for a shock absorber according to claim 1, characterized in that: The steel ball assembly (2) includes a fixing ring (201), which has several placement holes (202) inside. The placement holes (202) are provided with balls (203) arranged in a ring on the surface of the fixing ring (201). The top of the fixing ring (201) is movably connected to a connecting ring (204), which has several limiting holes (205) inside. The limiting holes (205) are arranged in a ring on the surface of the connecting ring (204) and are on the same axis as the placement holes (202). The inner wall of the limiting holes (205) is in contact with the surface of the balls (203). The bottom of the connecting ring (204) is provided with a double-layer annular buckle (206), which is engaged with the fixing ring (201).

3. A low-torque thrust ball bearing for a shock absorber according to claim 2, characterized in that: The top of the fixing ring (201) is provided with a positioning slot (4) for use with the double-layer ring buckle (206), and the placement hole (202) is located between the positioning slots (4).

4. A low-torque thrust ball bearing for a shock absorber according to claim 2, characterized in that: Both the fixing ring (201) and the connecting ring (204) are fixedly connected to rubber sealing rings (5) on the opposite side.

5. A low-torque thrust ball bearing for a shock absorber according to claim 1, characterized in that: Each of the two shaft rings (1) has a connecting groove (6) on one side opposite to the other, and the fixing ring (201) and the connecting ring (204) are located in the two connecting grooves (6) respectively.

6. A low-torque thrust ball bearing for a shock absorber according to claim 5, characterized in that: The inner walls of the two connecting grooves (6) are provided with rotating grooves (7) on the side away from the steel ball assembly (2), and the ball (203) is slidably connected inside the rotating groove (7).

7. A low-torque thrust ball bearing for a shock absorber according to claim 1, characterized in that: Both shaft rings (1) have annular grooves (8) on the side away from the fixed ring (301) for use with the annular plate (304), and the surface of the annular plate (304) is in contact with the inner wall of the annular groove (8).

8. A low-torque thrust ball bearing for a shock absorber according to claim 7, characterized in that: The inner wall of the annular groove (8) is provided with positioning holes (9) on both sides near the fixed ring (301) for use with the arc plate (302), and the surface of the arc plate (302) is in contact with the inner wall of the positioning hole (9).

9. A low-torque thrust ball bearing for a shock absorber according to claim 1, characterized in that: Rubber rings (10) are fixedly connected to the opposite side of the two shaft rings (1), and the rubber rings (10) are tightly fitted with the fixed ring (301).

10. A low-torque thrust ball bearing for a shock absorber according to claim 1, characterized in that: The two shaft rings (1) are made of stainless steel and the surfaces of the two shaft rings (1) are coated with anti-corrosion paint.

Images