Retainer of one-way bearing

Abstract

The utility model relates to a retainer for a one-way bearing in a household appliance, a washing machine clutch and a new energy electric driving system, which comprises retaining rings positioned on two opposite sides, a plurality of auxiliary assemblies are arranged between the two retaining rings along the circumference at intervals, and roller mounting positions are formed between the adjacent auxiliary assemblies. The auxiliary assembly comprises an arc-shaped installation base table and an auxiliary part, one side of the installation base table in the circumferential direction is a base installation position of the auxiliary part, and the auxiliary part is arranged at the base installation position. According to the one-way bearing, when the one-way bearing operates at a high rotating speed, the retainer can guarantee the reliability of product performance.

Description

Technical Field

[0001] The present application relates to the field of bearings, and in particular to a retaining frame for a one-way bearing used in household appliances, washing machine clutches, and new energy electric drive systems. Background Art

[0002] At present, the one-way clutch (i.e. one-way bearing) used in household appliances, washing machine clutches, single-wheel, double-wheel, three-wheel and even multi-wheel new energy electric drive systems refers to a bearing that can rotate freely in one direction without rotation restriction, but will be locked and unable to rotate in the other direction. This type of bearing can realize the function of one-way clutch, overrunning clutch, stepping clutch and backstop according to different application scenarios.

[0003] However, the inventor believes that there is still room for improvement in the reliability of the cages of some traditional one-way bearings on the market in ensuring product performance when subjected to high speed operation. Utility Model Content

[0004] In order to effectively improve the one-way bearing when running at high speed, its cage can ensure the reliability of product performance.

[0005] The present application provides a one-way bearing retainer, which adopts the following technical solution:

[0006] A retaining frame of a one-way bearing includes retaining rings located on two opposite sides, a plurality of auxiliary position components are arranged between the two retaining rings along the circumference, and a roller mounting position is formed between adjacent auxiliary position components. The auxiliary position component includes an arc-shaped mounting base and an auxiliary position member, one side of the mounting base along the circumferential direction is a base mounting position of the auxiliary position member, and the auxiliary position member is arranged at the base mounting position.

[0007] Optionally, the auxiliary member includes a mounting base and an elastic arm, the elastic arm is arranged on the mounting base and extends in a direction away from the base mounting position, and the mounting base is arranged at the base mounting position.

[0008] Optionally, the end surfaces of the mounting base and the mounting base away from the elastic arm are provided with a first arc-shaped concave surface, and the end surface of the mounting base away from the mounting base is provided with a second arc-shaped concave surface.

[0009] Optionally, there is a gap between the inner side surface of the elastic arm close to the mounting base and the mounting base, and the gap between the inner side surface of the elastic arm and the mounting base forms an elastic movable gap of the elastic arm.

[0010] Optionally, an outer side surface of the elastic arm away from the mounting base is provided with an arc surface, and the highest position of the arc surface is close to one side of the base mounting position.

[0011] Optionally, the diameter of one of the retaining rings is smaller than the diameter of the other retaining ring, a plurality of support brackets are arranged at circumferential intervals along the direction of the small diameter retaining ring toward the large diameter retaining ring, and the mounting bases are arranged at circumferential intervals on the side of the large diameter retaining ring toward the small diameter retaining ring, the number and positions of the mounting bases match the support brackets, and the mounting bases are all installed on corresponding support brackets.

[0012] Optionally, the support bracket includes two support arms that are spaced apart, and there is a certain distance between one end of the two support arms away from the small-diameter retaining ring and the large-diameter retaining ring.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] 1. Through the improvement of the cage structure and the design of the auxiliary assembly, it can not only serve as the basic structure for the relative positions of the unlimited rollers and the one-way wedge rollers installed on the cage, but also can be used to cooperate with the one-way wedge roller to achieve steering limit, so that the one-way wedge roller can maintain a basic posture in the corresponding roller installation position, effectively ensuring the performance reliability of this product during use and reducing the failure problem caused by the unstable posture of the one-way wedge roller.

[0015] 2. The design of the first arc-shaped concave surface and the second arc-shaped concave surface can better adapt to the activity space of the corresponding non-directional roller and the unidirectional wedge-shaped roller.

