Bearing disassembling and assembling tool

Abstract

The utility model relates to a bearing disassembling and assembling tool which is used for disassembling and assembling a bearing, the bearing comprises an inner ring, an outer ring, a retainer arranged between the inner ring and the outer ring and balls located on the retainer, and the bearing disassembling and assembling tool comprises a base body, a disassembling part and an installing part. The dismounting part comprises a plurality of protrusions arranged in the circumferential direction of the first end of the base body at intervals, and the protrusions are used for abutting against the retainer and avoiding the balls. The mounting part is connected to the second end of the base body, the mounting part comprises an annular boss, the top face of the annular boss is used for containing balls of the bearing, the inner side of the annular boss is used for containing the inner ring, and the outer side of the annular boss is used for being connected with the outer ring in a sleeving mode. By means of the technical scheme, the bearing can be disassembled and assembled conveniently for maintenance, and meanwhile the integrity of all parts in the bearing disassembling and assembling process is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of bearings, and in particular, to a bearing disassembly and assembly tool. Background Art

[0002] The cage of a bearing is a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements and usually guide the rolling elements and keep them in the bearing. There are many types of cages, generally divided into steel cages, non-ferrous metal cages and non-metallic cages (usually plastic cages).

[0003] Compared with traditional metal cages, plastic cages have advantages such as light weight, strong corrosion resistance, and low noise, and are widely used in deep groove ball bearings. In related technologies, deep groove ball bearings with plastic cages are used on roller skates. After a period of use, the bearings need to be disassembled for maintenance. The staff directly pry the plastic cage with a small screwdriver to disassemble the plastic cage. In this process, the plastic cage is easily deformed or damaged, affecting the working accuracy of the bearing after reassembly, and easily generating defects such as noise. Utility Model Content

[0004] The purpose of the present disclosure is to provide a bearing disassembly and assembly tool, which is convenient for disassembly and assembly of bearings for maintenance, while ensuring the integrity of various components during the bearing disassembly and assembly process, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned object, the present disclosure provides a bearing disassembly and assembly tool for disassembling and assembling a bearing, wherein the bearing comprises an inner ring, an outer ring, a retaining frame disposed between the inner ring and the outer ring, and a ball located on the retaining frame, and the bearing disassembly and assembly tool comprises:

[0006] matrix;

[0007] a disassembly portion, comprising a plurality of protrusions arranged at intervals along the circumference of the first end of the base, the plurality of protrusions being used to abut against the retaining frame and avoid the ball; and

[0008] The mounting portion is connected to the second end of the base, and the mounting portion includes an annular boss, the top surface of the annular boss is used to place the ball of the bearing, the inner side of the annular boss is used to place the inner ring, and the outer side of the annular boss is used to sleeve the outer ring.

[0009] Optionally, the mounting portion further comprises a positioning column, wherein the positioning column is located on the inner side of the annular boss, and the positioning column and the annular boss are used to position the inner ring.

[0010] Optionally, the inner wall surface of the annular boss is used to fit against the outer wall surface of the inner ring.

[0011] Optionally, the annular boss includes interconnected thin-walled sections and thick-walled sections, so that the inner wall surface of the outer ring can partially fit the outer wall surface of the thin-walled section, or the inner wall surface of the outer ring can partially fit the outer wall surface of the thick-walled section.

[0012] Optionally, the plurality of protrusions are connected to the first end of the base body via an annular connecting block.

[0013] Optionally, the first end of the base is recessed to form a receiving cavity, the receiving cavity is used to place a wrench, the base is provided with a use groove for plugging with the wrench, and the multiple protrusions are arranged around the opening of the receiving cavity.

[0014] Optionally, the bearing disassembly and assembly tool further includes a ejector pin, the accommodating cavity is used to receive the ejector pin, and the ejector pin is used to remove a dust cover of the bearing located between the inner ring and the outer ring.

[0015] Optionally, the base further includes a gripping portion connecting the first end and the second end, and the use groove is formed in the gripping portion.

[0016] Optionally, the first end and the second end are respectively arranged at two opposite ends of the holding portion, and a radial dimension of the holding portion is smaller than a radial dimension of the first end and the second end.

[0017] Optionally, the first end of the base is detachably connected to a first end cover for covering the detachable portion; and / or,

[0018] The second end of the base is detachably connected to a second end cover for covering the mounting portion.

