A self-lubricating precision bearing structure

Abstract

The utility model relates to a self-lubricating precision bearing structure, which belongs to the field of precision bearing technology, and comprises an outer bearing, wherein a fixed plate is fixed at the bottom of the inner cavity wall of the outer bearing, and a plurality of ball retainers are placed on the upper surface of the fixed plate, and the inner bearing is rotatably connected to the inner portion of the ball retainer, and a baffle is attached to the upper surface of the inner cavity wall of the outer bearing. The self-lubricating precision bearing structure rotates the rotating handle to drive the threaded rod to rotate, so that the moving block moves, and the moving block moves away from the fixed block, and the moving plate is reset, and the plug rod is driven to move together, so that the plug rod is away from the oil inlet hole, so as to facilitate the oiling of the ball retainer through the oil inlet hole. After the oiling is completed, the rotating handle is rotated in the opposite direction to drive the threaded rod to rotate, and the moving block is driven to move, and the moving block drives the fixed block, the moving plate and the plug rod to move together, so that the plug rod is stuck in the inner portion of the oil inlet hole, and the baffle is sealed to prevent oil leakage, and the ball retainer contacts the bearing to provide a self-lubricating effect.

Description

Technical Field

[0001] The utility model relates to the technical field of precision bearings, in particular to a self-lubricating precision bearing structure. 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 precision mechanical components that convert the sliding friction between the running shaft and the shaft seat into rolling friction, thereby reducing friction losses. Rolling bearings generally consist of four parts: an inner ring, an outer ring, rolling elements, and a cage. The function of the inner ring is to cooperate with the shaft and rotate with the shaft.

[0003] For example, a Chinese patent (publication number: CN216009242U) discloses a high-precision spindle bearing, comprising an outer ring, an inner ring and bearing balls, characterized in that the outer ring is arranged on the outside of the inner ring, a plurality of the bearing balls are evenly distributed between the outer ring and the inner ring, a plurality of oil outlet holes are evenly distributed radially inside the inner ring with the center of the inner ring as the center, the outer end of each of the oil outlet holes is connected to the outer side surface of the inner ring, and both sides of the inner end of each of the oil outlet holes are connected with oil guide holes, and the outer ends of the oil guide holes on both sides are connected to oil filling holes. The high-precision spindle bearing provided by the utility model is first injected with lubricating oil into the oil filling hole when in use, and the lubricating oil will be introduced into the oil storage cavity at this time. When the bearing starts to rotate, the lubricating oil in the oil storage cavity will be guided from the inside of the oil guide hole to the inside of the oil outlet hole, and then flow out of the outside of the inner ring, so that self-lubrication operation can be achieved, which is more practical.

[0004] The above-mentioned high-precision spindle bearing still has certain shortcomings. Lubricating oil is first injected into the oil filling hole. At this time, the lubricating oil will be introduced into the oil storage chamber. When the bearing starts to rotate, the lubricating oil in the oil storage chamber will be guided to the inside of the oil outlet hole through the oil guide hole, and then flow out of the outside of the inner ring, so as to achieve self-lubricating operation. However, during the use of the bearing, part of the lubricating oil will flow out through the oil outlet hole, thereby affecting the self-lubricating effect of the bearing and causing the bearing precision to be reduced. Therefore, the present application proposes a self-lubricating precision bearing structure to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a self-lubricating precision bearing structure, which has the advantages of good lubrication effect, etc., and solves the problem of poor lubrication effect of the existing self-lubricating precision bearing structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-lubricating precision bearing structure, comprising an outer bearing, a fixing plate is fixed to the bottom of the inner cavity wall of the outer bearing, a plurality of ball retainers are placed on the upper surface of the fixing plate, an inner bearing is rotatably connected inside the ball retainer, a baffle is attached to the upper surface of the inner cavity wall of the outer bearing, a lubrication mechanism is provided on the upper surface of the baffle, and a mounting mechanism for fixing the baffle is provided inside the outer bearing;

[0007] The lubrication mechanism includes a box body fixed on the upper surface of the baffle, a threaded hole is opened on the right side of the box body, a threaded rod is connected to the internal thread of the threaded hole, and a moving block is rotatably connected to the left side of the threaded rod through a bearing seat, a plurality of limit rods are fixed to the lower surface of the inner cavity of the box body, a first spring is sleeved on the outer surface of the limit rod, and a moving plate is slidably connected to the outer surfaces of the plurality of limit rods, a fixed block is fixed to the upper surface of the moving plate, and an insertion rod is fixed to the lower surface of the moving plate, and the lubrication mechanism also includes an oil inlet hole opened on the upper surface of the baffle.

[0008] Furthermore, the upper surface of the first spring is fixed to the lower surface of the moving plate, and the lower surface of the first spring is fixed to the lower surface of the inner cavity of the box body.

