Bearing for stable operation of automatic door machine

Abstract

The utility model provides a bearing for stable operation of an automatic door machine, which relates to the technical field of bearings and comprises an inner ring and an outer ring, a plurality of steel balls are arranged between the inner ring and the outer ring in an annular array manner, the surfaces of the steel balls are jointly sleeved with a retainer, and the surface of the outer wall of the inner ring is provided with two first clamping grooves. According to the utility model, a worker installs the bearing on the rotating shaft of the automatic door machine, and when the shaft starts to rotate, a plurality of steel balls between the outer ring and the inner ring can roll along with the shaft. When the bearing is used, the sealing rings are arranged in the first clamping grooves and the second clamping grooves, so that the sealing rings can shield the space between the inner ring and the outer ring, the connecting positions of the steel balls, the outer ring and the inner ring are sealed, dust is prevented from entering, the surface of the bearing is prevented from being damaged, the bearing is prevented from running stably, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and more specifically, to a bearing for the smooth operation of an automatic door operator. Background Technology

[0002] Bearings are crucial components in machinery, supporting and assisting in the rotation of objects, and are widely used in various machines and equipment. The main function of bearings is to reduce friction, making rotation smoother, while protecting rotating support parts and ensuring the rotating shaft remains in the correct position. There are many types, including linear bearings and rolling bearings. The existing ball bearing with publication number CN115126771A uses a riveted retainer to ensure stable operation. The ball bearing has: an inner ring (2); an outer ring (3) which is coaxially disposed on the outer periphery of the inner ring (2); balls (4) which are sandwiched between the inner ring (2) and the outer ring (3); and a retainer (5) which uses rivets (6) to rivet the axially divided segments (5a, 5b) together to form a single unit, and forms grooves (7) that hold the balls (4) at predetermined intervals along the circumference. The ball bearing is characterized in that the diameter of the balls (4), i.e. the ball diameter (D), and the depth of the inner ring groove (8) formed in the inner ring (2) from the outer diameter surface (10) of the inner ring, i.e. the inner ring groove depth (d), satisfy the relationship that the ball diameter D / inner ring groove depth d>6, and the curvature in the circumferential section of the inner ring groove (8) is in the range of 1.015≤curvature≤1.08.

[0003] However, in this structure, during operation, dust from the surrounding environment is attracted to the connection between the inner and outer rings and the balls of the ball bearing. Dust particles entering this connection accelerate bearing wear. These particles act as abrasives during bearing operation, causing surface damage and resulting in unstable bearing operation and a shortened service life. Utility Model Content

[0004] The main objective of this invention is to provide a bearing for the smooth operation of automatic door operators. This effectively solves the problem in the prior art where, during operation, dust from the surrounding environment is attracted to the connection between the inner and outer rings and the balls of the ball bearing. Dust particles entering this connection accelerate bearing wear. These particles act as abrasives during bearing operation, causing surface damage, resulting in unstable bearing operation and a shortened service life.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bearing for the smooth operation of an automatic door operator includes an inner ring and an outer ring, wherein a plurality of steel balls are arranged in a ring array between the inner ring and the outer ring;

[0007] Each of the steel balls is fitted with a retainer on its surface;

[0008] The outer wall surface of the inner ring has two first slots, and the inner wall surface of the outer ring has two second slots. A sealing component for sealing is provided between adjacent first and second slots.

[0009] Preferably, the sealing assembly includes sealing rings, which are disposed together between corresponding first and second slots.

[0010] Preferably, each of the two sealing rings is provided with an oil draining component on one side of its opposite surface;

[0011] The inner walls of the two first and second slots are provided with clamping components for tightening near the corresponding sealing rings.

[0012] Preferably, the oil draining assembly includes an oil drain hole that extends through the surface of one side of the sealing ring.

[0013] Preferably, the clamping assembly includes a mounting hole, which is formed on the inner wall of the first and second slots near the corresponding sealing rings. A sliding sleeve is fixedly installed in the mounting hole, and a sliding rod is slidably arranged in the sliding sleeve. A top plate is fixedly installed at one end of the sliding rod.

