Novel linear bearing

Abstract

The novel linear bearing comprises an outer ring, a retainer and balls, the retainer is installed in the outer ring, a first sealing ring is arranged in the outer ring, a first clamping groove is formed in the outer ring, the side edge of the first sealing ring is connected into the first clamping groove in a clamped mode, a second sealing ring is arranged in the outer ring, and a second clamping groove is formed in the outer ring. The retainer is fixed between the first sealing ring and the second sealing ring, a circulating groove is formed in the side surface of the retainer, the balls are installed in the circulating groove, a step is arranged on the side edge of the outer ring, and the diameter of the step is slightly smaller than that of the outer ring. The step part is inserted into a mounting hole or a mounting groove in a box-type sliding block or equipment, and then the whole outer ring enters, so that the mounting is convenient, the time is saved, the efficiency is improved, the performance is enhanced, the influence of external force is resisted, and the phenomena of outer ring deformation, overall looseness of the linear bearing and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of linear bearings, in particular to a novel linear bearing. Background Art

[0002] Linear bearings are a kind of linear motion system produced at low cost, used for unlimited stroke and cylindrical shaft. Since the bearing ball and the shaft are in point contact, the load is small, and the steel ball rotates with very small friction resistance, so that high-precision smooth motion can be obtained. Linear bearings are more and more widely used in electronic equipment, machinery, instruments, robots, tools, CNC machine tools, automobiles and digital three-dimensional coordinate measuring equipment and other precision equipment or special machinery industries. The specifications of linear bearings include LM and LME, LIN-11 and LIN-12 and KH series. Among them, KH series stamped linear bearings have the characteristics of less space required, no maintenance and low design cost. However, the outer ring of KH series stamped linear bearings is thinner, and multiple steel ball rolling grooves extend to the outer ring surface. The outer ring is less stressed and easy to deform. There is a loose phenomenon when installed on the equipment. In addition, the installation of both ends of KH series stamped linear bearings is easily blocked, which is time-consuming and inconvenient to operate. Utility Model Content

[0003] The utility model aims to solve the problems existing in the above-mentioned prior art and provide a novel linear bearing which can be easily installed, save time and improve efficiency, enhance performance and resist external forces, and avoid deformation of the outer ring and overall loosening of the linear bearing.

[0004] The utility model adopts a technical solution to solve its technical problems: this novel linear bearing comprises an outer ring, a retaining frame and a ball, the retaining frame is installed inside the outer ring, a first sealing ring is arranged inside the outer ring, a first slot is opened inside the outer ring, the side of the first sealing ring is clamped into the first slot, a second sealing ring is arranged inside the outer ring, a second slot is opened inside the outer ring, the side of the second sealing ring is clamped into the second slot, the retaining frame is fixed between the first sealing ring and the second sealing ring, a circulation groove is arranged on the side surface of the retaining frame, the ball is arranged and installed inside the circulation groove, there are multiple circulation grooves, each circulation groove has multiple balls, and the side of the outer ring is arranged There is a step, and the diameter of the step is slightly smaller than the diameter of the outer ring. When the linear bearing is installed on a box-type slider or device, the linear bearing uses the step part as the front end, and the step part is plugged into the mounting hole or mounting groove on the box-type slider or device. The diameter of the step is slightly smaller, which is convenient for entry, and then the entire outer ring enters, and then the linear bearing is fixed as a whole to achieve the installation of the linear bearing as a whole, and then the optical axis is installed. The optical axis passes through the inside of the linear bearing, and the ball contacts the side surface of the optical axis, which is convenient for installation, saves time, improves efficiency, enhances performance, resists external forces, and avoids deformation of the outer ring and overall loosening of the linear bearing.

[0005] For further improvement, the side surface of the step is frosted, and the side surface of the outer ring is polished. The polishing of the outer ring improves the overall performance and accuracy of the linear bearing, while improving the aesthetics.

[0006] To be further improved, a rubber layer is fixedly connected to the surface of the first sealing ring, and a convex ring is fixedly connected to the side of the rubber layer. The rubber layer effectively protects the surface of the first sealing ring. At the same time, the surface of the rubber layer is convenient for printing and labeling to show product model specifications and other information. The convex ring improves the cleanliness level during the operation of the linear bearing.

[0007] To further improve, the adhesive layer is made of rubber, and the second sealing ring is also connected to the adhesive layer. The adhesive layer effectively protects the second sealing ring. Rubber is a common material and is easy to obtain and process.

[0008] For further improvement, the side of the step is provided with a first cutting angle, and the side of the outer ring is provided with a second cutting angle. The first cutting angle and the second cutting angle reduce sharp edges, improve safety and reduce contact injuries. The first cutting angle facilitates the installation and alignment of the linear bearing, reduces operation time and improves efficiency.

[0009] Further improvement, the second cut corner and the first cut corner have the same cut angle, the first cut corner is frosted, and the surface texture of the first cut corner is the same as the surface texture of the step, achieving unification and reducing differences.

[0010] The beneficial effects of the utility model are:

[0011] 1. When the linear bearing is installed on a box-type slider or device, the linear bearing uses the step part as the front end, and the step part is plugged into the mounting hole or mounting groove on the box-type slider or device. The diameter of the step is slightly smaller, which is convenient for entry. Then the outer ring as a whole is inserted, and then the linear bearing as a whole is fixed to achieve the installation of the linear bearing as a whole. Then the optical axis is installed. The optical axis passes through the inside of the linear bearing, and the ball contacts the side surface of the optical axis, which is convenient for installation, saves time and improves efficiency. The performance is enhanced to resist the influence of external forces, avoid deformation of the outer ring and overall loosening of the linear bearing, etc.

