A plastic injection molded cage for a tapered roller bearing and a bearing

Abstract

The utility model relates to bearing retainer technical field, concretely is a kind of tapered roller bearing injection retainer and bearing, including big end diameter ring, small end diameter ring, crossbeam, outer limit block, inner limit block;The crossbeam is provided with several;Several The crossbeam is arranged between the big end diameter ring with the small end diameter ring;Formed pocket between adjacent two crossbeams, the conical roller is installed in the pocket;The crossbeam is provided with the through-hole that is connected along circumferential direction;Outer limit block, it is set up on the outer surface of the crossbeam, first limit block is connected with the big end diameter ring;Second limit block is close to the small end diameter ring.It is contacted with the alternate arrangement form to outer, inner limit block and roller portion, does not influence assembly simultaneously, and the stability of roller in outer, inner limit block cooperation is guaranteed, and the structure design of three pockets is a group, also avoids the problem that overall retainer mould is too big, difficult to open mould, high cost.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, specifically to a tapered roller bearing injection molded cage and bearing. Background Technology

[0002] Traditional tapered roller bearing cages are typically stamped cages made of metal. During actual bearing operation, the metal cage comes into contact with the rollers. Due to the difficulty in controlling the dimensions of the stamping process, the dimensional accuracy of the cage is insufficient, inevitably leading to wear on the roller surface and affecting roller performance. Furthermore, common injection-molded cage structures either provide insufficient stability to the rollers or excessively enclose them, reducing lubrication efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides a tapered roller bearing injection molded cage and bearing. The outer and inner limiting blocks are arranged alternately with the rollers, which does not affect the assembly. At the same time, the outer and inner limiting blocks cooperate to ensure the stability of the rollers. The structural design of three pockets as a group also avoids the problems of the overall cage mold being too large, difficult to open and costly.

[0004] To achieve the above objectives, the present invention provides a tapered roller bearing injection-molded cage, comprising a large end diameter ring, a small end diameter ring, a crossbeam, an outer limiting block, and an inner limiting block; the crossbeam is provided with a plurality of crossbeams; the plurality of crossbeams are disposed between the large end diameter ring and the small end diameter ring; a pocket is formed between two adjacent crossbeams, and tapered rollers are installed in the pocket; the crossbeam is provided with a through hole communicating along the circumferential direction; the outer limiting block includes a first limiting block and a second limiting block, both disposed on the outer surface of the crossbeam, the first limiting block being connected to the large end diameter ring; the second limiting block is close to the small end diameter ring; the first limiting block and the second limiting block are arranged in an alternating manner; the inner limiting block includes a third limiting block and a fourth limiting block, both disposed on the inner surface of the crossbeam, the third limiting block being close to the large end diameter ring; the fourth limiting block being close to the small end diameter ring; the third limiting block and the fourth limiting block are arranged in an alternating manner.

[0005] Furthermore, the outer limiting block is a trapezoidal block structure; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces.

[0006] Furthermore, the inner limiting block is a trapezoidal block structure; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces.

[0007] Furthermore, the opening of the through hole abuts against the circumferential surface of the roller to cover the opening of the through hole.

[0008] Furthermore, grease is injected into the through hole for lubrication of the roller's circumferential surface.

[0009] Furthermore, the through hole is a rectangular hole.

[0010] Furthermore, the large end diameter ring, the small end diameter ring, the crossbeam, the outer limiting block, and the inner limiting block are integrally molded injection structures.

[0011] A bearing employing the aforementioned tapered roller bearing injection-molded cage.

[0012] The beneficial effects of this utility model are as follows: the outer and inner limiting blocks are arranged alternately with the rollers, which does not affect the assembly. At the same time, the outer and inner limiting blocks cooperate to ensure the stability of the rollers. The structure design of three pockets as a group also avoids the problems of the overall cage mold being too large, difficult to open and costly. Attached Figure Description

