One-way bearing without cage

Abstract

The invention discloses a one-way bearing without a retainer, comprising a bearing outer ring, an elastic frame, a retaining ring, a rolling element and a bearing inner ring; the bearing outer ring is installed concentrically with the bearing inner ring, a plurality of wedges are arranged on the inner wall of the bearing outer ring, the wedges cooperate with the rolling element, a plurality of elastic frames are installed between the bearing outer ring and the bearing inner ring, the elastic frame comprises a baffle, a first spring plate and a second spring plate, springs are arranged at both ends of the baffle, the lower end of the baffle is connected to one end of the first spring plate through the spring, the other end of the first spring plate is connected to the second spring plate, the second spring plate cooperates with the rolling element, retaining rings are installed at both ends of the bearing outer ring, a through groove is arranged on the retaining ring, and the springs cooperate with the through groove to limit the position and angle of the elastic frame. Beneficial effects: the spring plate contacts the rolling element, changing the surface contact into line contact, thereby increasing the life of the bearing; the detachable elastic frame reduces the difficulty of assembling the rolling element; the combination of the small-angle wedge and the elastic frame ensures that when the bearing reaches the life limit, the bearing continues to rotate, providing sufficient maintenance time for the machine.

Description

Technical Field

[0001] The invention relates to the field of bearings, and in particular to a one-way bearing without a cage. Background Art

[0002] One-way bearings, also called overrunning clutches, are bearings that can rotate freely in one direction and are locked in the other direction. One-way bearings in the prior art are mainly composed of a metal shell, and a plurality of rollers, needle rollers or balls contained therein. The cage is in the shape of a cage with multiple windows, and each window is provided with a rolling body and a spring to ensure that the rolling body can only roll in the window of the cage along the direction of the cage, and will generate great resistance in the other direction. One-way bearings in the prior art, especially miniature one-way bearings, are limited by the overall size. In order to fix the spring and guide the rolling body, a plastic cage with a cage structure of multiple windows is provided. This type of cage has a complex structure, is difficult to manufacture, has low strength, and is not resistant to high and low temperatures. During assembly, the rolling element and the rolling seat are assembled very closely, which makes the assembly process difficult and requires a lot of manual assembly, which is not conducive to the realization of automated machine assembly. At the same time, the spring on the rolling seat is easy to deform under stress. When the rolling element is worn, the plastic retainer is easily damaged by the impact of the rolling element, causing the one-way bearing to lock or slip in both directions, losing the one-way effect, and causing serious mechanical accidents. When the one-way bearing works in a slipping state for a long time, the high temperature generated by the friction between the rolling element and the inner and outer rings of the one-way bearing will melt the plastic retainer, which will also cause the one-way bearing to fail and cause serious mechanical accidents. Summary of the invention

[0003] In response to the situation in the above-mentioned background technology, the present invention provides a cageless one-way bearing, which adopts parts made of all-metal materials, abandons the fragile plastic cage, and replaces the cage with a detachable elastic structure, thereby reducing the number of parts making up the one-way bearing, improving the reliability of the one-way bearing, extending the service life of the one-way bearing, and expanding the application range of the one-way bearing. It is more suitable for use in extreme high and low temperature and high speed occasions, and can also be made into a one-way bearing with a smaller structure.

[0004] In order to solve the above technical problems, the present invention is solved through the following technical solutions: a cageless one-way bearing, comprising a bearing outer ring, an elastic frame, a retaining ring, a rolling element and a bearing inner ring, the bearing outer ring is concentrically installed with the bearing inner ring, a plurality of wedge blocks are provided on the inner side of the bearing outer ring, the wedge blocks cooperate with the rolling element, a plurality of elastic frames are installed between the bearing outer ring and the bearing inner ring, the elastic frame comprises a baffle, a first spring plate and a second spring plate, spring blocks are provided at both ends of the baffle, the lower end of the baffle is connected to one end of the first spring plate through the spring block, the other end of the first spring plate is connected to the second spring plate, the second spring plate cooperates with the rolling element, retaining rings are installed at both ends of the bearing outer ring, the retaining ring is provided with a through groove, the spring block cooperates with the through groove.

[0005] Preferably, a first groove, a second groove and a first protrusion are further provided on the inner side of the bearing outer ring.

