Nylon retainer for ball bearing

Abstract

The utility model discloses a nylon retainer for a ball bearing, which comprises a first retainer body and a second retainer body, the first retainer body comprises a plurality of first spacing parts and a plurality of first buckling parts which are arranged at equal intervals along the circumferential direction of the first retainer body, and the plurality of first spacing parts and the plurality of first buckling parts are arranged at intervals one by one; a first pocket part is formed by the adjacent first spacing part and the first buckling part; the first frame body and the second frame body replace a traditional integrated polymer clamping jaw type retainer, even if the bearing is in a high-rotating-speed scene, the first frame body and the second frame body are tightly clamped and matched, the balls still stably rotate in pockets of the original retainer, and dynamic balance of the ball bearing is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of cage technology and relates to a nylon cage for ball bearings. Background Technology

[0002] Deep groove ball bearings are widely used in various fields. Common deep groove ball bearing cages are often riveted corrugated steel cages or one-piece polymer claw cages. For nylon cages, the traditional form is often a one-piece polymer claw cage. In high-speed applications, one-piece polymer claw cages suffer from an umbrella effect.

[0003] In high-speed applications, the claws of traditional one-piece polymer claw cages tend to expand outward under centrifugal force, disrupting the original fit between the cage pocket and the balls, and even causing the balls to detach from the cage pocket, ultimately affecting the dynamic balance of the ball bearing.

[0004] To address the aforementioned problems, this utility model proposes a nylon cage for ball bearings. Utility Model Content

[0005] To address the problems existing in the background art, this utility model proposes a nylon cage for ball bearings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a nylon retainer for ball bearings, comprising a first frame, including a plurality of first spacers and a plurality of first fastening portions arranged equidistantly along its circumference, wherein the plurality of first spacers and the plurality of first fastening portions are arranged alternately; adjacent first spacers and first fastening portions form a first pocket portion.

[0007] The second frame includes a plurality of second spacers and a plurality of second fastening portions arranged equidistantly along its circumference, wherein the plurality of second spacers and the plurality of second fastening portions are arranged alternately; adjacent second spacers and second fastening portions form a second pocket portion.

[0008] The first gap portion is adapted to the second fastening portion, and the second gap portion is adapted to the first fastening portion; when the first frame and the second frame form a retainer, the first pocket portion and the corresponding second pocket portion form a retainer pocket.

[0009] Furthermore, the axial length of the first gap portion is greater than the axial length of the first fastening portion; the axial length of the first gap portion is the same as the axial length of the second gap portion, and the axial length of the first fastening portion is the same as the axial length of the second gap portion.

[0010] Furthermore, both the first and second interval portions are provided with hook segments along their axial direction; the hook segments of the first interval portion are adapted to the second fastening portion to form a fastening structure; the hook segments of the second interval portion are adapted to the first fastening portion to form a fastening structure.

[0011] Furthermore, the first engaging portion and / or radially extending along its outer side wall are provided with a clearance notch adapted to the hook segment.

[0012] Furthermore, both the first spacer and the second spacer are provided with limiting segments along their axial direction; the limiting segment of the first spacer is adapted to the second fastening part to form a limiting structure; the limiting segment of the second spacer is adapted to the second fastening part to form a limiting structure.

[0013] Furthermore, the first fastening part and / or the radial opening along its inner sidewall is provided with a limiting notch adapted to the limiting segment.

[0014] Furthermore, the first frame and / or the second frame are provided with slots on the side opposite to the first or second interval.

[0015] Furthermore, the first frame and / or the second frame are provided with assembly holes on the side opposite to the first or second fastening part.

[0016] Compared with the prior art, the present invention has the following advantages: In the present invention, the first frame and the second frame replace the traditional integrated polymer claw type cage. Even when the bearing is in a high-speed scenario, the first frame and the second frame are tightly clamped together, and the balls still rotate smoothly in the original cage pocket, ensuring the dynamic balance of the ball bearing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cooperation between the first frame and the second frame in this utility model;

[0018] Figure 2 This is a perspective view of the present invention;

[0019] Figure 3 This is the front view of this utility model.

[0020] In the figure: 1. First frame; 101. First interval; 102. First fastening part; 103. First pocket part; 2. Second frame; 201. Second interval; 202. Second fastening part; 203. Second pocket part; 3. Retainer pocket; 4. Hook section; 5. Clearance notch; 6. Limiting section; 7. Limiting notch; 8. Slot; 9. Assembly hole. Detailed Implementation

[0021] 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.

[0022] like Figures 1-3 As shown, the technical solution adopted by this utility model is as follows: A nylon cage for ball bearings includes a first cage 1 and a second cage 2. When the first cage 1 and the second cage 2 are in an assembled state, they form a nylon cage. The first cage 1 and the second cage 2 replace the traditional integrated polymer claw type cage. Even when the bearing is in a high-speed scenario, the first cage 1 and the second cage 2 are tightly clamped together, and the balls still rotate smoothly in the original cage pocket 3, ensuring the dynamic balance of the ball bearing.

[0023] In this embodiment, the first frame 1 includes a plurality of first interval portions 101 and a plurality of first fastening portions 102 arranged equidistantly along its circumference. The plurality of first interval portions 101 and the plurality of first fastening portions 102 are arranged alternately. A first pocket portion 103 is formed between adjacent first interval portions 101 and first fastening portions 102.

[0024] In this embodiment, the second frame 2 includes a plurality of second interval portions 201 and a plurality of second fastening portions 202 arranged equidistantly along its circumference. The plurality of second interval portions 201 and the plurality of second fastening portions 202 are arranged at intervals. A second pocket portion 203 is formed between adjacent second interval portions 201 and second fastening portions 202.

