bearing
By designing a mandrel and rolling assembly structure that can move within the outer casing, bidirectional movement of the mandrel is achieved, solving the problem that existing bearings cannot simultaneously achieve axial movement and rotation around the axis, thus improving the bearing's load-bearing capacity and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN SAMON AUTOMATION TECH
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
Existing bearings cannot simultaneously achieve axial movement and rotation of the spindle around the axis, and their ability to bear radial or axial loads is poor, making them inconvenient to use.
A bearing structure was designed in which the spindle can move axially within the outer sleeve, and the rolling assembly includes multiple rolling elements that slide against the inner walls of the outer sleeve and the spindle. The rolling elements roll within a limiting space, and the bidirectional movement of the spindle and the load capacity are achieved through the cooperation of the cage and the limiting assembly.
It effectively reduces friction, improves the smoothness of spindle movement and the load capacity of bearings, and extends service life.
Smart Images
Figure CN224550650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motion bearing technology, and in particular to a bearing. Background Technology
[0002] In mechanical structures, commonly used motion bearings include deep groove ball bearings and linear bearings. However, deep groove ball bearings are mostly used for rotational motion around a straight line, while linear bearings are mostly used for linear motion along a specific direction. But with increasing processing requirements, in many cases, the spindle needs to move axially while also rotating around its own axis. However, existing bearings can only provide the spindle with one specific mode of motion and have poor radial or axial load-bearing capacity, making them extremely inconvenient to use.
[0003] Therefore, there is an urgent need for a bearing that can solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a bearing that enables the spindle to rotate around the axis and move along the axial direction, and to improve its load capacity.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A bearing, characterized in that it comprises:
[0007] coat
[0008] The mandrel is axially movable within the outer sleeve, and the mandrel is rotatable about its own axis, with a limiting space formed between the outer sleeve and the mandrel;
[0009] A rolling assembly is located within the limiting space. The rolling assembly includes multiple rolling elements, which simultaneously slide against the inner wall of the outer sleeve and the outer wall of the mandrel. When the mandrel moves axially or rotates around the axis, the multiple rolling elements can roll within the limiting space.
[0010] Preferably, the rolling assembly further includes a retainer, which is sleeved on the outer periphery of the mandrel and confined within the limiting space, and the plurality of rolling elements are disposed on the retainer.
[0011] Preferably, the cage is provided with a plurality of limiting holes spaced apart and evenly distributed along the circumference, and each limiting hole is provided with a corresponding rolling element, and the depth of the limiting hole along the radial direction of the mandrel is less than the diameter of the rolling element.
[0012] Preferably, the retainer is provided with a plurality of limiting holes spaced apart and evenly distributed along the axial direction.
[0013] Preferably, the bearing further includes a limiting component configured to axially limit the cage.
[0014] Preferably, the limiting component includes a first limiting plate and a second limiting plate, which are respectively disposed at both ends of the outer sleeve along the axial direction. The first limiting plate, the second limiting plate, the inner wall of the outer sleeve, and the outer wall of the mandrel together form the limiting space.
[0015] Preferably, the first limiting plate and the second limiting plate are detachably connected to both ends of the outer jacket along the axial direction.
[0016] Preferably, both the first limiting plate and the second limiting plate are provided with locking holes, and the outer sleeve is provided with locking holes. The locking member can be confined within the locking holes and the locking holes to fix the limiting component.
[0017] Preferably, both the first limiting plate and the second limiting plate are provided with a plurality of locking holes along the circumferential direction, and the locking holes are provided corresponding to the locking holes.
[0018] Preferably, the outer sleeve has a boss at one end along the axial direction, and the boss has multiple mounting holes along the circumferential direction.
[0019] The beneficial effects of this utility model are:
[0020] This utility model belongs to the field of motion bearing technology and discloses a bearing. The bearing includes an outer sleeve, a spindle, and a rolling assembly. The spindle is axially movably disposed inside the outer sleeve and can rotate around its own axis. A limiting space is formed between the outer sleeve and the spindle. The rolling assembly is confined within the limiting space and includes multiple rolling elements. The multiple rolling elements simultaneously slide and abut against the inner wall of the outer sleeve and the outer wall of the spindle. When the spindle moves axially or rotates around its axis, the multiple rolling elements can roll within the limiting space.
