Self-locking bearing

Abstract

The utility model provides a self-locking type bearing which comprises an inner ring, the inner ring is arranged in an outer ring, a plurality of balls are evenly arranged between the inner ring and the outer ring, two ends of the inner ring are sleeved with locking rings used for limiting the positions of the balls, the locking rings are contacted with the inner wall of the outer ring, a plurality of blind holes are evenly formed in the inner surfaces of the locking rings, and the blind holes are communicated with the inner ring. A plurality of outer penetrating holes aligned with the blind holes are annularly formed in the outer surfaces of the two ends of the outer ring at equal intervals, column rods are inserted into the outer penetrating holes, one ends of the column rods penetrate through the outer penetrating holes and extend into the blind holes, the outer ring is inserted into a protective sleeve, and the protective sleeve is fixedly connected with the outer ring through screws. The utility model has the beneficial effects that the use amount of screws is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a self-locking bearing, belonging to the technical field of bearings. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Rolling bearings are generally composed of four parts: an outer ring, an inner ring, rolling elements, and a cage. In order to prevent the rolling bearings from being dislocated due to radial forces, two sets of locking rings are installed between the outer ring and the inner ring to limit the position of the rolling elements. The locking rings are connected and fixed to the outer ring using multiple screws. The multiple screws disperse the force acting between the outer ring and the locking ring. However, the use of multiple screws requires the use of tools such as electric screwdrivers for assembly. This process has a slow assembly efficiency, so it is necessary to design a self-locking bearing that improves assembly efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a self-locking bearing to solve the problems raised in the above-mentioned background technology. The utility model reduces the amount of screws used and improves assembly efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a self-locking bearing, including an inner ring, the inner ring is arranged in an outer ring, a plurality of balls are evenly arranged between the inner ring and the outer ring, both ends of the inner ring are sleeved with locking rings for limiting the position of the balls, the locking rings are in contact with the inner wall of the outer ring, a plurality of blind holes are evenly opened on the inner surface of the locking ring, the outer surfaces of both ends of the outer ring are annularly provided with a plurality of external through holes aligned with the blind holes at equal intervals, a column rod is inserted in the external through hole, one end of the column rod passes through the external through hole and extends into the blind hole, the outer ring is inserted in a sleeve, and the sleeve is fixed to the outer ring by screws.

[0005] Furthermore, the outer surface of the sleeve is provided with countersunk holes at equal intervals in a circular shape, and the screws pass through the countersunk holes and are connected to the outer circle threads.

[0006] Furthermore, a small hole aligned with the countersunk hole is formed on the outer surface of the outer ring, a slot is processed on the inner surface of the outer ring, an insert block is inserted in the slot, a round hole aligned with the small hole is formed in the slot, a screw hole matching with the screw is processed on the side of the insert block facing the round hole, and the screw passes through the small hole and the round hole and is threadedly connected in the screw hole.

[0007] Furthermore, the cross section of the slot is rectangular, and the cross section of the plug block is rectangular.

[0008] Furthermore, a first annular groove is machined on the inner surface of the outer ring, the first annular groove matches with a second annular groove, the second annular groove is machined on the outer surface of the inner ring, a plurality of balls are evenly arranged in the channel formed by the first annular groove and the second annular groove, and a first arcuate surface matching with the surface of the ball is machined on a side of the insert facing the ball.

[0009] Furthermore, a rubber sheet is adhered to one side of the inserting block, and the rubber sheet is in contact with the inner wall of the slot.

[0010] Furthermore, the outer diameter of the outer ring is the same as the inner diameter of the sleeve, and the inner diameter of the locking ring is the same as the outer diameter of the inner ring.

[0011] Furthermore, the length of the column is the same as the sum of the blind hole depth and the outer through hole depth, and one end of the column close to the sheath is processed with a second arc surface that matches the inner wall of the sheath.

[0012] Beneficial effects of the utility model:

[0013] 1. Place the locking ring between the inner ring and the outer ring, and align the outer through-hole with the blind hole. Insert the column in the channel formed by the outer through-hole and the blind hole, and then put the sleeve on the outer ring. At this time, the sleeve plays a role in limiting the position of the column to prevent the column from falling from the channel formed by the blind hole and the outer through-hole. Use screws to limit the relative position of the sleeve and the outer ring to complete the assembly of the locking ring. Under the action of the locking ring, the displacement of the ball is increased, and the stability of the structure is improved. Compared with the method of using multiple screws to connect the locking ring and the outer ring, the amount of screws used is reduced, and the assembly efficiency is improved. Under the action of multiple columns, the force acting on the locking ring is dispersed in multiple areas of the outer ring.