[0019] Through the above technical solution, the bearing disassembly and assembly tool has a plurality of protrusions arranged at intervals in the circumferential direction along the first end of the base. During the disassembly of the bearing, the plurality of protrusions are simultaneously abutted and pushed against the retaining frame so that the retaining frame is separated from the inner ring and the outer ring, and then the balls are moved to the same side so that the inner ring and the outer ring are separated, thereby completing the disassembly of the bearing. During this process, each part applies force evenly when disassembling the retaining frame, so as to reduce structural damage to the retaining frame, such as deformation or rupture, and ensure the integrity of the retaining frame. Afterwards, during the installation of the bearing, the inner ring and the outer ring can be preliminarily positioned through the annular boss, and then the balls are placed on the annular boss and spread out, and finally the retaining frame is placed between the inner ring and the outer ring and pressed and fixed to complete the installation of the bearing. The installation process is simple and convenient with high efficiency.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of a bearing disassembly and assembly tool provided in an exemplary embodiment of the present disclosure;

[0023] Figure 2 is a schematic diagram of the overall structure of a bearing disassembly and assembly tool provided in an exemplary embodiment of the present disclosure, wherein the first end cover and the second end cover are not shown;

[0024] Figure 3 is a structural schematic diagram of a disassembly portion in an exemplary embodiment of the present disclosure;

[0025] Figure 4 Schematic diagram of the structure of the mounting portion in an exemplary embodiment of the present disclosure.

[0026] Description of Reference Numerals

[0027] 1. Base; 11. First end; 12. Second end; 13. Accommodating cavity; 14. Use groove; 15. Holding portion; 2. Disassembly portion; 21. Protrusion; 3. Installation portion; 31. Annular boss; 311. Thin-walled section; 312. Thick-walled section; 32. Positioning column; 4. Annular connecting block; 5. First end cover; 6. Second end cover. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component; "far" and "near" refer to the distance and nearness of the corresponding component in space relative to another component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] The bearing disassembly and assembly tool in an exemplary embodiment of the present disclosure will be described below with reference to the accompanying drawings.

[0031] Reference Figures 1 to 4The present invention provides a bearing disassembly and assembly tool for disassembling and assembling a bearing, wherein the bearing comprises an inner ring, an outer ring, a retaining frame disposed between the inner ring and the outer ring, and a ball on the retaining frame. Specifically, the bearing disassembly and assembly tool comprises a base 1, a disassembly portion 2, and a mounting portion 3, wherein the disassembly portion 2 comprises a plurality of protrusions 21 arranged at intervals along the circumference of a first end 11 of the base 1, wherein the plurality of protrusions 21 are used to abut against the retaining frame and avoid the ball; the mounting portion 3 is connected to the second end 12 of the base 1, and the mounting portion 3 comprises an annular boss 31, wherein the top surface of the annular boss 31 is used to place the ball of the bearing, the inner side of the annular boss 31 is used to place the inner ring, and the outer side of the annular boss 31 is used to sleeve the outer ring.

[0032] Through the above technical solution, the bearing disassembly and assembly tool has a plurality of protrusions 21 arranged at intervals along the circumference of the first end 11 of the base 1. During the disassembly of the bearing, the plurality of protrusions 21 are simultaneously abutted and pushed against the retaining frame to make the retaining frame detach from the inner ring and the outer ring, and then the balls are moved to the same side to make the inner ring detach from the outer ring, thereby completing the disassembly of the bearing. During this process, each part applies force evenly when disassembling the retaining frame, so as to reduce structural damage to the retaining frame, such as deformation or rupture, and ensure the integrity of the retaining frame. Afterwards, during the installation of the bearing, the inner ring and the outer ring can be preliminarily positioned through the annular boss 31, and then the balls are placed on the annular boss 31 and spread out, and finally the retaining frame is placed between the inner ring and the outer ring and pressed and fixed to complete the installation of the bearing. The installation process is simple and convenient with high efficiency.

[0033] In an exemplary application scenario, for example, the bearing as described above can be a plastic retainer 608 bearing, for example, used in roller skates, the bearing comprising an inner ring, an outer ring, a plastic retainer disposed between the inner ring and the outer ring, and balls located on the plastic retainer, wherein the number of the plastic retainer is set to one and is embedded between the inner ring and the outer ring from one side of the bearing along the axial direction of the bearing.

