Low-noise and high-durability constant velocity universal joint for new energy

Abstract

The utility model discloses a low-noise and high-durability constant velocity universal joint for new energy. The constant velocity universal joint tripod mainly solves the problem that friction force between an existing constant velocity universal joint tripod and an inner ball ring is large. The bearing frame is characterized in that a shaft neck (21) is arranged on the frame body, an inner ball ring (22) is arranged on the shaft neck in a sleeved mode, and a plurality of open grooves (211) used for storing grease are formed in the circumferential outer wall of the shaft neck. According to the low-noise and high-durability constant velocity universal joint for the new energy, the capacity of lubricating grease in the contact area of the three-pin frame and the inner ball ring is increased, the friction coefficient of the three-pin frame and the inner ball ring is reduced, the friction force is reduced, the friction force between the inner ball ring and a three-pin shell sliding groove is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, concretely relates to a new energy low noise high endurance constant velocity universal joint. BACKGROUND

[0002] In the three-ball pin constant velocity universal joint, the axial derived force is the superposition of friction generated by the periodic reciprocating motion of the three inner ball rings in the respective raceways. This friction is mainly affected by the relative displacement between the three-pin frame head and the inner ball ring. In the case of poor lubrication, the friction increases, leading to an increase in temperature, thereby exacerbating the friction between the inner ball ring and the raceway. This condition not only increases the axial derived force, but also directly affects the NVH (Noise, Vibration, and Harshness) performance of the vehicle chassis, manifested as an increase in vibration and noise.

[0003] When the vehicle is turning, due to the large torque working condition, the friction between the three-pin frame and the inner ball ring further increases, and the axial derived force increases accordingly. This phenomenon can lead to a decrease in the ride comfort of the vehicle, and also affects the durability of the vehicle. SUMMARY

[0004] To overcome the shortcomings of the background art, the utility model provides a new energy low noise high endurance constant velocity universal joint, mainly solving the problem of large friction between the three-pin frame and the inner ball ring of the current constant velocity universal joint.

[0005] The technical scheme of the utility model is,

[0006] A new energy low noise high endurance constant velocity universal joint, comprising a housing, the housing is provided with a three-pin frame assembly inside, the three-pin frame assembly comprises a frame body, the frame body is provided with a journal, the journal is provided with an inner ball ring, and the circumferential outer wall of the journal is provided with a plurality of open grooves for storing grease.

[0007] The open grooves are elliptical grooves.

[0008] The open grooves are uniformly distributed on the circumferential outer wall of the journal.

[0009] The adjacent open grooves are arranged in parallel.

[0010] The open grooves are arranged in the axial direction of the journal.

[0011] Three journals are provided with the open grooves.

[0012] The total area of all the open grooves accounts for 30% to 50% of the circumferential area of the journal.

[0013] The inner ball ring is provided with an outer ball ring, and a rolling element is arranged between the outer ball ring and the inner ball ring.

[0014] The rolling member is a rolling needle.

[0015] The utility model discloses a new energy low noise, high endurance constant velocity universal joint, increase the capacity of the three pin frame and the inner ball ring contact area's capacity lubricating grease capacity, reduce the friction coefficient of three pin frame and inner ball ring, reduce the friction, thereby reduce the friction between inner ball ring and three pin shell sliding groove, increase the service life. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the sectional view schematic diagram of the first embodiment of the utility model.

[0017] Figure 2 It is the three pin frame's three -dimensional schematic diagram of the first embodiment of the utility model. DETAILED DESCRIPTION

[0018] The utility model discloses a new energy low noise, high endurance constant velocity universal joint, including the casing 1, be equipped with three pin frame assembly in the casing, three pin frame assembly includes the frame body 2, be equipped with the journal 21 on the frame body, the inner ball ring 22 is set up on the journal, the circumferential outer wall of journal is equipped with a plurality of opening groove 211 for storing oiliness. The opening groove is set up outside the journal to store oiliness, increase the capacity of the three pin frame and the inner ball ring contact area's capacity lubricating grease capacity, reduce the friction coefficient of three pin frame and inner ball ring, reduce the friction, thereby reduce the friction between inner ball ring and three pin shell sliding groove, increase the service life.

[0019] In this embodiment, as shown in the figure, the opening groove is an oval slot.

[0020] In this embodiment, as shown in the figure, the opening groove is uniformly distributed on the circumferential outer wall of the journal. More oil can be stored.

[0021] In this embodiment, as shown in the figure, the adjacent opening grooves are arranged in parallel.

[0022] In this embodiment, as shown in the figure, the opening grooves are arranged along the axial direction of the journal.

[0023] In this embodiment, as shown in the figure, the opening grooves are arranged along the axial direction of the journal.

[0024] In this embodiment, as shown in the figure, the area sum of all the opening grooves accounts for 30% to 50% of the circumferential area of the journal.

[0025] In this embodiment, as shown in the figure, the inner ball ring is provided with an outer ball ring 23, and a rolling member 24 is arranged between the outer ball ring and the inner ball ring.

[0026] In the present embodiment, the rolling element 24 is a needle roller, as shown.

[0027] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] The embodiments described with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation on the present application. The embodiments should not be considered as a limitation on the present application, but any improvement made on the basis of the spirit of the present application should be within the scope of protection of the present application.

Claims

1. A low noise, high durability constant velocity joint for new energy, comprising a shell (1), a three-pin cage assembly is arranged in the shell, the three-pin cage assembly comprises a cage body (2), characterized in that: The axle neck (21) is provided on the frame body, an inner spherical ring (22) is sleeved on the axle neck, and a plurality of open grooves (211) for storing grease are arranged on the circumferential outer wall of the axle neck.

2. A low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, wherein: The open grooves are elliptical grooves.

3. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, characterized in that: The open grooves are uniformly distributed on the circumferential outer wall of the axle neck.

4. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, characterized in that: The adjacent open grooves are arranged in parallel.

5. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, wherein: The open grooves are arranged in the axial direction of the axle neck.

6. A low noise, high durability constant velocity joint for new energy vehicles as claimed in any one of claims 1 to 5, characterized in that: The open grooves are arranged on three axle necks.

7. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, wherein: The total area of all the open grooves accounts for 30%-50% of the circumferential area of the axle neck.

8. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 1, characterized in that: An outer spherical ring (23) is arranged outside the inner spherical ring, and a rolling element (24) is arranged between the outer spherical ring and the inner spherical ring.

9. The low noise, high durability constant velocity joint for new energy vehicles as claimed in claim 8, characterized in that: The rolling element (24) is a rolling pin.

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