[0006] Preferably, the retaining ring is also provided with a third groove, a second protrusion and a wedge-shaped groove.

[0007] Preferably, the first groove cooperates with the second protrusion, the second groove cooperates with the wedge-shaped groove, and the first protrusion cooperates with the third groove.

[0008] Preferably, side panels are provided on both sides of the baffle, and the side panels are arc-shaped.

[0009] Preferably, the distance between the top end of the wedge block and the outer surface of the inner ring of the bearing is smaller than the diameter of the rolling body, the distance between the bottom end of the wedge block and the outer surface of the inner ring of the bearing is larger than the diameter of the rolling body, and the distance between the first protrusion and the outer surface of the inner ring of the bearing is smaller than the diameter of the rolling body.

[0010] Preferably, the spring block is arc-shaped.

[0011] Preferably, all of the components are made of metal.

[0012] The beneficial effects of the present invention are as follows: by making the spring plate contact with the rolling body, the surface contact is changed to line contact, which greatly improves the service life of the bearing; the detachable elastic frame reduces the number of parts constituting the one-way bearing, greatly reduces the difficulty of assembling the rolling body, and thus improves production efficiency; the arc side plates on both sides of the baffle on the elastic frame ensure that when the bearing reaches the life limit and fails, the bearing can continue to rotate and lock, thereby providing sufficient maintenance time for the machine; the use of all-metal parts expands the application range of the one-way bearing, making it more suitable for use in extreme high and low temperatures and high speeds, and at the same time can be made into a one-way bearing with a smaller structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the elastic frame structure of the present invention.

[0016] Figure 4 It is a schematic diagram of the elastic frame in a compressed state of the present invention.

[0017] Figure 5 Schematic diagram of the outer ring of the present invention.

[0018] Figure 6 It is a schematic diagram of the retaining ring structure of the present invention.

[0019] In the figure: bearing outer ring 101, first groove 102, wedge block 103, second groove 104, first protrusion 105, retaining ring 201, third groove 202, second protrusion 203, wedge groove 204, through groove 205, elastic frame 301, baffle 302, first spring plate 303, second spring plate 304, spring block 305, side plate 306, bearing inner ring 4, rolling element 5. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-6 As shown, a cageless one-way bearing comprises a bearing outer ring 101, an elastic frame 301, a retaining ring 201, a rolling element 5 and a bearing inner ring 4. The bearing outer ring 101 is concentrically mounted with the bearing inner ring 4. A plurality of wedges 103 are arranged on the inner side of the bearing outer ring 101. The wedges 103 cooperate with the rolling element 5. A plurality of elastic frames 301 are installed between the bearing outer ring 101 and the bearing inner ring 4. The elastic frame 301 comprises a baffle 302, a first spring plate 303 and a second spring plate 304, spring blocks 305 are provided at both ends of the baffle 302, the lower end of the baffle 302 is connected to one end of the first spring plate 303 through the spring block 305, the other end of the first spring plate 303 is connected to the second spring plate 304, the second spring plate 304 cooperates with the rolling body 5, and retaining rings 201 are installed at both ends of the bearing outer ring 101, and a through groove 205 is provided on the retaining ring 201, and the spring block 305 cooperates with the through groove 205.

[0022] The inner side of the bearing outer ring 101 is further provided with a first groove 102 , a second groove 104 and a first protrusion 105 .

[0023] The retaining ring 201 is further provided with a third groove 202 , a second protrusion 203 and a wedge-shaped groove 204 .

[0024] The first groove 102 cooperates with the second protrusion 203 , the second groove 104 cooperates with the wedge-shaped groove 204 , and the first protrusion 105 cooperates with the third groove 202 .

[0025] Side plates 306 are disposed on both sides of the baffle 302 , and the side plates 306 are arc-shaped.

[0026] The distance between the top end of the wedge block 103 and the outer surface of the bearing inner ring 4 is smaller than the diameter of the rolling body 5, the distance between the bottom end of the wedge block 103 and the outer surface of the bearing inner ring 4 is larger than the diameter of the rolling body 5, and the distance between the first protrusion 105 and the outer surface of the bearing inner ring 4 is smaller than the diameter of the rolling body 5.

[0027] The spring block 305 is in an arc shape.

[0028] All the parts described are made of metal.

