Assembly bearing

Abstract

An assembly bearing comprises a core shaft, a bearing and a rotor cup, the bearing comprises an outer ring, an inner ring and a rolling body, the core shaft, the bearing and the rotor cup are sequentially assembled, a containing groove for containing the inner ring is formed in the core shaft, the depth of the containing groove is equal to the height of the inner ring, and an axial distance exists between the inner ring arranged in the containing groove and the core shaft. A gasket is fixed on the mandrel and used for applying pre-tightening force to the bearing and the mandrel, and a connecting hole is formed in the other end, opposite to the end provided with the gasket, of the mandrel. The bearing has the beneficial effects that the design improves the installation efficiency, the stability and the reliability of a product, and a bearing solution which is economical, efficient and easy to maintain is provided for customers.

Description

Technical Field

[0001] The utility model relates to a bearing, in particular to a component bearing. Background Art

[0002] The bearing components of a LiDAR are key to ensuring precise rotation. These components typically include bearings, a core shaft, and a rotor cup. The bearings support the LiDAR's rotating mechanism, allowing it to rotate smoothly during scanning. The core shaft serves as the axis of rotation, ensuring precise pointing of the LiDAR. The rotor cup connects to the LiDAR's scanning mechanism and works in conjunction with the bearings and core shaft to achieve high-precision rotation and positioning. The design and manufacturing precision of these components directly impacts the LiDAR's performance, including its scanning range, resolution, and reliability.

[0003] Currently, most bearing assembly systems on the market are based on a core shaft, bearing, and rotor cup, which are integrated into a single assembly. However, if these three components are designed to be flat for ease of assembly, problems with preload and accuracy may arise. If these three components are designed to be more unique to increase preload and accuracy, assembly becomes significantly more difficult for the user. Furthermore, regardless of the method, assembly can be complicated due to the different sources of the core shaft, bearing, and rotor cup. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a more integrated component bearing that takes into account aspects such as preload and precision.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a component bearing, comprising a core shaft, a bearing and a rotor cup, the bearing comprising an outer ring, an inner ring and a rolling element, the core shaft, the bearing and the rotor cup being assembled in sequence, the core shaft being provided with a placement groove for placing the inner ring, the depth of the placement groove being equivalent to the height of the inner ring and an axial spacing being present between the inner ring placed in the placement groove and the core shaft, a washer being fixed on the core shaft and the washer being used to apply a pre-tightening force to the bearing and the core shaft, and a connecting hole being provided at the other end of the core shaft opposite to where the washer is provided.

[0006] The beneficial effects of the present invention are as follows: the above scheme allows the core shaft, bearing and rotor cup to be assembled in sequence to form a compact whole, which greatly simplifies the installation process for customers. The placement groove on the core shaft matches the height of the inner ring, ensuring the precise fit between the inner ring and the core shaft. At the same time, the axial spacing between the inner ring and the core shaft allows for the application of a preload force. By fixing the washer on the core shaft, the magnitude of the preload force can be precisely controlled, thereby optimizing the load distribution of the bearing and reducing vibration during operation. This precise application of preload force not only improves the bearing's load-bearing capacity, but also extends the service life of the bearing. In addition, the connection hole design on the core shaft facilitates the connection of other output shafts, enhancing the versatility and applicability of the bearing assembly. Overall, this design improves the installation efficiency, stability and reliability of the product, providing customers with a cost-effective and easy-to-maintain bearing solution.

[0007] Furthermore, the gasket is arranged to surround the core shaft and has a protrusion protruding radially out of the core shaft toward the core shaft, and an elastic member is provided between the protrusion and the inner ring, with its two ends respectively abutting against the protrusion and the inner ring.

[0008] The above solution can achieve precise preload control of the bearing and the core shaft. The washer is set to surround the core shaft, and its protrusion protrudes radially and is connected to the inner ring through an elastic part. This design can not only form a stable constant pressure preload between the washer and the core shaft through the contact between the parts other than the protrusion, but also apply adjustable pressure to the inner ring through the elastic part, thereby achieving pressure-adjustable preload. This dual preload mechanism improves the adaptability and stability of the bearing assembly, enabling it to better cope with different working conditions and load changes. In addition, this design also helps to reduce the wear of the bearing during operation and extend its service life. Overall, this innovative preload method provides higher reliability and performance for the bearing assembly, while also simplifying the maintenance and adjustment process, providing customers with a more economical and efficient solution.

