Pre-tightening angular contact ball bearing with spring
By using a compression spring to apply axial force to the outer ring in a single-row angular contact ball bearing, the contact preload of the outer ring, inner ring, and steel balls is maintained, thus solving the problem of reduced rotational accuracy and rigidity of single-row angular contact ball bearings under radial loads. This reduces vibration and noise and extends bearing life.
Patent Information
- Application Number
- CN202520686643.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-04-14
AI Technical Summary
When a single-row angular contact ball bearing is subjected to radial loads or combined loads, insufficient preload will lead to reduced bearing rotational accuracy and rigidity, increased vibration and noise, and shortened bearing life.
By installing a compression spring on the outer ring, an axial force is applied to press the outer ring against the steel ball, so that the outer ring, inner ring and steel ball are always in contact and in a pre-tightened state. The pre-tightening force of the spring is used to eliminate the additional axial force and external load of the bearing.
This achieves a preloaded state for the bearing under combined loads, improving rotational accuracy and rigidity, reducing vibration and noise, and extending bearing life.
Smart Images
Figure CN223754481U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bearing technical field, especially is involved with the spring pre -tightening angular contact ball bearing. BACKGROUND
[0002] Single row angular contact ball bearing can only bear one direction axial load, and will cause additional axial force when bearing radial load, and can only limit the axial displacement of shaft or shell in one direction. Therefore, single row angular contact ball bearing usually needs to be installed in pairs to eliminate additional axial force and limit the axial clearance of shaft or shell in two directions. When horizontal motor bears not very large axial load, deep groove ball bearing is generally used, and if the axial load is large and exceeds the bearing capacity of deep groove ball bearing, angular contact ball bearing needs to be installed in pairs. But when used only for axial thrust positioning and the axial load is large, single row angular contact ball bearing can be used.
[0003] But if single row angular contact ball bearing is not pre -tensioned when bearing radial load or combined load, it will cause the reduction of bearing rotation accuracy and rigidity, the increase of vibration and noise, and the shortening of bearing life, so corresponding axial reverse load must be applied.
[0004] Therefore, we provide the spring pre -tightening angular contact ball bearing to solve the above problems. CONTENT OF THE UTILITY MODEL
[0005] The utility model discloses a spring pre -tightening angular contact ball bearing, which applies axial force to the outer ring through compression spring, so that the outer ring is pressed towards the steel ball, and the outer ring, the inner ring and the steel ball are always in contact and pre -tensioned state, solving the problem that the existing single row angular contact ball bearing is inconvenient to pre -tension.
[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:
[0007] The utility model discloses a spring pre -tightening angular contact ball bearing, which includes an outer ring, the inside of the outer ring is provided with an inner ring, the outer ring and the inner ring are provided with a retainer, a plurality of steel balls are movably connected on the retainer, a plurality of mounting holes are formed on the outer wall of one side of the outer ring at equal intervals along the circumference, a fixed plate is fixedly connected in part mounting hole, a movable plate is movably connected on one side of the fixed plate, the movable plate is located on the outside of the mounting hole, and a compression spring is fixedly connected between the fixed plate and the movable plate.
[0008] The utility model further provides that: the inner circumferential surface of the outer ring is provided with an inner channel, the outer circumferential surface of the inner ring is provided with an outer channel, the steel ball is arranged between the inner channel and the outer channel, and the steel ball has a certain contact angle with the inner channel and the outer channel and can roll flexibly.
[0009] The further setting of the utility model discloses: a plurality of pockets for installing steel balls are equidistantly formed on the retainer along the circumferential direction, and the number of the pockets is consistent with the number of the steel balls.
[0010] The further setting of the utility model discloses: the mounting hole without the compression spring is clamped with the plugging block, and the plugging block is fixedly connected with the anti-skid sleeve at one end outside the mounting hole.
[0011] The further setting of the utility model discloses: the mounting rod is fixedly connected on the outer wall of the side of the fixed plate close to the movable plate, the end of the mounting rod away from the fixed plate is movably penetrated through the movable plate and is connected with the limiting nut through screw thread, and the limiting nut is used for adjusting the pre-tightening force of the compression spring.
[0012] The utility model has the following beneficial effects:
[0013] The utility model discloses in the working condition, the spring is pressed to the steel ball with the outer ring, makes the bearing outer ring, inner ring, steel ball always in contact and pre-tightening state, namely when the bearing bears the combined load, can pass through the adjustment spring pressure to eliminate the bearing additional axial force and external force load, thereby reach angular contact ball bearing pre-tightening state.
[0014] Of course, any product of the utility model does not necessarily need to achieve all the advantages mentioned above. DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to introduce the drawing briefly, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, other drawings can be obtained according to these drawings without creating labor.
[0016] Figure 1 It is the whole structure schematic diagram of the utility model.
[0017] Figure 2 It is the whole front view sectional view of the utility model.
[0018] Figure 3 It is the structure exploded view of the outer ring of the utility model.
[0019] Figure 4 It is the structure schematic diagram of the inner ring of the utility model.
[0020] Figure 5 It is the structure exploded view of the retainer of the utility model.
[0021] Figure 6The structure schematic view of the compression spring.
[0022] In the drawings, the component list represented by each reference sign is as follows.
[0023] 1-outer ring, 101-inner channel, 102-mounting hole, 103-plug block, 104-anti-skid sleeve, 2-inner ring, 201-outer channel, 3-retainer, 301-pouch hole, 4-steel ball, 5-compression spring, 501-fixed plate, 501a-mounting rod, 501b-limit nut, 502-movable plate. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , which are specific embodiments of the utility model. The embodiments provide a spring pre-tightening angular contact ball bearing, which comprises an outer ring 1, an inner ring 2, a retainer 3, a steel ball 4 and a compression spring 5. The outer ring 1 is pressed towards the steel ball 4 by the compression spring 5 to apply an axial force, so that the outer ring 1, the inner ring 2 and the steel ball 4 are always in contact and pre-tightening state, solving the problem that the existing single-row angular contact ball bearing is inconvenient to pre-tighten.
