Ball bearing outer ring fixing structure
By using a ball bearing outer ring fixing structure, interference fit, and spring compression limit card, the problem of inconsistent motor preload is solved, resulting in consistent motor sound and improved sealing performance, which facilitates automated assembly.
Patent Information
- Application Number
- CN202520375212.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-05
AI Technical Summary
The manufacturing and assembly tolerances of existing ball bearings result in different preload forces for each motor, affecting the consistency of sound and the inconsistent direction of preload force during forward and reverse rotation, thus impacting motor production and use.
The structure employs a ball bearing outer ring fixing structure, including components such as a housing, rotor shaft, sealing ring, limit card, and spring. Sealing and limiting are achieved through interference fit and spring compression, preventing relative displacement of the bearing and ensuring sealing effect and limiting function.
It achieves stable fixing of the outer ring of the ball bearing, prevents relative movement, improves the consistency of motor sound and waterproof and dustproof effects, and facilitates automated assembly.
Smart Images
Figure CN223690207U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a ball bearing technical field, in particular to a ball bearing outer ring fixing structure. BACKGROUND
[0002] The ball bearing assembly form is more for the wave pad of the outer ring, spring check ring or the rubber ring of the outer ring direct inlay when the ball bearing supplier material, prevent the relative movement of the outer ring, but the scheme can due to the manufacturing tolerance and assembly tolerance of parts, lead to the pre-tightening force of each motor is different, thereby leading to the sound consistency of the motor is not good, and for the motor with positive and negative rotation demand in the axial direction, in the positive and negative rotation process, also can lead to the pre-tightening force positive and negative direction is not consistent, is not conducive to the production and use of motor, for this purpose, we propose a ball bearing outer ring fixing structure. SUMMARY
[0003] In order to solve the above problems, the utility model provides a ball bearing outer ring fixing structure.The utility model solves the problem that the pre-tightening force of each motor is different due to the manufacturing tolerance and assembly tolerance of parts, thereby leading to the sound consistency of the motor is not good, and for the motor with positive and negative rotation demand in the axial direction, in the positive and negative rotation process, also can lead to the pre-tightening force positive and negative direction is not consistent, is not conducive to the use of motor.
[0004] The ball bearing outer ring fixing structure in the utility model, including the casing, the one side of casing is inserted with rotor shaft, the one end of rotor shaft in casing is sleeved with ball bearing, the outer side of ball bearing far away from casing one side is sleeved with sealing ring, the one side of sealing ring far away from ball bearing in casing is equipped with limit card, the one side end of casing far away from rotor shaft is equipped with sealing cover plate, the one side of sealing cover plate in casing is equipped with four matrix arrangement spring, the one side of spring far away from sealing cover plate is fixedly connected with pressing block.
[0005] In the above scheme, the casing is provided with a limit ring table matched with the sealing ring.
[0006] In the above scheme, the limit card is a bowl type.
[0007] In the above scheme, the pressing block is provided with an arc surface matched with the limit card on the side close to the limit card.
[0008] In the above scheme, the outer side of the sealing ring is provided with two equidistantly arranged annular expansion ribs, and the casing is provided with a clamping groove matched with the annular expansion rib.
[0009] In the above scheme, the sealing cover plate and the casing are fixedly connected through bolts.
[0010] The utility model discloses a ball bearing outer ring fixing structure, ball bearing inner ring and rotor shaft interference fit, sealing ring and shell interference fit to complete sealing, and ball bearing far from sealing ring one end outside and shell interference fit, thereby effectively prevent ball bearing and shell relative displacement, under the action of spring elasticity, the pressing block extrudes the limit card, makes the limit card and sealing ring can carry out the close sealing, thereby reach the dustproof waterproof purpose to bearing outer ring, and the limit card can limit sealing ring, thereby avoided the phenomenon that sealing ring position occurs. BRIEF DESCRIPTION OF DRAWINGS
[0011] 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, not 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.
[0012] Fig. 1 It is the sectional view of the utility model;
[0013] Fig. 2 It is the structure schematic diagram of A part of the utility model.
[0014] In the drawing: 1, shell 2, rotor shaft 3, ball bearing 4, sealing ring
[0015] 5, limit ring table 6, limit card 7, sealing cover plate 8, spring
[0016] 9, pressing block 10, annular expansion rib 11, card slot 12, bolt. DETAILED DESCRIPTION
[0017] The specific implementation of the utility model will be further described below in combination with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.
