High-speed bearing for driving motor

Abstract

The utility model relates to the technical field of bearing parts, in particular to a high-speed bearing for a driving motor. A bearing of a new energy automobile is arranged on a motor shaft and is provided with a fixed end and a floating end bearing, an outer ring of the floating end is easy to run and creep when the floating end runs at a high speed, so that frictional wear is generated between the outer ring of the bearing and a seat, and the use is influenced; in addition, electrocorrosion causes premature failure of inner and outer rings and steel balls. A high-speed bearing for a driving motor comprises an outer ring, an inner ring, a rolling body and a retainer, the outer ring is formed by combining a first outer ring and a second outer ring, and a groove set of the first outer ring and a protrusion set of the second outer ring are combined; first grooves are formed in the two sides of the groove set, second grooves are formed in the opposite sides of the groove set, first clamping rings are arranged on the two sides of the protrusion set, second clamping rings are arranged on the opposite sides of the protrusion set, the first grooves are combined with the first clamping rings, and the second grooves are combined with the second clamping rings. The structure is reasonable and stable, the groove sets are matched with the boss sets in the circumferential direction, and the clamping rings are matched with the grooves in the axial direction.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing parts, and more specifically to a high-speed bearing for a driving motor. Background Art

[0002] New energy vehicles are the direction of future automobile development. Drive motors are an important component of new energy vehicles. The performance of high-speed bearings used in drive motors directly determines the performance of drive motors. Since the bearings are installed on the motor shaft, there are fixed end bearings and floating end bearings. When the floating end bearings are running at high speed, the outer rings are prone to run in circles and creep, resulting in friction and wear between the outer rings of the bearings and the bearing seats, affecting the use of the bearings. In addition, the inner and outer rings and steel balls fail prematurely due to electrical corrosion. Utility Model Content

[0003] The utility model aims to provide a high-speed bearing for driving a motor with a reasonable structure and a long service life in view of the deficiencies in the prior art.

[0004] A high-speed bearing for a driving motor includes an outer ring, an inner ring, a plurality of rolling elements and a retaining frame, wherein the outer ring is formed by combining a first outer ring with a second outer ring, and is formed by combining a groove group of the first outer ring with a protrusion group of the second outer ring; a first groove is arranged on both sides of the groove group, and a second groove is arranged on the opposite side of the groove group; a first retaining ring is arranged on both sides of the protrusion group, and a second retaining ring is arranged on the opposite side of the protrusion group; the first groove is combined with the first retaining ring, and the second groove is combined with the second retaining ring. The utility model has a reasonable structure, and adopts a multi-equal groove group to match with a boss group in the circumferential direction, and adopts a retaining ring to match with a groove in the axial direction, and has a stable structure.

[0005] As a further improvement and supplement to the above solution, the utility model also includes the following additional technical features:

[0006] The first outer ring is made of metal material; the second outer ring is made of non-metallic material (non-conductive material). The outer diameter of the outer ring is covered with non-metallic (non-conductive) material to cut off the current from the outer ring to the steel ball and the inner ring, thus avoiding electrical corrosion of the inner and outer rings of the bearing and the steel ball, and extending the service life.

[0007] The cage comprises a main body, on which are arranged a plurality of spherical grooves for evenly distributed rolling bodies, V-shaped opening grooves spaced apart from the spherical grooves, and arc grooves arranged on the upper sides of the V-shaped opening grooves. The cage has a reasonable structure, good combination performance, and good elasticity.

[0008] The number of the groove groups of the first outer ring and the number of the protrusion groups of the second outer ring are 9 respectively, and the combination effect is good.

[0009] The groove group and the protrusion group are sawtooth structures, which are easy to process and have good combination effect.

[0010] The two first clamping rings are symmetrically arranged, and the first clamping ring is an arc transition angle structure. The structure is reasonable, and the combination is stable and reliable.

[0011] The following beneficial effects can be achieved by using the utility model: the utility model has a reasonable structure and a long service life. The outer diameter of the outer ring is covered with a non-metallic (non-conductor) material to cut off the current transmitted from the outer ring to the steel ball and the inner ring, thereby avoiding electrical corrosion of the inner and outer rings of the bearing and the steel ball. Considering that the non-metallic layer and the outer ring are not easy to fall off, a 9-equally divided sawtooth shape distribution is adopted in the circumferential direction, which is easy to process. In the axial direction, grooves and bosses are matched to prevent the non-metallic layer from falling off under high-speed conditions and axial pre-tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is the front view of the utility model.

[0014] Figure 3 It is a top view of the utility model.

[0015] Figure 4 It is a structural schematic diagram of the retaining frame 4 in the utility model.

