Needle roller retainer structure

Abstract

The utility model provides a needle roller retainer structure which comprises a retainer and needle rollers arranged in the retainer, a plurality of cross beams and two connecting rings connected with the cross beams are arranged on the retainer, pockets used for storing the needle rollers are formed between the adjacent cross beams, a plurality of convex points are arranged on the outer diameter surfaces of the connecting rings of the two retainers, and the convex points are arranged on the outer diameter surfaces of the connecting rings of the retainers. The multiple protruding points are evenly distributed in the circumferential direction of the outer diameter face of the connecting ring, and the protruding points on the two sides are correspondingly arranged at the two axial ends of the retainer respectively, so that the situation that a cross beam of the retainer is directly impacted, and consequently the cross beam deforms and a roller pin falls off is avoided; by means of the arrangement of the two rows of protruding points, a small gap can be generated between the retainer and the inner wall of a small outer package, the rolling needles can be taken out more easily through the space supported by the protruding points, impact on other retainers caused by falling of the rolling needles in the transportation process is reduced, and the integrity and stability of the retainers in the transportation process are improved.

Description

Technical Field

[0001] The utility model relates to a needle roller retaining frame structure. Background Art

[0002] With the rapid development of the automobile industry, affected by the vehicle's endurance, torque and acceleration per 100 kilometers and the rapid increase in people's demand for use, automobile manufacturers have higher and higher requirements for engine efficiency and speed, and thus the speed, precision and transportation requirements of the bearings in the engine are also getting higher and higher. All bearing manufacturers are constantly developing and improving high-efficiency, high-speed needle roller cage assemblies to meet market demand.

[0003] During transportation, the cage is subjected to impact force, which can easily directly cause the impact force to impact the needle roller or the crossbeam on the cage, so that the cage pocket cannot lock the needle roller, causing the needle roller to easily fall into the gap between the packaging box and the needle roller. The space between the packaging and the outer diameter of the bearing is usually very small. If the needle roller falls due to impact, it is difficult to take it out. The cage is thick and the cage pocket is narrow and long, which can easily cause the roller to get stuck. Especially when different needle roller assemblies are transported together in large quantities, some needle rollers fall and easily roll over other cages, causing the needle rollers on other cages to fall off, resulting in several needle rollers mixed together and unable to distinguish needle rollers of different specifications, affecting the normal use of the bearing. At the same time, it causes a lot of waste of human and material resources and greatly reduces efficiency. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a needle roller retainer structure.

[0005] To achieve the above-mentioned purpose, the utility model provides a needle roller retainer structure, including a retainer and a needle roller arranged in the retainer, the retainer is provided with a plurality of cross beams and two connecting rings connecting the plurality of cross beams, pockets for storing the needle rollers are formed between adjacent cross beams, the outer diameter surfaces of the two retainer connecting rings are provided with a plurality of protrusions, the plurality of protrusions are evenly distributed along the circumference of the outer diameter surfaces of the connecting rings, and the protrusions on both sides are respectively correspondingly arranged at the axial ends of the retainer.

[0006] Furthermore, the protrusions are provided at the connection ring positions between adjacent beams.

[0007] Furthermore, the height of the protrusion in the radial direction is higher than the height of the needle roller installed in the pocket, and the end of the protrusion is a spherical surface.

[0008] Furthermore, an arc-shaped convex rib is provided on the side wall of the connecting ring located at the pocket hole position, the convex rib is matched with the outer wall of the needle roller, and the convex rib is arranged on the radially inward side of the pocket hole.

[0009] Furthermore, a groove is provided on the side wall of the connecting ring, and the groove is a V-shaped groove.

[0010] Furthermore, a radially outward side wall of the cross beam is provided with a weight-reducing groove penetrating along the axial direction.

[0011] The beneficial effect of the utility model is that by setting two rows of protrusions on the outer diameter surface of the retaining frame, the retaining frame and the outer packaging can be abutted through the protrusions during the transmission process. If the retaining frame encounters bumps or hits the outer packaging during transportation, the impact force can be guided to the protrusions abutting the outer packaging, thereby preventing direct impact on the crossbeam of the retaining frame, thereby causing the crossbeam to deform and cause the needle roller to fall, and preventing the needle roller from being stuck between the retaining frame and the inner wall of the outer packaging after falling. By setting two rows of protrusions, a small gap can be generated between the retaining frame and the inner wall of the smaller outer packaging, and the needle roller can be more easily removed through the space supported by the protrusions, thereby reducing the impact on other retaining frames caused by the needle roller falling during transportation, improving the integrity and stability of the retaining frame during transportation, improving the transportation effect, and making transportation more convenient and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0014] Figure 3 This is a schematic structural diagram of the side wall of the connecting ring of an embodiment of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the combined transportation of the retaining frame according to an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following is a further description of the embodiments of the utility model in conjunction with the accompanying drawings: as shown in the figure, the needle roller retainer structure includes a retainer 1 and a needle roller 2 arranged in the retainer 1, the retainer 1 body is provided with a plurality of beams 3 and two connecting rings 4 connecting the plurality of beams 3, pockets for storing the needle rollers 2 are formed between adjacent beams 3, the outer diameter surfaces of the two connecting rings 4 of the retainer 1 are provided with a plurality of protrusions 5, the plurality of protrusions 5 are uniformly distributed along the circumferential direction of the outer diameter surface of the connecting ring 4, and the protrusions 5 on both sides are respectively arranged at the axial ends of the retainer 1.

