Deep groove ball bearing assembly for motor shaft

Abstract

The utility model provides a deep groove ball bearing assembly for a motor shaft, and belongs to the technical field of bearings. The problem that an existing motor bearing is inconvenient to dissipate heat and lubricate is solved. The deep groove ball bearing assembly for the motor shaft comprises a bearing body arranged on the motor shaft in a sleeving mode, the bearing body is composed of an outer sleeve, two retainers and a plurality of rolling bodies, the rolling bodies are arranged on the two retainers respectively, and the outer sleeve is arranged on the motor shaft and connected with the motor shaft. The two retainers are also arranged on the motor shaft in a sleeving mode and connected with the motor shaft, the retainers are located between the outer sleeve and the motor shaft, oil injection holes are formed in the peripheral walls, corresponding to the retainers, of the outer sleeve, and first sealing units are arranged at the positions, corresponding to the oil injection holes, of the outer sleeve; sealing units II which are connected with the outer sleeve and are used for sealing the outer sleeve are arranged at the openings in the two ends of the outer sleeve. The motor has the advantages of being convenient to lubricate and having a heat dissipation effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings and relates to a deep groove ball bearing assembly for a motor shaft. Background Art

[0002] Motor bearings are special bearings used on motor shafts to support and guide the movement of the motor shaft. The commonly used bearing structure is a rolling steel ball structure. The friction is reduced by rolling smooth metal balls on the metal surfaces of the inner and outer rings of the bearings, thereby supporting the rotation of the supported motor shaft and enabling the motor to rotate stably. Long-term high-speed rotation of the motor will cause certain wear on the bearings, and the rotating friction of the rolling steel balls in the motor bearings requires the use of lubricating oil for protection. However, existing motor bearings cannot independently add and maintain the lubricating oil applied to the balls and the inner walls of the metal rings, so that the maintenance of the bearings requires multiple disassembly, which increases the time of the bearing maintenance steps. At the same time, the motor bearing part will generate a certain amount of heat after long-term high-speed friction and rotation, which makes the bearing easy to produce high-temperature ablation with the voltage and current in the motor, thereby causing damage to the motor bearings. However, existing motor bearings cannot independently judge the temperature of the bearing working environment, thereby reducing the service life of the motor bearings. Summary of the invention

[0003] The utility model aims to solve the above problems existing in the prior art and provides a deep groove ball bearing assembly which is easy to lubricate and has heat dissipation effect.

[0004] The purpose of the utility model can be achieved through the following technical solutions: A deep groove ball bearing assembly for a motor shaft, comprising a bearing body sleeved on the motor shaft, characterized in that the bearing body is composed of an outer sleeve, two retaining frames and a plurality of rolling elements, and the plurality of rolling elements are respectively arranged on the two retaining frames, the outer sleeve is on the motor shaft and connected thereto, the two retaining frames are also sleeved on the motor shaft and connected thereto, the retaining frame is located between the outer sleeve and the motor shaft, and the two retaining frames are respectively located at the two ends of the outer sleeve, and the rolling elements are in conflict with the motor shaft and the outer sleeve through the retaining frame, an oil filling hole is opened on the outer peripheral wall of the outer sleeve at the corresponding retaining frame, a sealing unit 1 connected to the outer sleeve and used to seal the oil filling hole is arranged at the corresponding oil filling hole on the outer sleeve, and a sealing unit 2 connected to the outer sleeve and used to seal the outer sleeve is arranged at the openings at both ends of the outer sleeve.

[0005] In the above-mentioned deep groove ball bearing assembly for a motor shaft, an arc groove matching with the rolling body is formed on the outer peripheral wall of the motor shaft, and an arc groove matching with the rolling body is also formed on the inner peripheral wall of the outer sleeve.

[0006] In the above-mentioned deep groove ball bearing assembly for a motor shaft, an annular groove is provided on the outer peripheral wall of the outer sleeve at the oil filling hole for facilitating the installation of a sealing unit 1, and the sealing unit 1 is a retaining ring.

