High-speed deep groove ball bearing for new energy automobile driving motor

Abstract

The utility model relates to the technical field of bearings, and provides a high-speed deep groove ball bearing for a driving motor of a new energy automobile, which comprises a retainer, an outer ring is arranged at the bottom end of the retainer, an inner ring is arranged at the upper end of the outer ring, a stepped groove is arranged at the top end of one side of the outer ring, a plurality of ball pockets are arranged at the top end of the inner ring in a penetrating manner, and the ball pockets are arranged in the stepped groove. The multiple ball pockets are annularly arrayed at the top end of the inner ring, grease storage grooves are formed in the bottom ends of the multiple ball pockets and used for storing more lubricating grease, closed type oil storage grooves are formed in the two sides of the multiple ball pockets, and through type oil storage grooves are formed between the multiple closed type oil storage grooves, so that the lubricating grease can conveniently enter the inner space of the bearing; according to the utility model, the design of improving and optimizing the retainer structure and adding the grease storage groove is provided, so that the lubricating grease can be well stored, a reliable oil film is formed, the calorific value of the bearing during working is reduced, heat dissipation in a high-speed state is realized, and the sealing grease storage performance is ensured, so that the service life of the bearing is prolonged, and a better optimization design result is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and in particular to a high-speed deep groove ball bearing for a drive motor of a new energy vehicle. Background Art

[0002] The rapid development of bearing technology for new energy vehicle drive motors has placed higher demands on bearing performance, including long life, high speed, rapid acceleration, high impact forces, and excellent sealing performance. Existing deep groove ball bearings used in new energy vehicle drive motors often suffer from insufficient lubrication and temperature rise, leading to reduced lifespan. This is attributed to the cage structure's poor heat dissipation and insufficient lubrication. While conventional cages have an oil reservoir on the underside, it is enclosed (not through), allowing grease to accumulate there. This structural limitation results in poor dynamic lubrication. This structure ineffectively distributes the stored grease, hindering its entry into the bearing's internal working surfaces during operation. This results in uneven oil film distribution, preventing some grease from participating in lubrication and unsatisfactory lubrication. This poor lubrication leads to excessive temperature rise, limiting the bearing's speed increase and reducing friction torque and noise. Utility Model Content

[0003] The utility model proposes a high-speed deep groove ball bearing for a new energy vehicle drive motor, which solves the problem in the related art that the structure cannot effectively transport the stored grease, and the grease cannot easily enter the internal working surface of the bearing during operation, resulting in uneven distribution of the formed oil film, part of the grease cannot participate in lubrication, and the lubrication effect is not ideal. As a result, the temperature rise caused by poor lubrication is too high, which limits the increase in bearing speed and the reduction of friction torque and noise.

[0004] The technical solution of the utility model is as follows: A high-speed deep groove ball bearing for a new energy vehicle drive motor, comprising: a retaining frame, an outer ring is provided at the bottom end of the retaining frame, an inner ring is provided at the upper end of the outer ring, a stepped groove is provided at the top end of one side of the outer ring, a plurality of ball pockets are provided through the top end of the inner ring, a plurality of the ball pockets are arranged in a circular array at the top end of the inner ring, a grease storage groove is provided at the bottom end of a plurality of the ball pockets for storing more grease, closed oil storage tanks are provided on both sides of a plurality of the ball pockets, and a through oil storage tank is provided between a plurality of the closed oil storage tanks to facilitate the entry of grease into the internal space of the bearing.

[0005] Preferably, a connecting bridge is provided at the top of both sides of several of the ball pockets, and the connecting bridge and the locking arm are an integrated structure.

[0006] Preferably, locking arms are provided on both sides of the top ends of several of the connecting bridges.

[0007] Preferably, the retaining frame is made of PA-GF.

[0008] Preferably, the retaining frame has high wear resistance, high hardness, high strength and high toughness.

[0009] Preferably, several of the locking arms are elastically arranged.

[0010] Preferably, several ball pockets are connected to the grease storage groove.