[0016] 3. The design of small diameter retaining ring and large diameter retaining ring facilitates the assembly of the retaining frame and can also ensure the stability of the matching between the various parts after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an exploded structure in which a retaining frame of a one-way bearing according to an embodiment of the present application is installed on the inner ring and outer ring of the bearing.

[0018] Figure 2 This is one of the schematic cross-sectional views of a one-way bearing retainer installed on the inner and outer rings of the bearing according to an embodiment of the present application.

[0019] Figure 3 This is the second schematic cross-sectional structure diagram of a one-way bearing retainer installed on the inner ring and outer ring of the bearing according to an embodiment of the present application.

[0020] Figure 4 It is a schematic structural diagram of a retainer of a one-way bearing according to an embodiment of the present application.

[0021] Figure 5 This is one of the schematic diagrams of a one-way wedge roller structure matched with a retaining frame of a one-way bearing in an embodiment of the present application.

[0022] Figure 6 This is the second schematic diagram of a one-way wedge roller structure matched with a retaining frame of a one-way bearing in an embodiment of the present application.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Inner ring; 2. Outer ring; 3. Retaining ring; 4. Unrestricted roller; 5. Mounting base; 6. Mounting base; 7. Elastic arm; 8. First arcuate concave surface; 9. Second arcuate concave surface; 10. Arc surface; 11. Support arm; 12. Outer boss; 13. Inner boss; 14. Cylindrical body; 15. Wedge-shaped base; 16. Flat cut surface; 17. Limiting nozzle; 18. Groove; 19. First arcuate side wall; 20. Second arcuate side wall; 21. Third arcuate side wall. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1 to 6 This application is described in further detail.

[0025] Embodiment 1 of the present application discloses a retainer for a one-way bearing. Figures 1 to 3 , including an inner ring 1 and an outer ring 2, a retaining frame is installed between the outer ring surface of the inner ring 1 and the inner ring surface of the outer ring 2, the retaining frame includes retaining rings 3 located on opposite sides, a plurality of auxiliary position components are arranged between the two retaining rings 3 along the circumference, and a roller mounting position is formed between adjacent auxiliary position components, and the retaining frame is sequentially installed with unlimited rollers 4 and unidirectional wedge rollers on the roller mounting positions along the circumference, the unlimited rollers 4 can be cylindrical rollers, and a rotation limit is formed between the unidirectional wedge roller and the corresponding auxiliary position component, and the auxiliary position component corresponding to the unidirectional wedge roller includes an arc-shaped mounting base 5 and an auxiliary position member, one side of the mounting base 5 along the circumferential direction is a base mounting position of the auxiliary position member, and the auxiliary position member is arranged at the base mounting position.

[0026] Reference Figure 4 , wherein the auxiliary positioning member includes a mounting base 6 and an elastic arm 7, the elastic arm 7 is arranged on the mounting base 6 and extends in a direction away from the base mounting position, one end of the elastic arm 7 away from the base mounting position forms a rotation limit with the one-way wedge roller, and the mounting base 6 is arranged at the base mounting position; the end surfaces of the mounting base 5 and the mounting base 6 away from the elastic arm 7 are provided with a first arc-shaped concave surface 8, and the end surface of the mounting base 5 away from the mounting base 6 is provided with a second arc-shaped concave surface 9, and the first arc-shaped concave surface 8 and the second arc-shaped concave surface 9 can better adapt to the activity space of the unlimited roller 4 and the one-way wedge roller in the corresponding roller mounting position.

[0027] There is a gap between the inner side surface of the elastic arm 7 close to the mounting base 5 and the mounting base 5, and the gap between the inner side surface of the elastic arm 7 and the mounting base 5 forms an elastic activity gap of the elastic arm 7; the outer side surface of the elastic arm 7 away from the mounting base 5 is provided with an arc surface 10, and the highest position of the arc surface 10 is close to the side of the base mounting position and has a certain gap with the inner ring surface of the outer ring 2, so that the relative position of the end of the elastic arm 7 away from the mounting base 6 is lower, which can better cooperate with the corresponding unidirectional wedge roller.