[0034] For example, when disassembling the above-mentioned plastic retainer 608 bearing, the bearing disassembly tool can be placed on the table through the second end cover 6 (to be described below), and then the staff holds the bearing so that the multiple protrusions 21 can abut against the plastic retainer and press the bearing downward, so that the plastic retainer is separated from the inner ring and the outer ring, and then the ball is moved to the same side to separate the inner ring from the outer ring, completing the disassembly of the bearing. Of course, the staff can also hold the bearing disassembly tool and the bearing with both hands respectively, and move them toward each other to disassemble the plastic retainer, which is not specifically limited in the present disclosure.

[0035] When installing the above-mentioned plastic retainer 608 bearing, the bearing disassembly tool can be placed on the table through the first end cover 5 (to be described below), and then the staff will place the inner ring on the inner side of the annular boss 31, the outer ring on the outer side of the annular boss 31, and the balls on the annular boss 31 and spread them out, and finally the plastic retainer is placed between the inner ring and the outer ring and pressed and fixed by the second end cover 6 to complete the installation of the bearing. The installation process is simple and convenient with high efficiency. Of course, the staff can also hold the bearing disassembly tool and the bearing with both hands to install the inner ring, outer ring, balls and retainer, and the present disclosure is not limited to this.

[0036] In some embodiments, reference Figure 4 The mounting portion 3 may further include a positioning post 32, which is located on the inner side of the annular boss 31. The positioning post 32 and the annular boss 31 are used to position the inner ring, so that the subsequent positioning of the outer ring, the ball and the plastic mounting frame can be facilitated. It can be understood that the inner ring can be sleeved on the positioning post 32, that is, the inner wall surface of the inner ring fits the outer wall surface of the positioning post 32, so that the inner ring can be positioned by the positioning post 32 while limiting the movement of the inner ring, so as to facilitate the subsequent installation of the outer ring, the ball and the plastic mounting frame.

[0037] In some other embodiments, referring to Figure 4 If the positioning column 32 is not provided, the inner wall surface of the annular boss 31 can be used to fit the outer wall surface of the inner ring. Similarly, the inner ring can be positioned and the movement of the inner ring can be restricted by the annular boss 31, which is convenient for the subsequent installation of the outer ring, the ball and the plastic mounting frame. The present disclosure is not limited thereto.

[0038] It should be noted that the position of the positioning column 32 and the annular boss 31 in the present disclosure is configured such that the inner ring is sleeved on the positioning column 32, that is, the inner wall surface of the inner ring is attached to the outer wall surface of the positioning column 32, and the inner wall surface of the annular boss 31 is attached to the outer wall surface of the inner ring, so that the inner ring can be positioned and the movement of the inner ring can be restricted. In addition, in the subsequent installation process of the ball, it can be prevented that the ball falls between the positioning column 32 and the inner ring and between the inner ring and the annular boss 31, which facilitates the installation of the bearing.

[0039] In some embodiments, reference Figure 4, the annular boss 31 may include a thin-walled section 311 and a thick-walled section 312 connected to each other, so that the inner wall surface of the outer ring can partially fit the outer wall surface of the thin-walled section 311, or the inner wall surface of the outer ring can partially fit the outer wall surface of the thick-walled section 312. In this way, the position of the outer ring relative to the inner ring can be moved, so that the ball can be assembled between the inner ring and the outer ring. Specifically, after the inner ring is sleeved on the positioning column 32, the outer ring is placed on the second end 12 of the base 1 and the inner wall surface of the outer ring is partially fitted to the outer wall surface of the thin-walled section 311. At this time, the distance between the part of the outer ring located on one side of the thick-walled section 312 and the inner ring is greater than the diameter of the ball. The staff places the ball on the annular boss 31 so that it is located between the outer ring and the inner ring. It should be noted that the outer wall of the inner ring is provided with a groove along the circumferential direction, and the height of the annular boss 31 is configured so that when the ball is placed on the annular boss 31, part of the ball can be embedded in the groove. Then move the outer ring toward the side of the thin-walled section 311 until the inner wall of the outer ring partially fits the outer wall of the thick-walled section 312. At this time, the axial upper limit of the ball in the bearing is located between the inner ring and the outer ring. Finally, spread the balls apart, place the plastic cage between the inner ring and the outer ring and press and fix it to complete the installation of the bearing. It can be understood that the side of the plastic cage close to the ball has a ball socket structured in an arc shape so that the ball can be moved during the installation process. Therefore, it is only necessary to initially move the ball before installing the plastic cage.