[0007] In the above-mentioned deep groove ball bearing assembly for a motor shaft, both end faces of the outer sleeve are provided with annular grooves which are axially recessed inward and for the sealing unit 2 to abut against. The outer sleeve is provided with a limit ring connected to the annular groove and used to limit the position of the sealing unit 2 and make it abut against the outer sleeve. The sealing unit 2 is composed of an outer ring plate, a middle ring plate and an inner ring plate, and the outer ring plate, the middle ring plate and the inner ring plate are connected by a number of studs. The inner edges of the outer ring plate and the inner ring plate are provided with folded edges, and a spacing is left between the outer ring plate and the inner ring plate through the folded edges.

[0008] In the above-mentioned deep groove ball bearing assembly for a motor shaft, a convex ring portion which protrudes radially inward and cooperates with a limiting ring is provided on the inner wall of the outer end portion of the outer sleeve. The limiting ring is made of an elastic material, and a groove is provided on the limiting ring, and a plurality of notched grooves are provided on the limiting ring along its circumferential direction.

[0009] Compared with the prior art, the deep groove ball bearing assembly for the motor shaft has the following advantages:

[0010] 1. The bearing body is composed of an outer sleeve, two retainers and a plurality of rolling elements, and the plurality of rolling elements are respectively arranged on the two retainers. The outer sleeve is on and connected to the motor shaft, and the two retainers are also sleeved on and connected to the motor shaft. The retainer is located between the outer sleeve and the motor shaft, and the two retainers are respectively located at the two ends of the outer sleeve, and the rolling elements are in conflict with the motor shaft and the outer sleeve through the retainer. An oil filling hole is provided on the outer peripheral wall of the outer sleeve at the corresponding retainer, and a sealing unit 1 connected to the outer sleeve and used for sealing the oil filling hole is provided at the corresponding oil filling hole on the outer sleeve, and a sealing unit 2 connected to the outer sleeve and used for sealing the outer sleeve is provided at the openings at both ends of the outer sleeve. The arrangement of the above structure is convenient for lubrication and has the advantages of heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a schematic diagram of the cross-sectional structure of a bearing body in a deep groove ball bearing assembly for a motor shaft.

[0012] In the figure, 1, outer sleeve; 2, retaining frame; 3, rolling element; 4, snap ring; 5, outer ring plate; 6, middle ring plate; 7, inner ring plate; 8, folded edge; 9, convex ring part. DETAILED DESCRIPTION

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figure 1 As shown, the deep groove ball bearing assembly for the motor shaft includes a bearing body sleeved on the motor shaft, the bearing body is composed of an outer sleeve, two retaining frames and a plurality of rolling elements, and the plurality of rolling elements are respectively arranged on the two retaining frames, the outer sleeve is on the motor shaft and connected thereto, the two retaining frames are also sleeved on the motor shaft and connected thereto, the retaining frame is located between the outer sleeve and the motor shaft, and the two retaining frames are respectively located at the two ends of the outer sleeve, and the rolling elements are in conflict with the motor shaft and the outer sleeve through the retaining frame, an oil filling hole is provided on the outer peripheral wall of the outer sleeve at the corresponding retaining frame, a sealing unit 1 connected to the outer sleeve and used for sealing the oil filling hole is provided at the corresponding oil filling hole on the outer sleeve, a sealing unit 2 connected to the outer sleeve and used for sealing the outer sleeve is provided at the openings at both ends of the outer sleeve, an annular groove for facilitating the installation of the sealing unit 1 is provided on the outer peripheral wall of the outer sleeve at the oil filling hole, and the sealing unit 1 is a retaining ring The clamping ring can be composed of two half rings spliced ​​together, and the clamping ring can also be provided with a groove seam, which is fixedly connected by screws. Both end surfaces of the outer sleeve are provided with annular grooves that are axially recessed inwardly and for the sealing unit to contact. The outer sleeve is provided with a limit ring connected to it at the annular groove and used to limit the position of the sealing unit and make it contact with the outer sleeve. The sealing unit is composed of an outer ring plate, a middle ring plate and an inner ring plate, and the outer ring plate, the middle ring plate and the inner ring plate are all connected by a number of studs. The inner edges of the outer ring plate and the inner ring plate are provided with folded edges. The outer ring plate and the inner ring plate are spaced apart from the middle ring plate by the folded edges. The sealing unit is provided with a sealing ring at the spacing. A convex ring portion that radially protrudes inwardly and cooperates with the limit ring is provided on the inner wall of the outer end portion of the outer sleeve. The limit ring is made of elastic material, a groove seam is provided on the limit ring, and a number of notch grooves arranged along its circumferential direction are provided on the limit ring.