[0009] Furthermore, the movable block and the fixed block are both trapezoidal in shape, and the movable block abuts against the fixed block.

[0010] Furthermore, the insertion rod is slidably connected to the inside of the oil inlet hole, a slider is fixed to the upper surface of the moving block, a sliding rod is fixed to the right side of the inner cavity of the box body, and the sliding rod is slidably connected to the outer surface of the sliding rod.

[0011] Furthermore, the mounting mechanism includes two cavities opened inside the outer bearing, a plurality of fixing rods are fixed between the left and right sides of the inner cavity of the cavity, a second spring is sleeved on the outer surface of the fixing rod, a movable plate is slidably connected to the outer surfaces of the plurality of fixing rods, a plurality of clamping rods are fixed on the opposite sides of the two movable plates, a pull rod is fixed on the opposite sides of the two movable plates, and the mounting mechanism also includes a plurality of clamping grooves opened on the outer surface of the baffle.

[0012] Furthermore, the opposite sides of the two left and right second springs are respectively fixed to the opposite sides of the two movable plates, and the opposite sides of the two left and right second springs are respectively fixed to the opposite sides of the inner cavities of the two cavities.

[0013] Furthermore, the clamping rod is slidably connected to the inside of the clamping slot, and the pull rod is L-shaped.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The self-lubricating precision bearing structure, through the lubrication mechanism, turns the rotating handle to drive the threaded rod to rotate, so that the moving block moves, the moving block will be away from the fixed block, the moving plate is reset, and the plug rod is driven to move together, so that the plug rod is away from the oil inlet hole, so that it is convenient to refuel the ball retainer through the oil inlet hole. After the oil is filled, the rotating handle is rotated in the opposite direction to drive the threaded rod to rotate, drive the moving block to move, and the moving block drives the fixed block, the moving plate and the plug rod to move together, so that the plug rod is stuck in the inside of the oil inlet hole, the baffle is sealed to prevent oil leakage, and the ball retainer contacts the bearing to provide a self-lubricating effect.

[0016] 2. The self-lubricating precision bearing structure installs the ball cage between the outer bearing and the inner bearing through the installation mechanism, pulls the pull rod, drives the movable plate and the clamping rod to move together and squeeze the second spring, puts the baffle on the ball cage, releases the pull rod, resets the movable plate, and makes the clamping rod clamp into the inside of the clamping slot to fix the baffle and improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a three-dimensional appearance diagram of the outer bearing, inner bearing, mounting mechanism and baffle of the utility model;

[0019] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0020] Figure 4 It is a schematic diagram of the top view of the installation mechanism of the utility model.

[0021] In the figure: 1 outer bearing, 2 fixed plate, 3 lubrication mechanism, 301 housing, 302 threaded hole, 303 threaded rod, 304 moving block, 305 fixed block, 306 limit rod, 307 moving plate, 308 first spring, 309 plug rod, 310 oil inlet hole, 4 inner bearing, 5 ball retainer, 6 mounting mechanism, 601 cavity, 602 fixed rod, 603 second spring, 604 movable plate, 605 clamping rod, 606 clamping slot, 607 pull rod, 7 baffle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2A self-lubricating precision bearing structure in this embodiment includes an outer bearing 1, a fixing plate 2 is fixed to the bottom of the inner cavity wall of the outer bearing 1, a plurality of ball retainers 5 are placed on the upper surface of the fixing plate 2, an inner bearing 4 is rotatably connected to the inner surface of the ball retainer 5, the outer bearing 1 and the inner bearing 4 are kept rotating by the balls in the ball retainer 5, a baffle 7 is attached to the upper surface of the inner cavity wall of the outer bearing 1, a lubrication mechanism 3 is provided on the upper surface of the baffle 7, the baffle 7 and the fixing plate 2 cooperate to seal the ball retainer 5, and the lubricating oil is convenient for self-lubrication thereof, and an installation mechanism 6 for fixing the baffle 7 is provided inside the outer bearing 1, which is used to fix the baffle 7 and improve the sealing effect.

[0024] See also Figure 3 In order to achieve self-lubrication, the lubrication mechanism 3 in this embodiment includes a box body 301 fixed to the upper surface of the baffle 7, a threaded hole 302 is provided on the right side of the box body 301, a threaded rod 303 is connected to the inner thread of the threaded hole 302, a moving block 304 is rotatably connected to the left side of the threaded rod 303 through a bearing seat, and the moving block 304 is driven to move by rotating the threaded rod 303, a plurality of limiting rods 306 are fixed to the lower surface of the inner cavity of the box body 301, a first spring 308 is sleeved on the outer surface of the limiting rod 306, a moving plate 307 is slidably connected to the outer surfaces of the plurality of limiting rods 306, and the moving plate 307 is reset by the first spring 308, a fixed block 305 is fixed to the upper surface of the moving plate 307, and a plug rod 309 is fixed to the lower surface of the moving plate 307, and the lubrication mechanism 3 also includes an oil inlet hole 310 provided on the upper surface of the baffle 7.