[0021] In this structure, multiple rolling elements are located within a limiting space and simultaneously slide against the inner wall of the outer sleeve and the outer wall of the mandrel. Therefore, when the mandrel moves axially or rotates around its own axis, all the rolling elements can roll within the limiting space, thereby undertaking a guiding role, effectively reducing friction, and improving the smoothness of the mandrel's linear axial movement or rotation around its own axis. In addition, the multiple rolling elements can generate rolling friction with the mandrel and the outer sleeve respectively, so the average force borne by each rolling element is small, which also reduces contact stress, thereby indirectly improving the bearing's radial and axial load-bearing capacity and extending its service life. Attached Figure Description
[0022] Figure 1 This is a side view of the bearing provided by this utility model;
[0023] Figure 2 This is a cross-sectional view of the bearing provided by this utility model;
[0024] Figure 3 This is an exploded view of the bearing provided by this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the rolling component provided by this utility model.
[0026] In the picture:
[0027] 10. Outer casing; 11. Locking hole; 12. Boss; 13. Mounting hole;
[0028] 20. Mandrel; 21. Connecting hole;
[0029] 30. Rolling assembly; 31. Rolling element; 32. Cage; 321. Limiting hole;
[0030] 40. Limiting component; 41. First limiting plate; 42. Second limiting plate; 43. Locking hole. Detailed Implementation
[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0035] This embodiment provides a bearing, such as Figures 1-4 As shown, the bearing includes an outer sleeve 10, a spindle 20, and a rolling assembly 30. The spindle 20 is axially movably disposed within the outer sleeve 10 and can rotate around its own axis. A limiting space is formed between the outer sleeve 10 and the spindle 20. The rolling assembly 30 is confined within the limiting space and includes multiple rolling elements 31. The multiple rolling elements 31 simultaneously slide against the inner wall of the outer sleeve 10 and the outer wall of the spindle 20. When the spindle 20 moves axially or rotates around its axis, the multiple rolling elements 31 can roll within the limiting space.
[0036] In this structure, multiple rolling elements 31 are located within the limiting space and simultaneously slide against the inner wall of the outer sleeve 10 and the outer wall of the spindle 20. Therefore, when the spindle 20 moves axially or rotates around its own axis, the multiple rolling elements 31 can roll within the limiting space, thereby undertaking a guiding role, effectively reducing friction, and improving the smoothness of the spindle 20's linear axial movement or rotation around its own axis. In addition, the multiple rolling elements 31 can generate rolling friction with the spindle 20 and the outer sleeve 10 respectively, so the average force borne by each rolling element 31 is small, which also reduces contact stress, thereby indirectly improving the bearing's radial and axial load-bearing capacity and extending its service life.
[0037] It should be noted that the rolling element 31 is a ball. Balls not only have a simple structure, but also have a strong load-bearing capacity. Their easy rotation can also effectively reduce rolling friction.
[0038] In addition, such as Figures 1-2 As shown, the outer sleeve 10 has a boss 12 at one end along the axial direction, and the boss 12 has multiple mounting holes 13 along the circumferential direction; the mandrel 20 has a mating hole 21 at one end. Before use, the mating end of the device to be used can be inserted into the mating hole 21 of the mandrel 20, thereby driving the mandrel 20 to move along the axis or rotate around the axis; by using a mounting component (which can be any structure such as an anchor, pin, or bolt) through the mounting hole 13, the outer sleeve 10 can be installed in a preset position. In addition, the multiple mounting holes 13 can significantly improve the stability of the bearing during installation. Furthermore, in this embodiment, the width of the boss 12 is greater than the diameter of the outer sleeve 10 body, thereby facilitating the machining of the mounting holes 13.
