CN209324888U - A kind of sliding universal joint assembly with three ball pins - Google Patents

Abstract

The utility model discloses a kind of sliding universal joint assemblies of three ball pins comprising sliding sleeve and the trident bearing assembly being located in sliding sleeve；The raceway that the section slid for trident bearing assembly is arc is provided in the sliding sleeve；Trident bearing assembly includes the intermediate bearing bracket stand for being equipped with involute spline, bearing outer ring, needle roller, baffle ring and the snap ring being equipped on three pin shafts and each pin shaft being uniformly arranged on bearing bracket stand；The raceway of the bearing outer ring spherical outside surface and sliding sleeve matches, and groove is provided on bearing outer ring spherical outside surface or is laser-etched with rough surface；The bearing outer ring inner surface matches with needle roller, and bearing outer ring inner surface and needle roller are respectively corresponding spindle.The utility model lubrication is sufficiently, frictional force is small, overall transmission efficiency is high, operational shock is small, work pivot angle is big.

Description

A kind of sliding universal joint assembly with three ball pins

technical field

The utility model belongs to the field of auto parts and relates to a three-ball pin sliding type universal joint assembly.

Background technique

A high-performance constant velocity universal joint shaft assembly for a passenger car usually consists of a fixed universal joint, a sliding universal joint and an intermediate shaft connected between the universal joints. Sliding universal joints include tripod type and ball cage type. At present, there are many tripod sliding universal joints in the market, which include sliding sleeve and three-prong bearing assembly, and the three-prong bearing assembly is inside the sliding sleeve. It can slide. The three-prong bearing assembly includes a bearing frame. There are three pin shafts evenly arranged on the bearing frame. The pin shafts are equipped with bearing outer rings, needle rollers, retaining rings and elastic snap rings. The outer ends of the needle rollers are supported by retaining rings. And elastic snap ring limit, this kind of structure has low cost, simple structure and light weight, so it is more commonly used. However, due to the large contact area between the outer surface of the bearing outer ring and the raceway of the sliding sleeve, the inner surface of the outer ring and the needle roller, and the needle roller and the pin shaft of the bearing frame, the lubrication is insufficient, resulting in greater frictional resistance. There is no degree of freedom to swing around the Y-axis between the needle rollers, which affects the transmission efficiency, NVH performance and the swing angle range of the universal joint of the vehicle.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems existing in the prior art, and to provide a three-ball sliding universal joint assembly with sufficient lubrication, small friction, high overall transmission efficiency, small running vibration, and large working swing angle. to make.

In order to achieve the above object, the technical solution of the utility model is: a three-ball pin sliding universal joint assembly, which includes a sliding sleeve and a trident bearing assembly arranged in the sliding sleeve; A raceway with an arc-shaped section is provided for the sliding of the trident bearing assembly; the trident bearing assembly includes a bearing frame with an involute spline in the middle, three pin shafts uniformly arranged on the bearing frame and each pin shaft The outer spherical surface of the bearing outer ring is matched with the raceway of the sliding sleeve, and the outer spherical surface of the bearing outer ring is grooved or laser-etched Rough surface; the inner surface of the bearing outer ring matches the needle roller, and the inner surface of the bearing outer ring and the needle roller are respectively in the corresponding spindle shape.

The inner surface of the bearing outer ring and the roller needles of the utility model are respectively in the corresponding spindle shape, which is easier to form an oil film and improves the efficiency; meanwhile, the swing angle range of the universal joint is increased. There are grooves or laser-etched rough surfaces on the outer spherical surface of the bearing outer ring, which can fully provide grease lubrication for the working area. The utility model has the advantages of sufficient lubrication, small frictional force, high overall transmission efficiency, small running vibration and large working swing angle.

Description of drawings

Fig. 1 is the internal structure front view of the utility model;

Fig. 2 is a schematic diagram of direction A of Fig. 1;

Fig. 3 is a schematic diagram of the internal structure of the trident bearing assembly in the utility model;

Fig. 4 is a schematic diagram of the internal structure of the bearing outer ring in the utility model;

Fig. 5 is an enlarged view of part B of Fig. 4;

Fig. 6 is a structural schematic diagram of the needle roller in the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 and FIG. 6 , this embodiment includes a sliding sleeve 1 and a trident bearing assembly disposed in the inner cavity of the sliding sleeve 1 . The sliding sleeve 1 is provided with a raceway with an arc-shaped section for the sliding of the three-prong bearing assembly. The three-prong bearing assembly includes a bearing frame 3 with an involute spline in the middle, and a bearing frame 3 uniformly arranged on the bearing frame 3. Three pin shafts, bearing outer ring 2, needle roller 6, retaining ring 4 and elastic snap ring 5 are housed on each pin shaft. The outer spherical surface of the bearing outer ring 2 matches the raceway of the sliding sleeve 1, and a groove 7 is processed on the outer spherical surface of the bearing outer ring 2 (or a rough surface etched by laser). Grease can be stored in the groove 7 or laser engraved During operation, grease is provided in the working areas on both sides to form oil film lubrication and reduce frictional resistance, thereby improving the transmission efficiency of the entire shaft. The inner surface 8 of the bearing outer ring 2 and the needle roller 6 are processed into a corresponding spindle shape, which makes it easier to form an oil film. At the same time, because it is processed into a spindle shape, the outer ring can properly swing around the Y-axis of the pin shaft, which increases the size of the universal joint. swing angle range. The needle roller 6 rolls on the pin shaft of the bearing frame 3, and the pin shaft is processed with grooves or laser engraved. Grease can be stored in the groove or laser engraved. During operation, grease is provided in the working areas on both sides to form an oil film lubrication , to reduce frictional resistance, while the needle roller 6 is processed into a spindle shape, which makes it easier to form an oil film.

The above-described embodiments are only preferred and exemplary, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model shall be included in the utility model. within the scope of protection.

Claims (1)

1. a kind of sliding universal joint assembly of three ball pins, it is characterised in that: it includes sliding sleeve and the trident bearing that is located in sliding sleeve Assembly；The raceway that the section slid for trident bearing assembly is arc is provided in the sliding sleeve；Trident bearing assembly includes Centre is equipped with the bearing bracket stand of involute spline, outside the bearing being equipped on three pin shafts and each pin shaft being uniformly arranged on bearing bracket stand Circle, needle roller, baffle ring and snap ring；The raceway of the bearing outer ring spherical outside surface and sliding sleeve matches, in bearing outer ring ectosphere It is provided with groove on face or is laser-etched with rough surface；The bearing outer ring inner surface matches with needle roller, bearing outer ring inner surface It is respectively corresponding spindle with needle roller.