Ceramic ball bearing

Abstract

The utility model belongs to the technical field of bearings, and particularly discloses a ceramic ball bearing which comprises a bearing outer ring, a bearing inner ring and a ceramic ball, the bearing outer ring is arranged outside the bearing inner ring, the bearing outer ring and the bearing inner ring are coaxially installed, cambered surface ball grooves are formed in the inner surface of the bearing outer ring and the outer surface of the bearing inner ring, and the ceramic ball is arranged in the cambered surface ball grooves. The ceramic balls are connected between the cambered surface ball grooves of the bearing outer ring and the bearing inner ring in a rolling mode, and the annular dustproof covers are movably connected to the two sides between the bearing outer ring and the bearing inner ring. The two sides of the bearing outer ring and the two sides of the bearing inner ring are sealed through the arrangement of the annular dustproof covers, the annular dustproof covers are movably connected with the bearing outer ring and the bearing inner ring, normal use of the bearing is not affected, overflow of lubricating grease can be reduced or avoided, and the balls made of ceramic materials have good high-temperature resistance. The two sides of the bearing outer ring and the two sides of the bearing inner ring are sealed, so that the dustproof effect can be achieved, and the ceramic balls operate stably.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a ceramic ball bearing. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support a rotating mechanical body, reduce the friction coefficient during its movement, and ensure its rotational accuracy.

[0003] The life of a rolling bearing is defined by the number of revolutions (or the number of working hours at a certain rotational speed): within this life, no initial fatigue damage (spalling or defect) should occur on any bearing ring or rolling element of the bearing. However, it can be clearly seen both in laboratory tests and in actual use that for bearings with the same appearance under the same working conditions, the actual lives are very different. In addition, there are several other differently defined "lives" of bearings, one of which is the so-called "working life", which represents the actual life that a certain bearing can reach before damage, and the damage is usually not caused by fatigue, but by wear, corrosion, seal damage, etc.

[0004] Currently, the bearing balls are usually made of metal and are in an exposed state. During actual use, lubricating grease is usually applied to the balls to play a lubricating role. However, the exposed bearing balls are prone to dust ingress, which blocks their rolling, and the exposed balls are prone to the detachment of the lubricating grease during movement. Moreover, as the use progresses, the heat generated by friction is likely to cause the balls to deform, affecting normal use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a ceramic ball bearing to solve the problems proposed in the above background art that the exposed balls are prone to the detachment of the lubricating grease during movement, and the heat generated by friction is likely to cause the balls to deform, affecting normal use.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a ceramic ball bearing, comprising: an outer bearing ring, an inner bearing ring, and ceramic balls;

[0007] Wherein, the outer bearing ring is arranged outside the inner bearing ring, and the outer bearing ring and the inner bearing ring are coaxially installed. Arc-shaped ball grooves are provided on the inner surface of the outer bearing ring and the outer surface of the inner bearing ring, and the ceramic balls are rollingly connected between the arc-shaped ball grooves of the outer bearing ring and the inner bearing ring;

[0008] It further includes an annular dust cover, the annular dust cover is movably connected to both sides between the outer bearing ring and the inner bearing ring, and lubricating grease is applied inside the arc-shaped ball grooves and outside the ceramic balls.

[0009] Preferably, one side between the arc-shaped ball grooves on the upper and lower sides is the installation part. The distance between the installation parts is not less than the diameter of the ceramic ball, and the distance between the arc-shaped ball grooves on the upper and lower sides is less than the diameter of the ceramic ball. A blocking clamping piece is arranged in the installation part. The blocking clamping piece is fixedly connected to the opposite side walls of the bearing outer ring and the bearing inner ring. Installation grooves are formed on the opposite side walls of the two blocking clamping pieces and on the opposite side walls of the bearing outer ring and the bearing inner ring. The inner and outer edges of the annular dust cover are respectively embedded in the corresponding installation grooves.

[0010] Preferably, the annular dust cover includes an installation part dust cover and a fixed dust cover. The installation part dust cover is installed in the installation grooves at the two blocking clamping pieces, and the fixed dust cover is installed in the installation grooves on the opposite side walls of the bearing outer ring and the bearing inner ring.

[0011] Preferably, a first curled edge is provided at the outer edge of the outer wall of the installation part dust cover, and a second curled edge is provided at the outer edge of the outer wall of the fixed dust cover. A first clamping flange is provided at the inner edge of the inner wall of the installation part dust cover, and a second clamping flange is provided at the inner edge of the inner wall of the fixed dust cover. The first curled edge, the second curled edge, the first clamping flange, and the second clamping flange are connected in the corresponding installation grooves.

[0012] Preferably, a grease filling port is provided on the installation part dust cover, and a plug is detachably connected to the grease filling port.