[0039] Specifically, such as Figures 2-4 As shown, the rolling assembly 30 also includes a retainer 32, which is sleeved on the outer periphery of the spindle 20 and confined within a limiting space. Multiple rolling elements 31 are all disposed on the retainer 32. This arrangement allows all rolling balls to be mounted on the same retainer 32, reducing installation difficulty and improving ease of use. Furthermore, it fixes the rolling elements 31 in a specific position, preventing them from repeatedly moving between different positions during use, thus improving the user experience.
[0040] Furthermore, such as Figure 4 As shown, the cage 32 is provided with a plurality of circumferentially spaced and evenly arranged limiting holes 321, and each limiting hole 321 corresponds to a rolling element 31. The depth of the limiting hole 321 along the radial direction of the spindle 20 is less than the diameter of the rolling element 31. This arrangement not only reduces the installation difficulty of the rolling element 31, but also allows multiple rolling elements 31 to roll independently without affecting or interfering with each other, thus ensuring smooth rolling. In addition, since the depth of the limiting hole 321 along the radial direction of the spindle 20 is less than the diameter of the rolling element 31, it can be ensured that only the rolling element 31 slides and abuts against the inner wall of the outer sleeve 10 and the outer wall of the spindle 20 at the same time, avoiding the spindle 20 rubbing against the cage 32, thereby ensuring the smooth movement of the spindle 20.
[0041] In addition, such as Figure 4 The cage 32 is provided with a plurality of locating holes 321 spaced apart and evenly distributed along the axial direction. Each locating hole 321 can accommodate a rolling element 31, further improving the smoothness of the spindle 20's movement. Simultaneously, the locating holes 321 are evenly and spaced along both the circumferential and axial directions of the cage 32, indirectly ensuring that the multiple rolling elements 31 are also evenly and spaced apart, thereby significantly improving the guiding capability and reducing the load borne by each rolling element 31. The evenly distributed structure also ensures that the load received by each rolling element 31 is approximately the same, thus guaranteeing a good driving effect.
[0042] In addition, such as Figures 1-3 As shown, the bearing also includes a limiting component 40, and the limiting component 40 is configured to limit the structure of the cage 32 along the axial direction. When the mandrel 20 moves axially from the cage 32 without the mandrel 20, the rolling component 30 can be brought out of the limiting space by installing the limiting component 40. Furthermore, by setting the limiting component 40, it is not necessary to additionally process the cage 32 structure at both ends of the outer sleeve 10, thereby reducing the processing difficulty.
[0043] Specifically, such as Figures 1-3 As shown, the limiting assembly 40 includes a first limiting plate 41 and a second limiting plate 42. The first limiting plate 41 and the second limiting plate 42 are respectively disposed at both ends of the outer sleeve 10 along the axial direction. The first limiting plate 41, the second limiting plate 42, the inner wall of the outer sleeve 10, and the outer wall of the spindle 20 together form a limiting space. That is, the first limiting plate 41 and the second limiting plate 42 limit the retainer 32 along the axial direction, and the outer sleeve 10 and the spindle 20 limit the retainer 32 along the radial direction. At the same time, multiple rolling elements 31 can provide rolling friction for the spindle 20, reduce friction, and thus make the movement of the spindle 20 smoother.
[0044] It should be noted that the first limiting plate 41 and the second limiting plate 42 are detachably connected to both ends of the outer sleeve 10 along the axial direction. This structure facilitates disassembly and assembly, which is beneficial for subsequent maintenance. At the same time, when the rolling element 31 becomes rusty or damaged, the first limiting plate 41 and the second limiting plate 42 can be directly removed to replace the rolling element 31, thus improving the convenience of maintenance.
[0045] Specifically, such as Figure 1 and Figure 2 As shown, both the first limiting plate 41 and the second limiting plate 42 are provided with locking holes 43, and the outer sleeve 10 is provided with locking holes 11. The locking element can be confined within the locking holes 43 and the locking holes 11 to fix the limiting assembly 40. The locking element can be any structure such as bolts, screws, or pins, which are not shown in the figure. This design is not only simple in structure but also convenient to install, greatly improving the ease of disassembly and assembly. At the same time, since the outer sleeve 10 is installed in a preset position by the mounting component, after the first limiting plate 41 and the second limiting plate 42 are locked to the outer sleeve 10 by the locking element, a good locking effect can be ensured, thereby further improving the axial limiting effect on the retainer 32.