[0013] Figure 1 This is a partial structural diagram of the retainer of this utility model; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Rear view; Figure 4 for Figure 1 Top view; Figure 5 for Figure 1 A bottom view; Figure 6 for Figure 1 The left view; Figure 7 for Figure 1 The right view; Figure 8 This is a schematic diagram of the trapezoidal block structure of this utility model; In the diagram: 100, large end diameter ring, 200. Small end diameter ring, 300, crossbeam; 310, pocket; 320, through hole. 400, outer limit block; 410, first limit block; 420, second limit block. 500, Inner Limit Block; 510, Third Limit Block; 520, Fourth Limit Block. 600. Trapezoidal block structure; 610. Arc-shaped surface. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] like Figure 1-8 As shown, one embodiment of this utility model discloses a tapered roller bearing injection-molded cage, comprising a large-diameter ring 100, a small-diameter ring 200, a crossbeam 300, an outer limiting block 400, and an inner limiting block 500; several crossbeams 300 are provided; several crossbeams 300 are disposed between the large-diameter ring 100 and the small-diameter ring 200; a pocket 310 is formed between two adjacent crossbeams 300, and tapered rollers are installed in the pocket 310; the crossbeams 300 are provided with through holes 320 communicating in the circumferential direction; the outer limiting block 400 includes a first limiting block 410 and a second limiting block 500. 20, all are set on the outer surface of the crossbeam 300. The first limiting block 410 is connected to the large end diameter ring 100; the second limiting block 420 is close to the small end diameter ring 200; the first limiting block 410 and the second limiting block 420 are arranged in an alternating manner; the inner limiting block 500 includes a third limiting block 510 and a fourth limiting block 520, both set on the inner surface of the crossbeam 300. The third limiting block 510 is close to the large end diameter ring 100; the fourth limiting block 520 is close to the small end diameter ring 200; the third limiting block 510 and the fourth limiting block 520 are arranged in an alternating manner.

[0016] In one embodiment, the outer limiting block 400 is a trapezoidal block structure 600; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces 610.

[0017] In one embodiment, the inner limiting block 500 is a trapezoidal block structure 600; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces 610.

[0018] In one embodiment, the opening of the through hole 320 abuts against the circumferential surface of the roller to cover the opening of the through hole 320.

[0019] In one embodiment, grease is injected into the through hole 320 for lubrication of the roller circumferential surface.

[0020] In one embodiment, the through hole 320 is a rectangular through hole 320.

[0021] In one embodiment, the large end diameter ring 100, the small end diameter ring 200, the crossbeam 300, the outer limiting block 400, and the inner limiting block 500 are integrally molded injection structures.

[0022] In one embodiment, a bearing employs a tapered roller bearing with a molded cage.

[0023] In the aforementioned injection-molded cage and bearing of a tapered roller bearing, firstly, the choice of plastic material to replace the metal material of the traditional stamped cage reduces material costs; secondly, the plastic material is more flexible in contact with the rollers during actual operation than the metal material, reducing the probability of roller wear. Furthermore, the central opening design further reduces material costs while increasing lubricant permeability, resulting in more thorough and even lubrication of the bearing. In addition to these advantages, the weight reduction brought about by the material and structural design makes the bearing lighter under the same load, reducing bearing inertia and improving performance in actual operation.

[0024] The outer and inner limit blocks are arranged alternately with the rollers, which does not affect the assembly. The 500-degree fit between the outer and inner limit blocks ensures the stability of the rollers. The three pockets as a group also avoid the problems of excessively large overall cage molds, difficult mold opening and high cost.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A tapered roller bearing injection-molded cage, characterized in that: include Large end diameter ring, Small end diameter ring, A plurality of crossbeams are provided; the plurality of crossbeams are provided between the large end diameter ring and the small end diameter ring; a pocket is formed between two adjacent crossbeams, and a tapered roller is installed in the pocket; the crossbeams are provided with through holes that are connected in the circumferential direction. The outer limiting block includes a first limiting block and a second limiting block, both of which are disposed on the outer surface of the crossbeam. The first limiting block is connected to the large end diameter ring; the second limiting block is close to the small end diameter ring; the first limiting block and the second limiting block are arranged in an alternating manner. The inner limiting blocks, including a third limiting block and a fourth limiting block, are both disposed on the inner surface of the crossbeam. The third limiting block is close to the large end diameter ring, and the fourth limiting block is close to the small end diameter ring. The third limiting block and the fourth limiting block are arranged in an alternating manner.

2. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: The outer limiting block is a trapezoidal block structure; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces.

3. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: The inner limiting block is a trapezoidal block structure; the two side waist surfaces of the trapezoidal block are arc-shaped surfaces.

4. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: The opening of the through hole abuts against the circumferential surface of the roller to cover the opening of the through hole.

5. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: Grease is injected into the through hole for lubrication of the roller's circumferential surface.

6. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: The through hole is a rectangular hole.

7. The tapered roller bearing injection-molded cage according to claim 1, characterized in that: The large end diameter ring, small end diameter ring, crossbeam, outer limiting block, and inner limiting block are integrally molded injection-molded structures.

8. A bearing, characterized in that: A bearing employing a tapered roller bearing with an injection-molded cage as described in any one of claims 1-6.

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