Reinforced nylon retainer

Abstract

The reinforced nylon retainer comprises a retainer body, a plurality of retainer pockets used for bearing balls are evenly formed in the retainer body, a reinforcing rib is arranged between every two adjacent retainer pockets, and a reinforcing part is arranged on the side, away from the retainer pockets, of the retainer body. A plurality of slotted holes are uniformly formed in the reinforcing part, and each slotted hole is correspondingly formed between two adjacent cage pockets; the reinforcing ribs increase the inertia moment of the section of the cage pocket, effectively disperse the load transmitted by the balls and reduce local stress concentration of the cage pocket; a high-rigidity area is formed through local thickening, the strength and hardness of the retainer are improved, and the overall bending resistance of the retainer is enhanced; and meanwhile, the reinforcing part is further used as a bearing support part of the retainer to disperse the impact of the balls on the retainer.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing components, and in particular relates to a reinforced nylon retainer. Background Art

[0002] The cage is also called the bearing retainer, which refers to the bearing part that partially wraps all or part of the rolling elements and moves with them. It is mainly used to isolate the rolling elements, guide the rolling elements and keep them in the bearing. The cage is one of the main parts of the bearing. It effectively separates the rolling elements at equal distances and distributes them evenly on the circumference of the raceway to prevent the rolling elements from colliding and rubbing against each other during operation. In a separable bearing, the cage combines the rolling element and a ring together to prevent the rolling element from falling off.

[0003] The existing cage has some shortcomings during use: ① The traditional cage structure has the problem of insufficient strength and toughness; ② The existing cage is heavy and affects the high-speed operation performance; ③ The cage is prone to deformation and fracture under high-speed / ultra-high-speed conditions; ④ The conventional reinforcement structure cannot take into account both strength improvement and weight control. Therefore, it is necessary to design a reinforced nylon cage to solve the above problems. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a reinforced nylon retainer.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a reinforced nylon retainer, including a retainer body, on which a plurality of retainer pockets for accommodating balls are evenly arranged, a reinforcing rib is arranged between two adjacent retainer pockets, and a reinforcing portion is arranged on the retainer body on the side away from the retainer pockets, and a plurality of slots are evenly opened on the reinforcing portion, and each of the slots is correspondingly arranged between two adjacent retainer pockets.

[0006] Furthermore, a plurality of ball grooves for accommodating balls are evenly formed on one side of the retainer body away from the reinforcement portion, and a plurality of cantilevers adapted to the ball grooves and limiting the balls are axially arranged on the retainer body.

[0007] Furthermore, the cantilever comprises a first fork portion and a second fork portion; and a reinforcing rib is provided between the first fork portion and the second fork portion between two adjacent cantilevers.

[0008] Furthermore, the first fork portion and the second fork portion both include a limiting contact surface matched with the inner surface of the ball groove, and the limiting contact surfaces of the first fork portion and the second fork portion and the ball groove form a retainer pocket.

[0009] Further, both the first fork portion and the second fork portion include arc-shaped surfaces facing away from the limiting contact surface, and the reinforcing rib is connected between two adjacent arc-shaped surfaces.

[0010] Further, the first fork portion and the second fork portion extend axially to form a reinforcing section.

[0011] Further, a reinforcing portion is axially extended from a side of the cage body away from the cage pocket.

[0012] Further, the slot is disposed through the reinforcing portion along the radial direction of the cage body.

[0013] Further, the slot is arc-shaped.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The reinforcing rib increases the moment of inertia of the cage pocket cross-section, effectively disperses the load transmitted by the balls, and reduces the local stress concentration of the cage pocket.

[0016] 2. By locally thickening to form a high-stiffness region, the strength and hardness of the cage are increased, and the overall anti-bending ability of the cage is enhanced; meanwhile, the reinforcing portion further serves as a force-bearing support portion of the cage to disperse the impact force generated by the balls on it.

[0017] 3. A plurality of slots are uniformly formed in the reinforcing portion. The plurality of slots provided reduce the overall weight of the cage without affecting the overall strength and hardness of the cage. On the one hand, by removing redundant materials in non-critical regions, the overall mass of the cage is directly reduced; on the other hand, the overall centrifugal force load of the cage during high-speed rotation is reduced, ensuring the smooth operation of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present invention;

[0019] Figure 2 is a front view of the present invention;

[0020] Figure 3 is a top view of the present invention;

[0021] Figure 4 is Figure 3 a sectional view taken along A-A in

[0022] In the figure: 1, cage body; 2, cage pocket; 21, ball groove; 3, reinforcing rib; 4, reinforcing portion; 5, slot; 6, cantilever; 61, first fork portion; 62, second fork portion; 601, reinforcing section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figures 1-4 As shown, the technical solution adopted by the present invention is as follows: This embodiment provides a reinforced nylon retainer, including a retainer body 1, on which a plurality of retainer pockets 2 are evenly arranged, and the inner wall matching surface of the retainer pocket 2 is preferably spherical, so as to accurately accommodate the balls, ensuring that the balls maintain uniform spacing and relative positions when the bearing is running, and avoiding collision or extrusion with each other.

[0025] In this embodiment, a reinforcing rib 3 is provided between two adjacent cage pockets 2. The reinforcing rib 3 increases the cross-sectional inertia moment of the cage pocket 2, effectively disperses the load transmitted by the ball, and reduces the local stress concentration of the cage pocket 2. When the bearing rotates at high speed, the reinforcing rib 3 effectively suppresses the deformation of the cage pocket 2 caused by centrifugal force.