[0025] In this embodiment, the first spacer 101 is adapted to the second fastening part 202, and the second spacer 201 is adapted to the first fastening part 102; after the first frame 1 and the second frame 2 form a retainer, the first pocket part 103 and the corresponding second pocket part 203 form a retainer pocket 3, which is used to carry the ball.

[0026] In this embodiment, the axial length of the first spacer 101 is greater than the axial length of the first fastening part 102; the axial length of the first spacer 101 is consistent with the axial length of the second spacer 201; and the axial length of the first fastening part 102 is consistent with the axial length of the second spacer 201. The first frame 1 and the second frame 2 can be tightly installed.

[0027] In this embodiment, both the first spacer 101 and the second spacer 201 are integrally formed with hook segments 4 along their axial direction. The hook segments 4 of the first spacer 101 are adapted to the second fastening portion 202 to form a fastening structure; the hook segments 4 of the second spacer 201 are adapted to the first fastening portion 102 to form a fastening structure. When the first frame 1 and the second frame 2 are installed, the hook segments 4 of the first spacer 101 extend toward the corresponding second fastening portion 202, and the hook segments 4 engage with the second fastening portion 202; at the same time, the hook segments 4 of the second spacer 201 extend toward the corresponding first fastening portion 102, and the hook segments 4 engage with the first fastening portion 102. These actions cooperate to form a double fastening state, improving the strength and rotational accuracy of the cage.

[0028] In this embodiment, the first fastening part 102 and / or the radial opening along its outer side wall is provided with an avoidance notch 5 that is adapted to the hook section 4.

[0029] In this embodiment, both the first spacer 101 and the second spacer 201 are integrally formed with limiting segments 6 along their axial directions. The limiting segment 6 of the first spacer 101 is adapted to the second fastening part 202 to form a limiting structure; the limiting segment 6 of the second spacer 201 is adapted to the second fastening part 202 to form a limiting structure. When the first frame 1 and the second frame 2 are engaged with the corresponding fastening part by the hook segment 4, the limiting segment 6 again limits the first frame 1 and the second frame 2 radially and circumferentially to prevent relative movement between the first frame 1 and the second frame 2, ensuring the stability of the frame during rotation.

[0030] In this embodiment, the first fastening part 102 and / or the radial opening along its inner sidewall is provided with a limiting notch 7 that is adapted to the limiting section 6.

[0031] In this embodiment, the first frame 1 and / or the second frame 2 are provided with slots 8 on the side opposite to the first interval 101 or the second interval 201.

[0032] In this embodiment, the first frame 1 and / or the second frame 2 are provided with assembly holes 9 on the side opposite to the first fastening part 102 or the second fastening part 202.

[0033] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A nylon retainer for a ball bearing, characterized by, include: The first frame (1) includes a plurality of first interval portions (101) and a plurality of first fastening portions (102) arranged equidistantly along its circumference. The plurality of first interval portions (101) and the plurality of first fastening portions (102) are arranged alternately. Adjacent first interval portions (101) and first fastening portions (102) form a first pocket portion (103). The second frame (2) includes a plurality of second spacers (201) and a plurality of second fastening parts (202) arranged equidistantly along its circumference. The plurality of second spacers (201) and the plurality of second fastening parts (202) are arranged alternately. Adjacent second spacers (201) and second fastening parts (202) form second pockets (203). The first spacer (101) is adapted to the second fastening part (202), and the second spacer (201) is adapted to the first fastening part (102); when the first frame (1) and the second frame (2) form a retainer, the first pocket part (103) and the corresponding second pocket part (203) form a retainer pocket (3).

2. The nylon retainer for a ball bearing according to claim 1, characterized by: The axial length of the first interval (101) is greater than the axial length of the first fastening part (102); the axial length of the first interval (101) is the same as the axial length of the second interval (201), and the axial length of the first fastening part (102) is the same as the axial length of the second interval (201).

3. The nylon retainer for a ball bearing according to claim 2, characterized by: Both the first spacer (101) and the second spacer (201) are provided with hook segments (4) along their axial direction; the hook segments (4) of the first spacer (101) are adapted to the second fastening part (202) to form a fastening structure; the hook segments (4) of the second spacer (201) are adapted to the first fastening part (102) to form a fastening structure.

4. The nylon retainer for a ball bearing according to claim 3, characterized by: The first fastening part (102) and / or the radial opening along its outer side wall is provided with a clearance notch (5) that is adapted to the hook section (4).

5. The nylon retainer for a ball bearing according to claim 3, characterized by: Both the first spacer (101) and the second spacer (201) are provided with limiting segments (6) along their axial direction; the limiting segment (6) of the first spacer (101) is adapted to the second fastening part (202) to form a limiting structure; the limiting segment (6) of the second spacer (201) is adapted to the second fastening part (202) to form a limiting structure.

6. The nylon retainer for a ball bearing according to claim 5, characterized by: The first fastening part (102) and / or the limiting notch (7) adapted to the limiting section (6) is radially opened along its inner sidewall.

7. The nylon retainer for a ball bearing according to claim 1, characterized by: The first frame (1) and / or the second frame (2) have slots (8) on the side away from the first interval (101) or the second interval (201).

8. The nylon retainer for a ball bearing according to claim 1, characterized by: The first frame (1) and / or the second frame (2) have an assembly hole (9) on the side opposite to the first fastening part (102) or the second fastening part (202).

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