[0016] Figure 5 It is a schematic structural diagram of the first outer ring 11 in the utility model.

[0017] Figure 6 It is a front view of the first outer ring 11 in the utility model.

[0018] Figure 7 It is a left view of the first outer ring 11 in the utility model.

[0019] Figure 8 It is a schematic structural diagram of the second outer ring 12 in the utility model.

[0020] Fig. 9 It is a front view of the second outer ring 12 in the present utility model. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-9 As shown, the utility model is a high-speed bearing for a driving motor.

[0023] The high-speed bearing for driving motor described in this embodiment comprises an outer ring 1, an inner ring 2, a plurality of rolling elements 3 and a retaining frame 4. The outer ring 1 is formed by combining a first outer ring 11 and a second outer ring 12. In the circumferential direction, the groove group 111 of the first outer ring 11 and the protrusion group 121 of the second outer ring 12 are combined. The first groove 112 is provided on both sides of the groove group 111, and the second groove 113 is provided on the opposite side of the groove group 111. The first snap ring 122 is provided on both sides of the protrusion group 121, and the second snap ring 123 is provided on the opposite side of the protrusion group 121. The first groove 112 and the first snap ring 122 are engaged, and the second groove 113 and the second snap ring 123 are engaged, that is, they are combined and fixed in the axial direction. The circumferential direction and the axial direction are combined and fixed respectively, and the structure is stable and reliable.

[0024] Furthermore, the first outer ring 11 is made of metal material and the second outer ring 12 is made of non-metallic material, that is, non-conductor, which cuts off the current from the outer ring to the steel ball and the inner ring, thereby avoiding electrical corrosion of the inner and outer rings of the bearing and the steel ball.

[0025] Furthermore, the retaining frame 4 includes a main body 41, on which are provided a plurality of spherical grooves 42 for evenly distributing the rolling elements 3, V-shaped opening grooves 44 spaced apart from the spherical grooves 42, arc grooves 43 arranged on the upper sides of the V-shaped opening grooves 44, and arc spacing between the arc grooves 43 on both sides and the spherical grooves 42, which reduces weight and does not generate stress.

[0026] Furthermore, in this embodiment, the number of the groove groups 111 of the first outer ring 11 and the number of the protrusion groups 121 of the second outer ring 12 are 9 respectively.

[0027] Furthermore, the groove group 111 and the protrusion group 121 are sawtooth structures for the convenience of processing.

[0028] Furthermore, the two first snap rings 122 are symmetrically arranged, and the first snap ring 122 is an angle structure with arc transition, and correspondingly, the second groove 113 and the two first snap rings 122 are matched with each other.

[0029] The above are preferred implementations of the present invention, which do not limit the protection scope of the present invention. Any modifications and improvements made by those skilled in the art based on the design ideas of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A high-speed bearing for a drive motor, comprising an outer ring (1), an inner ring (2), a plurality of rolling elements (3) and a retaining frame (4), characterized in that: The outer ring (1) is formed by combining a first outer ring (11) and a second outer ring (12), and is composed of a groove group (111) of the first outer ring (11) and a protrusion group (121) of the second outer ring (12); a first groove (112) is provided on both sides of the groove group (111), and a second groove (113) is provided on the opposite side of the groove group (111); a first retaining ring (122) is provided on both sides of the protrusion group (121), and a second retaining ring (123) is provided on the opposite side of the protrusion group (121); the first groove (112) and the first retaining ring (122) are combined, and the second groove (113) and the second retaining ring (123) are combined.

2. The high-speed bearing for a drive motor according to claim 1, characterized in that: The first outer ring (11) is made of metal; the second outer ring (12) is made of a non-metallic material, and is a non-conductive material.

3. The high-speed bearing for a drive motor according to claim 1, characterized in that: The retaining frame (4) comprises a main body (41) on which are arranged a plurality of spherical grooves (42) for evenly distributing rolling elements (3), V-shaped opening grooves (44) spaced apart from the spherical grooves (42), and arc grooves (43) arranged on the upper sides of the V-shaped opening grooves (44).

4. The high-speed bearing for a drive motor according to claim 1, characterized in that: The number of the groove groups (111) of the first outer ring (11) and the number of the protrusion groups (121) of the second outer ring (12) are 9 respectively.

5. The high-speed bearing for a drive motor according to claim 4, characterized in that: The groove group (111) and the protrusion group (121) are sawtooth structures.

6. The high-speed bearing for a drive motor according to claim 1, characterized in that: The two first clamping rings (122) are symmetrically arranged, and the first clamping ring (122) is an angle structure with an arc transition.

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