Axial self-locking structure of solid needle bearing
By combining the inner hole self-locking boss and the outer diameter self-locking groove of the solid needle roller bearing axial self-locking structure, the problem of multiple processes and high costs in preventing axial displacement of bearings in the existing technology is solved, and the effects of simplified assembly, reduced costs and extended bearing service life are achieved.
Patent Information
- Application Number
- CN202520322138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing technologies for preventing axial displacement of bearings involve numerous procedures, high costs, and reduced bearing lifespan.
The solid needle roller bearing adopts an axial self-locking structure. Through the cooperation of the inner hole self-locking boss and the bearing outer diameter self-locking groove, the bearing achieves self-locking positioning, simplifies the assembly process and reduces end face riveting deformation.
It reduced costs, simplified assembly processes, improved production efficiency, reduced bearing deformation, and extended bearing life.
Smart Images
Figure CN223908638U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of bearing design especially to the technical field of bearing self-locking structure design, specifically to a solid needle bearing axial self-locking structure. BACKGROUND
[0002] When the bearing is installed and used, the outer ring of the bearing is usually matched with the hole of the installation shell by interference, but when the bearing is actually running, the outer ring and the matched shell hole will produce relative displacement after the bearing is used for a period of time due to the influence of load and working temperature. This displacement has both radial displacement and axial displacement. In order to prevent the axial displacement of the bearing from causing the bearing to escape and fail, the following two methods are currently used to prevent the axial displacement of the bearing:
[0003] 1. A snap spring groove is processed at the end of the shell, and a snap spring is used to prevent the axial displacement of the bearing. This method increases the process of processing the snap spring groove and increases the cost of using the snap spring.
[0004] 2. After the bearing is installed, the shell is used to prevent the axial displacement of the bearing by stamping and riveting points at the end face of the bearing outer ring. This method increases the process of stamping and riveting points, and the bearing end face will be deformed after riveting, which affects the service life of the bearing.
[0005] Therefore, the methods of using a snap spring and a riveting point to fix the end face of the outer ring to prevent the axial displacement of the bearing have the disadvantages of multiple processes, high cost, and affecting the service life of the bearing. SUMMARY
[0006] In view of the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a solid needle bearing axial self-locking structure to solve the difficulties of the prior art.
[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides a solid needle bearing axial self-locking structure, which comprises:
[0008] An installation shell 1, wherein the installation shell 1 is centrally provided with a bearing installation channel 11;
[0009] A bearing 2, wherein the bearing 2 is arranged in the center of the installation shell 1, and the bearing 2 is clamped in the bearing installation channel 11 by a self-locking structure 3;
[0010] The self-locking structure 3 is arranged at the bottom of the mutual connection between the bearing 2 and the bearing installation channel 11.
[0011] According to the preferred scheme, the top and bottom of the bearing installation channel 11 are provided with chamfers 111.
[0012] According to the preferred scheme, the top of the outer ring 21 of the bearing 2 is a marking surface 22.
[0013] According to the preferred scheme, the mark surface 22 prevents the occurrence of the situation of the sleeve reversal.
[0014] According to the preferred scheme, the outer ring 21 is provided with a let-out round corner 211 around.
[0015] According to the preferred scheme, the let-out round corner 211 and the chamfer 111 constitute a guide structure, and the bearing 2 is clamped into the mounting shell 1 without the need of additional positioning tools.
[0016] According to the preferred scheme, the self-locking structure 3 comprises an inner hole self-locking boss 31 and a bearing outer diameter self-locking groove 32, the inner hole self-locking boss 31 is arranged around the bottom of the bearing mounting channel 11, the bearing outer diameter self-locking groove 32 is arranged at the bottom of the outer ring 21, and the inner hole self-locking boss 31 is clamped into the bearing outer diameter self-locking groove 32.
[0017] According to the preferred scheme, the top of the inner hole self-locking boss 31 is provided with a self-locking boss guide angle 311, the self-locking boss guide angle 311 is 9°, the length is 1.5 mm, the length of the self-locking boss guide angle 311 is 2 mm, and the protruding amount is 0.15 mm.
