Bicycle stem bearing assembly with waterproof seal

Abstract

The utility model relates to the technical field of bicycle bearing, disclose a kind of bicycle tap steering bearing assembly with waterproof seal, including upper dust cover and lower dust cover, the bottom of upper dust cover is slidably connected with inclined pipe, the middle part of inclined pipe is equipped with gap, the periphery of inclined pipe and lower dust cover is equipped with rotating assembly, the middle part of upper dust cover is equipped with sealing assembly, the sealing assembly includes upper seal ring and lower seal ring, upper seal ring and lower seal ring are symmetrically installed in the middle part of upper dust cover.In the utility model, support piece provides support for upper seal ring and lower seal ring, annular spiral spring provides elastic support for it, upper dust cover provides fixing effect for it, so that upper seal ring and lower seal ring can operate stably, so as to realize blocking to water vapor and dust, so that bearing assembly can not be affected by dust and water vapor, so that it can operate stably.

Description

Technical Field

[0001] This utility model relates to the field of bicycle bearing technology, and in particular to a bicycle handlebar steering bearing assembly with a waterproof seal. Background Technology

[0002] The bicycle stem bearing assembly is a core component connecting the frame and the fork, ensuring the smooth and flexible operation of the steering system. This directly affects the precision of handling and riding stability. Its waterproof and sealed design effectively resists rain, mud, and dust, significantly reducing the risk of bearing wear and corrosion. This allows the steering mechanism to maintain a light and smooth operating feel even in harsh environments, while also significantly extending its service life, reducing maintenance needs, and providing riders with durable and reliable steering performance and safety.

[0003] Existing equipment typically consists of an upper dust cover, a lower dust cover, a bearing, and an O-ring. The upper and lower dust covers provide a fixing effect for the bearing, allowing it to run stably in the bicycle's head tube. The upper dust cover and the O-ring work together to improve the seal at the connection between the bearing and the bicycle handlebars, preventing moisture and dust from coming into contact with the bearing. This ensures stable bearing operation and prevents the bicycle's steering from being affected.

[0004] Existing equipment relies on O-rings for sealing and waterproofing. However, while O-rings block dust and moisture, some dust and moisture can still enter, causing contact between the bearing and the O-ring. This affects the bearing's operation and reduces its lifespan. To address this issue, a bicycle steering bearing assembly with a waterproof seal is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bicycle steering bearing assembly with a waterproof seal, aiming to improve the problem that the existing equipment only has an O-ring seal structure, which cannot block all dust and moisture, allowing some moisture and dust to still come into contact with the bearing, thus affecting the operation and service life of the bearing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bicycle handlebar steering bearing assembly with a waterproof seal includes an upper dust cover and a lower dust cover. The bottom of the upper dust cover is slidably connected to an inclined tube, and a notch is provided in the middle of the inclined tube. Rotating components are installed on the outer periphery of both the inclined tube and the lower dust cover. A sealing component is installed in the middle of the upper dust cover.

[0008] The sealing assembly includes an upper sealing ring and a lower sealing ring, which are symmetrically installed in the middle of the upper dust cover. A support plate is fixedly connected inside the upper and lower sealing rings. An annular helical spring is provided in the middle of the upper and lower sealing rings. An annular stop block is fixedly connected to the outer side of the upper and lower sealing rings. A blocking edge is fixedly connected to the outer side of the upper and lower sealing rings. An annular groove is opened on the outer side of the upper and lower sealing rings.

[0009] As a further description of the above technical solution:

[0010] An annular block is fixedly connected to the middle of the upper dust cover, and a groove is provided in the middle of the upper dust cover;

[0011] As a further description of the above technical solution:

[0012] A flow guide groove is provided in the middle of the upper dust cover, and the flow guide groove is located at the bottom of the annular block;

[0013] As a further description of the above technical solution:

[0014] A drain outlet is provided in the middle of the upper dust cover, and the drain outlet penetrates the upper dust cover;

[0015] As a further description of the above technical solution:

[0016] The rotating assembly includes two inner rings, which are slidably connected to the outer periphery of the inclined tube and the lower dust cover, respectively. A sealing plate is installed on the outer periphery of the inner rings, and a shell is installed on the outer side of the sealing plate.

[0017] As a further description of the above technical solution:

[0018] A retaining ring is installed between the outer shell and the inner ring, and a plurality of balls are provided in the middle of the retaining ring;

[0019] As a further description of the above technical solution:

[0020] A rubber ring is installed in the middle of the upper dust cover.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the upper and lower sealing rings are supported by a support plate, elastically supported by a ring-shaped helical spring, and fixed by an upper dust cover, so that the upper and lower sealing rings can operate stably, thereby blocking water vapor and dust, so that the bearing assembly is not affected by dust and water vapor and can operate stably.