[0009] Furthermore, the rolling elements are in at least two rows, and the core shaft, outer ring and inner ring are respectively provided with raceway surfaces in contact with the rows of rolling elements, and each raceway surface is in contact with the rolling element through a plurality of points.

[0010] At least two rows of rolling elements are in close contact with the raceways on the core shaft, outer ring, and inner ring. Each raceway contacts the rolling element at multiple points. This design not only increases the bearing's load-bearing capacity but also improves its smooth and precise operation. The torque transfer chain formed between these contact points effectively transfers the preload from the elastic element to the rolling elements, ensuring bearing stability during operation. This torque transfer chain design enables the bearing to better absorb and distribute loads, reducing excess wear caused by uneven loading and thus extending its service life. It also helps improve the bearing's responsiveness and dynamic performance, enabling it to maintain excellent performance even at high speeds.

[0011] Furthermore, a straight line formed by connecting the contact points of the rolling body with different rolling surfaces at both ends is between the axial direction and the radial direction of the rolling body.

[0012] The diagonal line formed by the contact points between the rolling elements and the different rolling surfaces at both ends lies between the axial and radial directions of the rolling elements. This design facilitates smoother torque transmission, as the angle of the diagonal line optimizes force distribution and reduces energy loss during transmission. Furthermore, this diagonal layout does not affect the rotation of the rolling elements, as the distribution and angle of the contact points are precisely calculated to ensure continuous and smooth rotation. This design improves the operating efficiency of the bearing, reduces the additional wear caused by uneven torque transmission, and thus extends the bearing's service life. Furthermore, this diagonal layout helps improve the bearing's load-bearing capacity and impact resistance, ensuring stable performance even under complex operating conditions.

[0013] Furthermore, the washer and the core shaft are respectively provided with spliced fixing holes, and the washer and the core shaft are fixed by passing a fixing piece through the fixing hole. The fixing piece is respectively provided with a clamping portion protruding from the radial direction of the fixing hole on both sides of the fixing hole, and the clamping portion abuts against the washer.

[0014] The design of the fixing holes on the washers and the core shaft allows them to be tightly connected through the fixing parts, and the pressing part on the fixing parts abuts against the washers to ensure the firmness of the connection. By adjusting the fixing parts, the preload torque transmitted from the pressing part to the protrusion, to the elastic part, inner ring, rolling element, outer ring, and finally to the core shaft can be precisely controlled. This design not only improves the stability of the bearing assembly, but also ensures that the torque is evenly distributed among the various components, thereby optimizing the operating efficiency of the bearing. In addition, this design also allows users to easily adjust the preload torque according to different application requirements to achieve the optimal operating state. The close fit between the pressing part of the fixing parts and the washer provides additional rigidity to the bearing assembly, reduces vibration and noise during high load or high-speed operation, and further improves the service life and reliability of the bearing.

[0015] Furthermore, the bearing also includes seals located on both sides of the bearing, the seal on the side close to the gasket is a single-layer seal, and the seal on the side opposite to the gasket is a double-layer seal.

[0016] The seals on both sides of the bearing are located on the side closest to the gasket and the side opposite to the gasket, respectively. This design allows the protrusion to constitute the outer protection of one side of the single-layer seal, effectively preventing the intrusion of external contaminants and moisture, while maintaining the cleanliness of the bearing interior, sealing the grease, and reducing the cost of the seal. The open and unobstructed side is effectively sealed by a double-layer seal. This double-layer design further enhances the sealing effect, ensuring that the bearing can still maintain good performance under high-speed operation or in harsh environments. The double-layer seal design not only improves the sealing performance, but also provides additional protection to prevent grease leakage and extend the service life of the bearing. In addition, this design also helps to reduce maintenance costs, because the seal can effectively prevent premature aging and contamination of the grease, thereby reducing the frequency of grease changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an axonometric diagram of an embodiment of the present utility model;

[0018] Figure 2 A cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of preload torque transmission according to an embodiment of the present invention (arrow indicates the direction of preload force transmission). DETAILED DESCRIPTION

[0020] The utility model embodiment of a component bearing such as Figure 1-3 As shown, the structure includes a spindle 1, a bearing 2, and a rotor cup 3, assembled from the inside out. Bearing 2 comprises an outer ring 21, an inner ring 23, and two rows of rolling elements 22 located between them. A washer 4 and a fixing member 5 for adjusting the preload are connected to one end of spindle 1, while a connection hole 13 for connecting to the outside is provided at the other end.