[0025] Among them, the movable block 304 and the fixed block 305 are both trapezoidal, and the movable block 304 is in contact with the fixed block 305. The movable block 304 moves to limit the fixed block 305. The insertion rod 309 is slidably connected to the inside of the oil inlet hole 310 to block the oil inlet hole 310 to prevent the lubricating oil from flowing out, thereby affecting the lubrication effect. A rotating handle is fixed to the right side of the threaded rod 303.

[0026] In addition, a slider is fixed to the upper surface of the moving block 304, and a sliding rod is fixed to the right side of the inner cavity of the box body 301. The slider is slidably connected to the outer surface of the sliding rod to increase the stability of the moving block 304 when moving. The upper surface of the first spring 308 is fixed to the lower surface of the moving plate 307, and the lower surface of the first spring 308 is fixed to the lower surface of the inner cavity of the box body 301. The rotating handle drives the threaded rod 303 to rotate in the threaded hole 302, and drives the moving block 304 to move. The moving block 304 will move away from the fixed block 305, and the moving plate 307 will reset under the action of the first spring 308, driving the insertion rod 309 to move together, so that the insertion rod 309 is away from the oil inlet hole 310, which is convenient for refueling the ball retainer 5 through the oil inlet hole 310.

[0027] The lubrication mechanism 3 in this embodiment rotates the rotating handle to drive the threaded rod 303 to rotate, so that the movable block 304 moves, and the movable block 304 will move away from the fixed block 305, and the movable plate 307 will reset, driving the insertion rod 309 to move together, so that the insertion rod 309 is away from the oil inlet hole 310, so as to facilitate the oiling of the ball retainer 5 through the oil inlet hole 310. After the oiling is completed, the rotating handle is rotated in the opposite direction to drive the threaded rod 303 to rotate, and the movable block 304 moves. The movable block 304 drives the fixed block 305, the movable plate 307 and the insertion rod 309 to move together, so that the insertion rod 309 is stuck in the inside of the oil inlet hole 310, the baffle 7 is sealed to prevent oil leakage, and the ball retainer 5 contacts the bearing to provide a self-lubricating effect.

[0028] See also Figure 4 In order to fix the baffle 7, the mounting mechanism 6 in this embodiment includes two cavities 601 opened inside the outer bearing 1, and multiple fixing rods 602 are fixed between the left and right sides of the inner cavity of the cavity 601. The outer surface of the fixing rod 602 is sleeved with a second spring 603, and the outer surfaces of the multiple fixing rods 602 are slidably connected with a movable plate 604, and the movable plate 604 is reset by the second spring 603. Multiple clamping rods 605 are fixed on the opposite sides of the two movable plates 604, and pull rods 607 are fixed on the opposite sides of the two movable plates 604 to facilitate pulling the movable plates 604 to move. The mounting mechanism 6 also includes multiple clamping grooves 606 opened on the outer surface of the baffle 7.

[0029] Among them, the clamping rod 605 is slidably connected to the inside of the clamping groove 606, which is used to install and fix the baffle 7 to improve the sealing of the lubricating oil. The pull rod 607 is L-shaped, and a through hole is opened on the upper surface of the outer bearing 1. The pull rod 607 is slidably connected to the inside of the through hole, which facilitates the pull rod 607 to drive the baffle 7 to move.

[0030] In addition, the opposite sides of the left and right second springs 603 are respectively fixed to the opposite sides of the two movable plates 604, and the opposite sides of the left and right second springs 603 are respectively fixed to the opposite sides of the inner cavities of the two cavities 601. The movable plate 604 is reset by the second spring 603, driving the clamping rod 605 to move together, so that the clamping rod 605 is clamped into the inside of the clamping groove 606, fixing the baffle 7, and improving the sealing effect.

[0031] The mounting mechanism 6 in this embodiment mounts the ball retainer 5 between the outer bearing 1 and the inner bearing 4, pulls the pull rod 607, drives the movable plate 604 and the clamping rod 605 to move together and squeeze the second spring 603, places the baffle 7 on the ball retainer 5, releases the pull rod 607, resets the movable plate 604, and allows the clamping rod 605 to be clamped into the inside of the clamping groove 606, thereby fixing the baffle 7 and improving the sealing effect.

