Flexible bearing structure with locking opening structure

Abstract

The utility model discloses a flexible bearing structure with a fore shaft structure, which comprises a bearing outer ring, a bearing inner ring, a combined retainer and a plurality of balls, the balls are all mounted on the combined retainer, the combined retainer is positioned between the bearing outer ring and the bearing inner ring, the combined retainer comprises a bracket and a compression ring, and the compression ring is positioned between the bracket and the compression ring. A plurality of U-shaped grooves are formed in the bracket, the balls are located in the corresponding U-shaped grooves, inserting grooves are formed in the positions, located between every two peripheral walls, of the peripheral walls of the bracket, and locking grooves are formed in the bottom ends of the inserting grooves; according to the utility model, the L-shaped clamping jaws are matched with the slots and the locking grooves, so that the pressing ring can be locked on the bracket, and the top end opening of the U-shaped groove is blocked by using the pressing ring, thereby effectively preventing the balls from being separated from the U-shaped groove, and the plurality of groups of L-shaped clamping jaws are matched with the slots and the locking grooves; and the bracket and the pressing ring can still be stably locked with each other after being deformed into an oval shape, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of flexible bearing technology, specifically a flexible bearing structure with a locking mechanism. Background Technology

[0002] Flexible bearings utilize the controllable elastic deformation of flexible elements to transmit motion and power. They are characterized by a large transmission ratio and wide applicability, high precision, small backlash, large load capacity, high efficiency, small size, light weight, smooth transmission, low noise, and the ability to transmit motion into sealed spaces.

[0003] A search revealed that patent CN218992130U discloses a flexible bearing retainer with a locking structure and a flexible bearing. This design improves the fit between the locking-type ball catch, the straight-cylinder ball catch, and the steel ball. This allows for maximum spherical contact between the ball catch and the steel ball, extending the retainer's lifespan. Furthermore, when the bearing is in a lubricated environment, it facilitates the formation of a lubricating oil film on the surface of the steel ball.

[0004] While the above solution can confine the steel ball within the cylindrical ball pocket using a locking structure, the cylindrical ball pocket remains open. When the flexible bearing is used in the wave generator of a harmonic drive transmission and is assembled and used with an elliptical cam, the flexible bearing also needs to be deformed into an elliptical shape to fit its inner ring onto the cam. At this time, the cage will also become elliptical, causing the locking structure to deform and making it easy for the steel ball to fall out of the cylindrical ball pocket. This results in poor reliability and needs improvement. Utility Model Content

[0005] The purpose of this invention is to provide a flexible bearing structure with a locking mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flexible bearing structure with a locking mechanism includes an outer bearing ring, an inner bearing ring, a combined cage, and several balls. The balls are all mounted on the combined cage, which is located between the outer and inner bearing rings. The combined cage includes a bracket and a retaining ring. The bracket has multiple U-shaped grooves, and the balls are located in the corresponding U-shaped grooves. The outer peripheral wall of the bracket has slots between every two U-shaped grooves, and the bottom of each slot has a locking groove. The bottom of the retaining ring has two L-shaped claws corresponding to each slot.

[0008] As a further embodiment of this utility model: the bottom end of the L-shaped claw is adapted to the locking groove, and the bottom end of the L-shaped claw is provided with a bevel.

[0009] As a further embodiment of this utility model: the bottom of the pressure ring is provided with a protrusion at the corresponding position of each U-shaped groove, and the bottom surface of the protrusion is provided with a positioning groove adapted to the ball.

[0010] As a further embodiment of this utility model: the top opening of the U-shaped groove is provided with chamfers on both sides.

[0011] As a further embodiment of this utility model: both the inner circumferential wall of the bearing outer ring and the outer circumferential wall of the bearing inner ring are provided with annular grooves, and the annular grooves are adapted to the balls.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes the cooperation of L-shaped claws, slots, and locking grooves to lock the pressure ring onto the bracket, thereby sealing the top opening of the U-shaped groove with the pressure ring, effectively preventing the ball from coming out of the U-shaped groove. Furthermore, the cooperation of multiple sets of L-shaped claws with slots and locking grooves ensures that the bracket and pressure ring can still be stably locked together even after they are deformed into an elliptical shape, resulting in good performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a flexible bearing structure with a locking mechanism.

[0015] Figure 2 This is a schematic diagram of a flexible bearing structure with a locking mechanism.

[0016] Figure 3 This is a schematic diagram of the bracket in a flexible bearing structure with a locking mechanism.

[0017] Figure 4 This is a schematic diagram of the pressure ring in a flexible bearing structure with a locking mechanism.