[0046] In addition, such as Figures 1-2As shown, both the first limiting plate 41 and the second limiting plate 42 are provided with multiple locking holes 43 along the circumference, and the locking holes 11 are correspondingly provided with the locking holes 43. The multiple locking holes 43 can effectively improve the fixing effect and avoid breakage due to excessive local pressure; and since the locking holes 11 and locking holes 43 are correspondingly provided, only one locking hole 43 needs to be aligned with the locking hole 11 to complete the positioning of all other holes, which not only improves the positioning efficiency but also reduces the difficulty of operation.
[0047] In summary, in this embodiment, the bearing spindle 20 can rotate around its own axis and move along the axial direction, which improves the convenience of operation. At the same time, since multiple rolling elements 31 are evenly arranged between the outer sleeve 10 and the spindle 20, the load borne by each rolling element 31 is significantly reduced, thereby improving the load capacity of the entire bearing.
[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A bearing, characterized in that, include: Outerwear (10) The mandrel (20) is axially movably disposed within the outer sleeve (10), and the mandrel (20) is rotatable around its own axis, with a limiting space formed between the outer sleeve (10) and the mandrel (20); The rolling assembly (30) is located within the limiting space. The rolling assembly (30) includes a plurality of rolling elements (31). The plurality of rolling elements (31) simultaneously slide against the inner wall of the outer sleeve (10) and the outer wall of the spindle (20). When the spindle (20) moves along the axial direction or rotates around the axis, the plurality of rolling elements (31) can roll within the limiting space.
2. The bearing according to claim 1, characterized in that, The rolling assembly (30) further includes a retainer (32), which is sleeved on the outer periphery of the spindle (20) and confined within the limiting space. The plurality of rolling elements (31) are all disposed on the retainer (32).
3. The bearing according to claim 2, characterized in that, The retainer (32) is provided with a plurality of limiting holes (321) spaced apart and evenly arranged in the circumferential direction. Each limiting hole (321) is provided with a corresponding rolling element (31), and the depth of the limiting hole (321) along the radial direction of the spindle (20) is less than the diameter of the rolling element (31).
4. The bearing according to claim 3, characterized in that, The retainer (32) is provided with a plurality of limiting holes (321) spaced apart and evenly distributed along the axial direction.
5. The bearing according to claim 2, characterized in that, The bearing also includes a limiting assembly (40) configured to axially limit the cage (32).
6. The bearing according to claim 5, characterized in that, The limiting component (40) includes a first limiting plate (41) and a second limiting plate (42). The first limiting plate (41) and the second limiting plate (42) are respectively disposed at both ends of the outer sleeve (10) along the axial direction. The first limiting plate (41), the second limiting plate (42), the inner wall of the outer sleeve (10) and the outer wall of the mandrel (20) together form the limiting space.
7. The bearing according to claim 6, characterized in that, The first limiting plate (41) and the second limiting plate (42) are detachably connected to both ends of the outer jacket (10) along the axial direction.
8. The bearing according to claim 7, characterized in that, Both the first limiting plate (41) and the second limiting plate (42) are provided with locking holes (43), and the outer sleeve (10) is provided with locking holes (11). The locking member can be limited to the locking holes (43) and the locking holes (11) to fix the limiting component (40).
9. The bearing according to claim 8, characterized in that, Both the first limiting plate (41) and the second limiting plate (42) are provided with a plurality of locking holes (43) along the circumferential direction, and the locking hole (11) is provided corresponding to the locking hole (43).
10. The bearing according to any one of claims 1-9, characterized in that, The outer casing (10) is provided with a boss (12) at one end along the axial direction, and the boss (12) is provided with a plurality of mounting holes (13) along the circumferential direction.