High-stability ball bushing structure

Abstract

The utility model discloses a high-stability ball bushing structure, and belongs to the technical field of ball bushings. An inner ring bush is installed inside the outer ring bush, a retainer is installed on the inner wall of the inner ring bush, balls are arranged on the retainer in a rolling mode, concave strip grooves are formed in the two ends of the outer ring bush and the two ends of the inner ring bush, sealing ring assemblies are connected to the concave strip grooves in a clamped mode, each sealing ring assembly comprises an installation ring, and a first lip edge is arranged on one side of each installation ring. A second lip edge is arranged on one side of the first lip edge. The concave strip groove is matched with the sealing ring assembly, the high-temperature-resistant and corrosion-resistant characteristics are achieved through the double-lip sealing ring assembly, the arc-shaped first lip edge and the inclined second lip edge form a multi-stage dynamic sealing barrier, impurities are effectively prevented from invading, and rapid installation and replacement are achieved through the interference clamping design of the concave strip groove and the sealing ring assembly. And meanwhile, the double-lip geometrical shape optimizes contact stress distribution, reduces abrasion and prolongs the service life of the bushing.

Description

Technical Field

[0001] This utility model relates to the field of ball bushing technology, specifically to a highly stable ball bushing structure. Background Technology

[0002] As a core component in mechanical transmission systems, ball bushings directly affect the precision and stability of equipment. Traditional ball bushings often use a single material matrix and a structure with uniformly arranged steel balls.

[0003] Existing ball bushing seals mostly use single-lip or flat seal designs, which are prone to lubricant leakage and impurity intrusion due to wear. Moreover, the installation method relies on adhesive or bolt fixing, making maintenance and replacement complicated and easily damaging to the structure. Utility Model Content

[0004] The purpose of this invention is to provide a highly stable ball bushing structure. Through the cooperation of the groove and the sealing ring assembly, and the double-lip sealing ring assembly, high temperature and corrosion resistance are achieved. The arc-shaped first lip and the inclined second lip form a multi-level dynamic sealing barrier, which effectively prevents impurities from entering.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a highly stable ball bushing structure, including an outer ring bushing, an inner ring bushing installed inside the outer ring bushing, a retainer installed on the inner wall of the inner ring bushing, and balls rolling on the retainer. Both ends of the outer ring bushing and the inner ring bushing are provided with recessed grooves, and a sealing ring assembly is engaged on the recessed grooves. The sealing ring assembly includes a mounting ring, a first lip is provided on one side of the mounting ring, and a second lip is provided on one side of the first lip.

[0007] Furthermore, both the outer and inner ring bushings are cylindrical with openings at both ends, and the outer wall of the inner ring bushing is set against the inner wall of the outer ring bushing.

[0008] Furthermore, the cage is arranged in a ring shape on the inner wall of the inner ring bushing, and the balls are rolled on the inner ring bushing through the cage.

[0009] Furthermore, the grooves at both ends of the outer and inner ring bushings are arranged in a concentric ring shape, and the mounting ring is connected to one end of the inner ring bushing through the grooves. The outer side of the first lip is abutted against one end of the outer ring bushing.

[0010] Furthermore, there are two sealing ring assemblies. The first lip has an arc-shaped cross-section, the second lip is inclined on the side closer to the first lip, and the side of the second lip away from the first lip is flat.

[0011] This utility model has the following beneficial effects:

[0012] This invention utilizes a combination of a recessed groove and a sealing ring assembly, and achieves high-temperature and corrosion resistance through a double-lip sealing ring assembly. The arc-shaped first lip and the inclined second lip form a multi-level dynamic sealing barrier, effectively preventing impurities from entering. The interference fit design between the recessed groove and the sealing ring assembly enables quick installation and replacement. At the same time, the optimized contact stress distribution of the double-lip geometry reduces wear and extends the service life of the bushing.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the ball bushing structure.

[0015] Figure 2 This is a schematic diagram of the internal structure of a ball bushing.

[0016] Figure 3 A schematic diagram of the structure of the outer ring bushing, inner ring bushing, cage, balls, and groove;

[0017] Figure 4 This is a schematic diagram of the sealing ring assembly.