[0040] In some embodiments, reference Figure 2 and Figure 3 , multiple protrusions 21 are connected to the first end 11 of the base 1 through the annular connecting block 4. In this way, the structural strength of the multiple protrusions 21 can be improved by the annular connecting block 4, and the abutment and pushing effect of the multiple protrusions 21 can be maintained when disassembling the bearing, reducing the possibility of the protrusions 21 being deformed by the reaction force during the disassembly process, and improving the durability of the bearing disassembly tool. It can be understood that in some other possible embodiments not shown in the drawings, the multiple protrusions 21 can also be directly connected to the first end 11 of the base 1, and a connecting block can be set between two adjacent protrusions 21 to improve the structural strength of the multiple protrusions 21, and the present disclosure does not make specific limitations on this.

[0041] In some embodiments, reference Figure 2 and Figure 3, the first end 11 of the base 1 can be concave to form a receiving cavity 13, and a plurality of protrusions 21 are arranged around the opening of the receiving cavity 13, that is, the receiving cavity 13 is formed on the inner side of the plurality of annular protrusions 21, so that the internal space of the plurality of annular protrusions 21 can be reasonably utilized, reducing the overall volume of the bearing disassembly and assembly tool and reducing the manufacturing cost. Among them, the receiving cavity 13 is used to place a wrench, and the base 1 is provided with a use groove 14 that is plugged with the wrench. For example, the plastic retainer 608 bearing used in roller skates is still used as an example for explanation. One end of the wrench is plugged into the use groove 14, and then the staff can hold the base 1 and rotate it to remove the plastic retainer 608 bearing from the roller skates by the wrench. The wrench can be temporarily stored in the receiving cavity 13 after use to ensure the integrity of the disassembly function of the bearing disassembly and assembly tool. It is understandable that the wrench can be, for example, an inner hexagonal wrench, and the corresponding use slot 14 can be configured as a hexagonal slot. In addition, a plurality of inner hexagonal wrenches can be provided in the accommodating cavity 13 to adapt to different disassembly situations, and a plurality of corresponding use slots 14 can also be provided, or a plurality of inner hexagonal wrenches can be provided with handles of uniform specifications, and the handles can be used in conjunction with the use slots 14. The present disclosure is not limited thereto.

[0042] In some embodiments, the bearing disassembly and assembly tool may further include an ejector pin. The accommodating cavity 13 is used to receive the ejector pin. The ejector pin is used to disassemble the dust cover between the inner ring and the outer ring of the bearing so as to avoid the pushing effect of the multiple protrusions 21 on the plastic retainer. Then, the multiple protrusions 21 are used to abut and push the plastic retainer for disassembly, thereby completing the disassembly of the bearing. Similarly, the ejector pin can be temporarily stored in the accommodating cavity 13 after use to ensure the integrity of the disassembly function of the bearing disassembly and assembly tool.

[0043] In some embodiments, reference Figures 1 to 4 The base 1 further includes a gripping portion 15 connecting the first end 11 and the second end 12, and a groove 14 is formed in the gripping portion 15, so that a worker can hold the gripping portion 15 to turn a wrench, thereby facilitating the removal of the bearing from the roller skate. In addition, the inner part of the gripping portion 15 is hollowed out to form a receiving groove, that is, at least a part of the gripping portion 15 provides a basis for the formation of the receiving groove.

[0044] In some embodiments, reference Figures 1 to 4The first end 11 and the second end 12 are respectively arranged at the opposite ends of the gripping portion 15, and the radial dimension of the gripping portion 15 is smaller than the radial dimension of the first end 11 and the second end 12. For example, the central axes of the first end 11, the second end 12 and the gripping portion 15 can coincide with each other, and the gripping portion 15 can be extended along the direction of the central axis to facilitate the staff's gripping. At this time, the gripping portion 15 is constructed as a linear column. In addition, in some other possible embodiments not shown in the drawings, the gripping portion 15 can also be constructed in a "V" shape. For ease of understanding, the gripping portion 15 can include a first portion and a second portion. The first side end of the first portion is the first end 11 of the base 1, the first side end of the second portion is the second end 12 of the base 1, and the second side end of the first portion is connected to the second side end of the second portion. At this time, a groove 14 can be formed at the connection between the first portion and the second portion. Similarly, when removing the bearing from the roller skates, the staff can hold the first portion and the second portion at the same time to turn the wrench. Of course, a platform can be set at the connection between the first portion and the second portion so that the bearing disassembly tool can be placed on the table to disassemble the bearing itself. The present disclosure is not limited to this.