[0018] As Figs. 1-2The utility model discloses a ball bearing outer ring fixing structure, including the casing 1, the casing 1 one side inserts rotor shaft 2, rotor shaft 2 is located in the casing 1 inside one end sleeve and connects ball bearing 3, and the inner ring of ball bearing 3 is with rotor shaft 2 interference fit, the outer side sleeve of ball bearing 3 is away from the casing 1 one side and connects sealing ring 4, and sealing ring 4 is with casing 1 interference fit to complete sealing, and the outer side of ball bearing 3 is away from sealing ring 4 one end and is with casing 1 interference fit, to effectively prevent ball bearing 3 and casing 1 from happening relative displacement, the casing 1 inside is located sealing ring 4 and is away from ball bearing 3 one side and is equipped with limit card 6, the casing 1 is away from rotor shaft 2 one side end and is equipped with sealing cover plate 7, the sealing cover plate 7 is located in the casing 1 one side and is equipped with four matrix arrangement's spring 8, the spring 8 is away from sealing cover plate 7 one side and is fixedly connected with pressure block 9, when sealing cover plate 7 and casing 1 are tightly connected, spring 8 is compressed under force, under the spring 8 elasticity, pressure block 9 extrudes limit card 6, so that limit card 6 and sealing ring 4 can carry out the tight sealing of between, to reach the dustproof waterproof purpose of bearing outer ring, and limit card 6 can limit sealing ring 4, to avoid the phenomenon that sealing ring 4 occurs position.
[0019] The casing 1 is equipped with the limit ring table 5 matched with the sealing ring 4 in the casing 1, and the limit ring table 5 can limit the sealing ring 4.
[0020] The limit card 6 is a bowl type.
[0021] The pressure block 9 is equipped with the arc surface matched with the limit card 6 on the side close to the limit card 6, and the arc surface of the pressure block 9 makes the pressure block 9 and the limit card 6 more fit.
[0022] The sealing ring 4 is equipped with the two equidistantly-arranged annular expansion muscles 10 on the outer side, the casing 1 is provided with the clamping groove 11 matched with the annular expansion muscle 10, the annular expansion muscle 10 is clamped in the clamping groove 11, and the sealing ring 4 can be more stably fixed in the casing 1 through the cooperation between the annular expansion muscle 10 and the clamping groove 11.
[0023] The sealing cover plate 7 and the casing 1 are fixedly connected through the bolt 12.
[0024] Specifically, in the utility model, the inner ring of the ball bearing 3 is in interference fit with the rotor shaft 2, the sealing ring 4 is in interference fit with the shell 1 to complete sealing, and the outer side of the end of the ball bearing 3 away from the sealing ring 4 is in interference fit with the shell 1, thereby effectively preventing the ball bearing 3 from being relatively displaced with the shell 1; when the sealing cover plate 7 is tightly connected with the shell 1, the spring 8 is compressed under stress, under the action of the elasticity of the spring 8, the pressing block 9 extrudes the limiting card 6, so that the limiting card 6 and the sealing ring 4 can be tightly sealed, thereby achieving the purpose of preventing dust and water from entering the outer ring of the bearing, and meanwhile, the limiting card 6 can limit the sealing ring 4, thereby avoiding the phenomenon that the sealing ring 4 is out of position.
[0025] The above merely describes the preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A ball bearing outer ring fixing structure comprising a housing (1), characterized in that, The shell (1) is inserted with a rotor shaft (2) on one side, the rotor shaft (2) is sleeved with a ball bearing (3) at one end in the shell (1), the ball bearing (3) is sleeved with a sealing ring (4) on the outer side away from the shell (1), the shell (1) is provided with a limiting card (6) on the side away from the ball bearing (3) of the sealing ring (4), the shell (1) is provided with a sealing cover plate (7) on the side away from the rotor shaft (2) of the end, the sealing cover plate (7) is provided with four springs (8) arranged in matrix on one side in the shell (1), the spring (8) is fixedly connected with a pressing block (9) on the side away from the sealing cover plate (7).
2. A ball bearing outer ring fixing structure according to claim 1, wherein The shell (1) is provided with a limiting ring table (5) matched with the sealing ring (4) in the shell (1).
3. The ball bearing outer ring fixation structure of claim 1, wherein The limiting card (6) is bowl-shaped.
4. A ball bearing outer ring fixing structure according to claim 3, wherein The pressing block (9) is provided with an arc surface matched with the limiting card (6) on the side close to the limiting card (6).
5. The ball bearing outer ring fixation structure of claim 1, wherein The sealing ring (4) is provided with two annular expansion tendons (10) arranged at equal intervals on the outer side, and the shell (1) is provided with a clamping groove (11) matched with the annular expansion tendon (10).
6. The ball bearing outer race retaining structure of claim 1 wherein, The sealing cover plate (7) and the shell (1) are fixedly connected through a bolt (12).