[0026] Specifically, the inner ring 2 is arranged inside the outer ring 1, the cage 3 is arranged between the outer ring 1 and the inner ring 2, a plurality of steel balls 4 are movably connected on the cage 3, a plurality of mounting holes 102 are equidistantly arranged on the outer wall of one side of the outer ring 1 in the circumferential direction, a part of the mounting holes 102 are fixedly connected with the fixed plates 501, the fixed plates 501 are movably connected with the movable plates 502 on one side, the movable plates 502 are located outside the mounting holes 102, the compression springs 5 are fixedly connected between the fixed plates 501 and the movable plates 502, the outer ring 1 is arranged to connect the bearing with other structures or parts and provide a support structure for the bearing, the mounting holes 102 are arranged to install the compression springs 5, the inner ring 2 is arranged to connect the bearing with a rod or a shaft, the cage 3 is arranged to prevent the steel balls 4 from colliding with each other and ensure that the steel balls 4 are evenly distributed between the outer ring 1 and the inner ring 2, avoiding partial load, the steel balls 4 are arranged to disperse the force between the outer ring 1 and the inner ring 2 through rolling contact, achieving the purpose of reducing friction, the compression springs 5 are arranged to exert an axial force on the outer ring 1, so that the outer ring 1, the inner ring 2 and the steel balls 4 are in contact with each other, the fixed plates 501 are arranged to install one end of the compression springs 5 in the mounting holes 102, and the movable plates 502 are arranged to install the other end of the compression springs 5.
[0027] Further, the inner groove 101 is arranged on the inner circumferential surface of the outer ring 1, the outer groove 201 is arranged on the outer circumferential surface of the inner ring 2, and the steel balls 4 are arranged between the inner groove 101 and the outer groove 201, the steel balls 4 have a certain contact angle with the inner groove 101 and the outer groove 201 and can roll flexibly;
[0028] A plurality of pockets 301 for installing the steel balls 4 are equidistantly arranged on the cage 3 in the circumferential direction, and the number of the pockets 301 is consistent with that of the steel balls 4;
[0029] The mounting holes 102 without the compression springs 5 are all clamped with the plug blocks 103, and the plug blocks 103 are fixedly connected with the anti-skid sleeves 104 at one end outside the mounting holes 102;
[0030] The mounting rod 501a is fixedly connected to the outer wall of one side of the fixed plate 501 close to the movable plate 502, the mounting rod 501a movably penetrates through the movable plate 502 at the end away from the fixed plate 501 and is limited by the threaded nut 501b, and the threaded nut 501b is used to adjust the pre-tightening force of the compression spring 5.
[0031] The operation process of the embodiment is that the compression spring 5 is compressed by external force, so that the compression spring 5 exerts pressure on the outer ring 1, the outer ring 1 is pressed to the steel ball 4 under the action of the pressure, and the inner ring 2 is axially positioned, so that the outer ring 1, the inner ring 2 and the steel ball 4 are always in contact and pre-tightening state, thereby eliminating the influence of the single-row angular contact ball bearing under the combined load without pre-tightening, which reduces the bearing rotation accuracy and rigidity, increases the vibration and noise, and shortens the bearing life.
[0032] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0033] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application.
Claims
1. A spring-loaded angular contact ball bearing, comprising an outer ring (1), an inner ring (2) disposed inside the outer ring (1), and a cage (3) disposed between the outer ring (1) and the inner ring (2), wherein a plurality of steel balls (4) are movably connected to the cage (3), characterized in that: A plurality of mounting holes (102) are equidistantly arranged on one side outer wall of the outer ring (1) along the circumferential direction, and a fixing plate (501) is fixedly connected inside part of the mounting holes (102), one side of the fixing plate (501) is movably connected with a movable plate (502), and the movable plate (502) is located outside the mounting hole (102), and a compression spring (5) is fixedly connected between the fixing plate (501) and the movable plate (502).
2. The spring preloaded angular contact ball bearing of claim 1, wherein, An inner channel (101) is arranged on the inner circumferential surface of the outer ring (1), and an outer channel (201) is arranged on the outer circumferential surface of the inner ring (2), the steel ball (4) is arranged between the inner channel (101) and the outer channel (201), and the steel ball (4) has a certain contact angle with the inner channel (101) and the outer channel (201) and can roll flexibly.
3. The spring preloaded angular contact ball bearing of claim 1, wherein, A plurality of pocket holes (301) for mounting the steel ball (4) are equidistantly arranged on the retainer (3) along the circumferential direction, and the number of the pocket holes (301) is consistent with the number of the steel ball (4).
4. The spring preloaded angular contact ball bearing of claim 1, wherein, A plug block (103) is clamped in each mounting hole (102) without the compression spring (5), and the plug block (103) is fixedly connected with an anti-skid sleeve (104) at one end outside the mounting hole (102).
5. The spring preloaded angular contact ball bearing of claim 1, wherein, An installation rod (501a) is fixedly connected on the outer wall of one side of the fixing plate (501) close to the movable plate (502), one end of the installation rod (501a) away from the fixing plate (501) movably penetrates through the movable plate (502) and is connected with a limiting nut (501b) through screw connection, and the limiting nut (501b) is used for adjusting the pre-tightening force of the compression spring (5).