[0026] In this embodiment, a reinforcement part 4 is provided on the side of the retainer body 1 away from the retainer pocket 2. The reinforcement part 4 is thickened along the axial direction of the retainer body 1. The high rigidity area is formed by local thickening, thereby increasing the strength and hardness of the retainer and enhancing the overall bending resistance of the retainer. At the same time, the reinforcement part 4 further serves as a force-bearing support part of the retainer to disperse the impact force exerted on it by the ball. When the bearing is in high-speed operation, the defect of insufficient strength of the nylon material itself is compensated to ensure stable operation of the retainer. It should be added that since the retainer is made of nylon as a whole, the reinforcement part 4 improves the overall toughness of the retainer, further improving the retainer when the bearing moves at high speed, allowing moderate elastic deformation and suppressing plastic deformation.

[0027] In this embodiment, a plurality of slots 5 are evenly formed on the reinforcement part 4, and the plurality of slots 5 are provided to reduce the overall weight of the cage without affecting the overall strength and hardness of the cage. On the one hand, the overall weight of the cage is directly reduced by removing redundant materials in non-critical areas; on the other hand, the centrifugal force load of the cage as a whole is reduced during high-speed rotation, ensuring the stability of the bearing operation.

[0028] It should be noted that each slot 5 is correspondingly arranged between two adjacent cage pockets 2, and the evenly arranged slots 5 ensure the symmetry of mass distribution and the stability of the cage during high-speed operation.

[0029] It should be added that the strengthening portion 4 and a plurality of slots 5 cooperate with each other. The thickening area of the strengthening portion 4 is concentrated in the high stress area, that is, the position corresponding to the cage pocket 2, so as to enhance the overall load-bearing capacity of the cage; while the slots 5 are opened in the low stress area, that is, the middle of the cage body 1, so as to reduce the weight of the cage body 1 without sacrificing its strength.

[0030] In this embodiment, a plurality of ball grooves 21 for placing balls are evenly formed on the side of the cage body 1 away from the strengthening portion 4. A plurality of cantilevers 6 axially arranged on the cage body 1 are adapted to the ball grooves 21 and limit the balls. The cantilever 6 and the cage body 1 are integrally formed.

[0031] In this embodiment, the cantilever 6 includes a first fork portion 61 and a second fork portion 62; a reinforcing rib 3 is arranged between the first fork portion 61 and the second fork portion 62 of adjacent two cantilevers 6. The arranged reinforcing rib 3 improves the connection strength between the first fork portion 61 and the second fork portion 62 and the cage body 1, and effectively inhibits the deformation of the cage pocket 2 caused by centrifugal force.

[0032] In this embodiment, both the first fork portion 61 and the second fork portion 62 include a limiting contact surface adapted to the inner surface of the ball groove 21. The limiting contact surfaces of the first fork portion 61 and the second fork portion 62 and the ball groove 21 form the cage pocket 2.

[0033] In this embodiment, both the first fork portion 61 and the second fork portion 62 include an arc surface facing away from the limiting contact surface. The reinforcing rib 3 is connected between adjacent two arc surfaces.

[0034] In this embodiment, the first fork portion 61 and the second fork portion 62 extend along their axial directions to form a strengthening section 601, further improving the overall strength of the first fork portion 61 and the second fork portion 62.

[0035] In this embodiment, the slot 5 penetrates the strengthening portion 4 along the radial direction of the cage body 1, and the slot 5 is preferably arc-shaped.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An enhanced nylon cage, characterized in that: It includes a cage body (1), on which a number of cage pockets (2) for holding balls are evenly arranged, a reinforcing rib (3) is arranged between two adjacent cage pockets (2), a reinforcing portion (4) is arranged on a side of the cage body (1) facing away from the cage pockets (2), and a number of slot holes (5) are evenly formed in the reinforcing portion (4), and each slot hole (5) is correspondingly arranged between two adjacent cage pockets (2).

2. The enhanced nylon cage according to claim 1, wherein: A number of ball grooves (21) for placing balls are evenly formed on a side of the cage body (1) facing away from the reinforcing portion (4), and a number of cantilevers (6) that are axially arranged on the cage body (1) and are adapted to the ball grooves (21) to limit the balls are provided.

3. The reinforced nylon cage according to claim 2, characterized in that: The cantilever (6) includes a first fork portion (61) and a second fork portion (62); a reinforcing rib (3) is arranged between the first fork portion (61) and the second fork portion (62) of two adjacent cantilevers (6).

4. The enhanced nylon cage according to claim 3, wherein: Both the first fork portion (61) and the second fork portion (62) include a limiting contact surface adapted to the inner surface of the ball groove (21), and the limiting contact surfaces of the first fork portion (61) and the second fork portion (62) and the ball groove (21) form a cage pocket (2).

5. The enhanced nylon cage according to claim 4, wherein: Both the first fork portion (61) and the second fork portion (62) include an arc surface facing away from the limiting contact surface, and the reinforcing rib (3) is connected between two adjacent arc surfaces.

6. The reinforced nylon cage according to claim 3, wherein: The first fork portion (61) and the second fork portion (62) extend axially to form a reinforcing section (601).

7. The enhanced nylon cage according to claim 1, characterized in that: A reinforcing portion (4) axially extends on a side of the cage body (1) facing away from the cage pockets (2).

8. The reinforced nylon cage according to claim 1, wherein: The slot hole (5) axially penetrates the reinforcing portion (4) along the radial direction of the cage body (1).

9. The enhanced nylon cage according to claim 8, wherein: The slot hole (5) is arc-shaped.

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