[0011] The working principle and beneficial effects of the utility model are as follows:

[0012] The optimized retainer in this utility model significantly reduces its mass while also reducing the frictional resistance of the bearing itself, making the bearing more flexible. After multiple batches of installation and use, the results have been excellent, achieving the desired improvement. This solves the problem of poor grease lubrication channels caused by structural limitations in standard deep groove ball bearing retainers, promoting grease participation in bearing lubrication, ensuring smooth operation, increasing bearing speed, and reducing friction torque and noise. The inner ring grease reservoir design reduces the contact surface between the steel ball and the inner ring groove of the bearing, facilitating heat dissipation at high speeds. The design offers low friction, low temperature rise, and smooth high-speed operation, extending lubrication and bearing life.

[0013] The utility model can better realize the lubrication of the high-speed ball bearings of the drive motor, meet the market demand of the bearing drive system of new energy vehicles, solve the problems of insufficient lubrication and temperature rise that often occur in the deep groove ball bearings used in the drive motors of new energy vehicles during use, and improve the overall performance and reliability of the bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the front structure proposed by the utility model;

[0016] Figure 2 This is a rear view structural diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the through-type oil storage tank proposed in the utility model;

[0018] Figure 4 This is a schematic diagram of the top view structure proposed by the utility model;

[0019] In the figure: 1. Cage; 2. Outer ring; 3. Stepped groove; 4. Inner ring; 5. Closed oil reservoir; 6. Through oil reservoir; 7. Grease reservoir; 8. Ball pocket; 9. Connecting bridge; 10. Locking arm. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The present application discloses a high-speed deep groove ball bearing for a new energy vehicle drive motor. Figures 1-4A high-speed deep groove ball bearing for a new energy vehicle drive motor comprises: a cage 1, the cage 1 is made of PA46-GF30, an outer ring 2 is provided at the bottom end of the cage 1, the cage 1 is made of PA46-GF30, which has high wear resistance, high hardness, high strength and high toughness, an inner ring 4 is provided at the upper end of the outer ring 2, and some materials are reduced on the outer side of the inner ring 4 of the cage 1, thereby reducing the contact area between the cage 1 and the steel ball. By reducing the friction between the steel ball and the pocket of the cage 1, the purpose of reducing the friction torque is achieved, which is conducive to the realization of low torque of the bearing, and a stepped groove 3 is provided on the top of one side of the outer ring 2. The stepped groove 3 is a stepped outer wall designed on the outer ring 2 to reduce the mass of the cage 1. It also reduces the centrifugal force of the retaining frame 1 when the bearing runs at high speed, which is beneficial to the increase of the bearing speed. Several ball pockets 8 are opened through the top of the inner ring 4. The friction between the steel ball and the pocket hole of the ball pocket 8 on the retaining frame 1 is reduced, which can also reduce the noise of the bearing. After reducing some materials, the center of mass position of the retaining frame 1 moves to the right, thereby reducing the deflection, making the retaining frame 1 run smoothly, and also reducing vibration noise. Several ball pockets 8 are arranged in a circular array at the top of the inner ring 4, and several ball pockets 8 are provided with grease storage grooves 7 at the bottom ends for storing more grease. The grease storage groove 7 is designed in the groove at the bottom end of the inner ball pocket 8 of the inner ring 4 to store more grease, which can ensure sufficient and longer-term lubrication of the bearing working surface, and form grease mist bubbles when running at high speed to seal the gap. The grease storage groove 7 of the inner ring 4 is designed to reduce the contact surface between the steel ball and the groove of the inner ring 4 of the bearing, which is convenient for heat dissipation under high-speed conditions. It has the characteristics of low friction, low temperature rise, and stable high-speed operation, which can extend lubrication and bearing life. Several ball pockets 8 are provided with closed oil storage tanks 5 on both sides, and several closed oil storage tanks 5 are provided with through-type oil storage tanks 6. A grease channel is opened in the axial direction of the retaining frame 1, and the outer wall is connected to the through-type oil storage tank 6. The grease can easily enter the internal space of the bearing, which improves the flow channel of the grease and is also conducive to the filling of the grease during assembly. It avoids the problem of the original structure that the grease can only be injected from the pocket hole direction. The existing through-type oil storage tank 6 grease can be injected from both the front and back directions, and the bearing work During operation, it is more conducive to the flow of internal grease, so that there is no dead corner where grease accumulates inside the bearing, and the grease is actively involved in replenishing the oil film to avoid excessive temperature rise due to poor lubrication, thereby improving the high-speed performance of the bearing, reducing the torque and noise of the bearing, and facilitating the entry of grease into the internal space of the bearing. Connecting bridges 9 are provided on the top of both sides of several ball pockets 8. The connecting bridges 9 and the locking arms 10 are an integrated structure for locking the steel balls placed inside the ball pockets 8 to increase the stability of the steel balls. Locking arms 10 are provided on both sides of the tops of several connecting bridges 9. The retaining frame 1 has high wear resistance, high hardness, high strength and high toughness. Several locking arms 10 are elastically set, and several ball pockets 8 are connected to the grease storage groove 7.