[0028] In this embodiment, the diameter of one of the retaining rings 3 is smaller than the diameter of the other retaining ring 3, and a plurality of support brackets are arranged at intervals along the circumference of the small-diameter retaining ring 3 toward the large-diameter retaining ring 3, and the mounting bases 5 are arranged at intervals along the circumference on the side of the large-diameter retaining ring 3 facing the small-diameter retaining ring 3, the number and positions of the mounting bases 5 match the support brackets, and the mounting bases 5 are all installed on the corresponding support brackets; wherein, the support brackets include two support arms 11 arranged at intervals, and there is a certain distance between the ends of the two support arms 11 away from the small-diameter retaining ring 3 and the large-diameter retaining ring 3.

[0029] In addition, an annular outer boss 12 is provided on the outer ring surface of the inner ring 1 at a position corresponding to the large diameter retaining ring 3, and an annular inner boss 13 is provided on the inner ring surface of the outer ring 2 at a position corresponding to the small diameter retaining ring 3. The inner ring surface of the small diameter retaining ring 3 is close to the outer ring surface of the inner ring 1, and the inner ring surface of the large diameter retaining ring 3 is close to the outer ring surface of the outer boss 12. This design facilitates the assembly of various parts and components, and can also ensure the stability of the matching between the various parts and components after assembly. During assembly, the retainer can be firstly One side of the diameter retaining ring 3 is installed toward the side of the outer ring surface of the inner ring 1 without the outer boss 12, until the position of the large diameter retaining ring 3 corresponds to the outer boss 12, and then the corresponding unlimited roller 4 and the one-way wedge roller are installed into the corresponding roller mounting positions in sequence, and then the side of the inner ring surface of the outer ring 2 without the inner boss 13 is installed toward the side of the retaining frame with the small diameter retaining ring 3, until the position of the small diameter retaining ring 3 corresponds to the inner boss 13. This assembly method reduces the cumbersome troubles of traditional bearing assembly to a certain extent.

[0030] In this embodiment, when the outer ring 2 rotates counterclockwise or clockwise relative to the inner ring 1, that is, when the outer ring 2 rotates in a certain direction relative to the inner ring 1, a contact limit is formed between the inner ring surface of the outer ring 2 and the one-way wedge roller, while when rotating in the opposite direction, no rotation constraint is formed. Figure 5The one-way wedge roller includes a cylindrical body 14 and a wedge-shaped base 15. A plane section 16 is provided on one side of the outer wall of the cylindrical body 14 adjacent to the wedge-shaped base 15. One end of the wedge-shaped base 15 is connected to the plane section 16 and a limiting mouth 17 is provided on the other end. An arc-shaped groove 18 is provided between the limiting mouth 17 and the outer wall of the cylindrical body 14. The end of the elastic arm 7 away from the mounting base 6 is matched with the groove 18 and forms a rotation limit. The cooperation here can prevent the one-way wedge roller from continuing to rotate in the direction of the corresponding elastic arm 7, and can prevent the wedge-shaped base 15 of the one-way wedge roller from rotating to the side of the inner ring 1, which may make the overall one-way limiting function invalid. Therefore, the cooperation between the elastic arm 7 and the groove 18 is designed so that the limiting mouth 17 will not continue to rotate due to the limiting of the elastic arm 7. At the same time, the elastic action of the elastic arm 7 can be used to make the highest position of the wedge-shaped base 15 relative to the inner ring 1 form a conflict with the inner ring surface of the outer ring 2.

[0031] When the outer ring 2 of the one-way wedge roller mentioned above rotates in a certain direction relative to the inner ring 1, the inner ring surface of the outer ring 2 conflicts with the highest position of the one-way wedge roller relative to the inner ring 1. At this time, the one-way wedge roller will rotate with the rotation of the outer ring 2, until the limiting mouth 17 conflicts with the inner ring surface of the outer ring 2. The pressing force between the one-way wedge roller and the inner ring 1 and the outer ring 2 is greater, and the one-way wedge roller will press the outer ring 2 tightly so that the outer ring 2 cannot continue to rotate relative to the inner ring 1, thus forming a rotation limiting effect. When the outer ring 2 rotates in the opposite direction relative to the inner ring 1, the one-way wedge roller will also rotate with the rotation of the outer ring 2 until the plane section 16 of the one-way wedge roller faces the outer ring 2. At this time, the one-way wedge roller does not conflict with the outer ring 2 or the conflicting force between the two is very small, or the friction between the two is very small, so that the rotation of the outer ring 2 relative to the inner ring 1 is not constrained.