[0014] 2. Insert the plug into the slot to connect the plug with the outer ring. At this time, the screw hole is aligned with the round hole and the small hole. The screw passes through the channel formed by the small hole and the round hole and is screwed into the screw hole to complete the assembly of the sleeve and the outer ring. When the screw hole is damaged due to disassembly of the screw, replace the plug without replacing the outer ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a structural schematic diagram of a self-locking bearing of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of the ball and the inner ring in a self-locking bearing of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the outer ring of a self-locking bearing of the utility model;

[0019] Figure 4 This is a three-dimensional diagram of a locking ring in a self-locking bearing of the utility model;

[0020] Figure 5 This is a schematic diagram of the assembly of a column rod, an inner ring and an outer ring in a self-locking bearing of the utility model;

[0021] Figure 6 This is a three-dimensional diagram of a sleeve in a self-locking bearing of the utility model;

[0022] Figure 7 This is a schematic diagram of the assembly of an insert block and an outer ring in a self-locking bearing of the utility model;

[0023] In the figure: 1-outer ring, 2-locking ring, 3-inner ring, 4-screw, 5-sheath, 6-ball, 7-second annular groove, 8-outer through hole, 9-small hole, 10-first annular groove, 11-screw hole, 12-blind hole, 13-column, 14-countersunk hole, 15-insert block. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] See also Figure 1-Figure 3 The utility model provides a technical solution: a self-locking bearing, including an inner ring 3, the inner ring 3 is arranged in an outer ring 1, a plurality of balls 6 are evenly arranged between the inner ring 3 and the outer ring 1, a first annular groove 10 is processed on the inner surface of the outer ring 1, the first annular groove 10 cooperates with the second annular groove 7, and the second annular groove 7 is processed on the outer surface of the inner ring 3, so that the plurality of balls 6 are evenly arranged in the channel formed by the first annular groove 10 and the second annular groove 7, so as to limit the position of the balls 6.

[0026] See also Figure 1-Figure 7, both ends of the inner ring 3 are sleeved with locking rings 2 for limiting the position of the ball 6, the locking ring 2 is in contact with the inner wall of the outer ring 1, the inner diameter of the locking ring 2 is the same as the outer diameter of the inner ring 3, a plurality of blind holes 12 are evenly opened on the inner surface of the locking ring 2, and a plurality of outer through holes 8 aligned with the blind holes 12 are opened in annular shape and equidistantly on the outer surfaces of both ends of the outer ring 1, a column 13 is inserted in the outer through hole 8, one end of the column 13 passes through the outer through hole 8 and extends into the blind hole 12, the outer ring 1 is inserted in the sleeve 5, the outer diameter of the outer ring 1 is the same as the inner diameter of the sleeve 5, the sleeve 5 is connected and fixed to the outer ring 1 by screws 4, the length of the column 13 is the same as the sum of the depth of the blind hole 12 and the depth of the outer through hole 8, and the end of the column 13 close to the sleeve 5 is processed with a second arc surface matching the inner wall of the sleeve 5, 2 is placed between the inner ring 3 and the outer ring 1, and the outer through hole 8 is aligned with the blind hole 12, the column 13 is inserted into the channel formed by the outer through hole 8 and the blind hole 12, and then the sleeve 5 is sleeved on the outer ring 1. At this time, the sleeve 5 plays a role in limiting the position of the column 13 to prevent the column 13 from falling from the channel formed by the blind hole 12 and the outer through hole 8. The relative position of the sleeve 5 and the outer ring 1 is limited by the screw 4, thereby completing the assembly of the locking ring 2. Under the action of the locking ring 2, the displacement of the ball 6 is increased, and the stability of the structure is improved. Compared with the method of connecting the locking ring 2 and the outer ring 1 with multiple screws 4, the use of screws 4 is reduced, and the assembly efficiency is improved. Moreover, under the action of multiple columns 13, the force acting on the locking ring 2 is dispersed in multiple areas of the outer ring 1.