[0032] The working principle of the above embodiment is:

[0033] (1) When it is necessary to add oil to the ball retainer 5 through the oil inlet hole 310, the rotating handle is turned. The rotating handle drives the threaded rod 303 to rotate in the threaded hole 302 and drives the moving block 304 to move. The moving block 304 will move away from the fixed block 305. The moving plate 307 will reset under the action of the first spring 308, driving the insertion rod 309 to move together, so that the insertion rod 309 is away from the oil inlet hole 310, which is convenient for adding oil to the ball retainer 5 through the oil inlet hole 310. After the oil is filled, the rotating handle is turned in the opposite direction. The rotating handle drives the threaded rod 303 to rotate and drives the moving block 304 to move. The moving block 304 pushes the fixed block 305 and the moving plate 307 to move together and squeeze the first spring 308. The moving plate 307 drives the insertion rod 309 to move, so that the insertion rod 309 is stuck in the inside of the oil inlet hole 310, which is sealed to prevent oil leakage. The ball retainer 5 contacts the bearing to provide a self-lubricating effect.

[0034] (2) After the ball retainer 5 is installed between the outer bearing 1 and the inner bearing 4, the pull rod 607 is pulled. The pull rod 607 drives the movable plate 604 to slide on the outer surface of the fixed rod 602 and squeeze the second spring 603. The movable plate 604 drives the clamping rod 605 to move together. At this time, the baffle 7 is placed on the ball retainer 5, and the pull rod 607 is released. The movable plate 604 is reset under the action of the second spring 603, driving the clamping rod 605 to move together, so that the clamping rod 605 is clamped into the inside of the clamping groove 606, fixing the baffle 7 and improving the sealing effect.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating precision bearing structure, comprising an outer bearing (1), characterized in that: A fixing plate (2) is fixed to the bottom of the inner cavity wall of the outer bearing (1), a plurality of ball retainers (5) are placed on the upper surface of the fixing plate (2), an inner bearing (4) is rotatably connected inside the ball retainer (5), a baffle (7) is attached to the upper surface of the inner cavity wall of the outer bearing (1), a lubrication mechanism (3) is provided on the upper surface of the baffle (7), and a mounting mechanism (6) for fixing the baffle (7) is provided inside the outer bearing (1); The lubricating mechanism (3) comprises a box body (301) fixed to the upper surface of the baffle (7); a threaded hole (302) is provided on the right side of the box body (301); a threaded rod (303) is connected to the inner thread of the threaded hole (302); a moving block (304) is rotatably connected to the left side of the threaded rod (303) via a bearing seat; a plurality of limiting rods (306) are fixed to the lower surface of the inner cavity of the box body (301); a first spring (308) is sleeved on the outer surface of the limiting rod (306); a moving plate (307) is slidably connected to the outer surfaces of the plurality of limiting rods (306); a fixing block (305) is fixed to the upper surface of the moving plate (307); and a plug rod (309) is fixed to the lower surface of the moving plate (307); the lubricating mechanism (3) further comprises an oil inlet hole (310) provided on the upper surface of the baffle (7).

2. A self-lubricating precision bearing structure according to claim 1, characterized in that: The upper surface of the first spring (308) is fixed to the lower surface of the moving plate (307), and the lower surface of the first spring (308) is fixed to the lower surface of the inner cavity of the box body (301).

3. A self-lubricating precision bearing structure according to claim 1, characterized in that: The movable block (304) and the fixed block (305) are both trapezoidal in shape, and the movable block (304) is in abutment with the fixed block (305).

4. A self-lubricating precision bearing structure according to claim 1, characterized in that: The insertion rod (309) is slidably connected to the inside of the oil inlet hole (310), a slider is fixed to the upper surface of the moving block (304), a sliding rod is fixed to the right side of the inner cavity of the box body (301), and the sliding rod is slidably connected to the outer surface of the sliding rod.

5. A self-lubricating precision bearing structure according to claim 1, characterized in that: The mounting mechanism (6) comprises two cavities (601) opened inside the outer bearing (1), a plurality of fixing rods (602) are fixed between the left and right sides of the inner cavity of the cavity (601), the outer surface of the fixing rod (602) is sleeved with a second spring (603), the outer surfaces of the plurality of fixing rods (602) are slidably connected with a movable plate (604), a plurality of clamping rods (605) are fixed on opposite sides of the two movable plates (604), a pull rod (607) is fixed on opposite sides of the two movable plates (604), and the mounting mechanism (6) further comprises a plurality of clamping grooves (606) opened on the outer surface of the baffle (7).

6. A self-lubricating precision bearing structure according to claim 5, characterized in that: The opposite sides of the two left and right second springs (603) are respectively fixed to the opposite sides of the two movable plates (604), and the opposite sides of the two left and right second springs (603) are respectively fixed to the opposite sides of the inner cavities of the two cavities (601).

7. A self-lubricating precision bearing structure according to claim 5, characterized in that: The clamping rod (605) is slidably connected to the inside of the clamping slot (606), and the pull rod (607) is L-shaped.

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