[0032] In order to ensure that the inner surface of the outer ring 2 and the highest position of the one-way wedge roller relative to the inner ring 1 can collide with each other, and when the limit nozzle 17 and the inner surface of the outer ring 2 collide, the one-way wedge roller and the inner ring 1 and the outer ring 2 have a greater pressing force, refer to Figure 6The outer wall of the wedge-shaped base 15 is a first arcuate side wall 19, and the arcuate surface 10 of the first arcuate side wall 19 intersects with the plane cut surface 16, and the outer wall of the cylindrical body 14 is provided with a second arcuate side wall 20 and a third arcuate side wall 21 in sequence from the end corresponding to the limiting mouth 17 to the end connected to the plane cut surface 16, and the arcuate surface 10 of the third arcuate side wall 21 intersects with the plane cut surface 16; the center of the circle where the second arcuate side wall 20 is located does not coincide with the center of the circle where the third arcuate side wall 21 is located, the radius of the circle where the second arcuate side wall 20 is located is greater than the radius of the circle where the third arcuate side wall 21 is located, and the arcuate surface 10 of the second arcuate side wall 20 intersects with the arcuate surface 10 of the third arcuate side wall 21. Through the above-mentioned design scheme, the reliability of the performance of the one-way bearing when running at high speed can be effectively improved, and the one-way limiting ability is also greatly improved.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A retainer for a one-way bearing, characterized in that: The invention comprises retaining rings (3) located on two opposite sides, a plurality of auxiliary position components are arranged at intervals along the circumference between the two retaining rings (3), a roller mounting position is formed between adjacent auxiliary position components, the auxiliary position component comprises an arc-shaped mounting base (5) and an auxiliary position component, one side of the mounting base (5) along the circumferential direction is a base mounting position of the auxiliary position component, and the auxiliary position component is arranged at the base mounting position.

2. A retainer for a one-way bearing according to claim 1, characterized in that: The auxiliary position member comprises a mounting base (6) and an elastic arm (7), wherein the elastic arm (7) is arranged on the mounting base (6) and extends in a direction away from the base mounting position, and the mounting base (6) is arranged at the base mounting position.

3. A retainer for a one-way bearing according to claim 2, characterized in that: The end surfaces of the mounting base (5) and the mounting pedestal (6) away from the elastic arm (7) are provided with a first arc-shaped concave surface (8), and the end surface of the mounting base (5) away from the mounting pedestal (6) is provided with a second arc-shaped concave surface (9).

4. A retainer for a one-way bearing according to claim 2, characterized in that: There is a gap between the inner side surface of the elastic arm (7) close to the mounting base (5) and the mounting base (5), and the gap between the inner side surface of the elastic arm (7) and the mounting base (5) forms an elastic activity gap of the elastic arm (7).

5. A retainer for a one-way bearing according to claim 4, characterized in that: The outer side surface of the elastic arm (7) away from the mounting base (5) is provided with an arc surface (10), and the highest position of the arc surface (10) is close to one side of the base mounting position.

6. The retainer of a one-way bearing according to claim 1, characterized in that: The diameter of one of the retaining rings (3) is smaller than the diameter of the other retaining ring (3); a plurality of support brackets are arranged at intervals along the circumference of the small diameter retaining ring (3) in the direction of the large diameter retaining ring (3); the mounting bases (5) are arranged at intervals along the circumference on the side of the large diameter retaining ring (3) facing the small diameter retaining ring (3); the number and position of the mounting bases (5) match the support brackets, and the mounting bases (5) are all mounted on the corresponding support brackets.

7. A retainer for a one-way bearing according to claim 6, characterized in that: The support bracket comprises two support arms (11) arranged at intervals, and a certain distance exists between one end of the two support arms (11) away from the small-diameter retaining ring (3) and the large-diameter retaining ring (3).

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