Low-sliding-resistance sliding end universal joint

Abstract

The utility model discloses a low-sliding-resistance sliding end universal joint. The sliding end universal joint mainly solves the problem that friction between a roller pin and a retainer is large due to the fact that the contact area between the roller pin and a roller path of an existing sliding end universal joint is large. The inner ring is arranged on the circumferential wall of the shaft neck in a sleeving manner; the outer ring is arranged on the outer side of the inner ring, and an integrally formed convex ring is arranged on the inner wall of the outer ring; the retainers are arranged between the inner ring and the outer ring, a plurality of rolling balls used for being matched with the inner wall of a shell are installed on the retainers, and the adjacent retainers are spaced by convex rings; and the sealing gaskets are arranged between the inner ring and the outer ring, are in sealing fit with the inner ring and the outer ring, and are arranged on the upper side and the lower side of the retainer. The utility model provides a low-slip-resistance slip end universal joint, which is characterized in that a roller pin structure is innovated into a double-row ball structure, and the ball structure mainly comprises an inner ring, an outer ring, a steel ball and a retainer. The steel balls are core parts and roll between the inner ring and the outer ring, so that friction and abrasion are reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a low-slip resistance sliding end universal joint. Background Art

[0002] As the new energy vehicle market continues to expand, consumers' demand for vehicle performance is also increasing. The demand for drive shafts keeps pace with market changes and provides products that meet the needs of different models and applications. In addition, as the international market demand for new energy vehicles increases, the export market for drive shafts will also usher in new growth opportunities, thereby driving up the demand for drive shafts.

[0003] The sliding end universal joint of the conventional needle roller structure has insufficient performance in axial derived force and high-frequency sliding resistance because the needle rollers are arranged in the same space and the contact area between the needle roller and the raceway is large, which increases the friction between the needle roller and the cage. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides a low sliding resistance sliding end universal joint, which mainly solves the problem that the contact area between the needle roller and the raceway of the current sliding end universal joint is large, resulting in large friction between the needle roller and the retaining frame.

[0005] The technical solution of the utility model is:

[0006] A low-slip resistance sliding end universal joint comprises a housing, wherein a three-pin frame assembly with active fit is arranged in the housing, wherein the three-pin frame assembly comprises a frame body, wherein the frame body is provided with a journal, and further comprises

[0007] An inner ring, sleeved on the circumferential wall of the journal;

[0008] An outer ring is arranged outside the inner ring, and an inner wall of the outer ring is provided with an integrally formed convex ring;

[0009] A retainer is provided between the inner ring and the outer ring, and is provided with a plurality of rolling balls for matching with the inner wall of the housing, and adjacent retainers are separated by convex rings;

[0010] A sealing gasket is arranged between the inner ring and the outer ring and is sealed with the inner ring and the outer ring. The sealing gasket is arranged on the upper and lower sides of the retaining frame.

[0011] The rolling ball is a steel ball.

[0012] The retaining brackets are provided with two.

[0013] The retaining frames are coaxially arranged and arranged opposite to each other up and down.

[0014] The sealing gasket comprises a frame, and the frame is covered with a sealing lip.

[0015] The outer ring is made of alloy steel.

[0016] The inner ring is made of alloy steel.

[0017] The beneficial effects of the present utility model are as follows: The present utility model provides a slip-end universal joint with low slip resistance, which innovates from a needle roller structure to a double-row ball structure. The ball structure mainly consists of an inner ring, an outer ring, steel balls and a cage. The steel balls are the core components, which roll between the inner and outer rings to reduce friction and wear. Description of the Drawings

[0018] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0019] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0020] Figure 3 It is a structural schematic diagram of the outer ring of an embodiment of the present utility model.

[0021] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the present utility model.