[0012] 2. The first and second chamfers can reduce sharp edges, improve safety and reduce contact injuries. The first chamfer facilitates the installation and alignment of the linear bearing, reduces operation time and improves efficiency. The surface texture of the first chamfer is the same as that of the step surface, achieving unification and reducing differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 It is a front view of the structure of the utility model;

[0016] Figure 4 This is a diagram showing the interior of the outer ring of the utility model;

[0017] Figure 5 For the utility model Figure 4 Enlarged view of point B in the middle;

[0018] Figure 6 For the utility model Figure 4 Enlarged view of point C in the middle;

[0019] Figure 7 This is a schematic diagram of the structure of the KH series stamped linear bearings.

[0020] Explanation of the reference numerals: 1. outer ring; 2. retaining frame; 3. ball; 4. first sealing ring; 5. first retaining groove; 6. second sealing ring; 7. second retaining groove; 8. circulation groove; 9. step; 10. rubber layer; 11. convex ring; 12. first cut angle; 13. second cut angle. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-6 This embodiment is further described:

[0022] like Figure 1-6 As shown: In this embodiment, a new type of linear bearing includes an outer ring 1, a retaining frame 2 and a ball 3. The retaining frame 2 is installed inside the outer ring 1. A first sealing ring 4 is arranged inside the outer ring 1. A first groove 5 is opened inside the outer ring 1. The side of the first sealing ring 4 is clamped into the first groove 5. A second sealing ring 6 is arranged inside the outer ring 1. A second groove 7 is opened inside the outer ring 1. The side of the second sealing ring 6 is clamped into the second groove 7. The retaining frame 2 is fixed between the first sealing ring 4 and the second sealing ring 6. A circulation groove 8 is arranged on the side surface of the retaining frame 2. The ball 3 is arranged and installed in the circulation groove 8. There are multiple circulation grooves 8, and each circulation groove 8 has multiple balls 3. A step 9 is arranged on the side of the outer ring 1. The diameter of the step 9 is slightly smaller than the diameter of the outer ring 1. The side surface of the step 9 is frosted, and the side surface of the outer ring 1 is polished. The surface of the first sealing ring 4 is fixedly connected with a rubber layer 10, and the side of the rubber layer 10 is fixedly connected with a convex ring 11. The rubber layer 10 is made of rubber, and the second sealing ring 6 is also connected to the rubber layer 10.

[0023] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown: a first cut corner 12 is provided on the side of the step 9, a second cut corner 13 is provided on the side of the outer ring 1, the second cut corner 13 and the first cut corner 12 have the same cutting angle, and the first cut corner 12 is frosted.

[0024] When the utility model is in use: when the linear bearing is installed on a box-type slider or device, the linear bearing uses the step 9 part as the front end, and the step 9 part is plugged into the mounting hole or mounting groove on the box-type slider or device. The first cut angle 12 and the second cut angle 13 reduce sharp edges, improve safety and reduce contact damage. The first cut angle 12 facilitates the installation and alignment of the linear bearing, reduces operation time and improves efficiency. The diameter of the step 9 is slightly smaller, which is convenient for entry. Then the outer ring 1 as a whole enters, and then the linear bearing as a whole is fixed to achieve the installation of the linear bearing as a whole, and then the optical axis is installed. The optical axis passes through the interior of the linear bearing, and the ball 3 contacts the side surface of the optical axis, which is convenient for installation, saves time and improves efficiency. The performance is enhanced to resist the influence of external forces, avoid deformation of the outer ring and overall loosening of the linear bearing, and the rubber layer 10 effectively protects the surfaces of the first sealing ring 4 and the second sealing ring 6, and the convex ring 11 improves the cleanliness of the linear bearing during operation.

[0025] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A novel linear bearing, comprising an outer ring (1), a retaining frame (2) and a ball (3), characterized in that: The retaining frame (2) is installed inside the outer ring (1), a first sealing ring (4) is arranged inside the outer ring (1), a first clamping groove (5) is opened inside the outer ring (1), the side of the first sealing ring (4) is clamped into the first clamping groove (5), a second sealing ring (6) is arranged inside the outer ring (1), a second clamping groove (7) is opened inside the outer ring (1), the side of the second sealing ring (6) is clamped into the second clamping groove (7), the retaining frame (2) is fixed between the first sealing ring (4) and the second sealing ring (6), a circulation groove (8) is arranged on the side surface of the retaining frame (2), the ball (3) is arranged and installed inside the circulation groove (8), there are a plurality of circulation grooves (8), and each circulation groove (8) has a plurality of ball (3), and a step (9) is arranged on the side of the outer ring (1), and the diameter of the step (9) is slightly smaller than the diameter of the outer ring (1).

2. A novel linear bearing according to claim 1, characterized in that: The side surface of the step (9) is subjected to frosting treatment, and the side surface of the outer ring (1) is subjected to polishing treatment.

3. A novel linear bearing according to claim 1, characterized in that: A rubber layer (10) is fixedly connected to the surface of the first sealing ring (4), and a convex ring (11) is fixedly connected to the side of the rubber layer (10).

4. A novel linear bearing according to claim 3, characterized in that: The adhesive layer (10) is made of rubber material, and the second sealing ring (6) is also connected to the adhesive layer (10).

5. The novel linear bearing according to claim 1 is characterized in that: The side edge of the step (9) is provided with a first cut angle (12), and the side edge of the outer ring (1) is provided with a second cut angle (13).

6. A novel linear bearing according to claim 5, characterized in that: The second cut corner (13) and the first cut corner (12) have the same cut angle, and the first cut corner (12) is frosted.

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