[0018] According to the preferred scheme, the top of the bearing outer diameter self-locking groove 32 is a self-locking groove guide angle 321, the length of the bearing outer diameter self-locking groove 32 is 2 mm, the groove depth is 0.15 mm, the guide angle of the self-locking groove guide angle 321 is 9°, and the length is 1.5 mm.
[0019] The utility model discloses an installation shell 1, bearing 2 and self-locking structure 3, when installing, only need the mark surface of bearing 2 faces up, the inner hole self-locking boss 31 one side in installation shell 1 faces down, the bottom of bearing outer ring is positioned through let-out round corner 211 side and is clamped into the chamfer 111 of bearing mounting channel 11 of installation shell 1, uses the bearing 2 of pressing machine and is pressed into installation shell 1, makes the inner hole self-locking boss 31 embeds in bearing outer diameter self-locking groove 32, can, compared with the less spring groove and the spring stop structure accessories, reduce the cost, simplify the process of assembly at the same time, improve production efficiency, and reduce the deformation of bearing caused by the riveting pressure of end surface riveting pressure fixed bearing end surface, improve product quality, bearing service life.
[0020] In the following, the most optimal embodiment of the implementation of the utility model will be described in more detail in combination with the drawings, so that the features and advantages of the utility model can be easily understood. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is shown as the cross-sectional view of the utility model;
[0022] Figure 2 It is shown as the utility model Figure 1Figure 3 is a partial enlarged and exploded schematic view of the self-locking structure 3;
[0023] Label explanation
[0024] 1, installation housing; 11, bearing installation passage; 111, chamfer;
[0025] 2, bearing; 21, outer ring; 211, let-out fillet; 22, marking surface;
[0026] 3, self-locking structure; 31, inner hole self-locking boss; 311, self-locking boss guide angle; 32, bearing outer diameter self-locking groove; 321, self-locking groove guide angle; DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the technical scheme of the utility model more clear, the technical scheme of the utility model embodiment will be described clearly and completely in the following with reference to the drawings of the utility model specific embodiment. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0028] Compared with the embodiment shown in the drawings, the feasible implementation scheme within the protection scope of the utility model can have fewer components, have other components not shown in the drawings, have different components, have differently arranged components or differently connected components, etc. In addition, two or more components in the drawings can be realized in a single component, or a single component shown in the drawings can be realized as a plurality of separate components.
[0029] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar words do not necessarily represent a quantity limit. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connected" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0030] The utility model provides a kind of entity needle roller bearing axial self-locking structure, for bearing installation process, the utility model is applicable to small bearing, this self-locking structure 3 structure reduces the deformation of bearing caused by end face riveting pressure fixed bearing end face, improves bearing service life.
[0031] Generally, the entity needle roller bearing axial self-locking structure proposed in the utility model mainly comprises: mounting shell 1, bearing 2 and self-locking structure 3. Figure 1 It shows the arrangement relationship of mounting shell 1, bearing 2 and self-locking structure 3.
[0032] The entity needle roller bearing axial self-locking structure proposed in the utility model, only need to mark surface of bearing 2 upward when installing, inner hole self-locking boss 31 side downward in mounting shell 1, bearing 2 outer ring bottom positioning is clamped into chamfer 111 of bearing installation channel 11 of mounting shell 1 from entry side let-out round corner 211, bearing 2 is pressed into mounting shell 1 using press fitting machine, so that inner hole self-locking boss 31 is embedded in bearing outer diameter self-locking groove 32, which is less than clamping spring groove and clamping spring stop structure accessories, reduces cost, simplifies assembly process, improves production efficiency, reduces the deformation of bearing caused by end face riveting pressure fixed bearing end face, improves product quality, bearing service life.