[0018] Among them, the bearing outer ring 1, bearing inner ring 2, annular groove 3, ball 4, bracket 5, U-shaped groove 6, slot 7, locking groove 8, pressure ring 9, protrusion 10, positioning groove 11, L-shaped claw 12, bevel 13, and chamfer 14. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0023] Please see Figures 1-4 In this embodiment of the present invention, a flexible bearing structure with a locking mechanism includes an outer bearing ring 1, an inner bearing ring 2, a combined cage, and several balls 4. The balls 4 are all mounted on the combined cage, which is located between the outer bearing ring 1 and the inner bearing ring 2. The combined cage includes a bracket 5 and a pressure ring 9. The bracket 5 has multiple U-shaped grooves 6, and the balls 4 are located in the corresponding U-shaped grooves 6. The outer peripheral wall of the bracket 5 has slots 7 between every two U-shaped grooves 6. The bottom of the slots 7 is provided with locking grooves 8. The bottom of the pressure ring 9 is provided with two L-shaped claws 12 corresponding to each slot 7.

[0024] By adopting the above-mentioned solution, this utility model utilizes the cooperation of L-shaped claws 12 with slots 7 and locking grooves 8 to lock the pressure ring 9 onto the bracket 5, thereby sealing the top opening of the U-shaped groove 6 with the pressure ring 9, effectively preventing the ball 4 from coming out of the U-shaped groove 6. Furthermore, the cooperation of multiple sets of L-shaped claws 12 with slots 7 and locking grooves 8 ensures that the bracket 5 and pressure ring 9 can still be stably locked together even after they are deformed into an elliptical shape, resulting in good performance.

[0025] Specific combination Figure 3 and Figure 4 In one embodiment of the present invention, the bottom end of the L-shaped claw 12 is adapted to the locking groove 8, and the bottom end of the L-shaped claw 12 is provided with a bevel 13.

[0026] The inclined surface 13 provides a guiding function when the L-shaped claw 12 is inserted into the slot 7.

[0027] Specific combination Figure 3 and Figure 4 In one embodiment of the present invention, the bottom of the pressure ring 9 is provided with a protrusion 10 corresponding to each U-shaped groove 6, and the bottom surface of the protrusion 10 is provided with a positioning groove 11 adapted to the ball 4. Furthermore, the top opening of the U-shaped groove 6 is provided with chamfers 14 on both sides.

[0028] By setting the protrusion 10, the ball 4 can be limited in the U-shaped groove 6 to prevent the ball 4 from moving around in the U-shaped groove 6, thereby improving the stability of the flexible bearing. By setting the chamfer 14, the top opening size of the U-shaped groove 6 can be slightly larger than the bottom size of the protrusion 10, so that the protrusion 10 can be easily inserted into the U-shaped groove 6.

[0029] Specific combination Figure 2 In one embodiment of this utility model, both the inner peripheral wall of the bearing outer ring 1 and the outer peripheral wall of the bearing inner ring 2 are provided with annular grooves 3, which are adapted to the balls 4.

[0030] 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 flexible bearing structure with a locking mechanism, characterized in that: The bearing includes an outer ring (1), an inner ring (2), a combined cage, and several balls (4). The balls (4) are all mounted on the combined cage, which is located between the outer ring (1) and the inner ring (2). The combined cage includes a bracket (5) and a pressure ring (9). The bracket (5) has multiple U-shaped grooves (6), and the balls (4) are located in the corresponding U-shaped grooves (6). The outer peripheral wall of the bracket (5) has slots (7) between every two U-shaped grooves (6). The bottom of the slots (7) is provided with locking grooves (8). The bottom of the pressure ring (9) is provided with two L-shaped claws (12) corresponding to each slot (7).

2. The flexible bearing structure with a locking mechanism according to claim 1, characterized in that: The bottom end of the L-shaped claw (12) is adapted to the locking groove (8), and the bottom end of the L-shaped claw (12) is provided with a bevel (13).

3. The flexible bearing structure with a locking mechanism according to claim 1, characterized in that: The bottom of the pressure ring (9) and the corresponding position of each U-shaped groove (6) are provided with protrusions (10), and the bottom surface of the protrusions (10) is provided with positioning grooves (11) that are adapted to the ball (4).

4. The flexible bearing structure with a locking mechanism according to claim 1, characterized in that: The top opening of the U-shaped groove (6) is provided with chamfers (14) on both sides.

5. The flexible bearing structure with a locking mechanism according to claim 1, characterized in that: The inner circumferential wall of the bearing outer ring (1) and the outer circumferential wall of the bearing inner ring (2) are both provided with annular grooves (3), which are adapted to the balls (4).

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