[0045] In some embodiments, reference Figure 1 The first end 11 of the base 1 is detachably connected to a first end cover 5 for covering the disassembly portion 2. In this way, the first end cover 5 can protect the plurality of protrusions 21, reduce the possibility of the protrusions 21 being bent, deformed or broken due to, for example, collision, etc., and ensure the disassembly function of the bearing disassembly tool. In addition, the base 1 can be placed on a table through the first end cover 5 to facilitate the installation of the bearing. The first end cover 5 can be connected to the first end 11 in any suitable manner, for example, the first end cover 5 can be threadedly connected to the first end 11, or the first end cover 5 can also be snap-fitted to the first end 11, and the present disclosure does not make specific limitations on this.

[0046] Similarly, the second end 12 of the base 1 is detachably connected to a second end cap 6 for covering the mounting portion 3. In this way, the second end cap 6 can protect the positioning column 32 and the annular boss 31, reduce the possibility of the positioning column 32 and the annular boss 31 being bent and deformed by, for example, collision, etc., and ensure the installation function of the bearing disassembly and assembly tool. During the installation of the bearing, the plastic retainer can be pressed by the second end cap 6. At this time, the force on the plastic retainer is uniform, reducing the possibility of deformation of the plastic retainer and ensuring the integrity of the plastic retainer. In addition, the base 1 can be placed on a table through the second end cap 6 to facilitate the disassembly of the bearing. The second end cap 6 can be connected to the second end 12 in any suitable manner. For example, the second end cap 6 can be threadedly connected to the second end 12, or the second end cap 6 can also be snap-fitted to the second end 12. The present disclosure does not make specific limitations on this.

[0047] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0048] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0049] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A bearing disassembly and assembly tool for disassembling and assembling a bearing, wherein the bearing comprises an inner ring, an outer ring, a cage disposed between the inner ring and the outer ring, and balls located on the cage, characterized in that: The bearing disassembly and assembly tool comprises: matrix; a disassembly portion comprising a plurality of protrusions arranged at intervals along the circumference of the first end of the base body, the plurality of protrusions being configured to abut against the retainer and avoid the balls; and The mounting portion is connected to the second end of the base, and the mounting portion includes an annular boss, the top surface of the annular boss is used to place the balls of the bearing, the inner side of the annular boss is used to place the inner ring, and the outer side of the annular boss is used to sleeve the outer ring.

2. The bearing disassembly and assembly tool according to claim 1, characterized in that: The mounting portion further includes a positioning column, which is located on the inner side of the annular boss and is used to position the inner ring between the positioning column and the annular boss.

3. The bearing disassembly and assembly tool according to claim 1, characterized in that: The inner wall surface of the annular boss is used to fit the outer wall surface of the inner ring.

4. The bearing disassembly and assembly tool according to claim 2 or 3, characterized in that: The annular boss includes a thin-walled section and a thick-walled section connected to each other, so that the inner wall surface of the outer ring can partially fit the outer wall surface of the thin-walled section, or the inner wall surface of the outer ring can partially fit the outer wall surface of the thick-walled section.

5. The bearing disassembly and assembly tool according to claim 1, characterized in that: The plurality of protrusions are connected to the first end of the base through an annular connecting block.

6. The bearing disassembly and assembly tool according to claim 1, characterized in that: The first end of the base is concave to form a receiving cavity, and the receiving cavity is used to place a wrench. The base is provided with a use groove for plugging with the wrench, and the multiple protrusions are arranged around the opening of the receiving cavity.

7. The bearing disassembly and assembly tool according to claim 6, characterized in that: The bearing disassembly and assembly tool further includes a thimble. The accommodating cavity is used to receive the thimble, and the thimble is used to disassemble the dust cover of the bearing located between the inner ring and the outer ring.

8. The bearing disassembly and assembly tool according to claim 6, characterized in that: The base further includes a gripping portion connecting the first end and the second end, and the use groove is formed in the gripping portion.

9. The bearing disassembly and assembly tool according to claim 8, characterized in that: The first end and the second end are respectively disposed at opposite ends of the holding portion, and a radial dimension of the holding portion is smaller than radial dimensions of the first end and the second end.

10. The bearing disassembly and assembly tool according to claim 2, characterized in that: The first end of the base is detachably connected to a first end cover for covering the detachable portion; and / or, The second end of the base is detachably connected to a second end cover for covering the mounting portion.

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