[0022] Working principle and usage process: The outer ring 2 of the retaining frame 1 is placed on the outside of the inner layer of the bearing, so that the outer side of the inner layer of the bearing fits into the inner wall of the outer ring 2. The ball pocket 8 of the inner ring 4 is used to place the steel ball of the bearing. The axial surface of the inner ring 4 reduces some material. After reducing the material, the part of the inner ring 4 material that is reduced is reduced in mass, which reduces the friction with the steel ball. The friction between the steel ball and the pocket hole of the ball pocket 8 on the retaining frame 1 is reduced, and the noise of the bearing is reduced. The grease storage groove 7 at the bottom of the ball pocket 8 is used to store grease during the operation of the steel ball. The closed oil storage tank 5 is used to store grease, and the through-type oil storage tank 6 is used to guide the grease to facilitate the flow of grease, thereby facilitating the grease to enter the interior of the bearing, increase the grease content on the surface of the steel ball, and reduce the friction generated when the steel ball is in operation. The connecting bridge 9 and the locking arm 10 are combined into an elastic limiting component, which is used to limit the steel ball so that the steel ball is limited inside the ball pocket 8, increasing the stability of the steel ball during operation and avoiding displacement of the steel ball during operation.

[0023] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-speed deep groove ball bearing for a new energy vehicle drive motor, comprising: A retainer (1), characterized in that an outer ring (2) is provided at the bottom end of the retainer (1), an inner ring (4) is provided at the upper end of the outer ring (2), a stepped groove (3) is provided at the top end of one side of the outer ring (2), a plurality of ball pockets (8) are provided through the top end of the inner ring (4), a plurality of the ball pockets (8) are arranged in a circular array at the top end of the inner ring (4), a grease storage groove (7) is provided at the bottom end of a plurality of the ball pockets (8) for storing more grease, a closed oil storage groove (5) is provided on both sides of a plurality of the ball pockets (8), and a through oil storage groove (6) is provided between a plurality of the closed oil storage grooves (5) to facilitate the entry of grease into the internal space of the bearing.

2. A high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 1, characterized in that: A connecting bridge (9) is provided at the top ends of both sides of a plurality of the ball pockets (8), and the connecting bridge (9) and the locking arm (10) are an integrated structure.

3. A high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 2, characterized in that: Locking arms (10) are provided on both sides of the top ends of the plurality of connecting bridges (9).

4. The high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 1, characterized in that: The retainer (1) is made of PA46-GF30.

5. The high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 1, characterized in that: The retaining frame (1) has high wear resistance, high hardness, high strength and high toughness.

6. A high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 3, characterized in that: Several locking arms (10) are elastically arranged.

7. A high-speed deep groove ball bearing for a new energy vehicle drive motor according to claim 1, characterized in that: A plurality of ball pockets (8) are connected to the fat storage groove (7).

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