[0023] 2. In this utility model, the upper dust cover provides support for the annular block, so that it can cooperate with the groove to block dust and moisture. The guide groove and the drain outlet cooperate with each other so that the dust and moisture blocked by the annular block and the groove can be discharged from the upper dust cover, thereby avoiding the phenomenon of blockage. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a bicycle handlebar steering bearing assembly with a waterproof seal proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the inclined tube of a bicycle handlebar steering bearing assembly with a waterproof seal, as proposed in this utility model.

[0026] Figure 3 A cross-sectional schematic diagram of the upper dust cover of a bicycle handlebar steering bearing assembly with a waterproof seal, as proposed in this utility model.

[0027] Figure 4 This is a cross-sectional schematic diagram of an annular block of a bicycle handlebar steering bearing assembly with a waterproof seal, as proposed in this utility model.

[0028] Figure 5 This is a schematic diagram of the upper sealing ring of a bicycle handlebar steering bearing assembly with a waterproof seal, as proposed in this utility model.

[0029] Figure 6 This is a cross-sectional schematic diagram of the housing of a bicycle handlebar steering bearing assembly with a waterproof seal, as proposed in this utility model.

[0030] Legend:

[0031] 1. Upper dust cover; 2. Rubber ring; 3. Annular block; 4. Guide groove; 5. Drain outlet; 6. Upper sealing ring; 7. Lower sealing ring; 8. Annular groove; 9. Annular helical spring; 10. Support plate; 11. Annular stop block; 12. Blocking edge; 13. Groove; 14. Outer shell; 15. Sealing plate; 16. Inner ring; 17. Fixing ring; 18. Ball bearing; 19. Inclined tube; 20. Lower dust cover. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 , Figure 4 and Figure 5 This utility model provides an embodiment of a bicycle steering bearing assembly with a waterproof seal, comprising an upper dust cover 1 and a lower dust cover 20. The upper dust cover 1 and the lower dust cover 20 cooperate to support and fix the bearing assembly, ensuring stable operation and preventing displacement. A slanted tube 19 is slidably connected to the bottom of the upper dust cover 1. The slanted tube 19 has a notch in its middle. The slanted tube 19 and the upper dust cover 1 cooperate to form a waterproof seal, providing a waterproof effect for the bearing assembly and extending its service life. The outer periphery of both the slanted tube 19 and the lower dust cover 20 are securely fitted. Equipped with a rotating assembly, the handlebars can rotate after being mounted on the head tube. A sealing assembly is installed in the center of the upper dust cover 1. This sealing assembly provides a seal and waterproofing at the connection between the bearing assembly and the handlebars, ensuring stable operation of the bearing assembly and extending its service life. The sealing assembly includes an upper sealing ring 6 and a lower sealing ring 7, symmetrically installed in the center of the upper dust cover 1. The upper and lower sealing rings 6 and 7 work together to seal the connection between the bearing assembly and the handlebars, preventing moisture from contacting the bearing and ensuring stable operation of the bearing assembly. This will be affected. Support plates 10 are fixedly connected inside both the upper sealing ring 6 and the lower sealing ring 7. Annular helical springs 9 are installed in the middle of both the upper sealing ring 6 and the lower sealing ring 7. The support plates 10 provide support for the upper sealing ring 6 and the lower sealing ring 7, preventing them from collapsing during operation. The annular helical springs 9 provide elasticity to the upper sealing ring 6 and the lower sealing ring 7, allowing them to rotate and recover after deformation under force, thus ensuring stable operation. Annular blocks 11 and blocking edges 12 are fixedly connected to the outer sides of both the upper sealing ring 6 and the lower sealing ring 7. The shaped stop 11 and the blocking edge 12 cooperate to block moisture and dust, allowing the bearing to operate stably. Both the upper sealing ring 6 and the lower sealing ring 7 have annular grooves 8 on their outer sides. These grooves block dust and moisture from entering the installation gaps of the upper and lower sealing rings 6 and 7, ensuring their stable operation. Through the cooperation of the various structures within the sealing assembly, the connection between the bearing assembly and the bicycle handlebars is sealed, blocking external moisture and dust, thus ensuring stable operation of the bearing assembly and extending its service life.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6An annular block 3 is fixedly connected to the middle of the upper dust cover 1. A groove 13 and a guide groove 4 are provided in the middle of the upper dust cover 1, located at the bottom of the annular block 3. A drain outlet 5 is provided in the middle of the upper dust cover 1, penetrating through the upper dust cover 1. The annular block 3 and the groove 13 cooperate to block dust and moisture, preventing them from contacting the bearing assembly and ensuring stable operation. The guide groove 4 and the drain outlet 5 cooperate to discharge the blocked moisture and dust, preventing them from remaining in the upper dust cover 1 for a long time, allowing the sealing assembly to block moisture and dust again. The rotating assembly includes two inner rings 16, which are slidably connected. A sealing plate 15 is installed on the outer periphery of the inner ring 16, which is connected to the inclined tube 19 and the lower dust cover 20. A housing 14 is installed on the outer side of the sealing plate 15. A fixing ring 17 is installed between the housing 14 and the inner ring 16. Multiple balls 18 are arranged in the middle of the fixing ring 17. The inner ring 16 and the housing 14 cooperate to form the bearing installation. The fixing ring 17 and the balls 18 form the rotating part of the bearing. By assembling them together, the bearing is obtained. The sealing plate 15 enables the bearing to achieve a sealing effect. A rubber ring 2 is installed in the middle of the upper dust cover 1. The rubber ring 2 initially blocks water vapor and dust, which facilitates the subsequent sealing components to further block water vapor and dust, so that the bearing assembly can operate stably.

