Injection molding split cylindrical roller retainer capable of self-locking

Abstract

The utility model discloses a self-locking injection molding split cylindrical roller retainer, and belongs to the technical field of bearings. The device comprises a plurality of retainer units used for containing rollers, all the retainer units define an annular retainer set, the annular retainer set is located between a bearing inner ring and a bearing outer ring, and a gap is formed between every two adjacent retainer units; the retainer unit is used for semi-coating the roller, and a self-locking structure for positioning the roller is arranged on the retainer unit. In the installation process of the retainer, the retainer is formed by split type splicing, the fracture risk of the retainer can be reduced in the operation process of the retainer, stress points can be further dispersed through gaps generated by connection of the adjacent retainer units, and the service life of the retainer is prolonged. In addition, the maintenance cost is reduced, and a simple, complete and integrated retainer structure is transformed into a split type structure.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an injection-molded split cylindrical roller cage capable of self-locking. Background Art

[0002] A bearing cage refers to a bearing part located inside a bearing, which wraps all or part of the rolling elements and moves therewith, and is used to isolate the rolling elements, and usually also guides the rolling elements and holds them in the bearing.

[0003] The existing cylindrical roller cages have the following disadvantages:

[0004] 1. Different molds are required for traditional plastic cages of different diameters, resulting in high costs;

[0005] 2. There is a risk of fracture during the operation of the cage;

[0006] 3. The entire cage needs to be replaced after damage, resulting in high maintenance costs. Content of the Utility Model

[0007] The purpose of the utility model is to provide an efficient injection-molded split cylindrical roller cage capable of self-locking.

[0008] To solve the above technical problems, the utility model provides an injection-molded split cylindrical roller cage capable of self-locking, which includes a number of cage units for placing rollers. All the cage units enclose to form an annular cage group, and the annular cage group is located between the inner ring and the outer ring of the bearing. There is a gap between adjacent cage units; the cage units semi-wrap the rollers, and a self-locking structure for positioning the rollers is arranged on the cage units.

[0009] Preferably, a pocket is arranged on the cage unit;

[0010] The roller is placed in the pocket.

[0011] Preferably, the self-locking structure is an arc-shaped plate.

[0012] Preferably, the self-locking structure is formed by the cage unit extending towards the inner and outer sides of the annular cage group around the pocket.

[0013] Preferably, the roller is cylindrical.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] During the installation process of the cage of the present utility model, it is formed by splicing in a split manner. By adjusting the number of cage units, the diameter of the spliced cage can be freely adjusted. During the operation of this cage, the risk of cage fracture can be reduced. Moreover, through the gaps generated by the connection of adjacent cage units, the stress points can be further dispersed, achieving an increase in the cage life and enabling the cage to be made larger. This also reduces the maintenance cost. From the simple integral cage structure, it is transformed into a split structure. If one cage unit is damaged and replaced with a new one, it can be used normally, reducing the product replacement cost. Brief Description of the Drawings

[0016] The following further elaborates on the specific embodiments of the present utility model in conjunction with the drawings.

[0017] Figure 1 It is a schematic structural diagram of an injection-molded split cylindrical roller cage of the present utility model that can self-lock;

[0018] Figure 2 It is a schematic structural diagram of a cage unit;

[0019] In the figure:

[0020] 1 - cage unit; 2 - pocket; 3 - self-locking structure; 4 - roller; 7 - gap; 8 - annular cage group. Specific Embodiments

[0021] Many specific details are set forth in the following description in order to provide a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] The terms used in one or more embodiments of this specification are only for the purpose of describing specific embodiments and are not intended to limit one or more embodiments of this specification. The singular forms "a", "the", and "said" used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more of the associated listed items.

[0023] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of this specification to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to a determination".

[0024] The following further describes the present utility model in detail with reference to the accompanying drawings:

[0025] The present utility model provides an injection-molded split cylindrical roller cage capable of self-locking, including a plurality of cage units 1 for placing rollers 4. All the cage units 1 enclose to form an annular cage group 8. The annular cage group 8 is located between the bearing inner ring and the bearing outer ring. A gap 7 is provided between adjacent cage units 1; the cage unit 1 semi-covers the roller 4, and a self-locking structure 3 for positioning the roller 4 is provided on the cage unit 1.

[0026] Preferably, a pocket 2 is provided on the cage unit 1;

[0027] The roller 4 is placed in the pocket 2.

[0028] Preferably, the self-locking structure 3 is an arc-shaped plate.

[0029] Preferably, the self-locking structure 3 is formed by the cage unit 1 extending towards the inner and outer sides of the annular cage group 8 around the pocket 2.

[0030] Preferably, the roller 4 is cylindrical.

[0031] To better illustrate the technical effects of the present utility model, the following specific embodiments are provided to illustrate the above technical process:

[0032] Embodiment 1. An injection-molded split cylindrical roller cage capable of self-locking, as Figures 1-2 shown, includes a plurality of cage units 1. All the cage units 1 enclose to form an annular cage group 8. The annular cage group 8 is located between the bearing inner ring and the bearing outer ring. The cage is transformed from a simple complete integral cage structure to the split structure of this embodiment. Such a cage can reduce the risk of cage fracture during operation; in addition, when one of the cage units 1 is damaged and a new cage unit 1 is replaced, it can be used normally, reducing the product replacement cost.

[0033] The cage unit 1 is provided with pocket holes 2. The rollers 4 are placed in the pocket holes 2 in a semi-covered manner, so that the contact area between the pocket holes 2 and the rollers 4 is reduced, and the wear between the two is reduced.

[0034] The cage unit 1 extends to form an arc-shaped self-locking structure 3 on both the inner and outer sides of the annular cage group 8 around the pocket holes 2. The rollers 4 are positioned by the self-locking structure 3, and can prevent the rollers 4 from falling off under radial or axial load forces.

[0035] Since the annular cage group 8 is formed by enclosing the cage unit 1, and the adjacent cage units 1 are not fixedly connected, there will be a gap 7 between the adjacent cage units 1. The gap 7 can disperse the stress points during the operation of the cage, and realize the enhancement of the cage life.

[0036] The cage unit 1 can be of any number as long as it can enclose to form the annular cage group 8. By adjusting the number of cage units, the diameter of the spliced cage can be freely adjusted. In this embodiment 1, as Figure 1 shown, 19 cage units 1 are adopted.

[0037] The mold opening cost of the cage in this embodiment is low. The mold does not use sliders and adopts a two-plate mold.

[0038] As mentioned above, only the specific embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An injection-molded split cylindrical roller cage capable of self-locking, characterized in that, It includes a number of cage units (1) for placing rollers (4). All the cage units (1) enclose to form an annular cage group (8). The annular cage group (8) is located between the inner ring and the outer ring of the bearing, and a gap (7) is provided between adjacent cage units (1); the cage unit (1) semi-covers the roller (4), and a self-locking structure (3) for positioning the roller (4) is provided on the cage unit (1).

2. The injection-molded split cylindrical roller cage capable of self-locking according to claim 1, characterized in that: A pocket hole (2) is provided on the cage unit (1); The roller (4) is placed in the pocket hole (2).

3. The injection-molded split cylindrical roller cage capable of self-locking according to claim 1, characterized in that: The self-locking structure (3) is an arc-shaped plate.

4. The injection-molded split cylindrical roller cage capable of self-locking according to claim 3, characterized in that: The self-locking structure (3) is formed by the cage unit (1) extending towards the inner and outer sides of the annular cage group (8) around the pocket hole (2).

5. The injection-molded split cylindrical roller cage capable of self-locking according to claim 1, characterized in that: The roller (4) is cylindrical.

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