[0017] The convex point 5 is arranged at the connection ring 4 between adjacent cross beams 3. By arranging the convex point 5 on the side wall of the connection ring 4 between adjacent cross beams 3, two convex points 5 at both ends of the axial direction can be arranged corresponding to one needle roller 2, so that the convex point 5 can abut against the outer package instead of the needle roller 2 abutting against the outside, reducing the risk of the needle roller 2 being directly impacted, improving the integrity of the cage 1, and making the convex point 5 play the role of supporting it and creating a gap with the outer package.

[0018] The height of the convex point 5 in the radial direction is higher than the height of the needle roller 2 installed in the pocket, and the end of the convex point 5 is a spherical surface. By making the height of the convex point 5 in the radial direction higher than the height of the needle roller 2 installed in the pocket, a gap can be effectively formed between the retaining frame 1 and the outer packaging, thereby effectively preventing the impact force from directly colliding with the cross beam 3 or the needle roller 2, causing the needle roller 2 to detach or the cross beam 3 to deform. The spherical surface of the end of the convex point 5 can improve the hard friction of the retaining frame 1 during the abutment process, and can improve the stability of the retaining frame 1 during transportation, and prevent the outer packaging from being damaged and scratched, causing the retaining frame 1 to fall out.

[0019] The side wall of the connecting ring 4 at the pocket hole position is provided with an arcuate convex rib 6, the convex rib 6 is matched with the outer wall of the needle roller 2, and the convex rib 6 is arranged on the radially inward side of the pocket hole. Through the arrangement of the arcuate convex rib 6 on the connecting ring 4, the arcuate convex rib 6 can block the needle roller 2 from moving in the radially inward direction to prevent the needle roller 2 from escaping from the retainer 1, and the arcuate convex rib 6 can also play a role in positioning and installation. The radially outward side of the pocket hole can also be provided with an arcuate convex rib 6 to block the needle roller 2 from moving outward.

[0020] The side wall of the connecting ring 4 is also provided with a groove 7, which is a V-shaped groove. The V-shaped groove can realize the oil storage function, and the V-shaped groove can collect the lubricating oil into the groove, so that when the lubrication system is insufficient in oil supply or the lubrication system temporarily fails, it can still provide lubrication protection for the needle roller 2 for a period of time, prolong the service life of the needle roller 2, and improve the operation efficiency and reliability of the equipment.

[0021] The radially outward side wall of the cross beam 3 is provided with a weight-reducing groove 8 penetrating in the axial direction. The weight-reducing groove 7 can reduce the weight of the cage 1, lighten the load or improve energy efficiency.

[0022] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A needle roller cage structure, comprising a cage and a needle roller arranged in the cage, characterized in that: The retaining frame is provided with a plurality of cross beams and two connecting rings connecting the plurality of cross beams. Pockets for storing needle rollers are formed between adjacent cross beams. The outer diameter surfaces of the two retaining frame connecting rings are provided with a plurality of protrusions, and the plurality of protrusions are evenly distributed along the circumference of the outer diameter surfaces of the connecting rings. The protrusions on both sides are respectively arranged at the axial ends of the retaining frame, and the protrusions are arranged at the connecting ring positions between adjacent cross beams.

2. The needle roller cage structure according to claim 1, characterized in that: The height of the protrusion in the radial direction is higher than the height of the needle roller installed in the pocket, and the end of the protrusion is a spherical surface.

3. The needle roller cage structure according to claim 1 or 2, characterized in that: An arc-shaped convex rib is provided on the side wall of the connecting ring located at the pocket hole position, the convex rib is matched with the outer wall of the needle roller, and the convex rib is arranged on the radially inward side of the pocket hole.

4. The needle roller cage structure according to claim 1, characterized in that: A groove is also provided on the side wall of the connecting ring, and the groove is a V-shaped groove.

5. The needle roller cage structure according to claim 1, characterized in that: A radially outward side wall of the cross beam is provided with a weight-reducing groove penetrating along the axial direction.

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