[0021] The core shaft 1 is provided with a placement groove 11 for placing the inner ring 23 on the side close to the washer 4, and the groove depth of the placement groove 11 is equivalent to the height of the inner ring 23. After the inner ring 23 is placed in the placement groove 11, a certain distance is formed between it and the core shaft 1. This distance not only allows the inner ring 23 to maintain a safe distance from the core shaft 1 during movement to prevent the inner ring 23 from contacting the core shaft 1 and generating friction, but also provides an effective gap for the washer 4 and the fixing part 5 when adjusting the preload force.

[0022] Arc-shaped raceway surfaces 6 are provided on the outer ring 21, the inner ring 23 and the core shaft 1, forming abutment with the two rows of rolling elements 22. The contact points between each raceway surface 6 and the rolling element are between the axial and radial directions of the rolling element 22, so that the straight lines formed by the contact points at both ends of the rolling element 22 are oblique lines between the axial and radial directions of the rolling element 22.

[0023] The washer 4 at one end of the core shaft 1 includes a second fixing hole 41 that can be spliced with the first fixing hole 12 set on the core shaft 1, a wrapping portion 43 for wrapping the core shaft 1, and a protrusion 42 that protrudes radially from the core shaft 1. An elastic member 44 is provided between the protrusion 42 and the inner ring 23. The wrapping portion 43 that wraps the core shaft 1 forms a constant pressure pre-tightening of the washer 4 on the core shaft 1 between the washer 4 and the core shaft 1. In addition, a fixing member 5 is inserted into the fixing hole between the washer 4 and the core shaft 1 and the fixing member 5 is movable within the fixing hole. At the same time, the fixing member 5 is provided with a clamping portion 51 that protrudes radially from the diameter of the fixing hole at both ends. When the fixing member 5 moves within the fixing hole, the clamping portion 51 can realize a pre-tightening torque transmission chain of the clamping portion 51-protrusion 42-elastic member 44-inner ring 23-rolling element 22-outer ring 21-core shaft 1 through the clamping portion 51.

[0024] A single-layer seal 24 and a double-layer seal 25 are respectively provided at both ends of the bearing 2. The single-layer seal 24 is positioned near the side of the gasket 4 and is protected externally by a protrusion 42. Furthermore, the rotor cup 3 is provided with a hook 31 corresponding to the protrusion 42 to form a labyrinth, further enhancing the external protection of the single-layer seal 24. The double-layer seal 25 is provided on the side opposite the gasket 4 to enhance the sealing effect inside the bearing 2.

[0025] The above embodiment is only one preferred embodiment of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A bearing assembly comprising a spindle, a bearing and a rotor cup, wherein the bearing comprises an outer ring, an inner ring and rolling elements, and wherein: The core shaft, bearing and rotor cup are assembled in sequence. The core shaft is provided with a placement groove for the inner ring. The depth of the placement groove is equivalent to the height of the inner ring and there is an axial distance between the inner ring placed in the placement groove and the core shaft. A washer is fixed on the core shaft and the washer is used to apply a pre-tightening force to the bearing and the core shaft. A connecting hole is provided on the other end of the core shaft opposite to the washer.

2. The bearing assembly according to claim 1, wherein: The washer is arranged to surround the core shaft and has a protrusion protruding from the core shaft in the radial direction. An elastic member is arranged between the protrusion and the inner ring, with its two ends respectively abutting against the protrusion and the inner ring.

3. The component bearing according to claim 2, characterized in that: The rolling elements are in at least two rows, and the core shaft, outer ring and inner ring are respectively provided with raceway surfaces in contact with the rows of rolling elements, and each raceway surface is in contact with the rolling element through a plurality of points.

4. The bearing assembly according to claim 3, characterized in that: The straight line formed by connecting the contact points of the rolling body with the different rolling surfaces at both ends is between the axial direction and the radial direction of the rolling body.

5. The bearing assembly according to claim 4, characterized in that: The washer and the core shaft are respectively provided with spliced fixing holes, and the washer and the core shaft are fixed by passing a fixing piece through the fixing hole. The fixing piece is respectively provided with a clamping portion protruding from the radial direction of the fixing hole on both sides of the fixing hole, and the clamping portion abuts against the washer.

6. The bearing assembly according to claim 1, wherein: The bearing further comprises sealing members respectively located on both sides of the bearing, the sealing member on the side close to the washer is a single-layer sealing member, and the sealing member on the side opposite to the washer is a double-layer sealing member.

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