[0027] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 The outer surface of the sleeve 5 is annularly provided with countersunk holes 14 at equal intervals, the outer surface of the outer ring 1 is provided with small holes 9 aligned with the countersunk holes 14, the inner surface of the outer ring 1 is processed with a slot, the cross section of the slot is rectangular, an insert block 15 is inserted in the slot, the cross section of the insert block 15 is rectangular, the side of the insert block 15 facing the ball 6 is processed with a first arc surface matching the surface of the ball 6, a round hole aligned with the small hole 9 is provided in the slot, the side of the insert block 15 facing the round hole is processed with a screw hole 11 matching the screw 4, the screw 4 passes through the small hole 9 and the round hole and then threads Connected in the screw hole 11, insert the plug 15 in the slot to realize the plug-in connection between the plug 15 and the outer ring 1. At this time, the screw hole 11 is aligned with the round hole and the small hole 9, so that the screw 4 passes through the channel formed by the small hole 9 and the round hole and is screwed into the screw hole 11 to complete the assembly of the sheath 5 and the outer ring 1. When the screw hole 11 is damaged due to the disassembly of the screw 4, the plug 15 can be replaced without replacing the outer ring 1. A rubber sheet is attached to one side of the plug 15. When the plug 15 is inserted into the slot, the rubber sheet fits with the inner wall of the slot to prevent the plug 15 from falling out of the slot at will.

[0028] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-locking bearing, comprising an inner ring (3), characterized in that: The inner ring (3) is arranged inside the outer ring (1), and a plurality of balls (6) are evenly arranged between the inner ring (3) and the outer ring (1). Locking rings (2) for limiting the position of the balls (6) are sleeved at both ends of the inner ring (3), and the locking rings (2) are in contact with the inner wall of the outer ring (1). A plurality of blind holes (12) are evenly arranged on the inner surface of the locking ring (2). The outer surfaces of both ends of the outer ring (1) are annularly provided with a plurality of external through holes (8) aligned with the blind holes (12) at equal intervals, and a column (13) is inserted into the external through hole (8), and one end of the column (13) passes through the external through hole (8) and extends into the blind hole (12). The outer ring (1) is inserted into a sleeve (5), and the sleeve (5) is connected and fixed to the outer ring (1) by screws (4).

2. A self-locking bearing according to claim 1, characterized in that: The outer surface of the sleeve (5) is provided with countersunk holes (14) at equal intervals in a circular shape, and the screws (4) pass through the countersunk holes (14) and are threadedly connected to the outer ring (1).

3. A self-locking bearing according to claim 1, characterized in that: The outer surface of the outer ring (1) is provided with a small hole (9) aligned with the countersunk hole (14); the inner surface of the outer ring (1) is processed with a slot, an insert block (15) is inserted in the slot, a round hole aligned with the small hole (9) is formed in the slot, a screw hole (11) matched with the screw (4) is processed on a side of the insert block (15) facing the round hole, and the screw (4) passes through the small hole (9) and the round hole and is threadedly connected in the screw hole (11).

4. A self-locking bearing according to claim 3, characterized in that: The slot has a rectangular cross section, and the insert block (15) has a rectangular cross section.

5. A self-locking bearing according to claim 3, characterized in that: The inner surface of the outer ring (1) is processed with a first annular groove (10), the first annular groove (10) matches with a second annular groove (7), the second annular groove (7) is processed on the outer surface of the inner ring (3), a plurality of balls (6) are evenly arranged in the channel formed by the first annular groove (10) and the second annular groove (7), and a first arc surface matching with the surface of the ball (6) is processed on a side of the insert (15) facing the ball (6).

6. A self-locking bearing according to claim 3, characterized in that: A rubber sheet is adhered to one side of the insert block (15), and the rubber sheet is in contact with the inner wall of the slot.

7. A self-locking bearing according to claim 1, characterized in that: The outer diameter of the outer ring (1) is the same as the inner diameter of the sleeve (5), and the inner diameter of the locking ring (2) is the same as the outer diameter of the inner ring (3).

8. The self-locking bearing according to claim 1, characterized in that: The length of the column (13) is equal to the sum of the depth of the blind hole (12) and the depth of the outer through hole (8). The end of the column (13) close to the sheath (5) is processed with a second arc surface that matches the inner wall of the sheath (5).

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