[0029] Specific working process: When the bearing rotates along the direction of freedom, the rolling element moves toward the direction of the compressed elastic frame while rotating. At this time, the two ends of the elastic frame are in a stuck state through the spring blocks and the retaining rings; compared with the one-way bearing with a cage, there is only a line contact between the rolling element and the elastic frame at this time, and its friction force is greatly reduced compared with the one-way bearing with a cage. At the same time, the contact is evenly distributed. Compared with the spring cage structure, it avoids the jamming of the spring due to uneven force, thereby improving the stability of the bearing operation.

[0030] When the bearing is reversely locked, the compression of the elastic frame is released. At this time, the rolling body moves to the top of the wedge block under the friction between the elastic frame and the inner and outer rings of the bearing. As the contact pressure between the inner and outer rings of the bearing increases, the bearing is locked. Compared with the failure caused by wear and jamming of the retaining frame, when the rolling body or the wedge block fails, the rolling body of the present invention will continue to move to contact the next elastic frame baffle under the elastic force of the elastic frame. At this time, the rolling body is locked by the side plates on both sides of the baffle on the next elastic frame, which greatly improves the safety of the one-way bearing.

[0031] Compared with the one-way bearing with a retainer, the elastic frame of the present invention is detachable. When installing the bearing, the rolling body can be easily placed in the elastic frame by lightly pressing the elastic frame. The rolling body and the elastic frame are installed in sequence to complete the assembly process. Compared with the one-way bearing with a retainer, the installation difficulty is greatly reduced, and the production efficiency is greatly improved.

[0032] The use of all-metal parts eliminates the fragile plastic cage, prolongs the service life of the one-way bearing, expands the application range of the one-way bearing, and is more suitable for use in extreme high and low temperatures and high speeds. At the same time, it can be made into a one-way bearing with a smaller structure.

Claims

1. A cageless one-way bearing, comprising a bearing outer ring (101), an elastic frame (301), a retaining ring (201), a rolling element (5) and a bearing inner ring (4), characterized in that: The bearing outer ring (101) is installed concentrically with the bearing inner ring (4); a plurality of wedge blocks (103) are provided on the inner side of the bearing outer ring (101); the wedge blocks (103) cooperate with the rolling body (5); a plurality of elastic frames (301) are installed between the bearing outer ring (101) and the bearing inner ring (4); the elastic frames (301) include a baffle (302), a first spring plate (303) and a second spring plate (304); spring blocks (305) are provided at both ends of the baffle (302); The lower end of the plate (302) is connected to one end of the first spring plate (303) through the spring block (305), the other end of the first spring plate (303) is connected to the second spring plate (304), the second spring plate (304) cooperates with the rolling body (5), retaining rings (201) are installed at both ends of the bearing outer ring (101), the retaining ring (201) is provided with a through groove (205), and the spring block (305) cooperates with the through groove (205) to limit the position and angle of the elastic frame (301); Side plates (306) are provided on both sides of the baffle (302), and the side plates (306) are arc-shaped.

2. The one-way bearing without a cage according to claim 1, characterized in that: The inner side of the bearing outer ring (101) is also provided with a first groove (102), a second groove (104) and a first protrusion (105).

3. The one-way bearing without a cage according to claim 2, characterized in that: The retaining ring (201) is also provided with a third groove (202), a second protrusion (203) and a wedge-shaped groove (204).

4. The one-way bearing without a cage according to claim 3, characterized in that: The first groove (102) cooperates with the second protrusion (203), the second groove (104) cooperates with the wedge-shaped groove (204), and the first protrusion (105) cooperates with the third groove (202).

5. The one-way bearing without a cage according to claim 2, characterized in that: The gap between the top end of the wedge block (103) and the outer surface of the bearing inner ring (4) is smaller than the diameter of the rolling body (5), the gap between the bottom end of the wedge block (103) and the outer surface of the bearing inner ring (4) is larger than the diameter of the rolling body (5), and the gap between the first protrusion (105) and the outer surface of the bearing inner ring (4) is smaller than the diameter of the rolling body (5).

6. The one-way bearing without a cage according to claim 1, characterized in that: The spring block (305) is in an arc shape.

7. The one-way bearing without a cage according to claim 1, characterized in that: All parts are made of metal.

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