[0014] A limit plate is fixedly installed at the other end of the slide rod, and an elastic element capable of compression and reset is provided on one side of the inner wall of the mounting hole.

[0015] Preferably, the elastic element is a spring.

[0016] Preferably, one side surface of the inner wall of the two first and second card slots is inclined.

[0017] Preferably, both sealing rings have an integrally formed annular protrusion on opposite sides.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) By installing the bearing on the rotating shaft of the automatic door machine, multiple steel balls between the outer and inner rings will roll when the shaft starts to rotate. When the bearing is in use, the sealing ring is set in the first and second slots, which can block the space between the inner and outer rings, thereby sealing the connection between the steel balls and the outer and inner rings, preventing dust from entering, thus avoiding damage to the bearing surface, preventing the bearing from running erratically, and extending its service life.

[0020] (2) When the staff needs to drain the oil from the bearing, push the sealing ring so that the sealing ring moves along the first groove and the second groove. The top plate and the limiting plate move under force, and the spring is compressed. At this time, one end of the drain hole can be separated from the inner wall of the corresponding first groove and the second groove, so that the lubricating oil can be discharged from the drain hole. The oil draining work can be completed without the staff disassembling the sealing ring, thereby improving the oil draining efficiency and simplifying the oil draining process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a bearing for the smooth operation of an automatic door operator according to this utility model;

[0022] Figure 2 This is a front view schematic diagram of the bearing for smooth operation of an automatic door operator according to the present invention;

[0023] Figure 3 This utility model relates to a bearing for the smooth operation of an automatic door operator. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0024] Figure 4 This utility model relates to a bearing for the smooth operation of an automatic door operator. Figure 3 An enlarged schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Inner ring; 2. Outer ring; 3. Steel ball; 4. Cage; 5. First slot; 6. Second slot; 7. Sealing assembly; 701. Sealing ring; 8. Oil drain assembly; 801. Oil drain hole; 9. Tightening assembly; 901. Mounting hole; 902. Sliding sleeve; 903. Sliding rod; 904. Top plate; 905. Limiting plate; 906. Elastic element; 10. Annular protrusion. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0027] like Figures 1-4 As shown, a bearing for the smooth operation of an automatic door operator includes an inner ring 1 and an outer ring 2, with a plurality of steel balls 3 arranged in a ring array between the inner ring 1 and the outer ring 2.

[0028] Each steel ball 3 has a retainer 4 fitted on its surface;

[0029] Two first slots 5 are formed on the outer wall surface of the inner ring 1, and two second slots 6 are formed on the inner wall surface of the outer ring 2. A sealing component 7 for sealing is provided between adjacent first slots 5 and second slots 6.

[0030] The sealing assembly 7 includes a sealing ring 701, which is disposed between the corresponding first groove 5 and second groove 6.

[0031] Workers install the bearing on the rotating shaft of the automatic door operator. When the shaft begins to rotate, multiple steel balls 3 between the outer ring 2 and the inner ring 1 roll accordingly. During bearing use, the sealing ring 701, located in the first groove 5 and the second groove 6, effectively blocks the space between the inner ring 1 and the outer ring 2, thus sealing the connection between the steel balls 3 and the outer and inner rings 2 and 1. This prevents dust from entering, avoids damage to the bearing surface, prevents the bearing from malfunctioning, and extends its service life.

[0032] In another embodiment of this utility model, an oil draining component 8 for draining oil is provided on the opposite side surface of the two sealing rings 701;

[0033] The inner walls of the two first slots 5 and the second slot 6 are provided with a clamping component 9 for clamping on the side near the corresponding sealing ring 701.

[0034] The oil drain assembly 8 includes an oil drain hole 801, which is formed through one side surface of the sealing ring 701.

[0035] The clamping assembly 9 includes a mounting hole 901, which is opened on the inner wall of the first slot 5 and the second slot 6 near the corresponding sealing ring 701. A sliding sleeve 902 is fixedly installed in the mounting hole 901, and a sliding rod 903 is slidably arranged in the sliding sleeve 902. A top plate 904 is fixedly installed at one end of the sliding rod 903.