[0013] Preferably, the opposite side walls of the installation part dust cover and the fixed dust cover are respectively provided with a first grease spreading convex rib and a second grease spreading convex rib.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] Through the arrangement of the annular dust cover, both sides of the bearing outer ring and the bearing inner ring are sealed. And the annular dust cover is movably connected with the bearing outer ring and the bearing inner ring, which does not affect the normal use of the bearing, and can reduce or avoid the overflow of grease. The ceramic balls have good high-temperature resistance. By sealing both sides of the bearing outer ring and the bearing inner ring, it can play a role in dust prevention and make the ceramic balls run smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the present utility model after removing the annular dust cover;

[0018] Figure 3 is a schematic side sectional structural diagram of the present utility model;

[0019] Figure 4 is of the present utility modelFigure 3 Schematic diagram of the enlarged structure of part A;

[0020] Figure 5 This is a utility model Figure 3 Schematic diagram of the enlarged structure of part B.

[0021] In the figure: 1. Outer ring of bearing; 2. Inner ring of bearing; 3. Ceramic ball; 4. Blocking and clamping piece; 5. Dust cover for installation part; 51. First crimping edge; 52. First clamping flange; 53. First grease spreading convex rib; 54. Grease replenishment port; 6. Fixed dust cover; 61. Second crimping edge; 62. Second clamping flange; 63. Second grease spreading convex rib. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Embodiment

[0024] Please refer to Figures 1-5 , the present utility model provides a technical solution: a ceramic ball bearing, which is characterized in that it includes: an outer ring of bearing 1, an inner ring of bearing 2, and a ceramic ball 3;

[0025] Among them, the outer ring of bearing 1 is arranged outside the inner ring of bearing 2, and the outer ring of bearing 1 and the inner ring of bearing 2 are coaxially installed. The inner surface of the outer ring of bearing 1 and the outer surface of the inner ring of bearing 2 are both provided with arc-shaped ball grooves. The ceramic ball 3 is rotatably connected between the arc-shaped ball grooves of the outer ring of bearing 1 and the inner ring of bearing 2. It also includes an annular dust cover, and the annular dust cover is movably connected to both sides between the outer ring of bearing 1 and the inner ring of bearing 2. Grease is coated on the arc-shaped ball grooves and outside the ceramic ball 3.

[0026] Analysis of the above content: During use, the ceramic ball 3 is placed in the arc-shaped ball groove between the bearing outer ring 1 and the bearing inner ring 2. According to the usage requirements, a cage (a commonly used bracket that supports the outer periphery of the ball in a bearing currently) can be installed outside the ceramic ball 3. The outer edge of the annular dust cover is fixedly connected to the bearing outer ring 1, and the inner edge of the annular dust cover is movably connected to the bearing inner ring 2. This connection method can prevent the grease from detaching while not affecting the relative rotation between the bearing outer ring 1 and the bearing inner ring 2. Embodiment

[0027] Please refer to Figures 1-5 , the present utility model provides a technical solution based on Embodiment 1: One side between the arc-shaped ball grooves on the upper and lower sides is an installation part, the distance between the installation parts is not less than the diameter of the ceramic ball 3, the distance between the arc-shaped ball grooves on the upper and lower sides is less than the diameter of the ceramic ball 3, a blocking and clamping piece 4 is arranged in the installation part, the blocking and clamping piece 4 is fixedly connected to the opposite side walls of the bearing outer ring 1 and the bearing inner ring 2, installation grooves are opened on the opposite side walls of the two blocking and clamping pieces 4 and the opposite side walls of the bearing outer ring 1 and the bearing inner ring 2, and the inner and outer edges of the annular dust cover are respectively embedded in the corresponding installation grooves.

[0028] Analysis of the above content: As Figure 3 , 4 shown, the blocking and clamping piece 4 is located on the left opposite side wall between the bearing outer ring 1 and the bearing inner ring 2 (that is, the left side of the inner surface of the bearing outer ring 1 and the left side of the outer surface of the bearing inner ring 2). The blocking and clamping piece 4 can be connected to the bearing outer ring 1 and the bearing inner ring 2 by welding. After connection, it forms a block for the ceramic ball 3 to prevent the ceramic ball 3 from falling from the left side between the bearing outer ring 1 and the bearing inner ring 2. The installation grooves are located on the right side of the opposite side walls of the two blocking and clamping pieces 4 and the opposite side walls of the bearing outer ring 1 and the bearing inner ring 2, and the annular dust cover is correspondingly embedded in the installation grooves at the corresponding positions. Embodiment

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution based on Embodiment 2: The annular dust cover includes an installation part dust cover 5 and a fixed dust cover 6. The installation part dust cover 5 is installed in the installation grooves at the two blocking and clamping pieces 4, and the fixed dust cover 6 is installed in the installation grooves on the opposite side walls of the bearing outer ring 1 and the bearing inner ring 2.

[0030] Analysis of the above content: The installation part dust cover 5 and the fixed dust cover 6 are symmetrically arranged in the installation grooves on both sides. Embodiment

[0031] Please refer to Figures 1-5, the present utility model provides a technical solution based on Embodiment 3: A first curled edge 51 is provided at the outer edge of the outer wall of the dust cover 5 of the mounting portion, a second curled edge 61 is provided at the outer edge of the outer wall of the fixed dust cover 6, a first clamping flange 52 is provided at the inner edge of the inner wall of the dust cover 5 of the mounting portion, a second clamping flange 62 is provided at the inner edge of the inner wall of the fixed dust cover 6, and the first curled edge 51, the second curled edge 61, the first clamping flange 52, and the second clamping flange 62 are connected in corresponding mounting grooves.