[0018] In the figure: 1. Outer ring bushing; 2. Inner ring bushing; 3. Cage; 4. Ball; 5. Groove; 6. Sealing ring assembly; 601. Mounting ring; 602. First lip; 603. Second lip. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This utility model provides a technical solution: a highly stable ball bushing structure, including an outer ring bushing 1, an inner ring bushing 2 installed inside the outer ring bushing 1, both the outer ring bushing 1 and the inner ring bushing 2 being cylindrical with open ends, the outer wall of the inner ring bushing 2 abutting against the inner wall of the outer ring bushing 1, a retainer 3 installed on the inner wall of the inner ring bushing 2, and balls 4 rollingly disposed on the retainer 3, the retainer 3 being arranged in a ring shape on the inner wall of the inner ring bushing 2, the balls 4 being... Guided by the cage 3, the outer ring bushing 1 and the inner ring bushing 2 roll on the inner ring bushing 2. Both ends of the outer ring bushing 1 and the inner ring bushing 2 are provided with recessed grooves 5. The recessed grooves 5 and the sealing ring assembly 6 are engaged by an interference fit. The sealing ring assembly 6 is engaged on the recessed grooves 5. The recessed grooves 5 at both ends of the outer ring bushing 1 and the inner ring bushing 2 are arranged in a concentric ring shape. The mounting ring 601 is connected to one end of the inner ring bushing 2 through the recessed grooves 5. The outer side of the first lip 602 abuts against the outer ring bushing 1. At one end, its outer side is in close contact with the inner wall of the outer ring bushing 1 to form the main sealing surface. The sealing ring assembly 6 includes a mounting ring 601. A first lip 602 is provided on one side of the mounting ring 601, and a second lip 603 is provided on one side of the first lip 602. The first lip 602 and the second lip 603 are both made of PTFE-coated fluororubber. There are two sealing ring assemblies 6. The first lip 602 has an arc-shaped cross-section, which enhances the elastic deformation capability of the sealing ring assembly 6. The side of the second lip 603 close to the first lip 602 is inclined, and the side of the second lip 603 away from the first lip 602 is flat. The double lip structure forms a multi-level sealing barrier, which effectively prevents external impurities from entering. The groove 5 and the sealing ring assembly 6 are engaged to achieve quick installation and replacement. At the same time, the geometry of the double lips is used to optimize the contact stress distribution, which improves the sealing performance and wear resistance of the ball bushing.

[0021] When the ball bushing is working, the inner ring bushing 2 rotates or reciprocates within the outer ring bushing 1. The cage 3 guides the balls 4 to roll on the inner wall of the inner ring bushing 2, forming a low-friction transmission. The sealing ring assembly 6 is snapped onto both ends by the groove 5. The mounting ring 601 is fixed to the inner ring bushing 2. The outer side of the arc-shaped first lip 602 is in close contact with the inner wall of the outer ring bushing 1 to form the main seal. The inclined second lip 603 cooperates with the planar structure to form a multi-level sealing barrier, dynamically compensating for wear and blocking the intrusion of impurities. By optimizing the contact stress distribution through the double lip geometry, efficient sealing and long-term protection are achieved.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A highly stable ball bushing structure, comprising an outer ring bushing (1), characterized in that: The outer ring bushing (1) is equipped with an inner ring bushing (2). The inner wall of the inner ring bushing (2) is equipped with a retainer (3). A ball bearing (4) is rolled on the retainer (3). Both ends of the outer ring bushing (1) and the inner ring bushing (2) are provided with recessed grooves (5). A sealing ring assembly (6) is engaged on the recessed groove (5). The sealing ring assembly (6) includes a mounting ring (601). A first lip (602) is provided on one side of the mounting ring (601), and a second lip (603) is provided on one side of the first lip (602).

2. The highly stable ball bushing structure according to claim 1, characterized in that, Both the outer ring bushing (1) and the inner ring bushing (2) are cylindrical with openings at both ends, and the outer wall of the inner ring bushing (2) is abutted against the inner wall of the outer ring bushing (1).

3. The highly stable ball bushing structure according to claim 1, characterized in that, The retainer (3) is arranged in a ring on the inner wall of the inner ring bushing (2), and the ball (4) is rolled on the inner ring bushing (2) through the retainer (3).

4. The highly stable ball bushing structure according to claim 1, characterized in that, The grooves (5) at both ends of the outer ring bushing (1) and the inner ring bushing (2) are arranged in a concentric ring shape. The mounting ring (601) is connected to one end of the inner ring bushing (2) through the grooves (5). The outer side of the first lip (602) is abutted against one end of the outer ring bushing (1).

5. The highly stable ball bushing structure according to claim 4, characterized in that, The number of sealing ring assemblies (6) is two. The first lip (602) has an arc-shaped cross-section. The second lip (603) is inclined on the side closer to the first lip (602) and flat on the side away from the first lip (602).

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