[0036] A limit plate 905 is fixedly installed at the other end of the slide rod 903, and an elastic element 906 capable of compression and reset is provided on one side of the inner wall of the mounting hole 901.

[0037] The elastic element 906 is a spring.

[0038] When the bearing needs to be drained of oil, the operator pushes the sealing ring 701, causing it to move along the first groove 5 and the second groove 6. The top plate 904 and the limiting plate 905 move under force, and the spring is compressed. At this time, one end of the drain hole 801 can disengage from the inner wall of the corresponding first groove 5 and the second groove 6, allowing the lubricating oil to be discharged from the drain hole 801. The oil draining work can be completed without the operator disassembling the sealing ring 701, which improves the oil draining efficiency and simplifies the oil draining process.

[0039] In another embodiment of this utility model, one side surface of the inner wall of the two first slots 5 and the second slot 6 is an inclined surface.

[0040] By setting one side surface of the inner wall of the first groove 5 and the second groove 6 as an inclined surface, not only is the contact area between the sealing ring 701 and the first groove 5 and the second groove 6 increased, enhancing the positioning effect, but it also facilitates the flow of lubricating oil out of the bearing and prevents it from accumulating.

[0041] In another embodiment of this utility model, both sealing rings 701 are integrally provided with annular protrusions 10 on opposite sides.

[0042] By setting the annular protrusion 10, the contact area between the sealing ring 701 and the inner ring 1 and the outer ring 2 is increased, further enhancing the positioning effect.

[0043] The working principle of a bearing for smooth operation of an automatic door operator:

[0044] In use, the operator installs the bearing on the rotating shaft of the automatic door operator. When the shaft begins to rotate, the multiple steel balls 3 between the outer ring 2 and the inner ring 1 roll accordingly. During bearing use, the sealing ring 701, located in the first groove 5 and the second groove 6, effectively blocks the space between the inner ring 1 and the outer ring 2, thus sealing the connection between the steel balls 3 and the outer and inner rings 2 and 1. This prevents dust from entering, avoids damage to the bearing surface, prevents the bearing from malfunctioning, and extends its service life.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A bearing for smooth operation of an automatic door operator, comprising an inner ring (1) and an outer ring (2), characterized in that: A number of steel balls (3) are arranged in a ring array between the inner ring (1) and the outer ring (2); Each of the steel balls (3) is fitted with a retainer (4) on its surface; The outer wall surface of the inner ring (1) has two first slots (5), and the inner wall surface of the outer ring (2) has two second slots (6). A sealing component (7) for sealing is provided between adjacent first slots (5) and second slots (6). The sealing assembly (7) includes a sealing ring (701), which is disposed between the corresponding first slot (5) and second slot (6); Both of the two sealing rings (701) are provided with oil draining components (8) on opposite sides of their surfaces; The inner walls of the two first slots (5) and the second slots (6) are provided with a clamping assembly (9) for clamping on the side near the corresponding sealing ring (701); The oil drain assembly (8) includes an oil drain hole (801), which is formed through one side surface of the sealing ring (701); The clamping assembly (9) includes a mounting hole (901), which is opened on the inner wall of the first slot (5) and the second slot (6) near the corresponding sealing ring (701). A sliding sleeve (902) is fixedly installed in the mounting hole (901), and a sliding rod (903) is slidably arranged in the sliding sleeve (902). A top plate (904) is fixedly installed at one end of the sliding rod (903). A limiting plate (905) is fixedly installed at the other end of the slide rod (903), and an elastic element (906) capable of compression and reset is provided on one side of the inner wall of the mounting hole (901).

2. The bearing for smooth operation of an automatic door operator according to claim 1, characterized in that: The elastic element (906) is a spring.

3. The bearing for smooth operation of an automatic door operator according to claim 1, characterized in that: The inner wall surface of the two first card slots (5) and the second card slot (6) is inclined.

4. The bearing for smooth operation of an automatic door operator according to claim 2, characterized in that: Both of the sealing rings (701) have an annular protrusion (10) integrally formed on opposite sides.

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