[0022] Figure 5 It is a structural schematic diagram of the cage of an embodiment of the present utility model. Detailed Description of the Preferred Embodiments

[0023] The present utility model will be further described below with reference to the drawings: As shown in the figure, a slip-end universal joint with low slip resistance includes a housing 1. A three-pin frame assembly 2 is movably arranged inside the housing. The three-pin frame assembly includes a frame body 21, and a journal 22 is arranged on the frame body. It further includes an inner ring 3 sleeved on the circumferential wall of the journal; an outer ring 4 arranged outside the inner ring, and a convex ring 41 is integrally formed on the inner wall of the outer ring; a cage 5 arranged between the inner ring and the outer ring, and a plurality of balls 51 for cooperating with the inner wall of the housing are installed, and the adjacent cages are separated by the convex ring; a gasket 6 arranged between the inner ring and the outer ring and hermetically cooperating with the inner ring and the outer ring, and the gasket is arranged on the upper and lower sides of the cage. The product with a ball structure has a small contact area and a small frictional resistance, can easily meet the requirements of rotation, runs more smoothly, and can effectively control the special requirements of the electric vehicle for axial derivative force and high-frequency slip resistance. The reasonable control of these forces can improve the running stability, safety, traction performance and economy of the electric vehicle, and provide guarantee for the normal operation of the electric vehicle. The function of the cage is to evenly separate the steel balls, prevent the steel balls from colliding and rubbing against each other, and at the same time keep the positions of the steel balls stable. The power transmission of the product is supported by the outer ring, the inner ring and the cage at the same time, and the torque can be effectively transmitted; the independent closed ball ring can effectively isolate the intrusion of foreign objects.

[0024] In this embodiment, as shown in the figure, the rolling ball is a steel ball.

[0025] In this embodiment, as shown in the figure, there are two cages.

[0026] In this embodiment, as shown in the figure, the cages are coaxially arranged and are oppositely arranged up and down.

[0027] In this embodiment, as shown in the figure, the gasket includes a skeleton 61, and the skeleton is coated with a sealing lip 62. The gasket is arranged on the outer side of the cage. In other words, the two gaskets protect the cage therein to prevent foreign objects from entering and have a longer service life.

[0028] In this embodiment, as shown in the figure, the outer ring is made of alloy steel.

[0029] In this embodiment, as shown in the figure, the inner ring is made of alloy steel. The inner ring and the outer ring are usually made of high-hardness alloy steel and have good wear resistance and load-bearing capacity.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0032] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention. The embodiments should not be regarded as a limitation to the present invention, but any improvement based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. Low-slip-resistance slip-end universal joint, comprising a housing (1), a tripod assembly (2) movably fitted inside the housing, the tripod assembly including a body (21) with a journal (22) provided thereon, characterized in that: It further includes an inner ring (3), sleeved on the circumferential wall of the journal; an outer ring (4), arranged on the outside of the inner ring, and a convex ring (41) is integrally formed on the inner wall of the outer ring; a cage (5), arranged between the inner ring and the outer ring, and is provided with a plurality of balls (51) for cooperating with the inner wall of the housing, and the adjacent cages are separated by the convex ring; a gasket (6), arranged between the inner ring and the outer ring and sealingly cooperating with the inner ring and the outer ring, and the gasket is arranged on the upper and lower sides of the cage.

2. The low-slip resistance slip-end universal joint according to claim 1, wherein: The ball is a steel ball.

3. The low-slip resistance slip-end universal joint according to claim 2, characterized in that: There are two cages.

4. The low-slip-resistance slip-end universal joint according to claim 3, characterized in that: The cages are coaxially arranged and oppositely arranged up and down.

5. The low-slip-resistance slip-end universal joint according to claim 4, characterized in that: The gasket includes a skeleton (61), and a sealing lip (62) is wrapped around the skeleton.

6. The low-slip resistance slip-end universal joint according to claim 5, wherein: The outer ring is made of alloy steel.

7. The low-slip-resistance slip-end universal joint according to claim 6, characterized in that: The inner ring is made of alloy steel.

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