[0015] As a preferred structure, an arc groove matching with the rolling body is formed on the outer peripheral wall of the motor shaft, and an arc groove matching with the rolling body is also formed on the inner peripheral wall of the outer sleeve.

[0016] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0017] Although the term ", " and " are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A deep groove ball bearing assembly for a motor shaft, comprising a bearing body sleeved on the motor shaft, characterized in that: The bearing body is composed of an outer sleeve (1), two retaining frames (2) and a plurality of rolling bodies (3), and the plurality of rolling bodies (3) are respectively arranged on the two retaining frames (2). The outer sleeve (1) is on and connected to the motor shaft, and the two retaining frames (2) are also sleeved on and connected to the motor shaft. The retaining frame (2) is located between the outer sleeve (1) and the motor shaft, and the two retaining frames (2) are respectively located at the two ends of the outer sleeve (1), and the rolling bodies (3) are in contact with the motor shaft and the outer sleeve (1) through the retaining frames (2). An oil filling hole is opened on the outer peripheral wall of the outer sleeve (1) at the corresponding retaining frame (2), and a sealing unit 1 connected to the outer sleeve and used for sealing the oil filling hole is arranged on the outer sleeve (1) at the corresponding oil filling hole, and a sealing unit 2 connected to the outer sleeve and used for sealing the outer sleeve (1) is arranged at the openings at both ends of the outer sleeve (1).

2. A deep groove ball bearing assembly for a motor shaft according to claim 1, characterized in that: An arc-shaped groove matching the rolling body (3) is formed on the outer peripheral wall of the motor shaft, and an arc-shaped groove matching the rolling body (3) is also formed on the inner peripheral wall of the outer sleeve (1).

3. A deep groove ball bearing assembly for a motor shaft according to claim 1, characterized in that: An annular groove is provided on the outer peripheral wall of the outer sleeve (1) at the oil filling hole to facilitate the installation of a sealing unit 1, and the sealing unit 1 is a clamping ring (4).

4. A deep groove ball bearing assembly for a motor shaft according to claim 1, characterized in that: Both end surfaces of the outer sleeve (1) are provided with annular grooves which are axially recessed inwards and for the sealing unit 2 to abut against each other. The outer sleeve (1) is provided with a limit ring connected to the annular groove and used to limit the position of the sealing unit 2 and make it abut against the outer sleeve (1). The sealing unit 2 is composed of an outer ring plate (5), a middle ring plate (6) and an inner ring plate (7), and the outer ring plate (5), the middle ring plate (6) and the inner ring plate (7) are connected by a plurality of studs. The inner edges of the outer ring plate (5) and the inner ring plate (7) are provided with folded edges (8), and a spacing is left between the outer ring plate (5) and the inner ring plate (7) and the middle ring plate (6) through the folded edges (8).

5. A deep groove ball bearing assembly for a motor shaft according to claim 1, characterized in that: The inner wall of the outer end of the outer sleeve (1) is provided with a convex ring portion (9) which protrudes radially inward and cooperates with a limiting ring. The limiting ring is made of elastic material, has a groove slit, and has a plurality of notched grooves arranged along its circumferential direction.

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