[0033] The above-mentioned mounting shell 1 is in the middle of bearing installation channel 11, bearing 2 is arranged in the middle of mounting shell 1, bearing 2 is clamped in bearing installation channel 11 through self-locking structure 3, chamfer 111 is arranged at the top and bottom of bearing installation channel 11, the top of outer ring 21 of bearing 2 is marked surface 22, let-out round corner 211 is arranged around outer ring 21, it should be noted that marked surface 22 provides intuitive installation positioning mark, because the overall strength of mounting shell 1 is low if it is hollow interface, if bearing is clamped into mounting shell 1 from the bottom of bearing installation channel 11, the deformation of mounting shell 1 will be caused by the pressing surface of press fitting machine being mounting shell 1, to prevent technicians from taking reverse bearing 2 when operating, to prevent the situation of being reversed, in addition, chamfer 111+let-out round corner 211 double-directional structure can realize the positioning pre-assembly between mounting shell 1 and bearing 2 without tool.
[0034] The bottom of the bearing 2 and the bearing installation channel 11 is provided with a self-locking structure 3, wherein the self-locking structure 3 comprises: an inner hole self-locking boss 31 and a bearing outer diameter self-locking groove 32, the inner hole self-locking boss 31 is arranged around the bottom of the bearing installation channel 11, the bearing outer diameter self-locking groove 32 is arranged at the bottom of the outer ring 21, the inner hole self-locking boss 31 is clamped in the bearing outer diameter self-locking groove 32, the top of the inner hole self-locking boss 31 is provided with a self-locking boss guide angle 311, the self-locking boss guide angle 311 is 9°, the length is 1.5 mm, the length of the self-locking boss guide angle 311 is 2 mm, the protruding amount is 0.15 mm, the top of the bearing outer diameter self-locking groove 32 is a self-locking groove guide angle 321, the length of the bearing outer diameter self-locking groove 32 is 2 mm, the groove depth is 0.15 mm, the self-locking groove guide angle 321 is a guide angle of 9°, and the length is 1.5 mm, and it should be noted that the inner hole self-locking boss 31 and the bearing outer diameter self-locking groove are in interference fit after installation, so as to ensure the reliability of axial positioning, and the displacement fillet can eliminate assembly stress.
[0035] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.
Claims
1. An axial self-locking structure for a solid needle roller bearing, characterized in that, include: Mounting housing (1), wherein the bearing mounting channel (11) is located in the center of the mounting housing (1); The bearing (2) is located in the center of the mounting housing (1) and is secured in the bearing mounting channel (11) by a self-locking structure (3); The self-locking structure (3) is located at the bottom of the connection between the bearing (2) and the bearing mounting channel (11).
2. The axial self-locking structure of the solid needle roller bearing according to claim 1, characterized in that, The bearing mounting channel (11) has chamfers (111) at the top and bottom.
3. The axial self-locking structure of the solid needle roller bearing according to claim 2, characterized in that, The top of the outer ring (21) of the bearing (2) is a marking surface (22).
4. The axial self-locking structure of the solid needle roller bearing according to claim 3, characterized in that, The outer ring (21) is provided with rounded corners (211) around its perimeter.
5. The axial self-locking structure of the solid needle roller bearing according to claim 4, characterized in that, The self-locking structure (3) includes: an inner hole self-locking boss (31) and a bearing outer diameter self-locking groove (32). The inner hole self-locking boss (31) is arranged around the bottom of the bearing mounting channel (11). The bearing outer diameter self-locking groove (32) is opened at the bottom of the outer ring (21). The inner hole self-locking boss (31) is fitted and locked in the bearing outer diameter self-locking groove (32).
6. The axial self-locking structure of the solid needle roller bearing according to claim 5, characterized in that, The top of the self-locking boss (31) in the inner hole is provided with a self-locking boss guide angle (311), the self-locking boss guide angle (311) is 9°, the length is 1.5mm, the length of the self-locking boss guide angle (311) is 2mm, and the protrusion is 0.15mm.
7. The axial self-locking structure of the solid needle roller bearing according to claim 6, characterized in that, The top of the bearing outer diameter self-locking groove (32) is a self-locking groove guide angle (321). The bearing outer diameter self-locking groove (32) is 2mm long and 0.15mm deep. The self-locking groove guide angle (321) has a guide angle of 9° and a length of 1.5mm.