[0035] Working principle: In use, first assemble the outer shell 14, fixing ring 17, ball bearing 18, and inner ring 16 to form two bearings. Then, install the sealing plate 15 on the assembled bearings to seal them. Next, place the sealed bearings at the upper and lower ends of the head tube, and install the lower dust cover 20 at the lower end of the head tube to fix the bearing at the lower end of the head tube. At this time, symmetrically install the upper sealing ring 6 and lower sealing ring 7 on the middle of the upper dust cover 1, and install the rubber ring 2 on the upper dust cover 1 near the opening. At the same time, place the slant tube 19 into the bearing, and then place the upper dust cover 1 on the top of the slant tube 19 and the bearing. Tighten the bolts to fix the bearing and slant tube 19 at the upper end of the head tube. Finally, install the bicycle handlebars on the head tube.

[0036] The rubber ring 2 provides an initial seal at the connection between the upper dust cover 1 and the handlebars, thus initially blocking dust and rainwater. When moisture and dust reach the annular block 3 and the guide groove 4 through the rubber ring 2, they are blocked. At the same time, the upper sealing ring 6 and the lower sealing ring 7 also block moisture and dust, preventing moisture and dust from contacting the bearing and extending its service life. Meanwhile, the blocked moisture and dust are discharged through the drain port 5, ensuring that moisture and dust are continuously blocked, thus providing protection for the bearing.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 bicycle handlebar steering bearing assembly with a waterproof seal, comprising an upper dust cover (1) and a lower dust cover (20), characterized in that: The bottom of the upper dust cover (1) is slidably connected to an inclined tube (19), and a notch is opened in the middle of the inclined tube (19). Rotating components are installed on the outer periphery of both the inclined tube (19) and the lower dust cover (20), and a sealing component is installed in the middle of the upper dust cover (1). The sealing assembly includes an upper sealing ring (6) and a lower sealing ring (7). The upper sealing ring (6) and the lower sealing ring (7) are symmetrically installed in the middle of the upper dust cover (1). A support plate (10) is fixedly connected inside the upper sealing ring (6) and the lower sealing ring (7). An annular helical spring (9) is provided in the middle of the upper sealing ring (6) and the lower sealing ring (7). An annular stop block (11) is fixedly connected to the outer side of the upper sealing ring (6) and the lower sealing ring (7). A blocking edge (12) is fixedly connected to the outer side of the upper sealing ring (6) and the lower sealing ring (7). An annular groove (8) is opened on the outer side of the upper sealing ring (6) and the lower sealing ring (7).

2. The bicycle handlebar steering bearing assembly with waterproof seal according to claim 1, characterized in that: An annular block (3) is fixedly connected to the middle of the upper dust cover (1), and a groove (13) is provided in the middle of the upper dust cover (1).

3. A bicycle handlebar steering bearing assembly with a waterproof seal according to claim 2, characterized in that: The upper dust cover (1) has a flow guide groove (4) in the middle, and the flow guide groove (4) is located at the bottom of the annular block (3).

4. A bicycle handlebar steering bearing assembly with a waterproof seal according to claim 1, characterized in that: The upper dust cover (1) has a drain outlet (5) in the middle, and the drain outlet (5) penetrates the upper dust cover (1).

5. A bicycle steering bearing assembly with a waterproof seal according to claim 1, characterized in that: The rotating assembly includes two inner rings (16), which are slidably connected to the outer periphery of the inclined tube (19) and the lower dust cover (20), respectively. A sealing plate (15) is installed on the outer periphery of the inner ring (16), and a shell (14) is installed on the outer side of the sealing plate (15).

6. A bicycle handlebar steering bearing assembly with a waterproof seal according to claim 5, characterized in that: A retaining ring (17) is installed between the outer shell (14) and the inner ring (16), and a plurality of balls (18) are provided in the middle of the retaining ring (17).

7. A bicycle handlebar steering bearing assembly with a waterproof seal according to claim 1, characterized in that: A rubber ring (2) is installed in the middle of the upper dust cover (1).

Images