[0032] Analysis of the above content: The settings of the first curled edge 51 and the second curled edge 61 can be correspondingly embedded in the outer peripheral mounting grooves, the first clamping flange 52 and the second clamping flange 62 are embedded in the inner mounting grooves, the first curled edge 51 and the second curled edge 61 are set to be fixedly connected to the mounting grooves, and the first clamping flange 52 and the second clamping flange 62 are movably connected to the mounting grooves, so that the outer ring 1 and the inner ring 2 of the bearing can rotate relative to each other. Embodiment

[0033] Please refer to Figures 1-5 , the present utility model provides a technical solution based on Embodiment 3 or Embodiment 4: A grease replenishment port 54 is provided on the dust cover 5 of the mounting portion, and a plug is detachably connected to the grease replenishment port 54.

[0034] Analysis of the above content: During use, when grease overflows and grease needs to be replenished inside, it can be replenished through the grease replenishment port 54. After that, the grease replenishment port 54 is sealed with a plug, and the plug can be a screw, a rubber plug, etc. Embodiment

[0035] Please refer to Figures 1-5 , the present utility model provides a technical solution based on Embodiment 3 or Embodiment 4: First grease scraping ridges 53 and second grease scraping ridges 63 are respectively provided on the opposite side walls of the dust cover 5 of the mounting portion and the fixed dust cover 6.

[0036] Analysis of the above content: After the bearing operates for a period of time, the grease is squeezed and centrifuged by the ceramic balls 3, etc., causing the grease to disperse around. Through the settings of the first grease scraping ridges 53 and the second grease scraping ridges 63, the grease is dispersed and blocked to a certain extent, making the dispersion of the grease relatively uniform.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ceramic ball bearing, characterized in that: include: Bearing outer ring (1), bearing inner ring (2), ceramic ball (3); The bearing outer ring (1) is arranged outside the bearing inner ring (2), and the bearing outer ring (1) and the bearing inner ring (2) are coaxially mounted, and the inner surface of the bearing outer ring (1) and the outer surface of the bearing inner ring (2) are both provided with arc-surface ball grooves, and the ceramic balls (3) are rollingly connected between the arc-surface ball grooves of the bearing outer ring (1) and the bearing inner ring (2); It also includes an annular dust cover, which is movably connected to both sides between the bearing outer ring (1) and the bearing inner ring (2), and the arc surface ball groove and the outside of the ceramic ball (3) are coated with grease; One side between the arc surface ball grooves on the upper and lower sides is a mounting portion, the spacing between the mounting portions is not less than the diameter of the ceramic ball (3), the spacing between the arc surface ball grooves on the upper and lower sides is less than the diameter of the ceramic ball (3), a blocking clamping sheet (4) is arranged in the mounting portion, the blocking clamping sheet (4) is fixedly connected to the mutually facing side walls of the bearing outer ring (1) and the bearing inner ring (2), the mutually facing side walls of the two blocking clamping sheets (4) and the mutually facing side walls of the bearing outer ring (1) and the bearing inner ring (2) are all provided with mounting grooves, and the inner and outer edges of the annular dust cover are respectively embedded in the corresponding mounting grooves.

2. A ceramic ball bearing according to claim 1, characterized in that: The annular dust cover comprises a mounting dust cover (5) and a fixed dust cover (6), wherein the mounting dust cover (5) is mounted in mounting grooves at two blocking clamping pieces (4), and the fixed dust cover (6) is mounted in mounting grooves on the opposite side walls of the bearing outer ring (1) and the bearing inner ring (2).

3. A ceramic ball bearing according to claim 2, characterized in that: The outer edge of the outer wall of the mounting dust cover (5) is provided with a first curling edge (51), the outer edge of the outer wall of the fixed dust cover (6) is provided with a second curling edge (61), the inner edge of the inner wall of the mounting dust cover (5) is provided with a first snap-fit ​​flange (52), the inner edge of the inner wall of the fixed dust cover (6) is provided with a second snap-fit ​​flange (62), and the first curling edge (51), the second curling edge (61), the first snap-fit ​​flange (52), and the second snap-fit ​​flange (62) are connected in corresponding mounting grooves.

4. A ceramic ball bearing according to claim 2 or 3, characterized in that: The mounting portion dust cover (5) is provided with a grease replenishing port (54), and a sealing plug is detachably connected to the grease replenishing port (54).

5. A ceramic ball bearing according to claim 2 or 3, characterized in that: The mutually facing side walls of the mounting dust cover (5) and the fixed dust cover (6) are respectively provided with a first lubricating grease scraping ridge (53) and a second lubricating grease scraping ridge (63).

Images